Bile acid derived PET-based cation sensors: molecular structure dependence of their sensitivity

Maitra, Uday ; Nath, Suvadeep (2009) Bile acid derived PET-based cation sensors: molecular structure dependence of their sensitivity Chemistry-An Asian Journal, 4 (6). pp. 989-997. 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.200900026

Abstract

A general strategy of designing a PET cation sensor using Bile acids as scaffolds has been discussed. Keeping the basic molecular structure the same, different bile acid based fluoroionophores were prepared in order to achieve the highest sensitivity toward the metal ions. The dependence of sensitivity on the molecular structure has been studied. A number of bile acid derived photoinduced electron transfer (PET) based sensors for metal ions are prepared. A general strategy for designing the sensor with a modular nature allows for making different molecules capable of sensing different metal ions by a change in the fluorophore and receptor unit. Keeping the basic molecular structure the same, different bile acid based fluoroionophores were prepared in order to achieve the highest sensitivity toward the metal ions. The sensors showed similar binding constants for the same metal ion, but the degree of fluorescence enhancement upon addition of the metal salts were different. The sensitivities of the sensors towards a certain metal were determined from the observed fluorescence enhancement upon addition of the metal salt.

Item Type:Article
Source:Copyright of this article belongs to Wiley-VCH Verlag GmbH.
Keywords:Cations; Electron Transfer; Fluorescence; Photophysics; Sensors
ID Code:21274
Deposited On:20 Nov 2010 13:12
Last Modified:20 Nov 2010 13:12

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