Photochemical study of energy transfer from benzophenone triplet to aniline

Santhanam, M.; Ramakrishnan, V. T.

doi:10.1039/c29700000344

Cited by 7 publications

(3 citation statements)

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“…These processes may pass through different intermediates among which the radical cation of aniline (PhNH 2 +• ) is possible [8–14, 52–57]. Oxidation of aniline by oxygen from air, catalyzed by sunlight or UV light, is also a very complex process [13, 60–62]. It may occur even in a closed bottle of aniline when colored products appear.…”

Section: Relative Stabilitiesmentioning

confidence: 99%

Consequence of one-electron oxidation and one-electron reduction for aniline

2011

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Quantum-chemical calculations were performed for all possible isomers of neutral aniline and its redox forms, and intramolecular proton-transfer (prototropy) accompanied by π-electron delocalization was analyzed. One-electron oxidation (PhNH2 – e → [PhNH2]+•) has no important effect on tautomeric preferences. The enamine tautomer is preferred for oxidized aniline similarly as for the neutral molecule. Dramatical changes take place when proceeding from neutral to reduced aniline. One-electron reduction (PhNH2 + e → [PhNH2]-•) favors the imine tautomer. Independently on the state of oxidation, π- and n-electrons are more delocalized for the enamine than imine tautomers. The change of the tautomeric preferences for reduced aniline may partially explain the origin of the CH tautomers for reduced nucleobases (cytosine, adenine, and guanine).

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Section: Relative Stabilitiesmentioning

confidence: 99%

Consequence of one-electron oxidation and one-electron reduction for aniline

2011

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“…V 2 O 5 (E g = 2.8 eV) [3] is susceptible to photoactivation with visible light of wavelength less than 443 nm and here we report solar photocatalysis by V 2 O 5 ; reports on solar photocatalysis are few and preliminary [4][5][6]. An air-equilibrated solution of aniline yields azobenzene on irradiation at 365 nm with benzophenone sensitizing the oxidation [7][8][9]. Aniline is oxidized to azobenzene on ZnO with UV light [10][11][12] and photomineralized on TiO 2 [13].…”

Section: Introductionmentioning

confidence: 92%

Vanadia-catalyzed solar photooxidation of aniline

Karunakaran

Senthilvelan

2005

Journal of Colloid and Interface Science

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“…In the photoreduction of carbonyl compounds, hydrogen abstraction from iso-propanol solvent enables reduction of the carbonyl group to occur. It is also possible to use aliphatic and aromatic amines in this role (36)(37)(38). The suggested mechanism for the reaction proposes that a chargetransferred species is formed from the excited carbonyl molecule and the amine, followed by hydrogen abstraction from the amine.…”

Section: Photochemistry Of Nitrogen-containing Compoundsmentioning

confidence: 99%