Assembly of strongly phosphorescent hetero-bimetallic and -trimetallic [2]catenane structures based on a coinage metal alkynyl system. Issue 11 (4th October 2017)

• Record Type: Journal Article
• Authors: Chang, Xiao-Yong; Xu, Guang-Tao; Cao, Bei; Wang, Juan-Yu; Huang, Jie-Sheng; Che, Chi-Ming
• Is Part Of: Chemical science. Volume 8:Issue 11(2017)
• Page Start: 7815
• Page End: 7820
• Publication Date: 2017-10-04
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c7sc03529b
• Languages: English
• ISSNs: 2041-6520

Abstract

Abstract : Strongly phosphorescent hetero-metallic [2]catenanes, including bimetallic (RCC)12 Au6 M6 (M = Ag or Cu), (RCC)12 Au10 Ag2 and trimetallic (RCC)12 Au6 Cu n Ag6− n, were obtained. Abstract : Homo-metallic metal alkynyl complexes exhibit interesting catenane structures, but their hetero-metallic catenane counterparts are under-developed. In this work, we report rare examples of bimetallic Au–Cu (DtbpCC − ligand; Dtbp = 3, 5-di- tert -butylphenyl), Au–Ag ( t BuCC − ligand), and Au–Cu, Au–Ag (C6-FluoCC − ligand; C6-Fluo = 9, 9-dihexyl-9 H -fluoren-2-yl) complexes as well as a trimetallic Au–Ag–Cu (C6-FluoCC − ligand) complex, which feature [2]catenane structures. The formation of the [2]catenane structure is significantly affected by the coinage metal ion(s) and change of the structure of the alkynyl ligand. These hetero-metallic [2]catenane structures are strongly luminescent with tunable emission λ max from 503 to 595 nm and Φ values up to 0.83.