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- W2379393662 abstract "Starting from 4-nitroaniline,the key intermediate 3,5-dibromoaniline was obtained by sequential reactions of bromination,diazotization deamination and nitro-reduction.Then 3,5-dibromoaniline and 3-bromoaniline were reacted with phenol derivatives to give 10 novel D-π-A azobenzene derivatives via azo coupling respectively.The structures of the target compounds were confirmed by NMR,ESI-MS,elemental analysis and X-ray single crystal diffraction.The photochromic property was characterized by UV-Vis spectroscopy,and the reversible cis-trans isomerization speed constants were tested.The results indicate that the target compounds displayed sensitive photochromic response.The isomerization speeds constants ranged from 10-2 to 10-3 s-1.The isomerization speeds mainly depended on molecular steric hindrance." @default.
- W2379393662 created "2016-06-24" @default.
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- W2379393662 date "2015-01-01" @default.
- W2379393662 modified "2023-09-23" @default.
- W2379393662 title "Synthesis,characterization and photochromic properties of D-π-A azobenzene derivatives" @default.
- W2379393662 hasPublicationYear "2015" @default.
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