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Mechanochromism, thermochromism, protonation effect and discrimination of CHCl3 from organic solvents in a Et2N-substituted Salicylaldehyde Schiff base.
- Source :
-
Dyes & Pigments . Nov2021, Vol. 195, pN.PAG-N.PAG. 1p. - Publication Year :
- 2021
-
Abstract
- Multi-stimuli-responsive materials, which can show color/fluorescence change in response to external chemical or physical stimuli, have received increasing attention due to the capacities for facile realization of multifunctional sensing. Herein, we presented a Et 2 N-substituted salicylaldehyde Schiff base compound (DDHAC) with multi-stimuli-responsive behaviors. An investigation of the photophysical properties in solution demonstrated DDHAC was an excited-state intramolecular proton transfer (ESIPT) and aggregation-induced emission (AIE) active molecule. Owing to structural flexibility from salicylaldehyde Schiff base, the compound displayed reversible mechanochromic and thermochromic behavior, which were associated with the crystalline-to-amorphous and crystalline-to-crystalline, respectively. Moreover, the Et 2 N group endowed DDHAC with the capability that response of protonation. Due to its protonation effect, DDHAC could serve as a unique optical probe for discriminating CHCl 3 from organic solvents assisted by UV irradiation. The selectivity was attributed to the interaction of DPPTP with HCl gas from photodecomposition product of chloroform. [Display omitted] • A multi-stimuli-responsive compound DDHAC based on Et 2 N-substituted salicylaldehyde Schiff base was developed. • DDHAC showed mechanochromism, thermochromism and acdichromism behaviors. • DDHAC could serve as a unique optical probe for discrimination CHCl 3 from organic solvents assisted by UV irradiation. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SCHIFF bases
*PROTON transfer reactions
*ORGANIC solvents
*THERMOCHROMISM
Subjects
Details
- Language :
- English
- ISSN :
- 01437208
- Volume :
- 195
- Database :
- Academic Search Index
- Journal :
- Dyes & Pigments
- Publication Type :
- Academic Journal
- Accession number :
- 152272567
- Full Text :
- https://doi.org/10.1016/j.dyepig.2021.109708