Journal of Molecular Nanotechnology and Nanomedicine

Future Advanced Study of Thin Layers of DNA/RNA Hybrid Molecule Nanostructure

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Published Date: 11-03-2020

Future Advanced Study of Thin Layers of DNA/RNA Hybrid Molecule Nanostructure

Alireza Heidari1,2

1Faculty of Chemistry, California South University, 14731 Comet St. Irvine, CA 92604, USA

2American International Standards Institute, Irvine, CA 3800, USA


*Corresponding author: Alireza Heidari, Faculty of Chemistry, California South University, 14731 Comet St. Irvine, CA 92604, USA; American International Standards Institute, Irvine, CA 3800, USA, Email:;; 

Citation: Alireza H (2020) Future Advanced Study of Thin Layers of DNA/RNA Hybrid Molecule Nanostructure. J Mol Nanot Nanom 2(1):110.


Graphical Abstract


Thin layers of DNA/RNA hybrid molecule with various volumes of DNA/RNA acetate hybrid molecule solution (40, 50 and 70 ml) were deposited using spray pyrolysis technique over a glassy substrate. Samples were investigated using FESEM images, XRD and UV–Vis spectra as well as I–V characteristic. It was found that all samples were grown up with polycrystalline nanostructures along the preferred direction of (002). In addition, it was found that grew up sample in the volume of 50 (ml) are of optimum photoconductivity condition in visible range regarding optimum structural (largest crystallite size and lowest crystallite defect density) and optical (smallest band gap and highest light absorption) conditions.

DNA/RNA hybrid molecule nanostructure [1].

Keywords: DNA/RNA Hybrid Molecule; Spray Pyrolysis Technique; Photoconductivity; Nanostructure; Visible Light




DNA/RNA hybrid molecule is one of the rare inherent semi–conductors of type P with a narrow band gap of about 1.2–2.1 (eV) which has a monoclinic structure with limited transparency in the region of visible light [1–11]. Thin layers of this material are frequently dark brown to black. This darkness is due to narrow band gap and direct transitions between bands [12–20]. This fact leads to high absorption of visible light and can be used in optical pieces such as solar cells. In addition, this material is considered due to abundance of raw material, non–toxicity, easy production and ability to change and optimizing its physical properties using various physical and chemical methods such as chemical vapor deposition [21–31], spray pyrolysis [32–43] and so on. This material is one of the important mineral Oxides for applying in pieces such as solar cells, electrochromic pieces and gaseous sensors due to its availability, high absorption rate and low cost [44–56]. In the current research, cost effective spray pyrolysis technique was used to investigate photoconductivity of DNA/RNA hybrid molecule thin layers with various volumes of spray solution.


Sample Preparation


To prepare thin layers of DNA/RNA acetate hybrid molecule powder was solved in deionized water and 0.15 (M)DNA/RNA acetate hybrid molecule solution was prepared. Then, this solution was sprayed over glassy substrate in various volumes (40, 50, 70 ml) – corresponding to samples of V1, V2, V3 – to prepare the considered layers. It is expected that in pyrolysis process, the following chemical reaction mechanism happens [57–63]:


During each step, cleaned substrates were heated up to 440º C in spray device and then, solution was sprayed under air pressure (1.1 bar). In this process, distance of sprays from substrates was 35 (cm). Structural analysis of samples was performed by X–Ray Diffraction device (XRD, Brucker AXS) with CuKα spectral line emission (1.5405 Å) and the surface morphology of samples were investigated by Scanning Electron Microscopy (FESEM Hitachi S.4160). Optical characteristics of layers were measured using passed and absorbed spectra by optical spectroscopy (Shimadzu UV–Vis 1800) in the range of 300–1100 (nm).


Surface Morphology


Figure 1 shows SEM images of samples in the scales of 5 microns and 500 (nm). Although the images for V1 and V3 samples show uniform surface along with some grains with 50 and 100 (nm), respectively, V2 sample is of porous surface along with woven fibers and mud–like particles that differentiate it from two other sample.

Figure 1: SEM image of thin layers of DNA/RNA hybrid molecule for samples prepared in various volumes.


Structural Properties


XRD spectrum of samples is shown in figure 2. Diffraction curves of samples indicate that they are of polycrystalline structure with monoclinic structure and principal planes of (002) and (111) located at angles of 35.56° and 38.74°. The results indicate that V2 sample with solution volume of 50 (ml) is of weaker peaks at directions of (202) and (020) at angles of 48.86° and 53.85°, respectively. The presence of these peaks along with relative intensity of the major peaks indicates that crystalline structure improves compared to other samples.

Figure 2: XRD spectrum of DNA/RNAhybrid moleculelayers with various volumes of solution.


For more accurate investigation of structural properties, crystallite size (D), dislocation density (δ) and crystalline strains (ε) are calculated [64–76]:

where, β is half width at full maximum, D is crystallite size, θ is Brug angle and λ is X–Ray wavelength. Results of these calculations are listed in table 1.

Table 1: Calculated structural properties for the preferred peak (002).


Optical Properties


Figure 3 shows optical passing spectrum of the under studied layers. It can be seen that in visible region of 400–700 (nm), V2 sample and V3 sample are of the lowest and highest passing, respectively. These variations may be largely due to relative electrical conductivity of layers (Section 4) which is effective is relative amount of metal–like and or insulator–like of layers.

Figure 3: Passing optical spectrum of DNA/RNAhybrid moleculethin layers grew up in various volumes.


According to the reported results, DNA/RNA hybrid molecule layers are acted as a semiconductor with direct transition between bands so that during these transitions, absorption coefficient is a function of incident photon energy [77–93]. Figure 4 shows the variations of absorption spectra of layers against wavelength.

Figure 4: Absorption spectrum of under studied samples in terms of wavelength.


Since DNA/RNA hybrid molecule is a semiconductor with direct transitions between bands, to determine optical band gap of samples, (ahν)2 is drawn against hν and data is extrapolated in linear region of high energy with horizontal axis as a = 0. Figure 5 shows this curve in order to determine direct optical band gap and the attached figure shows the results obtained from this analysis related to band gap amounts. The results indicate that the sample with largest crystallite size (V2) has the smallest band gap (1.74 eV) and the sample with smallest crystallite size (V3) has the largest band gap (2.01 eV) which can be a reason for happening a quantum limitation in these samples.

Electrical Properties


Figure 6 shows current–voltage–power curve of these samples. The results indicate that sample V2 has the highest electrical conductivity (metal–like property) while sample V3 has the lowest one (isolator–like property). This is in good agreement with optical transition behavior of layers.

Figure 6: Current–Voltage–Power curve for samples grew up in darkness.


Photoconductivity Properties


To investigate photoconductivity of samples, the under studied samples were placed under visible light emission (halogen lamp). Figure 7 shows power–voltage curve of samples under light. As can be observed, all three samples are reacted to the light and after emission, more electrical current passed through samples. This is an expected event due to producing electron – hole pairs in layers as a result of optical photon emission in hν > Eg. In order to compare optical sensitivity of these samples, the passed electrical current through samples in voltage of V3in darkness and under visible light emission is shown in figure 8. As can be seen, sample V2 is of highest relative change of electrical current (ILight/IDark = 11) and sample V3 is of lowest one (=3). These variations may be due to the effect of various factors such as optical absorption, band gap, crystallite size and crystalline obliquity in the investigated layer.

Figure 7: Power–Voltage curve for samples subjected to visible light.


Figure 8: Passed electrical current through investigated samples.


Practical Utilities and Useful Applications


Various advanced properties of thin layers of DNA/RNA hybrid molecule nanostructure have also been reported. For example, large surface area and high porosity are quite useful for surface chemical reactions, biochemical sensors, etc. These properties are also very attractive for practical applications. We reviewed the recent status of practical applications of thin layers of DNA/RNA hybrid molecule nanostructure. To remove the skepticism and prejudice of manufacturers, the practicability of thin layers of DNA/RNA hybrid molecule nanostructure was discussed. There are no significant problems in their production, reliability, and design ability, which are important considerations for practical applications. In addition, we introduced two examples of our recent practical applications: DNA/RNA nanorod arrays for SERS and low–reflectivity wire–grid polarizers. Both products are currently available on the market. Even prior to the recent advent of advanced top–down processes, shadowing growth by oblique angle deposition (OAD) has long been providing self–assembled nanostructures over much larger areas for much lower costs. In the past two decades, significant progress has been made in the development of well–controlled three–dimensional nanomorphologies such as zigzags and helixes. Much effort has been put into theoretical and numerical understanding of the growth mechanism to improve morphology. Many researchers in academia have been investigating useful properties of nanocolumnar thin films in their laboratories. However, most companies seem hesitant to introduce thin layers of DNA/RNA hybrid molecule nanostructure techniques into the factory, owing to the prejudice that the thin layers of DNA/RNA hybrid molecule nanostructure are neither durable nor reproducible. The progress in thin layers of DNA/RNA hybrid molecule nanostructure technology for practical applications is reviewed and discussed.




The thin layers of DNA/RNA hybrid molecule nanostructures were deposited using spray pyrolysis technique with various volumes of spray solution over a glassy substrate. FESEM images indicate that surface morphology of samples are dependent on the variations of solution volume and XRD spectrum of layers indicate that polycrystalline structures are grew up in preferred direction of (002). Data analysis indicates that at solution volume of 50 ml, crystallite size and crystallite defect densities are optimum and photoconductivity properties are improved. In visible light region, layers are of low optical transition and of optical band gap between 1.74–2.01 (eV) so that sample V2 has the lowest band gap among all samples. The obtained results indicate that band gap variations in these samples are controlled by crystallite size and under the effect of happening a quantum limitation. Photoconductivity results indicate that sample V2 is of highest optical sensitivity to visible light.




  1. Yu P, Wu J, Liu S, Xiong J, Jagadish C, Wang ZM. Design and Fabrication of Silicon Nanowires towards Efficient Solar Cells. Nano Today. 2016;11:704–737.
  2. Sandhu S, Fan S. Current-Voltage Enhancement of a Single Coaxial Nanowire Solar Cell. ACS Photonics. 2015;2:1698–1704.
  3. van Dam D, Van Hoof NJJ, Cui Y, van Veldhoven PJ, Bakkers EPAM, Gómez RJ, et al. High-Efficiency Nanowire Solar Cells with Omnidirectionally Enhanced Absorption Due to Self-Aligned Indium-Tin-Oxide Mie Scatterers. ACS Nano. 2016;10:11414–11419.
  4. Luo S, Yu WB, He Y, Ouyang G. Size-Dependent Optical Absorption Modulation of Si/Ge and Ge/Si Core/shell Nanowires with Different Cross-Sectional Geometries. Nanotechnology. 2015;26:085702.
  5. Yu P, Yao Y, Wu J, Niu X, Rogach AL, Wang Z. Effects of Plasmonic Metal Core-Dielectric Shell Nanoparticles on the Broadband Light Absorption Enhancement in Thin Film Solar Cells. Sci. Rep. 2017;7:7696.
  6. Gouda AM, Allam NK, Swillam MA. Efficient Fabrication Methodology of Wide Angle Black Silicon for Energy Harvesting Applications. RSC Adv. 2017;7:26974–26982.
  7. Branz HM, Yost VE, Ward S, Jones KM, To B, Stradins P. Nanostructured Black Silicon and the Optical Reflectance of Graded-Density Surfaces. Appl Phys Lett. 2009;94:231121.
  8. Fazio B, Artoni P, AntoníaIatí M, D’Andrea C, Lo Faro MJ, Del Sorbo S, et al. Strongly Enhanced Light Trapping in a Two-Dimensional Silicon Nanowire Random Fractal Array. Light: Sci Appl. 2016;5:e16062.
  9. Ko MD, Rim T, Kim K, Meyyappan M, Baek CK. High Efficiency Silicon Solar Cell Based on Asymmetric Nanowire. Sci Rep. 2015;5:11646.
  10. Oh J, Yuan HC, Branz HM. An 18.2%-Efficient Black-Silicon Solar Cell Achieved through Control of Carrier Recombination in Nanostructures. Nat Nanotechnol. 2012;7:743–748.
  11. Lin H, Xiu F, Fang M, Yip S, Cheung HY, Wang F, et al. Rational Design of Inverted Nanopencil Arrays for Cost-Effective, Broadband, and Omnidirectional Light Harvesting. ACS Nano. 2014;8(4):3752–3760.
  12. Garnett E, Yang P. Light Trapping in Silicon Nanowire Solar Cells. Nano Lett. 2010;10(3):1082–1087.
  13. Misra S, Yu L, Foldyna M, Roca I Cabarrocas P. High Efficiency and Stable Hydrogenated Amorphous Silicon Radial Junction Solar Cells Built on VLS-Grown Silicon Nanowires. Sol Energy Mater Sol Cells. 2013;118:90–95.
  14. Kelzenberg MD, Boettcher SW, Petykiewicz JA, Turner-Evans DB, Putnam MC, Warren EL, et al. Enhanced Absorption and Carrier Collection in Si Wire Arrays for Photovoltaic Applications. Nat Mater. 2010;9:239–244.
  15. Tian B, Zheng X, Kempa TJ, Fang Y, Yu N, Yu G, et al. Coaxial Silicon Nanowires as Solar Cells and Nanoelectronic Power Sources. Nature. 2007;449:885–889.
  16. Razek SA, Swillam MA, Allam NK. Vertically Aligned Crystalline Silicon Nanowires with Controlled Diameters for Energy Conversion Applications: Experimental and Theoretical Insights. J Appl Phys. 2014;115:194305.
  17. Dhindsa N, Walia J, Saini SS. A Platform for Colorful Solar Cells with Enhanced Absorption. Nanotechnology. 2016;27:495203.
  18. Dhindsa N, Walia J, Pathirane M, Khodadad I, Wong WS, Saini SS. Adjustable Optical Response of Amorphous Silicon Nanowires Integrated with Thin Films. Nanotechnology. 2016;27(14):145703. doi: 10.1088/0957-4484/27/14/145703.
  19. Zhu J, Yu Z, Burkhard GF, Hsu CM, Connor ST, Xu Y , et al. Optical Absorption Enhancement in Amorphous Silicon Nanowire and Nanocone Arrays. Nano Lett. 2009;9:279–282.
  20. Klinger D, Lusakowska E, Zymierska D. Nano-Structure Formed by Nanosecond Laser Annealing on Amorphous Si Surface. Mater Sci Semicond Process. 2006;9:323–326. Doi: 10.1016/j.mssp.2006.01.027.
  21. Kumar P, Krishna MG, Bhattacharya A. Excimer Laser Induced Nanostructuring of Silicon Surfaces. J Nanosci Nanotechnol. 2009;9:3224–3232.
  22. Kumar P. Surface Modulation of Silicon Surface by Excimer Laser at Laser Fluence below Ablation Threshold. Appl Phys A: Mater Sci Process. 2010;99:245–250. Doi:10.1007/s00339-009-5510-x.
  23. Adikaari AADT, Silva SRP. Thickness Dependence of Properties of Excimer Laser Crystallized Nano-Polycrystalline Silicon J Appl Phys. 2005;97:114305. Doi: 10.1063/1.1898444.
  24. Adikaari AADT, Dissanayake DMNM, Hatton RA, Silva SRP. Efficient Laser Textured Nanocrystalline Silicon-Polymer Bilayer Solar Cells. Appl Phys Lett. 2007;90:203514. Doi: 10.1063/1.2739365.
  25. Adikaari AADT, Silva SRP. Excimer Laser Crystallization and Nanostructuring of Amorphous Silicon for Photovoltaic Applications. Nanotechnology. 2008;3:117–126. Doi:10.1142/S1793292008000915.
  26. Tang YF, Silva SRP, Boskovic BO, Shannon JM, Rose MJ. Electron Field Emission from Excimer Laser Crystallized Amorphous Silicon. Appl Phys Lett. 2002;80:4154–4156. Doi: 10.1063/1.1482141.
  27. Jin S, Hong S, Mativenga M, Kim B, Shin HH, Park JK. Low Temperature Polycrystalline Silicon with Single Orientation on Glass by Blue Laser Annealing. Thin Solid Films. 2016;616:838–841. Doi: 10.1016/j.tsf.2016.10.026.
  28. Crouch CH, Carey JE, Warrender JM, Aziz MJ, Mazur E, Génin FY. Comparison of Structure and Properties of Femtosecond and Nanosecond Laser-Structured Silicon. Appl Phys Lett. 2004;84:1850–1852. Doi: 10.1063/1.1667004.
  29. Wu C, Crouch CH, Zhao L, Carey JE, Younkin R, Levinson JA, et al. Near-Unity below-Band-Gap Absorption by Microstructured Silicon. Appl Phys Lett. 2001;78:1850–1852. Doi: 10.1063/1.1358846.
  30. Pedraza AJ, Fowlkes JD, Lowndes DH. Silicon Microcolumn Arrays Grown by Nanosecond Pulsed-Excimer Laser Irradiation. Appl Phys Lett. 1999;74:2322. Doi: 10.1063/1.123838.
  31. Pedraza AJ, Fowlkes JD, Jesse S, Mao C, Lowndes DH. Surface Micro-Structuring of Silicon by Excimer-Laser Irradiation in Reactive Atmospheres. Appl Surf Sci. 2000;168:251–257. Doi: 10.1016/S0169-4332(00)00611-5.
  32. Porte HP, Turchinovich D, Persheyev S, Fan Y, Rose MJ, Jepsen PU. On Ultrafast Photoconductivity Dynamics and Crystallinity of Black Silicon. IEEE Trans. Terahertz Sci Technol. 2013;3:331–341. Doi:10.1109/TTHZ.2013.2255917.
  33. Georgiev DG, Baird RJ, Avrutsky I, Auner G, Newaz G. Controllable Excimer-Laser Fabrication of Conical Nano-Tips on Silicon Thin Films. Appl Phys Lett. 2004;84:4881–4883. Doi: 10.1063/1.1762978.
  34. Eizenkop J, Avrutsky I, Georgiev DG, Chaudchary V. Single-Pulse Excimer Laser Nanostructuring of Silicon: A Heat Transfer Problem and Surface Morphology. J Appl Phys. 2008;103:094311. Doi: 10.1063/1.2910196.
  35. Eizenkop J, Avrutsky I, Auner G, Georgiev DG, Chaudhary V. Single Pulse Excimer Laser Nanostructuring of Thin Silicon Films: Nanosharp Cones Formation and a Heat Transfer Problem. J Appl Phys. 2007;101:094301. Doi: 10.1063/1.2720185.
  36. Hong L, Wang XC, Zheng HY, He L, Wang H, Yu HY. Rusli Femtosecond Laser Induced Nanocone Structure and Simultaneous Crystallization of 1.6 μM Amorphous Silicon Thin Film for Photovoltaic Application. J Phys D: Appl Phys. 2013;46:195109. Doi:10.1088/0022-3727/46/19/195109.
  37. Hong L, Wang X, Rusli Wang H, Zheng H, Yu H. Crystallization and Surface Texturing of Amorphous-Si Induced by UV Laser for Photovoltaic Application. J Appl Phys. 2012;111:043106. Doi: 10.1063/1.3686612.
  38. Magdi S, Swillam MA. Broadband Absorption Enhancement in Amorphous Si Solar Cells Using Metal Gratings and Surface Texturing. Proc. SPIE. 2017;10099:1009912. Doi:10.1117/12.2253326.
  39. Diedenhofen SL, Janssen OTA, Grzela G, Bakkers EPAM, Gómez Rivas J. Strong Geometrical Dependence of the Absorption of Light in Arrays of Semiconductor Nanowires. ACS Nano. 2011;5:2316–2323. Doi:10.1021/nn103596n.
  40. Jäger ST, Strehle S. Design Parameters for Enhanced Photon Absorption in Vertically Aligned Silicon Nanowire Arrays. Nanoscale Res Lett. 2014;9:511. Doi:10.1186/1556-276X-9-511.
  41. Gouda AM, Elsayed MY, Khalifa AE, Ismail Y, Swillam MA. Lithography-Free Wide-Angle Antireflective Self-Cleaning Silicon Nanocones. Opt Lett. 2016;41:3575. Doi: 10.1364/OL.41.003575.
  42. Magdi S, Swillam MA. Optical Analysis of Si-Tapered Nanowires/low Band Gap Polymer Hybrid Solar Cells. Proc. SPIE. 2017;10099;100991D. Doi: 10.1117/12.2253299.
  43. Jiang Y, Gong X, Qin R, Liu H, Xia C, Ma H. Efficiency Enhancement Mechanism for Poly (3, 4-ethylenedioxythiophene):Poly (styrenesulfonate)/Silicon Nanowires Hybrid Solar Cells Using Alkali Treatment. Nanoscale Res Lett. 2016;11;267. Doi: 10.1186/s11671-016-1450-5.
  44. Gong X, Jiang Y, Li M, Liu H, Ma H. Hybrid Tapered Silicon nanowire/PEDOT:PSS Solar Cells. RSC Adv. 2015;5(14):10310–10317. Doi:10.1039/C4RA16603E.
  45. Mohammad NS. Understanding Quantum Confinement in Nanowires: Basics, Applications and Possible Laws. J Phys: Condens Matter. 2014;26:423202. Doi: 10.1088/0953-8984/26/42/423202.
  46. Zhang A, Luo S, Ouyang G, Yang GW. Strain-Induced Optical Absorption Properties of Semiconductor Nanocrystals. J Chem Phys. 2013;138:244702. Doi: 10.1063/1.4811222.
  47. He Y, Yu W, Ouyang G. Shape-Dependent Conversion Efficiency of Si Nanowire Solar Cells with Polygonal Cross-Sections. J Appl Phys. 2016;119:225101. Doi: 10.1063/1.4953377.
  48. Tchakarov S, Das D, Saadane O, Kharchenko AV, Suendo V, Kail F, et al. Helium versus Hydrogen Dilution in the Optimization of Polymorphous Silicon Solar Cells. J Non-Cryst Solids. 2004;338–340:668–672. Doi: 10.1016/j.jnoncrysol.2004.03.068.
  49. Roszairi H, Rahman SA. High Deposition Rate Thin Film Hydrogenated Amorphous Silicon Prepared by D.c. Plasma Enhanced Chemical Vapour Deposition of Helium Diluted Silane. IEEE International Conference on Semiconductor Electronics, 2002. Proceedings. ICSE 2002, Panang, Malaysia, Dec. 19–21, 2002; IEEE: New York, NY, USA, 2002; pp 300–303, DOI: 10.1109/SMELEC.2002.1217830.
  50. N’Guyen TTT, Duong HTT, Basuki J, Montembault V, Pascual S, Guibert C, et al. Functional Iron Oxide Magnetic Nanoparticles with Hyperthermia-Induced Drug Release Ability by Using a Combination of Orthogonal Click Reactions. Angew Chem Int Ed. 2013;52:14152–14156. Doi: 10.1002/anie.201306724.
  51. Xu Z, Zhao Y, Wang X, Lin TA. Thermally Healable Polyhedral Oligomeric Silsesquioxane (POSS) Nanocomposite based on Diels-Alder chemistry. Chem Commun. 2013;49:6755–6757. Doi: 10.1039/c3cc43432j.
  52. Engel T, Kickelbick G. Self-Healing Nanocomposites from Silica – Polymer Core – Shell Nanoparticles. Polym Int. 2014;63:915–923. Doi: 10.1002/pi.4642.
  53. Engel T, Kickelbick G. Furan-Modified Spherosilicates as Building Blocks for Self-Healing Materials. Eur J Inorg Chem. 2015;2015:1226–1232. Doi: 10.1002/ejic.201402551.
  54. Torres-Lugo M, Rinaldi C. Thermal Potentiation of Chemotherapy by Magnetic Nanoparticles. Nanomedicine. 2013;8:1689–1707. Doi: 10.2217/nnm.13.146.
  55. Hohlbein N, Shaaban A, Bras AR, Pyckhout-Hintzen W, Schmidt AM. Self-healing Dynamic Bond-based Rubbers: Understanding the Mechanisms in Ionomeric Elastomer Model Systems. Phys Chem Chem Phys. 2015;17:21005–21017. Doi: 10.1039/C5CP00620A.
  56. Wu CS, Kao TH, Li HY, Liu YL. Preparation of Polybenzoxazine-functionalized Fe3O4 Nanoparticles through in situ Diels–Alder Polymerization for High Performance Magnetic Polybenzoxazine/Fe3O4 Nanocomposites. Compos Sci Technol. 2012;72:1562–1567. Doi: 10.1016/j.compscitech.2012.06.018.
  57. Menon AV, Madras G, Bose S. Ultrafast Self-Healable Interfaces in Polyurethane Nanocomposites Designed Using Diels–Alder “Click” as an Efficient Microwave Absorber. ACS Omega. 2018;3:1137–1146. Doi: 10.1021/acsomega.7b01845.
  58. Engel T, Kickelbick G. Thermoreversible Reactions on Inorganic Nanoparticle Surfaces: Diels–Alder Reactions on Sterically Crowded Surfaces. Chem Mater. 2013;25:149–157. Doi:10.1021/cm303049k.
  59. Schäfer S, Kickelbick G. Self-Healing Polymer Nanocomposites based on Diels-Alder-reactions with Silica Nanoparticles: The Role of the Polymer Matrix. Polymer. 2015;69:357–368. Doi: 10.1016/j.polymer.2015.03.017.
  60. Park JS, Darlington T, Starr AF, Takahashi K, Riendeau J, Thomas Hahn H. Multiple Healing Effect of Thermally Activated Self-Healing Composites based on Diels–Alder reaction. Compos Sci Technol. 2010;70:2154–2159. Doi: 10.1016/j.compscitech.2010.08.017.
  61. Li J, Liang J, Li L, Ren F, Hu W, Li J, et al. Healable Capacitive Touch Screen Sensors Based on Transparent Composite ElectrodesComprising Silver Nanowires and a Furan/Maleimide Diels-Alder Cycloaddition Polymer. ACS Nano. 2014;8:12874–12882. Doi: 10.1021/nn506610p.
  62. Sun S, Zeng H, Robinson DB, Raoux S, Rice PM, Wang SX, et al. Monodisperse MFe2O4 (M = Fe, Co, Mn) Nanoparticles. J Am Chem Soc. 2004;126:273–279. Doi: 10.1021/ja0380852.
  63. Frison R, Cernuto G, Cervellino A, Zaharko O, Colonna GM, Guagliardi A, et al. Magnetite–Maghemite Nanoparticles in the 5–15 nm Range: Correlating the Core–Shell Composition and the Surface Structure to the Magnetic Properties. A Total Scattering Study. Chem Mater. 2013;25:4820–4827. Doi: 10.1021/cm403360f.
  64. Santoyo Salazar J, Perez L, de Abril O, Truong Phuoc L, Ihiawakrim D, Vazquez M, et al. Magnetic Iron Oxide Nanoparticles in 10–40 nm Range: Composition in Terms of Magnetite/Maghemite Ratio and Effect on the Magnetic Properties. Chem Mater. 2011;23:1379–1386. Doi: 10.1021/cm103188a.
  65. Guerrero G, Mutin PH, Vioux A. Anchoring of Phosphonate and Phosphinate Coupling Molecules on Titania Particles. Chem Mater. 2001;13:4367–4373. Doi: 10.1021/cm001253u.
  66. Babu K, Dhamodharan R. Grafting of Poly(methyl methacrylate) Brushes from Magnetite Nanoparticles Using a Phosphonic Acid Based Initiator by Ambient Temperature Atom Transfer Radical Polymerization (ATATRP). Nanoscale Res Lett. 2008;3:109–117. Doi: 10.1007/s11671-008-9121-9.
  67. Mohapatra S, Pramanik P. Synthesis and Stability of Functionalized Iron Oxide Nanoparticles using Organophosphorus Coupling Agents. Colloids Surf. 2009;339:35–42. Doi: 10.1016/j.colsurfa.2009.01.009.
  68. Larsen BA, Hurst KM, Ashurst WR, Serkova NJ, Stoldt CR. Mono and Dialkoxysilane Surface Modification of Superparamagnetic Iron Oxide Nanoparticles for Application as Magnetic Resonance Imaging Contrast Agents. J Mater Res. 2012;27:1846–1852. Doi: 10.1557/jmr.2012.160.
  69. Davis K, Qi B, Witmer M, Kitchens CL, Powell BA, Mefford OT. Quantitative Measurement of Ligand Exchange on Iron Oxides via Radiolabelled Oleic Acid. Langmuir. 2014;30:10918–10925. Doi: 10.1021/la502204g.
  70. Feichtenschlager B, Pabisch S, Peterlik H, Kickelbick G. Nanoparticle Assemblies as Probes for Self-Assembled Monolayer Characterization: Correlation between Surface Functionalization and Agglomeration Behavior. Langmuir. 2012;28:741–750. Doi: 10.1021/la2023067.
  71. Musa OM. Handbook of Maleic Anhydride Based Materials: Syntheses, Properties and Applications. Springer International Publishing: Switzerland. 2016;p 175ff.
  72. Sauer R, Froimowicz P, Scholler K, Cramer JM, Ritz S, Mailander V, et al. Design, Synthesis, and Miniemulsion Polymerization of New Phosphonate Surfmers and Application Studies of the Resulting Nanoparticles as Model Systems for Biomimetic Mineralization and Cellular Uptake. Chem Eur J. 2012;18:5201–5212. Doi: 10.1002/chem.201103256.
  73. Lu C, Bhatt LR, Jun HY, Park SH, Chai KY. Carboxyl–Polyethylene Glycol–Phosphoric Acid: A Ligand for highly stabilized Iron Oxide Nanoparticles. J Mater Chem. 2012;22:19806–19811. Doi: 10.1039/c2jm34327d.
  74. Patsula V, Kosinova L, Lovric M, Ferhatovic Hamzic L, Rabyk M, Konefal R, et al. Superparamagnetic Fe3O4 Nanoparticles: Synthesis by Thermal Decomposition of Iron(III) Glucuronate and Application in Magnetic Resonance Imaging. ACS Appl Mater Interfaces. 2016;8:7238–7247. Doi: 10.1021/acsami.5b12720.
  75. Pothayee N, Balasubramaniam S, Davis RM, Riffle JS, Carroll MRJ, Woodward RC, et al. Synthesis of ‘ready-to-adsorb’ Polymeric Nanoshells for Magnetic Iron Oxide Nanoparticles via Atom Transfer Radical Polymerization. Polymer. 2011;52:1356–1366. Doi: 10.1016/j.polymer.2011.01.047.
  76. Daou J, Begin-Colin S, Grenèche JM, Thomas F, Derory A, Bernhardt P, et al. Phosphate Adsorption Properties of Magnetite-Based Nanoparticles. Chem Mater. 2007;19:4494–4505. Doi: 10.1021/cm071046v.
  77. Breucker L, Landfester K, Taden A. Phosphonic Acid-Functionalized Polyurethane Dispersions with Improved Adhesion Properties. ACS Appl Mater Interfaces. 2015;7:24641–24648. Doi: 10.1021/acsami.5b06903.
  78. Sahoo Y, Pizem H, Fried T, Golodnitsky D, Burstein L, Sukenik CN, et al. Alkyl Phosphonate/Phosphate Coating on Magnetite Nanoparticles: A Comparison with Fatty Acids. Langmuir. 2001;17:7907–7911. Doi: 10.1021/la010703.
  79. Longo RC, Cho K, Schmidt WG, Chabal YJ, Thissen P. Monolayer Doping via Phosphonic Acid Grafting on Silicon: Microscopic Insight from Infrared Spectroscopy and Density Functional Theory Calculations. Adv Funct Mater. 2013;23:3471–3477. Doi: 10.1002/adfm.201202808.
  80. Luschtinetz R, Seifert G, Jaehne E, Adler HJP. Infrared Spectra of Alkylphosphonic Acid Bound to Aluminium Surfaces. Macromol Symp. 2007;254:248–253. Doi: 10.1002/masy.200750837.
  81. Thomas LC, Chittenden RA. Characteristic Infrared Absorption Frequencies of Organophosphorus Compounds-II. P-O-(X) Bonds. Spectrochim. Acta. 1964;20:489–502. Doi: 10.1016/0371-1951(64)800448.
  82. Quinones R, Shoup D, Behnke G, Peck C, Agarwal S, Gupta RK, et al. Study of Perfluorophosphonic Acid Surface Modifications on Zinc Oxide Nanoparticles. Materials. 2017;10:1–16. Doi:10.3390/ma10121363.
  83. Lalatonne Y, Paris C, Serfaty JM, Weinmann P, Lecouvey M, Motte L. Bis-Phosphonates-Ultra Small Superparamagnetic Iron Oxide Nanoparticles: A Platform towards Diagnosis and Therapy. Chem Commun. 2008;2553–2555. Doi: 10.1039/b801911h.
  84. Jastrzebski W, Sitarz M, Rokita M, Bulat K. Infrared Spectroscopy of different Phosphates Structures. Spectrochim. Acta Part A. 2011;79:722–727. Doi: 10.1016/j.saa.2010.08.044.
  85. Brodard-Severac F, Guerrero G, Maquet J, Florian P, Gervais C, Mutin PH. High-Field 17O MAS NMR Investigation of Phosphonic Acid Monolayers on Titania. Chem Mater. 2008;20:5191–5196. Doi: 10.1021/cm8012683.
  86. Brice-Profeta S, Arrio MA, Tronc E, Menguy N, Letard I, Cartierdit Moulin C, et al. Magnetic Order in g-Fe2O3 Nanoparticles: A XMCD Study. J Magn Magn Mater. 2005;288:354–365. Doi: 10.1016/j.jmmm.2004.09.120.
  87. Tronc E, Ezzir A, Cherkaoui R, Chanéac C, Noguès M, Kachkachi H,  et al. Surface-Related Properties of g-Fe2O3 Nanoparticles. J Magn Magn Mater. 2000;221:63–79. Doi: 10.1016/S0304-8853(00)00369-3.
  88. Yee C, Kataby G, Ulman A, Prozorov T, White H, King A, et al. Self-Assembled Monolayers of Alkanesulfonic and -phosphonic Acids on Amorphous Iron Oxide Nanoparticles. Langmuir. 1999;15:7111–7115. Doi: 10.1021/la990663y.
  89. Jolivet JP, Chaneac C, Tronc E. Iron Oxide Chemistry. From Molecular Clusters to Extended Solid Networks. Chem. Commun. 2004;481–487:10.1039/B304532N.
  90. Campbell VE, Tonelli M, Cimatti I, Moussy JB, Tortech L, Dappe YJ, et al. Engineering the Magnetic Coupling and Anisotropy at the Molecule-Magnetic Surface Interface in Molecular Spintronic Devices. Nat Commun. 2016;7:13646–10. Doi: 10.1038/ncomms13646.
  91. Pabisiak T, Winiarski MJ, Ossowski T, Kiejna A. Adsorption of Gold Subnano-Structures on a Magnetite (111) Surface and their Interaction with CO. Phys Chem Chem Phys. 2016;18:18169–18179. Doi. 10.1039/C6CP03222B.
  92. Gomes R, Hassinen A, Szczygiel A, Zhao Q, Vantomme A, Martins JC, et al. Binding of Phosphonic Acids to CdSe Quantum Dots: A Solution NMR Study. J Phys Chem Lett. 2011;2:145–152. Doi: 10.1021/jz1016729.
  93. Chun YJ, Park JN, Oh GM, Hong SI, Kim YJ. Synthesis of ω-Phthalimidoalkylphosphonates. Synthesis. 1994;1994:909–910. Doi: 10.1055/s-1994-25599.


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