title: Color tunable and near white-light emission of two solvent-induced 2D lead(II) coordination networks based on a rigid ligand 1-tetrazole-4-imidazole-benzene.
abstract: Two new lead(II) coordination polymers, [Pb(NO3)(tzib)]n (1) and [Pb(tzib)2]n (2), were successfully synthesized from the reaction of a rigid ligand 1-tetrazole-4-imidazole-benzene (Htzib) and lead(II) nitrate in different solvents. The obtained polymers have been characterized by single-crystal X-ray diffraction analyses, which show that both polymers feature 2D layer structures. The inorganic anion nitrate in 1 shows a μ2-κO3:κO3 bridging mode to connect adjacent lead ions into a zigzag chain, and then the organic ligands tzib(-) join the neighboring chains into a 2D layer by a μ3-κN1:κN2:κN6 connection mode. In 2, there are two different bridging modes of the tzib(-) ligand: μ3-κN1:κN2:κN6 and μ3-κN1:κN6 to coordinate the lead ions into a 2D layer structure. Interestingly, both polymers displayed broadband emissions covering the entire visible spectra, which could be tunable to near white-light emission by varying excitation wavelengths.
authors.affiliation: State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China. zfk@fjirsm.ac.cn.
authors.forename: Jun
authors.initials: J
authors.lastname: Chen
authors.forename: Qing
authors.initials: Q
authors.lastname: Zhang
authors.forename: Zhi-Fa
authors.initials: ZF
authors.lastname: Liu
authors.forename: Shuai-Hua
authors.initials: SH
authors.lastname: Wang
authors.forename: Yu
authors.initials: Y
authors.lastname: Xiao
authors.forename: Rong
authors.initials: R
authors.lastname: Li
authors.forename: Jian-Gang
authors.initials: JG
authors.lastname: Xu
authors.forename: Ya-Ping
authors.initials: YP
authors.lastname: Zhao
authors.forename: Fa-Kun
authors.initials: FK
authors.lastname: Zheng
authors.forename: Guo-Cong
authors.initials: GC
authors.lastname: Guo