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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 |
| Affiliation: | 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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