Document Detail


Universal Correlation Between Solvent Polarity, Fluorescence Lifetime and Macroscopic Viscosity of Alcohol Solutions.
MedLine Citation:
PMID:  22234458     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
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.
Authors:
Pradip Kumar; H B Bohidar
Related Documents :
1202128 - The effect of hypophysectomy and prolactin therapy on water balance of the brown trout ...
21825448 - On the transition from boundary lubrication to hydrodynamic lubrication in soft contacts.
25181008 - External co2 and water supplies for enhancing electrical power generation of air-cathod...
21889318 - Effects of the relative humidity and water droplet on adhesion of a bio-inspired nano-f...
15962038 - Depth profiling of sterically-stabilised polystyrene nanoparticles using laser ablation...
19636158 - Composition deviation of arrays of fept nanoparticles starting from poly(styrene)-poly(...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-1-12
Journal Detail:
Title:  Journal of fluorescence     Volume:  -     ISSN:  1573-4994     ISO Abbreviation:  -     Publication Date:  2012 Jan 
Date Detail:
Created Date:  2012-1-11     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9201341     Medline TA:  J Fluoresc     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Nanomaterials and Nanocomposites Laboratory, School of Physical Sciences, Jawaharlal Nehru University, New Delhi, 110067, India.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Different impact of intermediate and unfavourable cytogenetics at the time of diagnosis on outcome o...
Next Document:  A Label-Free Oligonucleotide Based Thioflavin-T Fluorescent Switch for Ag(+) Detection with low Back...