Aqueous Dispersion and Temperature Induced Reversible Fluorescence Properties of 1-Pyrenecarboxaldehyde

Ashaduzzaman, Md; Kunitake, Masashi

doi:10.18052/www.scipress.com/ILCPA.6.55

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Aqueous Dispersion and Temperature Induced Reversible Fluorescence Properties of 1-Pyrenecarboxaldehyde

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Abstract:

The fluorescence intensities for various vibronic fine structures in the 1-pyrenecarboxaldehyde (PyCHO) fluorescence show strong environment dependence. In aqueous solvent, the distribution of dye is highly depended on its concentration labels and varies from excimer to monomeric state. UV-Vis Spectroscopic analysis could not able to detect dye below 10^-7M concentration, whereas a new monomeric peak at 342 nm was observed after heating and cooling treatment at above the concentration. At 10^-8M concentration, only monomeric distribution of 1-PyCHO reveals a strong temperature (20-50 °C) induced reversible perturbation of the vibronic band intensities. This suggests the operation of some specific solute-solvent dipole-dipole interaction mechanism strongly influenced by heating.

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Periodical:

International Letters of Chemistry, Physics and Astronomy (Volume 6)

Pages:

55-62

DOI:

https://doi.org/10.18052/www.scipress.com/ILCPA.6.55

Citation:

M. Ashaduzzaman and M. Kunitake, "Aqueous Dispersion and Temperature Induced Reversible Fluorescence Properties of 1-Pyrenecarboxaldehyde", International Letters of Chemistry, Physics and Astronomy, Vol. 6, pp. 55-62, 2013

Online since:

January 2013

Authors:

Md Ashaduzzaman, Masashi Kunitake

Keywords:

1-Pyrenecarboxaldehyde, Monomeric Distribution, Reversible Fluorescence

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Creative Commons Attribution 4.0 International License

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