title: Development of a borondipyrromethene-based Zn2+ fluorescent probe: solvent effects on modulation sensing ability.
abstract: A borondipyrromethene-based Zn(2+) fluorescent probe BODPAQ was designed and synthesized. The chelators in BODPAQ, 2,2'-dipicolylamine (DPA) and 8-aminoquinoline (AQ), coordinate to Zn(2+) in a synergic manner. As a result, BODPAQ displays high Zn(2+) selectivity with a dramatic enhanced emission accompanied by a notable hypsochromic shift due to the binary inhibition effect of PET and ICT mechanisms, enabling the detection of Zn(2+) by both ratiometric and normal turn-on fluorescence methods in acetonitrile. Interestingly, the sensitivity of BODPAQ towards Zn(2+) changes upon varying the compositions of buffer solutions. In 3-morpholinopropanesulfonic acid (MOPS) buffer aqueous solution (50% CH(3)CN), BODPAQ displays the highest sensitivity for Zn(2+), while in citrate-phosphate buffer, BODPAQ shows no response to Zn(2+).
authors.affiliation: Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science & Technology, Shanghai, 200237, P. R. China. zhaocchang@ecust.edu.cn
authors.forename: Chunchang
authors.initials: C
authors.lastname: Zhao
authors.forename: Yulin
authors.initials: Y
authors.lastname: Zhang
authors.forename: Peng
authors.initials: P
authors.lastname: Feng
authors.forename: Jian
authors.initials: J
authors.lastname: Cao
mesh_terms: D001896:Boron Compounds / Q000138:chemical synthesis* / Q000737:chemistry*; D002614:Chelating Agents / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000138:chemical synthesis* / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D015394:Molecular Structure; D012997:Solvents / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D015032:Zinc / Q000737:chemistry*
chemical_list: D001896:Boron Compounds; D002614:Chelating Agents; D005456:Fluorescent Dyes; D012997:Solvents; D015032:Zinc