Optical spectroscopy of molecular-rotor molecules adsorbed on cellulose

Ron Simkovitch; Dan Huppert

doi:10.1021/jp507052m

Optical spectroscopy of molecular-rotor molecules adsorbed on cellulose

Ron Simkovitch, Dan Huppert^*

^*Corresponding author for this work

School of Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

Steady-state and time-resolved emission techniques were used to study the fluorescence properties of two molecular rotors, thioflavin-T and auramine-O adsorbed on cellulose powder. Molecular rotors are known for their weak fluorescence intensity and short fluorescence lifetime when dissolved in liquids of low viscosity. We found that these molecular-rotor molecules when adsorbed on cellulose exhibit a rather strong steady-state fluorescence spectrum as well as long emission lifetime. We explain these results by the inhibition of segmental intramolecular rotation when these molecules are adsorbed on cellulose.

Original language	English
Pages (from-to)	8737-8744
Number of pages	8
Journal	Journal of Physical Chemistry A
Volume	118
Issue number	38
DOIs	https://doi.org/10.1021/jp507052m
State	Published - 25 Sep 2014

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abstract = "Steady-state and time-resolved emission techniques were used to study the fluorescence properties of two molecular rotors, thioflavin-T and auramine-O adsorbed on cellulose powder. Molecular rotors are known for their weak fluorescence intensity and short fluorescence lifetime when dissolved in liquids of low viscosity. We found that these molecular-rotor molecules when adsorbed on cellulose exhibit a rather strong steady-state fluorescence spectrum as well as long emission lifetime. We explain these results by the inhibition of segmental intramolecular rotation when these molecules are adsorbed on cellulose.",

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AB - Steady-state and time-resolved emission techniques were used to study the fluorescence properties of two molecular rotors, thioflavin-T and auramine-O adsorbed on cellulose powder. Molecular rotors are known for their weak fluorescence intensity and short fluorescence lifetime when dissolved in liquids of low viscosity. We found that these molecular-rotor molecules when adsorbed on cellulose exhibit a rather strong steady-state fluorescence spectrum as well as long emission lifetime. We explain these results by the inhibition of segmental intramolecular rotation when these molecules are adsorbed on cellulose.

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JO - Journal of Physical Chemistry A

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Optical spectroscopy of molecular-rotor molecules adsorbed on cellulose

Abstract

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