title: Monomer emission and aggregate emission of an imidazolium macrocycle based on bridged tetraphenylethylene and their quenching by C60.
abstract: A novel imidazolium macrocycle based on bridged tetraphenylethylene (TPE) was synthesized. Because it bears the bridged TPE units, this macrocycle not only displays an aggregation-induced emission (AIE) effect but also exhibits monomer emission, which is very rare in AIE compounds. With aggregation of the macrocycle, the aggregate emission increases while the monomer emission decreases. It was found that this imidazolium macrocycle can form a stable 2:1 complex with C60, which gives rise to quenching of both the aggregate emission and the monomer emission. Unexpectedly, the aggregate emission exhibited a higher quenching efficiency than the monomer emission, probably because one adsorbed C60 molecule could affect more macrocycle molecules in the aggregate.
authors.affiliation: Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology , Wuhan 430074, China.
authors.forename: Jin-Hua
authors.initials: JH
authors.lastname: Wang
authors.forename: Hai-Tao
authors.initials: HT
authors.lastname: Feng
authors.forename: Jun
authors.initials: J
authors.lastname: Luo
authors.forename: Yan-Song
authors.initials: YS
authors.lastname: Zheng
mesh_terms: D005030:Ethylenes / Q000737:chemistry*; D037741:Fullerenes / Q000737:chemistry*; D007093:Imidazoles / Q000737:chemistry*; D047028:Macrocyclic Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D015394:Molecular Structure; D013730:Terphenyl Compounds / Q000737:chemistry*
chemical_list: D005030:Ethylenes; D037741:Fullerenes; D007093:Imidazoles; D047028:Macrocyclic Compounds; D013730:Terphenyl Compounds; C069837:fullerene C60