| Universal Correlation Between Solvent Polarity, Fluorescence Lifetime and Macroscopic Viscosity of Alcohol Solutions. | |
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MedLine Citation:
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PMID: 22234458 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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In this report, we show interesting correlation between solvent polarity of alcohol solutions and fluorescence lifetime (τ(av)), estimated from time-resolved fluorescence spectroscopy (TRFS), and macroscopic viscosity (η). Non-functionalized carbon nanoparticles (NCNP) were successfully used as flurophores in these measurements. The solvent polarity, described through polarizability (Δf) of dielectric continuum theory, could universally describe both τ(av)/τ(max) and η/η(max) through the relation, [Formula: see text] with X = τ(av)/τ(max) or η/η(max), (subscript OH represents corresponding values for alcohols) for alcohol solutions of methanol, ethanol and 1-propanol at room temperature. We show that fluorescence lifetime and solvent viscosity are universal functions of solvent polarity for alcohol solutions. |
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Authors:
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Pradip Kumar; H B Bohidar |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-1-12 |
Journal Detail:
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Title: Journal of fluorescence Volume: - ISSN: 1573-4994 ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-1-11 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9201341 Medline TA: J Fluoresc Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Nanomaterials and Nanocomposites Laboratory, School of Physical Sciences, Jawaharlal Nehru University, New Delhi, 110067, India. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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