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Preparation and optical properties of composite materials based on polybenzimidazole and silver nanoparticles |
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| Authors: | A A Akovantseva N A Aksenova T S Zarkhina L I Krotova N V Minaev A O Rybaltovskii B Ch Kholkhoev I A Farion V I Yusupov V F Burdukovskii V N Bagratashvili P S Timashev |
| Institution: | 1.Federal Research Center for Crystallography and Photonics,Russian Academy of Sciences, Troitsk,Moscow,Russia;2.Semenov Institute of Chemical Physics,Russian Academy of Sciences,Moscow,Russia;3.Research Institute of Nuclear Physics,Moscow State University,Moscow,Russia;4.Baikal Institute of Nature Management, Siberian Branch,Russian Academy of Sciences,Ulan-Ude, Buryatia,Russia;5.Sechenov First Moscow State Medical University,Moscow,Russia |
| Abstract: | Rigid-chain heat resistant polymers (with poly-2,2'-p-oxydiphenylene-5,5′-bisbenzimidazole as example) were impregnated for the first time with a silver-containing precursor in formic acid and in supercritical carbon dioxide. A procedure allowing the precursor reduction to silver nanoparticles both throughout the volume by thermal annealing of the films in the temperature interval 100–150°С and in the targeted mode using lasers operating at 405 and 532 nm was developed. It opens prospects for developing a process for production of heatresistant optical gratings and light guides. The reduces nanoparticles and their agglomerates have the size in the interval 50–200 nm and give a plasmon band in the range 450–460 nm. |
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