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Photochromic properties of modified nanodiamonds |
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| Authors: | O V Venidiktova T M Valova V A Barachevsky A O Ait P V Lebedev-Stepanov A Ya Vul L S Koltsova A I Shienok N L Zaichenko |
| Institution: | 1.Photochemistry Center, Russian Academy of Sciences,Federal Scientific Research Center Crystallography and Photonics,Moscow,Russia;2.Interdepartmental Center of Analytical Research,Russian Academy of Sciences,Moscow,Russia;3.National Research Nuclear University MEPhI,Moscow,Russia;4.Ioffe Physical Technical Institute,Russian Academy of Sciences,St. Petersburg,Russia;5.Semenov Institute of Chemical Physics,Russian Academy of Sciences,Moscow,Russia |
| Abstract: | A functionalization of the surface of detonation nanodiamonds by photochromic spirocompounds from the classes of spiropyrans and spirooxazines has been carried out for the first time. A comparative study of the interaction of nanodiamonds with positive and negative potential is performed by the spectral–kinetic method, which shows the possibility of surface modification by only functionalized molecules of spirocompounds with the formation of surface proton complexes. This is confirmed by the hypsochromic shift of the absorption bands of the photoinduced merocyanine forms of adsorbed molecules of spirocompounds and by the decrease of the speed of their dark relaxation to the initial state in the presence of nanodiamonds with a negative potential. |
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