title: A simple and highly selective 2,2-diferrocenylpropane-based multi-channel ion pair receptor for Pb(2+) and HSO4(-).
abstract: A structurally simple, 2,2-diferrocenylpropane-based ion pair receptor 1 was synthesized and characterized by (1)H NMR, (13)C NMR, HRMS, elemental analyses, and single-crystal X-ray diffraction. The ion pair receptor 1 showed excellent selectivity and sensitivity towards Pb(2+) with multi-channel responses: a fluorescence enhancement (more than 42-fold), a notable color change from yellow to red, redox anodic shift (ΔE1/2 = 151 mV), while HSO4(-) promoted fluorescence enhancement when Pb(2+) or Zn(2+) was bonded to the cation binding-site. (1)H NMR titration and density functional theory were performed to reveal the sensing mechanism based on photo-induced electron transfer (PET).
authors.affiliation: Department of Chemistry, Fuzhou University, Fuzhou 350116, China. LCX395314748@163.com.
authors.forename: Qian
authors.initials: Q
authors.lastname: Wan
authors.forename: Ji-Bin
authors.initials: JB
authors.lastname: Zhuo
authors.forename: Xiao-Xue
authors.initials: XX
authors.lastname: Wang
authors.forename: Cai-Xia
authors.initials: CX
authors.lastname: Lin
authors.forename: Yao-Feng
authors.initials: YF
authors.lastname: Yuan