Premium
Synthesis, Characterization, and Fluorescence Studies of Novel Heterocyclic Azo Dyes Derived from Benzothiazole
Author(s) -
Şener Nesrin,
Erişkin Selinay,
Şahin Çiğdem,
Yılmaz Mehmet,
Şener İzzet
Publication year - 2017
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.2974
Subject(s) - benzothiazole , chemistry , solvatochromism , fluorescence , photochemistry , amine gas treating , proton nmr , substituent , absorption (acoustics) , organic chemistry , molecule , physics , quantum mechanics , acoustics
Ten novel fluorescent azo disperse dyes 2a – e (open forms) and 3a – e (closed forms) were obtained by the coupling reaction of carbocyclic amine based diazonium chloride with compounds 2 and 3 . The synthesized dyes were characterized by elemental analysis, high‐resolution mass spectrometry, Fourier transform infrared, and NMR spectral techniques. Moreover, we investigated the substituent effect and solvatochromic properties of the dyes on absorption and fluorescence spectra. At the same time, the absorption and emission spectral data of the closed form dyes 3a – e were compared with the open form dyes 2a – e due to more planarity of the closed form dyes that lead to the extension of the π–electron conjugation.