A comprehensive investigation of the interrelationships between spectroscopy and photochemistry and substituents of some azulenic derivatives.

A comprehensive investigation of the interrelationships between spectroscopy and photochemistry and substituents of some azulenic derivatives. Research Abstract Details 

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A comprehensive investigation of the interrelationships between spectroscopy and photochemistry and substituents of some azulenic derivatives. Abstract Text:

Hongru Li,Fang Gao,Alfred E Asato,Robert S H Liu,

Several azulenic dyes, including six azulene hydrocarbons, two azulene aldehydes, and two olefinic azulenes, have been synthesized to survey their photophysics and photochemistry. These azulenes display S(2)-->S(0) emission, but with several differences. This is the most remarkable characteristic of the effect of orbital control on color and excited state properties of the azulenic compounds. This paper emphasizes how emission spectra and photochemistry of azulenic compounds are influenced by their chemical structure and solvent. The emission spectra of the azulene hydrocarbons suggest that their excited state properties can be controlled by their molecular structure and size. It was confirmed by emission and (1)H NMR spectroscopy that azulene monoaldehyde is protonated in a strong acid, such as trifluoroacetic acid (TFA). Photochemistry of styrylazulenes was observed during irradiation. Azulenic compounds are thermally stable and color tunable, and hence they are good candidates as non-linear optical materials. Based on their unique photochemical and photophysical characteristics, novel azulenic dyes can be constructed for different uses.

A comprehensive investigation of the interrelationships between spectroscopy and photochemistry and substituents of some azulenic derivatives. Publishing Authors By Initials

H Li,F Gao,AE Asato,RS Liu,

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A comprehensive investigation of the interrelationships between spectroscopy and photochemistry and substituents of some azulenic derivatives. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Spectrochimica acta. Part A, Molecular and biomole

VOLUME: 69

Page Numbers: 272-7

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ISSN: 1386-1425

DAY: 31

MONTH: 03

YEAR: 2007

A comprehensive investigation of the interrelationships between spectroscopy and photochemistry and substituents of some azulenic derivatives. Information

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LANGUAGE: eng

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Grant and Affiliation Information for A comprehensive investigation of the interrelationships between spectroscopy and photochemistry and substituents of some azulenic derivatives.

AFFILIATION: College of Chemistry and Chemical Engineering, Chongqing University, Sha-Zheng Street 174, Sha-Ping-Ba District, Chongqing 40044, China; Department of Chemistry, University of Hawaii, 2545 The Mall, Honolulu, HI 96822, USA.

Country: England

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MEDLINETA: Spectrochim Acta A Mol Biomol

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