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Abstract

Electronic and FT-IR Spectral Investigations of the Charge-Transfer Interactions Between Three Symmetrically Substituted Triazine-Stilbene Derivatives With Some -Acceptors. Part Three : TCNQ

Author(s): Moamen S. Refat, Lamia A. Ismail and Abdel Majid A. Adam

Fluorescent brighteners (FBs) are primarily applied to textiles to enhance their whiteness and brightness and they also significantly increase the UV-blocking properties of the medium to which they are applied. In order to improve the chemical and physical properties of fluorescent brighteners, the chargetransfer (CT) complexes of three triazine-stilbene derivatives (TS) with 7,7',8,8'-tetracyanoquinodimethane (TCNQ) were synthesized and spectroscopically investigated. The obtained complexes with the general formula [(TS)(acceptor)2] with a 2 : 1 acceptor: donor molar ratio. Elemental analysis (CHN), electronic spectra, photometric titration and mid infrared spectra were used to predict the position of the CT interaction between the donating and accepting sites.


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