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

作　　者：申月 侯佳旺 姜新东[1] 段文龙 阎峰[1] SHEN Yue;HOU Jiawang;JIANG Xindong;DUAN Wenlong;YAN Feng(Shenyang University of Chemical Technology,Shenyang,110142)

机构地区：[1]沈阳化工大学辽宁省功能染料重点实验室,辽宁沈阳110142

出　　处：《沈阳化工大学学报》2024年第3期238-243,共6页Journal of Shenyang University of Chemical Technology

基　　金：国家自然科学基金资助项目(22078201);辽宁省教育厅科学基金(LJKM220220791);超分子结构与材料国家重点实验室开放课题(sklssm2024026)。

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.In order to investigate the relationship between cocrystal structures and their properties,an anthracene derivative(E)-9-STAN was synthesized,and then cocrystal(E)-9-STAN:TCNB was prepared by slow solvent evaporation method with TCNB.The detailed analysis and characteristic were carried 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-emitting 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 opportunity 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 

分 类 号：O69[理学—化学]