Substituent Influence on Structural and Luminescent Diversities of Cu3(pyrazolate)3-CunIn Coordination Supramolecular Isomers
Substituent Influence on Structural and Luminescent Diversities of Cu3(pyrazolate)3-CunIn Coordination Supramolecular Isomers
复制标题
取代基对 Cu3(pyrazolate)3-CunIn 配位超分子异构体结构和发光多样性的影响
DOI：
10.1021/acs.cgd.8b01476
复制
发表时间：
2018
影响因子：
3.8
通讯作者：
Li Dan
中科院分区：
文献类型：
--
作者：
Zhan Shun-Ze;Feng Tong;Lu Weigang;Razali Mohd R.;Li Dan
通过控制反应条件，以3-（4-吡啶基）-5-甲基-1H-吡唑（HL 4）和CuI为配体，合成了三个荧光异构配合物[Cu 3（L4）3]2[CuI]2（标记为配合物1，2和3）。平面三核Cu_3（L_4）_3和Cu_I/Cu_2 I_2单元通过N-Cu配位键整合到Cu_3 P_z_3-Cu_In体系中（P_z =吡唑基）。配合物1是通过π-酸···碱（Cu 3···I）和Cu···Cu相互作用形成的离散超分子聚集体。配合物2和3是两重互穿的三维骨架。通过在配体的5-位吡唑上预先安装一个甲基，实现了这种Cu_3 Pz_3-CunIn体系中CunIn（n = 1或2）单元的小尺寸和结构二聚化。这三种配合物表现出微妙的不同的黄色发光在紫外光照射下，在其固态，源自其各自的三重激发态的超分子配位发光体。这些结果表明，ST…
Three photoluminescent isomeric complexes [Cu3(L4)3]2[CuI]2 (labeled as complexes 1, 2, and 3) were prepared from the same bifunctional organic ligand HL4 (3-(4-pyridyl)-5-methyl-1H-pyrazole) and CuI by careful manipulation of the reaction conditions. Planar trinuclear Cu3(L4)3 and CuI/Cu2I2 units are integrated via N–Cu coordination bonds into Cu3Pz3-CunIn systems (Pz = pyrazolate). Complex 1 is a discrete supramolecular aggregate via cooperative π-acid···base (Cu3···I) and Cu···Cu interactions. Complexes 2 and 3 are 2-fold interpenetrated three-dimensional frameworks. The small size of the CunIn (n = 1 or 2) units and structural diversities in such Cu3Pz3-CunIn systems were realized by preinstalling a methyl group on pyrazole at the 5-position of the ligand. The three complexes exhibit subtly different yellow emissions under UV irradiation in their solid states, originating from their respective triplet excited states of the supramolecular coordination luminophores. These results demonstrate that the st...