Benzo[1,2-c;4,5-c']bis[1,2,5]thiadiazole-porphyrin-based near-infrared dyes  

作　　者：Yi Liu Shaofei Wu Tullimilli Y.Gopalakrishna Jishan Wu 

机构地区：[1]Department of Chemistry,National University of Singapore,Singapore,Singapore [2]Joint School of National University of Singapore and Tianjin University,International Campus of Tianjin University,Fuzhou,Binhai New City,China

出　　处：《SmartMat》2021年第3期398-405,共8页智能材料（英文）

基　　金：supported by NRF(NRF-NRFI05-2019-0005);MOE Tier 2 grant(MOE2018-T2-2-094).

摘　　要：Benzo[1,2-c;4,5-cʹ]bis[1,2,5]thiadiazole(BBT)has intrinsic diradical character and herein it is used to construct organic near-infrared(NIR)dyes together with the aromatic porphyrin unit.Three BBT-porphyrin hybrid dyes 1-3 with different linkage modes are synthesized by Pd-catalyzed Sonogashira crosscoupling between meso-ethynylene porphyrin units and monobromo-/dibromo-BBT,or through unexpected homocoupling between the BBT units.They all possess small open-shell diradical character and display intense NIR absorption in the range of 800-1000 nm.They also exhibit amphoteric redox behavior.BBT-based diradicaloids are thus good candidates for organic NIR dyes.

关 键 词：benzo[1 2-c 4 5-c']bis[1 2 5]thiadiazole diradical character near-infrared dye PORPHYRIN 

分 类 号：O64[理学—物理化学]