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.

	PDF J_Photochem_Photobiol_A_Chem_375_18-23_2019.pdf - Published Version Restricted to Registered users only Download (1MB)
	Microsoft Word 1-s2.0-S1010603018316836-mmc1.docx - Published Supplemental Material Download (2MB)

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
Publication:	JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
Publisher:	ELSEVIER SCIENCE SA
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
Date Deposited:	30 Apr 2019 04:36
Last Modified:	30 Apr 2019 04:36
URI:	http://eprints.iisc.ac.in/id/eprint/62561

Available Versions of this Item

• Selective photodissociation of highly photoactive Bis-2-benzylidenemalononitrile in solution. (deposited 30 Apr 2019 04:36) [Currently Displayed]

Actions (login required)

View Item