120th General Meeting of the KCS

Type Poster Presentation
Area Inorganic Chemistry
Room No. Exhibition Hall 2+3
Time 10월 19일 (목요일) 11:00~12:30
Code INOR.P-15
Subject Stepwise Synthesis and Selective Sensing of Nitrobenzene Using Copper(I) Coordination Polymers
Authors Hyunjin Park, Hansu Im, Tae Ho Kim*, Jineun Kim*
Department of Chemistry, Gyeongsang National University, Korea
Abstract Five Copper(I) coordination polymers(CPs), [Cu2I2L2]n (1), [Cu4I4L2]n (2a),{[Cu4I4L2]·2CH3CN}n (2b), {[Cu4I4L4]·0.5C6H6}n (2c), {[Cu6I6L2]·2C3H6O}n (3) have been prepared by self-assembly reactions between CuI and 2-(2-benzylthio)ethyl)pyrazine (L). CPs 1-3 are determined by single crystal x-ray diffraction. CPs 1 and 3 were crystalized in space group orthorhombic Pbca and monoclinic P21/n, respectively. CPs 2a-2c were crystalized in space group triclinic P-1. CP 1 has a 2D network structure based on dimer-like Cu2I2 cluster nodes and CPs 2a-2c have 1D loop chain structures based on stair step-like Cu4I4 cluster nodes, in which solvent molecules are different. CP 3 shows a 2D network structure based on 1D stair-step of stair-step (Cu6I6)n polymers. The solvent-mediated reversible crystal-to-crystal transformations between CPs 2a-2c were achieved by exposing solvent vapor or soaking the crystalline samples in diverse solvents (acetonitrile, benzene). Interestingly, CP 3 has been stepwisely synthesized from CP 1 via CP 2b by removal of L, which cannot be obtained by the direct reaction of L and CuI. Moreover, emission of CP 2b is selectively quenched by nitrobenzene with good sensitivity.
E-mail hj77park@naver.com