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Nanometer‐Sized Reactor—A Porphyrin‐Based Model System for Anion Species
Author(s) -
Li Yongjun,
Zhao Yingjie,
Flood Amar H.,
Liu Chao,
Liu Huibiao,
Li Yuliang
Publication year - 2011
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201100633
Subject(s) - cationic polymerization , porphyrin , catalysis , radical , photochemistry , ion , chemistry , solvent , molecule , nanometre , host (biology) , chemical engineering , organic chemistry , biology , ecology , engineering
Although many cagelike molecules can create a catalytic environment for promoting chemical reactions, the construction of receptors that can host anionic species and sensitize their reaction is novel. Here we report the photochemically induced dimerization of the anion radicals of TCNQ (7,7,8,8‐tetracyano‐ para ‐quinodimethane) in organic solvent under aerobic conditions when they are encapsulated inside a cationic photoactive receptor. There is clear evidence for a rate increase of over two orders of magnitude, photosensitization of the host, and demonstrated turnover of the catalyst.