Mkpenie, Victor N. and Essien, Emmanuel E. (2015) Solvent and Methyl Group Effects on the Electronic Spectral Properties of Azo-2-Naphthol Dye. American Chemical Science Journal, 8 (1). pp. 1-8. ISSN 22490205
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Abstract
The influence of solvent polarity on the absorption pattern of azo-2-naphthol dyes,1-(4-methylphenylazo)-2-naphthol (MPAN) and 1-phenylazo-2-naphthol (PAN) have been studied using a UV-Visible spectrophotometer in polar and non-polar solvents. Analysis of the spectral data obtained revealed two types of effects - the polar effect (tPE) and the non-polar effect (tNPE) - exhibited when polar and non-polar solvents are used respectively. These effects can affect differently, the direction of shift in the wavelength (λmax) of electronic absorption of azo-2-naphthol dyes bathochromically or hypsochromically. Linear solvation energy relationships (LSER) have been used to quantify the interactions between solvents and dyes. The overall solute-solvent interaction had contributions from polarizability/dipolarity, hydrogen bond donor (HBD) and hydrogen bond acceptor (HBA) abilities.
Item Type: | Article |
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Subjects: | Open Library Press > Chemical Science |
Depositing User: | Unnamed user with email support@openlibrarypress.com |
Date Deposited: | 14 Jul 2023 11:12 |
Last Modified: | 28 May 2024 05:19 |
URI: | http://info.euro-archives.com/id/eprint/1552 |