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To what extent can charge localization influence electron injection efficiency at graphene-porphyrin interfaces?
Manas R Parida1, Shawkat M Aly, Erkki Alarousu
1Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia. omar.abdelsaboor@kaust.edu.sa.
Abstract:
Controlling the electron transfer process at donor-acceptor interfaces is a research direction that has not yet seen much progress. Here, with careful control of the charge localization on the porphyrin macrocycle using β-cyclodextrin as an external cage, we are able to improve the electron injection efficiency from cationic porphyrin to graphene carboxylate by 120%. The detailed reaction mechanism is also discussed.
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