Hydrogen Bond-driven Assembly of Stilbazolium Dye with Zinc Chloride: X-aggregation Induced Photoluminescence and Dual Stimuli-responsive Performance

• 作者: CHEN Zhao-Hua GUO Cai-Hua LU Zhen-Hua YANG Qin-Tian
• 来源期刊: 结构化学
• 年，卷（期）: 2020,（10）
• 所属期刊栏目: coordination chemistry
• 页码范围: 1841-1848
• 页数: 8页
• 语种: 英文
• DOI: 10.14102/j.cnki.0254-5861.2011-2714

摘要

Combination of D-π-A stilbazolium-type dye DANP (DANP =trans-4-(4′-(N,N-diethylaminostyryl))-N-methyl-pyridinium) with zinc chloride results in a new hybrid (DANP-H)(ZnCl4) (1),and its structure was determined by single-crystal X-ray diffraction method.In the hybrid,two independent DANP-H2+ cations exhibit two kinds of configurations,i.e.,conjugation-broken and conjugation-maintained fashions,and the X-aggregation mode of (DANP-H)2+ cations is driven by strong C-H…Cl hydrogen bonds and C-H…π interactions.Consequently,blue-shift was observed in its adsorption spectrum,and unquenched red photoluminescence can be monitored.Interestingly,dual stimuli-responsive performance and reversible photo/thermochromic behaviors appeared,which can be assigned to the electron transfer from C1-3p/DANP-π to π* antibonding orbitals of the conjugation-maintained DANP.