Synthesis and photochromic properties of imidazole-based diarylethenes.
A series of symmetrical imidazole- and N-methylated imidazole-based diarylethenes were synthesized, and the structures have been well characterized by NMR spectroscopy and mass spectrometry. Their photochromism were investigated upon UV/vis light irradiation in DMF solution. A significant red-shift of UV absorption was observed after irradiation with UV light when substituents on the benzene ring (such as methoxyl group) were introduced. But N-methylation on the two imidazole rings will result in a blue-shift of UV absorption. The photophysical properties can be adjusted by changing the substituents, which provides a new strategy for the design of diarylethenes with excellent properties.
College of Chemistry, Central China Normal University, Wuhan, HuBei, 430079, China.
Jingjing
J
Yuan
Ziyong
Z
Li
Ming
M
Hu
Sisi
S
Li
Shuyuan
S
Huang
Jun
J
Yin
Sheng Hua
SH
Liu
D003500:Cyclization; D005030:Ethylenes / Q000138:chemical synthesis / Q000737:chemistry* / Q000528:radiation effects; D007093:Imidazoles / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D008745:Methylation; D013056:Spectrophotometry, Ultraviolet; D014466:Ultraviolet Rays
D005030:Ethylenes; D007093:Imidazoles; C029899:imidazole