title: A highly selective OFF-ON red-emitting phosphorescent thiol probe with large stokes shift and long luminescent lifetime.
abstract: An OFF-ON red-emitting phosphorescent thiol probe is designed by using the (3)MLCT photophysics of Ru(II) complexes, i.e., with Ru(II) as the electron donor. The probe is non-luminescent because the MLCT is corrupted by electron transfer from Ru(II) to an intramolecular electron sink (2,4-dinitrobenzenesulfonyl). Thiols cleave the electron sink, and the MLCT is re-established. Phosphorescence at 598 nm was enhanced by 90-fold, with a 143 nm (5256 cm(-1)) Stokes shift and a 1.1 mus luminescent lifetime.
authors.affiliation: State Key Laboratory of Fine Chemicals, School of Chemical Engineering, 158 Zhongshan Road, Dalian University of Technology, Dalian 116012, PR China.
authors.forename: Shaomin
authors.initials: S
authors.lastname: Ji
authors.forename: Huimin
authors.initials: H
authors.lastname: Guo
authors.forename: Xiaolin
authors.initials: X
authors.lastname: Yuan
authors.forename: Xiaohuan
authors.initials: X
authors.lastname: Li
authors.forename: Haidong
authors.initials: H
authors.lastname: Ding
authors.forename: Peng
authors.initials: P
authors.lastname: Gao
authors.forename: Chunxia
authors.initials: C
authors.lastname: Zhao
authors.forename: Wenting
authors.initials: W
authors.lastname: Wu
authors.forename: Wanhua
authors.initials: W
authors.lastname: Wu
authors.forename: Jianzhang
authors.initials: J
authors.lastname: Zhao
mesh_terms: D004354:Drug Screening Assays, Antitumor; D005456:Fluorescent Dyes / Q000138:chemical synthesis* / Q000737:chemistry; D006801:Humans; D049449:Luminescence; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D012428:Ruthenium / Q000737:chemistry*; D013438:Sulfhydryl Compounds / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D005456:Fluorescent Dyes; D009942:Organometallic Compounds; D013438:Sulfhydryl Compounds; D012428:Ruthenium