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Mechanochromic and Selective Vapochromic Solid-State Luminescence of a Dinuclear Cuprous Complex
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2023-07-09 , DOI: 10.1021/acs.inorgchem.3c01107 Rui Zhang 1 , Jin-Wang Liu 1 , Wei-Yong Zhong 1 , Jing-Lin Chen 1, 2 , Feng Zhao 3 , Sui-Jun Liu 1 , He-Rui Wen 1
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2023-07-09 , DOI: 10.1021/acs.inorgchem.3c01107 Rui Zhang 1 , Jin-Wang Liu 1 , Wei-Yong Zhong 1 , Jing-Lin Chen 1, 2 , Feng Zhao 3 , Sui-Jun Liu 1 , He-Rui Wen 1
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The unraveling of the stimuli-responsive mechanism is crucial to the design and precise synthesis of stimuli-responsive luminescent materials. We report herein the mechanochromic and selective vapochromic solid-state luminescence properties of a new bimetallic cuprous complex [{Cu(bpmtzH)}2(μ-dppm)2](ClO4)2 (1), and the corresponding response mechanisms are elucidated by investigating its two different solvated polymorphs 1·2CH2Cl2 (1-g) and 1·2CHCl3 (1-c). Green-emissive 1-g and cyan-emissive 1-c can be interconverted upon alternate exposure to CHCl3 and CH2Cl2 vapors, which is principally attributable to a combined alteration of both intermolecular NHbpmtzH···OClO3– hydrogen bonds and intramolecular “triazolyl/phenyl” π···π interactions induced by different solvents. Solid-state luminescence mechanochromism present in 1-g and 1-c is mainly ascribed to the grinding-induced breakage of the NHbpmtzH···OClO3– hydrogen bonds. It is suggested that intramolecular π···π-triazolyl/phenyl interactions are affected by different solvents but not by grinding. The results provide new insights into the design and precise synthesis of multi-stimuli-responsive luminescent materials by the comprehensive use of intermolecular hydrogen bonds and intramolecular π···π interactions.
中文翻译：
双核亚铜配合物的机械致色和选择性气致变色固态发光
刺激响应机制的阐明对于刺激响应发光材料的设计和精确合成至关重要。我们在此报道了一种新型双金属亚铜配合物[{Cu(bpmtzH)} 2 (μ-dppm) 2 ](ClO 4 ) 2 ( 1 )的机械致变色和选择性气致变色固态发光特性，并阐明了相应的响应机制通过研究其两种不同的溶剂化多晶型物1 ·2CH 2 Cl 2 ( 1-g )和1 ·2CHCl 3 ( 1-c )。绿光发射1-g和青色发射1-c在交替暴露于CHCl 3和CH 2 Cl 2蒸气时可以相互转化，这主要归因于分子间NH bpmtzH …OClO 3 –氢键的组合改变以及不同溶剂引起的分子内“三唑基/苯基”π·π相互作用。1-g和1-c中存在的固态发光力致变色现象主要归因于研磨引起的NH bpmtzH ·OClO 3 –氢键的断裂。表明分子内π·π-三唑基/苯基相互作用受不同溶剂的影响，但不受研磨的影响。该研究结果为综合利用分子间氢键和分子内π·π相互作用设计和精确合成多刺激响应发光材料提供了新的见解。
更新日期：2023-07-09
中文翻译：
双核亚铜配合物的机械致色和选择性气致变色固态发光
刺激响应机制的阐明对于刺激响应发光材料的设计和精确合成至关重要。我们在此报道了一种新型双金属亚铜配合物[{Cu(bpmtzH)} 2 (μ-dppm) 2 ](ClO 4 ) 2 ( 1 )的机械致变色和选择性气致变色固态发光特性，并阐明了相应的响应机制通过研究其两种不同的溶剂化多晶型物1 ·2CH 2 Cl 2 ( 1-g )和1 ·2CHCl 3 ( 1-c )。绿光发射1-g和青色发射1-c在交替暴露于CHCl 3和CH 2 Cl 2蒸气时可以相互转化，这主要归因于分子间NH bpmtzH …OClO 3 –氢键的组合改变以及不同溶剂引起的分子内“三唑基/苯基”π·π相互作用。1-g和1-c中存在的固态发光力致变色现象主要归因于研磨引起的NH bpmtzH ·OClO 3 –氢键的断裂。表明分子内π·π-三唑基/苯基相互作用受不同溶剂的影响，但不受研磨的影响。该研究结果为综合利用分子间氢键和分子内π·π相互作用设计和精确合成多刺激响应发光材料提供了新的见解。
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