Preparation and optical properties of composite materials based on polybenzimidazole and silver nanoparticles

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. Identifiers journal ISSN : 1070-4272 journal e-ISSN : 1608-3296 DOI 10.1134/S107042721701013X https://www.sechenov.ru/science_and_innovation/repo/?PAGEN_1=12#abstract134931