新型共晶(E)-9-STAN∶TCNB的制备与发光性质研究
The Preparation and Studies on Luminescent Properties of Novel Cocrystal(E)-9-STAN∶TCNB
申月 1侯佳旺 1姜新东 1段文龙 1阎峰1
作者信息
- 1. 沈阳化工大学辽宁省功能染料重点实验室,辽宁沈阳 110142
- 折叠
摘要
为了研究共晶结构与其发光性质之间的关系,合成了一种蒽衍生物(E)-9-STAN,采用缓慢的溶剂挥发法与TCNB制备出共晶(E)-9-STAN∶TCNB,通过X射线单晶衍射、稳态和瞬态荧光光谱以及理论模拟进行了详细分析与表征.研究表明:共晶(E)-9-STAN∶TCNB中呈现出混合堆积(…ABABA…)的结构,分子间多重强的C—H…N和C—H…O氢键相互作用稳定了晶体构型;相比于发蓝光的AN、绿光的(E)-9-STAN晶体和橙光的AN∶TCNB共晶,共晶(E)-9-STAN∶TCNB荧光明显红移,为红色发射,归因于其特殊的分子结构导致的强烈的分子间电荷转移相互作用[(E)-9-STAN作为给体,TCNB作为受体].该研究为新型有机红光共晶材料的设计提供了新思路.
Abstract
In order to investigate the relationship between cocrystal structures and their properties,an an-thracene derivative(E)-9-STAN was synthesized,and then cocrystal(E)-9-STAN∶TCNB was pre-pared by slow solvent evaporation method with TCNB.The detailed analysis and characteristic were car-ried out by X-ray single crystal diffraction,steady state and transient fluorescence spectra and theoretical calculations.The structure studies indicate that(E)-9-STAN∶TCNB cocrystal displays mixed stacking mode(…ABABA…),and there are multiple strong intermolecular C—H…N and C—H…O hydrogen bonding interactions between molecules stabilize the crystal configuration.Interestingly,compared with blue light-emitting anthracene crystal,green light-emitting(E)-9-STAN crystal and orange light-e-mitting anthracene:TCNB cocrystal,(E)-9-STAN∶TCNB cocrystal exhibits obvious redshift with red emission,depending on strong intermolecular charge transfer interactions caused by its special molecular structures in which(E)-9-STAN as donor and TCNB as acceptor.This research provides a new oppor-tunity for the design of novel organic red light-emitting cocrystal materials.
关键词
有机共晶/发光性质/电荷转移相互作用/晶体结构Key words
organic cocrystal/luminescent properties/charge transfer interaction/crystal structure引用本文复制引用
出版年
2024
NETL
NSTL
万方数据