Photoinduced electron and energy transfer within a pyrene-perylenediimide dyad embedded in polymer matrixes
作者： Wenmiao Chen , Zhen Dai , Haiquan Liu , Heyuan Liu , Yan Shi
DOI: 10.1016/J.JLUMIN.2015.07.046
关键词: Absorption (electromagnetic radiation) 、 Electron transfer 、 Covalent bond 、 Photochemistry 、 Pyrene 、 Time-resolved spectroscopy 、 Polymer 、 Chemistry 、 Electron 、 Polar
摘要: Abstract To investigate the effects of polymer matrixes on competition between energy and electron transfer, a covalently linked pyrene-perylenediimide dyad ( PDI-PY ) has been prepared. Competition transfer from PY to PDI within is revealed by steady state absorption fluorescence spectra, as well time resolved spectra. Polar solvents accelerate while non-polar favor transfer. When embedded in matrix, becomes only photoinduced process PDI, whereas almost completely hindered. In polar still dominating process, but with remarkably decreased efficiency. The matrix much slower less efficient respect that solutions, faster more than matrixes. This result suggests are ideal environment for constructing light harvesting systems, which some case can reduce disturbance
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