金(Ⅰ)-膦炔配合物设计合成及其光学性质研究
Design and optical properties of Gold(Ⅰ)alkynyl phosphine complexes
杜静 1范维 1卓灏 1徐海兵1
作者信息
- 1. 湖北省先进有机化学材料协同创新中心(湖北大学),有机功能分子合成与应用教育部重点实验室(湖北大学),湖北 武汉 430062
- 折叠
摘要
为了构建不同拓扑结构诱导的丰富发光行为,本研究利用萘环替代已报道的相似有机磷配体 L 中的联苯基团,利用构-效关系,实现有机金配合物不同光谱性能调控.为此,我们通过分步组装或炔金聚合物解聚分别获得了含萘环有机膦配体(L1)及 9-乙炔基蒽(L2)构建的前驱物 L1AuCl(1)和金(Ⅰ)配合物 L1AuL2(2).通过单晶衍射确定了晶体结构及其堆积模式,利用紫外可见吸收光谱及荧光光谱研究其在固、液中不同的光学性质与构-效关系.研究发现,含萘环的 1 发光行为完全不同于含联苯的 1'.而 2 中,由于 L2 的引入带来的空间位阻扭曲了 L1 中萘环基团的空间伸展方向,诱导 π…π堆积和氢键作用,不仅增强了其固态发光强度,而且使其激发发射窗口红移.
Abstract
To establish the relationship of luminescence dependent on topology,this study employed naphthalene rings of L1 to replace biphenyl groups in similar L,regulating optical property of organogold(Ⅰ)complex by structure-activity relationship.Moreover,the precursor L1AuCl(1)and L1AuL2(2)were obtained by step assembly or depolymerization of alkyny-gold polymer,respectively.The crystal structure and its packing mode were determined by single crystal diffraction,and the optical properties and structure-activity relationship in solid and liquid were studied by UV-VIS absorption and fluorescence spectra.It was found that the luminescence behavior of 1 containing naphthalene rings was completely different from that of 1'containing biphenyls.However,the steric hindrance caused by the introduction of L2 distorted the spatial extension direction of naphthalene ring groups in L1 of 2,induced π…π stacking and hydrogen bonding interactions,which not only enhanced the solid-state luminescence intensity,but also red-shifted the excitation and emission window.
关键词
炔膦金(Ⅰ)配合物/构-效关系/刚化结构/荧光Key words
Gold(Ⅰ)alkynyl phosphine complex/structure-activity/rigid structure/Luminescence引用本文复制引用
出版年
2025
NETL
NSTL
万方数据