An Experimental and Theoretical Test of Dielectric Friction Models Using Rotational Diffusion of 7-Diethylamino-2-H-1-Benzopyran-2-One in Non-associative Solvents.

Anil Kumar, C G Renuka, Y F Nadaf

Abstract read

In one paragraph

Article in Journal of fluorescence, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it

0cells of the map it votes in

1citing papers in PubMed

0.6field-weighted citation impact, top 23% of its field

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

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3 · Its place in the literature

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1 citing paper in PubMed, 4 citations in OpenAlex.

Experimental and Theoretical Rotational Diffusion Studies of 7DM4M1M1,8, N-2(1H)-one and 7A4T2H1B-2-one in Series of Alcohol Solvents: Stoke's-Einstein-Debye and Alavi-Waldeck Models.Journal of fluorescence · 2025
Article

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5 · Who and what money

Authors and funding

3 authors at 2 institutions in 1 country.

Anil KumarP.G. Department of Physics, Sri Siddeshwara Government First Grade College, Naragund, 582207, India.

C G RenukaDepartment of Physics, Jnanabharathi campus, Bangalore University, Bengaluru, 560056, India.

Y F NadafDepartment of Physics and Research Center, Maharani Science College for Women, Bengaluru, 560001, India. dryfnadaf@gmail.com.ORCID http://orcid.org/0000-0001-8605-3880

Bangalore University · INUniversity College for Women · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The rotational re-orientations times of the 7-DHB dye molecule have been examined in non-associative solvents (DMSO and Octanenitrile) by varying the temperature, by employing the Steady-State Fluorescence Depolarisation and Time-Correlated Single Photon Counting (TCSPC) techniques. Rotational re-orientations time values in DMSO are found larger by a factor of 1.136 than octanenitrile, which indicates that 7-DHB laser dye is experiencing higher friction in DMSO than octanenitrile. To determine mechanical friction Stokes Einstein's Debye theory (SED) -with a stick, slip boundary conditions parameters are used and found an interesting super slip trend. Point dipole models as Nee-Zwanzig (NZ) and van der Zwan-Hynes (ZH) fail to explain experimental dielectric friction observed trends. Alavi-Waldeck model successfully explains the observed dielectric friction trend in non-associative solvents.

Indexed as

Charge distributionDielectric theoriesDiffusionMolecular correlationNon-associative solvents

Identifiers

PMID31273534

DOI10.1007/s10895-019-02402-3

OpenAlexW2953791284

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.