title: Boron-phenylpyrrin dyes: facile synthesis, structure, and pH-sensitive properties.
abstract: Boron-phenylpyrrin dyes: In the presence of BF3⋅OEt2, 4-(diethylamino)salicylaldehyde reacts with substituted pyrroles to give boron-phenylpyrrin dyes, which contain a central boron-containing seven-membered ring. Upon protonation in acidic solution, the complexes, with a large Stokes shift, exhibit a color change and a unique red shift in both the electronic absorption and fluorescence emission spectra (see picture), thus rendering them new analogues of boron-dipyrrin dyes that can be used as pH sensors.
authors: Beijing Key Laboratory for Science and Application of Functional, Molecular and Crystalline Materials, Department of Chemistry, University of Science and Technology Beijing, Beijing 100083, China.
authors: Yuting
authors: Y
authors: Chen
authors: Dongdong
authors: D
authors: Qi
authors: Luyang
authors: L
authors: Zhao
authors: Wei
authors: W
authors: Cao
authors: Chunhua
authors: C
authors: Huang
authors: Jianzhuang
authors: J
authors: Jiang