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Hydrophobic Metal Halide Perovskites for Visible‐Light Photoredox C−C Bond Cleavage and Dehydrogenation Catalysis
Author(s) -
Hong Zonghan,
Chong Wee Kiang,
Ng Andrew Yun Ru,
Li Mingjie,
Ganguly Rakesh,
Sum Tze Chien,
Soo Han Sen
Publication year - 2019
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201812225
Subject(s) - dehydrogenation , photochemistry , chemistry , halide , alkyl , catalysis , photocatalysis , bond cleavage , decarboxylation , visible spectrum , indoline , photoluminescence , metal , metal halides , tin , inorganic chemistry , materials science , organic chemistry , optoelectronics
Two‐dimensional lead and tin halide perovskites were prepared by intercalating the long alkyl group 1‐hexadecylammonium (HDA) between the inorganic layers. We observed visible‐light absorption, narrow‐band photoluminescence, and nanosecond photoexcited lifetimes in these perovskites. Owing to their hydrophobicity and stability even in humid air, we applied these perovskites in the decarboxylation and dehydrogenation of indoline‐2‐carboxylic acids. (HDA) 2 PbI 4 or (HDA) 2 SnI 4 were investigated as photoredox catalysts for these reactions, and quantitative conversion and high yields were observed with the former.