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Minimal Modification Approach to Red-shifted Absorption and Fluorescence in 1,8-Naphthalimides by Premchendar Nandhikonda; Sangita Paudel; Michael D. Heagy is a Chemistry article available to read on EtoBox.

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As a minimum modification approach toward longer wavelength chromophores, a series of (4-diethylamino-1,8-naphthaloyl)-aminopyridines were prepared with the pyridine nitrogen located at the ortho, meta, and para positions. Comparison between these isomeric neutral dyes and their corresponding pyridinium-1,3-propanesulfonate salts reveals a red-shift in both absorption (up to an emission of 1682 cm À1 in ethyl acetate) and emission. These observed shifts along with increased fluorescence quantum yield are attributed to polarization induced by the quaternary nitrogen of the pyridinium cation.

Who reads Minimal Modification Approach to Red-shifted Absorption and Fluorescence in 1,8-Naphthalimides?

Author

Premchendar Nandhikonda; Sangita Paudel; Michael D. Heagy

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0040-4020)

Published

2009

Language

EN

Field

Chemistry (Physical Sciences)