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

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (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 languageEnglish
Title of host publicationSolid State Physics - Proceedings of the 55th DAE Solid State Physics Symposium 2010
Pages196-197
Number of pages2
Volume1349
EditionPART A
DOIs
Publication statusPublished - 12-09-2011
Event55th DAE Solid State Physics Symposium 2010 - Manipal, India
Duration: 26-12-201030-12-2010

Conference

Conference55th DAE Solid State Physics Symposium 2010
CountryIndia
CityManipal
Period26-12-1030-12-10

Fingerprint

polymethyl methacrylate
dosage
fluorescence
electron irradiation
positron annihilation
electrons
molecular rotation
composite materials
crosslinking
chromophores
cleavage
irradiation
augmentation
polymers
matrices
molecules

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Ravindrachary, I. V., Bhajantri, R. F., Harisha, A., & Praveena, S. D. (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 ed., Vol. 1349, pp. 196-197) https://doi.org/10.1063/1.3605803
Ravindrachary, Ismayil V. ; Bhajantri, R. F. ; Harisha, A. ; Praveena, S. D. / Free volume related fluorescence properties of electron irradiated chalcone doped PMMA films. Solid State Physics - Proceedings of the 55th DAE Solid State Physics Symposium 2010. Vol. 1349 PART A. ed. 2011. pp. 196-197
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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.",
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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.; Praveena, S. D.

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 proceedingConference contribution

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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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Ravindrachary IV, Bhajantri RF, Harisha A, Praveena SD. 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 ed. Vol. 1349. 2011. p. 196-197 https://doi.org/10.1063/1.3605803