D
Donald Mason
Researcher at University of Central Lancashire
Publications - 16
Citations - 97
Donald Mason is an academic researcher from University of Central Lancashire. The author has contributed to research in topics: Reaction rate constant & Pyrrolidine. The author has an hindex of 7, co-authored 16 publications receiving 92 citations.
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Journal ArticleDOI
The effects of cyclic terminal groups on the electronic absorption spectra of di- and tri-phenylmethane dyes
Steven F. Beach,John D. Hepworth,Peter G. Jones,Donald Mason,John Sawyer,Geoffrey Hallas,Meta M. Mitchell +6 more
TL;DR: The spectral shifts of the first absorption bands brought about by cyclic terminal groups in analogues of Michler's Hydrol Blue, Malachite Green, and Crystal Violet are determined mainly by inductive effects as mentioned in this paper.
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The effects of cyclic terminal groups in di- and tri-arylmethane dyes. Part 3. Consequences of unsymmetrical substitution in Malachite Green
TL;DR: In this paper, a comprehensive series of unsymmetrical Malachite green dyes containing different amino substituents has been prepared and the electronic absorption spectra have been determined.
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The effects of cyclic terminal groups in 4-aminoazobenzene and related azo dyes. Part 1. Electronic absorption spectra of some monoazo dyes derived from N-phenylpyrrolidine and N-phenylpiperidine
TL;DR: In this article, the conjugative capacity of the lone pair of electrons on the terminal nitrogen atom brought about by a change in size of the saturated heterocyclic ring was investigated.
Journal ArticleDOI
Steric and Electronic Effects in Basic Dyes VI — Electronic Absorption Spectra of Derivatives of Brilliant Green Containing Substituents in the Phenyl Ring
TL;DR: In this paper, a comprehensive series of mono-and di-substituted derivatives of Brilliant Green has been prepared and the various electronic absorption spectra have been determined, showing that substitution in the 2-position leads to a pronounced increase in the intensity of the long-wavelength band.
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The effects of cyclic terminal groups in 4-aminoazobenzene and related azo dyes. Part 3. Electronic absorption spectra of some monoazo dyes derived from N-phenylmorpholine, N-(phenyl)thiomorpholine, N-(phenyl)thiomorpholine 1,1-dioxide, and N-acetyl-N′-phenylpiperazine
TL;DR: In this paper, it was shown that monoazo dyes containing a terminal morpholino group absorb hypsochromically in comparision with their piperidino counterparts as a result of electron withdrawal by the oxygen atom.