title: Exploration of Energy Modulations in Novel RhB-TPE-Based Bichromophoric Materials via Interactions of Cu(2+) Ion under Various Semiaqueous and Micellar Conditions.
abstract: Novel bichromophoric materials TR-A and TR-B consisting of an entirely new combination of TPE and RhB units were developed to explore the optimum conditions of energy modulations via pH variation and Cu(2+) interaction at various water contents of CH3CN. Interestingly, TR-A and TR-B, at 60 and 70% water contents, respectively, favored the optimum Cu(2+)-mediated energy modulations from TPE to RhB and thus achieve the brightest orange emissions of free RhB with complete disappearance of aggregation-induced emission (AIE) from TPE. Furthermore, various micellar conditions of triton-X-100, SDS, and CTAB were employed to adjust energy modulations of TR-A and TR-B at high water contents (at 80 and 90%, respectively). The incorporation of RhB into triton-X-100 micellar cavities disrupted AIE from TPE; thus, none of the energy modulations from TPE to RhB occurred even in the presence of Cu(2+) ion. Interestingly, the micellar conditions of anionic surfactant (SDS) favored the increased local concentration of Cu(2+) ions in the vicinity of scavangable RhB and facilitated the generation of noncyclic free RhB in situ via bright-orange emissions.
authors.affiliation: Department of Materials Science & Engineering, National Chiao Tung University , Hsinchu, Taiwan.
authors.forename: Ravinder
authors.initials: R
authors.lastname: Singh
authors.affiliation: Department of Materials Science & Engineering, National Chiao Tung University , Hsinchu, Taiwan.
authors.forename: Atul Kumar
authors.initials: AK
authors.lastname: Dwivedi
authors.affiliation: Department of Materials Science & Engineering, National Chiao Tung University , Hsinchu, Taiwan.
authors.forename: Ashutosh
authors.initials: A
authors.lastname: Singh
authors.affiliation: Department of Materials Science & Engineering, National Chiao Tung University , Hsinchu, Taiwan.
authors.forename: Chien-Min
authors.initials: CM
authors.lastname: Lin
authors.affiliation: Department of Materials Science & Engineering, National Chiao Tung University , Hsinchu, Taiwan.
authors.forename: Reguram
authors.initials: R
authors.lastname: Arumugaperumal
authors.affiliation: Department of Materials Science & Engineering, National Chiao Tung University , Hsinchu, Taiwan.
authors.forename: Kung-Hwa
authors.initials: KH
authors.lastname: Wei
authors.affiliation: Department of Materials Science & Engineering, National Chiao Tung University , Hsinchu, Taiwan.
authors.forename: Hong-Cheu
authors.initials: HC
authors.lastname: Lin
keywords: Förster resonance energy transfer; bichromophore; chemodosimeter; photoinduced electron transfer; rhodamine B; surfactant; tetraphenylethene