Jump to main content
Jump to site search

Issue 20, 2014
Previous Article Next Article

Phenothiazine-based benzoxazole derivates exhibiting mechanochromic luminescence: the effect of a bromine atom

Author affiliations

Abstract

Two phenothiazine-based benzoxazole derivates (PVB and BPVB) were designed and synthesized, and their photophysical properties were studied and compared. The results showed that both compounds emitted strong fluorescence in solution and in the solid state. Their emission wavelengths were also strongly affected by solvent polarity, indicating intramolecular charge transfer (ICT) transitions. Interestingly, the two compounds exhibited different mechanochromism. The ground film of PVB without bromine atoms can self-cure and change into the original film within 15 min at room temperature. The fluorescence of the ground film for BPVB showed no changes for at least 2 weeks. Meanwhile, a higher contrast fluorescence change was observed for the solid film of BPVB with bromine atoms under grinding, although PVB and BPVB exhibited similar spectral red shifts after grinding. Based on the spectral results and single-crystal structures, a mechanochromic mechanism is given.

Graphical abstract: Phenothiazine-based benzoxazole derivates exhibiting mechanochromic luminescence: the effect of a bromine atom

Back to tab navigation

Supplementary files

Publication details

The article was received on 11 Jan 2014, accepted on 16 Feb 2014 and first published on 21 Feb 2014


Article type: Paper
DOI: 10.1039/C4TC00061G
Author version
available:
Download author version (PDF)
J. Mater. Chem. C, 2014,2, 3942-3950

  •   Request permissions

    Phenothiazine-based benzoxazole derivates exhibiting mechanochromic luminescence: the effect of a bromine atom

    P. Xue, B. Yao, J. Sun, Q. Xu, P. Chen, Z. Zhang and R. Lu, J. Mater. Chem. C, 2014, 2, 3942
    DOI: 10.1039/C4TC00061G

Search articles by author

Spotlight

Advertisements