Free volume related fluorescence properties of electron irradiated chalcone doped PMMA films

Ismayil V. Ravindrachary; R. F. Bhajantri; A. Harisha; S. D. Praveena

doi:10.1063/1.3605803

Free volume related fluorescence properties of electron irradiated chalcone doped PMMA films

Ismayil V. Ravindrachary, R. F. Bhajantri, A. Harisha, S. D. Praveena

Department of Physics, Manipal Institute of Technology, Manipal

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Citations (Scopus)

Abstract

Effect of electron irradiation on free volume related fluorescence properties of chalcone doped Poly(methyl methacrylate) (PMMA) composite films have been studied using Positron Annihilation and Fluorescence spectroscopic techniques. In this polymer composite, enhancement of fluorescence at lower doses and reduction at higher doses has been observed under electron irradiation. From Positron annihilation studies suggests that at lower doses of irradiation induced crosslinking which affect the free volume properties and inturn hinders the chalcone molecular rotation. At higher doses chain scission process affect matrix relaxation. Under the restricted condition the chromophore molecules likely to emit enhanced fluorescence and its mobility is directly related to the free volume around it.

Original language	English
Title of host publication	Solid State Physics - Proceedings of the 55th DAE Solid State Physics Symposium 2010
Pages	196-197
Number of pages	2
Volume	1349
Edition	PART A
DOIs	https://doi.org/10.1063/1.3605803
Publication status	Published - 12-09-2011
Event	55th DAE Solid State Physics Symposium 2010 - Manipal, India Duration: 26-12-2010 → 30-12-2010

Conference

Conference	55th DAE Solid State Physics Symposium 2010
Country/Territory	India
City	Manipal
Period	26-12-10 → 30-12-10

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1063/1.3605803

Cite this

@inproceedings{56b54ac4bb8f4aabbf9d3641d0069c36,

title = "Free volume related fluorescence properties of electron irradiated chalcone doped PMMA films",

abstract = "Effect of electron irradiation on free volume related fluorescence properties of chalcone doped Poly(methyl methacrylate) (PMMA) composite films have been studied using Positron Annihilation and Fluorescence spectroscopic techniques. In this polymer composite, enhancement of fluorescence at lower doses and reduction at higher doses has been observed under electron irradiation. From Positron annihilation studies suggests that at lower doses of irradiation induced crosslinking which affect the free volume properties and inturn hinders the chalcone molecular rotation. At higher doses chain scission process affect matrix relaxation. Under the restricted condition the chromophore molecules likely to emit enhanced fluorescence and its mobility is directly related to the free volume around it.",

author = "Ravindrachary, {Ismayil V.} and Bhajantri, {R. F.} and A. Harisha and Praveena, {S. D.}",

year = "2011",

month = sep,

day = "12",

doi = "10.1063/1.3605803",

language = "English",

isbn = "9780735409057",

volume = "1349",

pages = "196--197",

booktitle = "Solid State Physics - Proceedings of the 55th DAE Solid State Physics Symposium 2010",

edition = "PART A",

note = "55th DAE Solid State Physics Symposium 2010 ; Conference date: 26-12-2010 Through 30-12-2010",

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Ravindrachary, IV, Bhajantri, RF, Harisha, A & Praveena, SD 2011, Free volume related fluorescence properties of electron irradiated chalcone doped PMMA films. in Solid State Physics - Proceedings of the 55th DAE Solid State Physics Symposium 2010. PART A edn, vol. 1349, pp. 196-197, 55th DAE Solid State Physics Symposium 2010, Manipal, India, 26-12-10. https://doi.org/10.1063/1.3605803

Free volume related fluorescence properties of electron irradiated chalcone doped PMMA films. / Ravindrachary, Ismayil V.; Bhajantri, R. F.; Harisha, A. et al.
Solid State Physics - Proceedings of the 55th DAE Solid State Physics Symposium 2010. Vol. 1349 PART A. ed. 2011. p. 196-197.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Free volume related fluorescence properties of electron irradiated chalcone doped PMMA films

AU - Ravindrachary, Ismayil V.

AU - Bhajantri, R. F.

AU - Harisha, A.

AU - Praveena, S. D.

PY - 2011/9/12

Y1 - 2011/9/12

N2 - Effect of electron irradiation on free volume related fluorescence properties of chalcone doped Poly(methyl methacrylate) (PMMA) composite films have been studied using Positron Annihilation and Fluorescence spectroscopic techniques. In this polymer composite, enhancement of fluorescence at lower doses and reduction at higher doses has been observed under electron irradiation. From Positron annihilation studies suggests that at lower doses of irradiation induced crosslinking which affect the free volume properties and inturn hinders the chalcone molecular rotation. At higher doses chain scission process affect matrix relaxation. Under the restricted condition the chromophore molecules likely to emit enhanced fluorescence and its mobility is directly related to the free volume around it.

AB - Effect of electron irradiation on free volume related fluorescence properties of chalcone doped Poly(methyl methacrylate) (PMMA) composite films have been studied using Positron Annihilation and Fluorescence spectroscopic techniques. In this polymer composite, enhancement of fluorescence at lower doses and reduction at higher doses has been observed under electron irradiation. From Positron annihilation studies suggests that at lower doses of irradiation induced crosslinking which affect the free volume properties and inturn hinders the chalcone molecular rotation. At higher doses chain scission process affect matrix relaxation. Under the restricted condition the chromophore molecules likely to emit enhanced fluorescence and its mobility is directly related to the free volume around it.

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U2 - 10.1063/1.3605803

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SN - 9780735409057

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BT - Solid State Physics - Proceedings of the 55th DAE Solid State Physics Symposium 2010

T2 - 55th DAE Solid State Physics Symposium 2010

Y2 - 26 December 2010 through 30 December 2010

ER -

Free volume related fluorescence properties of electron irradiated chalcone doped PMMA films

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