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
DO - 10.1063/1.3605803
M3 - Conference contribution
AN - SCOPUS:80052452832
SN - 9780735409057
VL - 1349
T3 - AIP Conference Proceedings
SP - 196
EP - 197
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 -