Wei Chen1, Shi Xu1, Jacob J Day1, Difei Wang2, Ming Xian1. 1. Department of Chemistry, Washington State University, Pullman, WA, 99164, USA. 2. Division of Cancer Epidemiology and Genetics, NCI, NIH, Rockville, MD, 20850, USA.
Abstract
Near-infrared (NIR) fluorescent dyes with favorable photophysical properties are highly useful for bioimaging, but such dyes are still rare. The development of a unique class of NIR dyes via modifying the rhodol scaffold with fused tetrahydroquinoxaline rings is described. These new dyes showed large Stokes shifts (>110 nm). Among them, WR3, WR4, WR5, and WR6 displayed high fluorescence quantum yields and excellent photostability in aqueous solutions. Moreover, their fluorescence properties were tunable by easy modifications on the phenolic hydroxy group. Based on WR6, two NIR fluorescent turn-on probes, WSP-NIR and SeSP-NIR, were devised for the detection of H2 S. The probe SeSP-NIR was applied in visualizing intracellular H2 S. These dyes are expected to be useful fluorophore scaffolds in the development of new NIR probes for bioimaging.
Near-infrared (n class="Chemical">NIR) fluorescent dyes with favorable photophysical properties are highly useful for bioimaging, but such dyes are still rare. The development of a unique class of NIR dyes via modifying the rhodol scaffold with fused tetrahydroquinoxaline rings is described. These new dyes showed large Stokes shifts (>110 nm). Among them, WR3, WR4, WR5, and WR6 displayed high fluorescence quantum yields and excellent photostability in aqueous solutions. Moreover, their fluorescence properties were tunable by easy modifications on the phenolic hydroxy group. Based on WR6, two NIR fluorescent turn-on probes, WSP-NIR and SeSP-NIR, were devised for the detection of H2 S. The probe SeSP-NIR was applied in visualizing intracellular H2 S. These dyes are expected to be useful fluorophore scaffolds in the development of new NIR probes for bioimaging.
Authors: Jonathan B Grimm; Anand K Muthusamy; Yajie Liang; Timothy A Brown; William C Lemon; Ronak Patel; Rongwen Lu; John J Macklin; Philipp J Keller; Na Ji; Luke D Lavis Journal: Nat Methods Date: 2017-09-04 Impact factor: 28.547
Authors: Yibin Zhang; Shuai Xia; Logan Mikesell; Nick Whisman; Mingxi Fang; Tessa E Steenwinkel; Kai Chen; Rudy L Luck; Thomas Werner; Haiying Liu Journal: ACS Appl Bio Mater Date: 2019-09-27