Replacing the non-polarized C=C bond with an isoelectronic polarized B-N unit for the design and development of smart materials

Neena, Kalluvettukuzhy K and Thilagar, Pakkirisamy (2016) Replacing the non-polarized C=C bond with an isoelectronic polarized B-N unit for the design and development of smart materials. In: JOURNAL OF MATERIALS CHEMISTRY C, 4 (48). pp. 11465-11473.

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Abstract

Replacing homodiatomic C=C in polyaryl systems with an isoelectronic heterodiatomic B-N unit is a powerful strategy for the rational design and construction of novel materials with versatile properties. Herein, we uncover for the first time the intriguing aggregation induced emission (AIE) properties of four tetra-arylaminoboranes (TAAB) 1-4 in which the C=C fragment of the tetra-arylethene molecule is replaced by the isoelectronic B-N unit. The dipole of these compounds was fine-tuned by judiciously employing amine donor(s) on the aryl groups attached to nitrogen. The optical properties are intriguing and are greatly influenced by the number of amine donor(s) on the B-N fragment. Compounds 1-4 are weakly emissive in dilute solutions, but are strongly emissive in the aggregated/condensed state. Compounds with strong amine donor(s) on the B-N fragment exhibit reversible mechanofluorochromism. The luminescent nano-aggregates of 1-4 were explored for the detection of nitroaromatic compounds. The experimental observations are supported by detailed computational studies.

Item Type:	Journal Article
Publication:	JOURNAL OF MATERIALS CHEMISTRY C
Additional Information:	Copy right for this article belongs to the ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	31 Jan 2017 05:33
Last Modified:	31 Jan 2017 05:33
URI:	http://eprints.iisc.ac.in/id/eprint/56167

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