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Selective photodissociation of highly photoactive Bis-2-benzylidenemalononitrile in solution

Panja, Sumit Kumar and Koley, Suvajit and Boumediene, Haddad (2019) Selective photodissociation of highly photoactive Bis-2-benzylidenemalononitrile in solution. In: JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 375 . pp. 18-23.

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Official URL: https://dx.doi.org/10.1016/j.jphotochem.2019.01.03...

Abstract

Photophysical study of highly photoactive bis(-2)-benzylidenemalononitrile (BBM) has been investigated in solution using UV-vis, fluorescence and NMR spectroscopic techniques. The seletive photodissociation can be attributed to the presence of highly polarized C=C bond, attached to dicyno groups (CN). Nevertheless, the observed photodissociation of BBM is highly solvent specific and temperature sensitive. The product A (2-(4-formylbenzylidene)malononitrile), formed by the selective photodissociation of BBM under UV irradiation has been isolated and identified by NMR studies. The photodissociation followed the pseudo 1st order kinetics with a rate constant (k) 10(-3).10(-4).s(-1). Moreover the mechanistic study of selective photodissociation of bis(-2)-benzylidenemalononitrile (BBM) has been investigated and found to follow the dipolar mechanism path during photochemical reaction.

Item Type: Journal Article
Additional Information: The copyright for this article belongs to Elsevier B.V.
Keywords: Photodissociation; Photoactive material; Dipolar mechanism; Benzylidene malononitrile analogue; Density functional theory (DFT)
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Depositing User: Ms Ranganayaki RS
Date Deposited: 30 Apr 2019 04:36
Last Modified: 30 Apr 2019 04:36
URI: http://eprints.iisc.ac.in/id/eprint/62561

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