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Synthesis and photophysical properties of a novel pyridinium salt based on dipicolinate

Paper ID Volume ID Publish Year Pages File Format Full-Text
26421 43951 2014 5 PDF Available
Title
Synthesis and photophysical properties of a novel pyridinium salt based on dipicolinate
Abstract

•A novel methyl pyridinium salt based on dipicolinate was synthesized.•The molecule exhibits pronounced negative solvatochromism.•High spectral sensitivities to water content changes in solvents were observed.•The molecule possesses high absorption spectral sensitivities to pH variations.•Enhanced two-photon absorption activity was obtained.

A novel pyridinium salt based on dipicolinate, PM-1 was synthesized from the corresponding neutral chromophore and enhanced two-photon absorption activity was obtained. The two-photon absorption cross section value is 6.8 × 102 GM. PM-1 exhibits pronounced negative solvatochromism and possesses high absorption spectral sensitivities to pH and water content changes. PM-1 could be used as pH probe and to measure the water content, particularly for less than 10%, in common water miscible organic solvents such as THF, 1,4-dioxane, acetone and methanol.

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Keywords
Two-photon absorption; pH probe; Water probe; Solvatochromism; Pyridinium salt; Dipicolinate
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Synthesis and photophysical properties of a novel pyridinium salt based on dipicolinate
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 273, 15 January 2014, Pages 29–33
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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