1H NMR spectral evidence for a specific host-guest complexation induced charge localization in squaraine dyes

Ajayaghosh, Ayyappanpillai ; Arunkumar, Easwaran (2005) 1H NMR spectral evidence for a specific host-guest complexation induced charge localization in squaraine dyes Organic Letters, 7 (15). pp. 3135-3138. ISSN 1523-7060

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Official URL: http://pubs.acs.org/doi/abs/10.1021/ol050612u

Related URL: http://dx.doi.org/10.1021/ol050612u

Abstract

Experimental support is provided for the charge localization in squaraines, a class of fundamentally and technologically important organic dyes, by 1H NMR analysis through a host-guest complexation approach. Specific binding of Ca2+ ions to the squaraine 2 with a podand sidearm resulted in a charge-localized structure 2a with dramatic shifts and resolution of the proton signals when compared to those of 2.

Item Type:Article
Source:Copyright of this article belongs to American Chemical Society.
ID Code:422
Deposited On:21 Sep 2010 04:38
Last Modified:27 Sep 2010 10:20

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