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Singlet oxygen generation properties of isometrically dibromated thienyl-containing aza-BODIPYs
Xin-Dong Jiang1, Shuang Li2, Boris Le Guennic3
1College of Applied Chemistry, Shenyang University of Chemical Technology, Shenyang, 110142, China. xdjiang@syuct.edu.cn and State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China.
Abstract:
Isometrically dibromated thienyl-containing aza-BODIPYs CDB-1 and BDB-2 with potential use as photosensitizers (PSs) were successfully prepared and their photophysical properties were fully characterized. Singlet oxygen generation experiments were also performed. In this regard, PS CDB-1 was found to be more effective and had about two-fold rate enhancement compared to PS BDB-2. DFT and TD-DFT calculations helped to provide insights into the distinct intersystem crossing (ISC) processes observed for CDB-1 and BDB-2.
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