Multiple analyte response and molecular logic operations by excited-state charge-transfer modulation in a bipyridine integrated fluorophore

Sreejith, Sivaramapanicker ; Divya, Kizhumuri P. ; Manojkumar, T. K. ; Ajayaghosh, Ayyappanpillai (2011) Multiple analyte response and molecular logic operations by excited-state charge-transfer modulation in a bipyridine integrated fluorophore Chemistry - An Asian Journal, 6 (2). pp. 430-437. ISSN 1861-4728

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/asia.20...

Related URL: http://dx.doi.org/10.1002/asia.201000637

Abstract

The tunable excited-state properties of a new donor–π-acceptor–π-donor-type fluorophore 1 with a bipyridyl moiety and its ability to respond to different analytes in solution and on paper microchannels are described. Furthermore, the multiple analyte response of fluorophore 1 has been exploited to perform multiple logic operations. Molecule 1, by virtue of its excited-state charge transfer, exhibits solvatochromism and reversible modulation of its emission in response to multiple chemical inputs, thus resulting in different fluorescent signals. The intraligand charge-transfer (ILCT) emission of 1 at 574 nm has been modulated to three emission outputs by using different chemical inputs, such as Zn2+, H+, and ethylenediaminetetraacetic acid (EDTA). Thus, different logic operations such as AND, 2-input-INH, 3-input-INH, IMP, and a combination of these logic operations could be achieved.

Item Type:Article
Source:Copyright of this article belongs to John Wiley and Sons.
Keywords:Cations; Charge Transfer; Fluorescence; Molecular Logic; Solvatochromism
ID Code:96146
Deposited On:05 Dec 2012 09:24
Last Modified:05 Dec 2012 09:24

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