Metal-organic supramolecular nanoarchitectures by Ru(II) bis-(terpyridine)-bridged pillar[5]arene dimers with triphenylamine

• Published in: Chinese chemical letters 2021-01, Vol.32 (1), p.357-361
• Main Authors: Cui, Tianwei, Liu, Guoxing, Zhang, Wenjing, Zhu, Xinju, Leng, Juhua, Hao, Xin-Qi, Mao, Pu, Song, Mao-Ping
• Format: Article
• Language: English
• Subjects: Host-guest complexation; Pillararene; Self-assemble; Supramolecular chemistry; Tunable PET
• ISSN: 1001-8417; 1878-5964
• DOI: 10.1016/j.cclet.2020.02.024

A metal-organic supramolecular nanoassembly comprised of bis(terpyridine)-bridged pillar[5]arene dimers and triphenylamine achieved tunable photoinduced electron transfer through solvent conversion and competitive guests. [Display omitted] A metal-organic photoinduced electron transfer (PET) supramolecular nanoarchitecture comprised of Ru(II) bis(terpyridine)-modified pillar[5]arene (electron acceptor) and triazole triphenylamine amyl cyanide (electron donor) has been designed and constructed. Through the comparison of diverse solvents and acceptors, the two conditions, i.e., modification of pillar[5]arene to donor and weak polar solvent are benefit for the occurrence of “efficient PET” because of shorter D-A distance in the presence of pillar[5]arene. Crucially, the fluorescence and PET process of the supramolecular assembly could be further modulated by solvent conversion and another competitive guest. The study provides a supramolecular method to design and construct tunable PET systems and PET-based smart materials.