Tuning of the photophysical and electrochemical properties of symmetric and asymmetric conjugated thiophenoazomethines. Issue 23 (3rd April 2018)

• Record Type: Journal Article
• Authors: Liu, Shengzhen; Wu, Ti; Zhu, Qi; Pu, Jialing; Chen, Guangxue; Zhang, Weimin; Li, Zhongxiao
• Is Part Of: RSC advances. Volume 8:Issue 23(2018)
• Page Start: 12779
• Page End: 12784
• Publication Date: 2018-04-03
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c8ra00570b
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A synthetic route towards symmetric and asymmetric thiophenoazomethines was accomplished by reaction of the readily available amine with various aldehydes. Abstract : A synthetic route towards symmetric and asymmetric thiophenoazomethines was accomplished by reaction of the readily available amine with various aldehydes. Investigation of a series of thiophenoazomethines obtained by this method indicates that the terminal groups and the degree of conjugation have a great effect on the electronic absorption and energy levels of the conjugated compounds, particularly the effect of terminal groups. The terminal withdrawing and donating groups of thiophenoazomethines led to the formation of an electronic push–pull, push–push and pull–pull system, which can perturb the electronic transitions between the ground and excited states. The flexible chain substituents on the thiophene units, which improve its solubility, also result in bathochromic absorption, but have limited effect on the energy level.