Department of Materials Science and Engineering, South University of Science and Technology of China, Shenzhen, 518055, China.
Research Center for Advanced Materials and Biotechnology, Research Institute of Tsinghua University in Shenzhen, Shenzhen, 518057, China.
Adv Mater. 2017 Mar;29(12). doi: 10.1002/adma.201605497. Epub 2017 Jan 24.
A new design for second near-infrared window (NIR-II) molecular fluorophores based on a shielding unit-donor-acceptor-donor-shielding unit (S-D-A-D-S) structure is reported. With 3,4-ethylenedioxy thiophene as the donor and fluorene as the shielding unit, the best performance fluorophores IR-FE and IR-FEP exhibit an emission quantum yield of 31% in toluene and 2.0% in water, respectively, representing the brightest organic dyes in NIR-II region reported so far.
报告了一种基于屏蔽单元-给体-受体-给体-屏蔽单元（S-D-A-D-S）结构的新型近红外二区（NIR-II）分子荧光团的设计。以 3,4-亚乙基二氧基噻吩为给体，芴为屏蔽单元，最佳性能的荧光团 IR-FE 和 IR-FEP 在甲苯中的荧光量子产率分别为 31%，在水中为 2.0%，这代表了迄今为止报道的 NIR-II 区域最亮的有机染料。
