Journal
LUMINESCENCE
Volume 36, Issue 3, Pages 684-690Publisher
WILEY
DOI: 10.1002/bio.3989
Keywords
diarylimidazole; multistimuli responsive; optical properties; pH response; photochromism
Categories
Funding
- National Key Research And Development Program of China [2017YFB0307202]
- National Natural Science Foundation of China [21602106]
Ask authors/readers for more resources
The newly synthesized bis-photochromic molecules display significant pH response characteristics and potential for use as pH probes in acetonitrile solutions and PMMA membranes. Under ultraviolet light, these compounds exhibit photochromism and 'turn-off' fluorescence properties, possibly due to photoisomerization of the 4,5-diarylimidazole units.
Three new bis-photochromic molecules containing two 4,5-diarylimidazole units were synthesized and characterized. We investigated their photophysical properties and pH response characteristics in acetonitrile solutions and polymethylmethacrylate (PMMA) membranes. All compounds displayed significant pH responses for the imidazole ring in the molecular structure, which could be potentially used as pH probes. Under ultraviolet light, these compounds show photochromism and 'turn-off' fluorescence properties either in solution or in PMMA film. The mechanism of this phenomenon may be due to photoisomerization, that is the conversion of the 4,5-diarylimidazole units open-ring form to the closed-ring form. Moreover, such systems as logic gates, high density (3D) data storage systems and optical equivalents of field-effect transistors are considered necessary for optical computing.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available