Tunable multicolor emissions in a monocomponent gel system by varying the solvent, temperature and fluoride anion. Issue 47 (11th November 2016)

• Record Type: Journal Article
• Authors: Pang, Xuelei; Yu, Xudong; Xie, Dongyan; Li, Yajuan; Geng, Lijun; Ren, Jujie; Zhen, Xiaoli
• Is Part Of: Organic & biomolecular chemistry. Volume 14:Issue 47(2016)
• Page Start: 11176
• Page End: 11182
• Publication Date: 2016-11-11
• Subjects: Chemistry, Organic -- Periodicals; Bioorganic chemistry -- Periodicals; Chemistry, Physical organic -- Periodicals; 547
• DOI: 10.1039/c6ob02007k
• Languages: English
• ISSNs: 1477-0520

Abstract

Abstract : By introducing electron-donating and electron-accepting units into the organogelatorN1, multicolor emission could be facilely obtained by tuning the solvent, temperature and anion in a monocomponent organogel system. Abstract : The facile tuning of the fluorescent properties of organogels is highly desirable for optical switches, light-emitting diodes, chemosensors and bioprobes. The design of organic molecules with multiple emission colors but only one molecular platform remains challenging. Herein, a new cholesterol-based organogelatorN1 containing D–A pairs (salicylaldehyde and naphthalimide units) was designed. We successfully obtained multiple solvent-tuned emission colors in both the solution and gel states using a unimolecular platform. Moreover, the effects of the solvent on the gel morphology, rheology and anion-responsive properties were studied. Finally, we showed that the gel in benzene displayed reversible thermochromic properties with changes in emission color from yellow-green to red. Several experiments suggested that a short-distance and ordered array of the D–A pairs facilitated the efficient intermolecular electron transfer of the fluorophores.