Steady-state absorption (a) and fluorescence spectrum (b) of ; absorption (c) and fluorescence spectrum (d) of in thin films of PVA.
Fluorescence spectra of in thin films (thickness of ) of PVA with varying concentrations of DMOCI as (a) , (b) , (c) , (d) , (e) , and (f) .
Fluorescence decay curves for with [DMOCI] of (a) ; (b) in PVA (top panel). IRF is the instrument response function. The solid line in profile (a) is a single exponential fit and the corresponding residual is shown in panel A. The solid line in profile (b) is a Förster fit. The residuals for single exponential and Förster fits for this are shown in panels B and C, respectively.
Fluorescence decay curve for in the presence of in methanol (top panel). IRF is the instrument response function. The solid line is the Yokota-Tanimoto fit. The residuals for single exponential (panel A) and Yokota-Tanimoto fit (panel B) are shown at the bottom.
Plot of the observed values of the reduced concentration [from Förster fit in PVA and from Yokota-Tanimoto fit in methanol] vs acceptor concentration for . The solid lines are the linear fits for the data points.
Plot of energy transfer efficiency vs acceptor concentration for . Panel A shows the values obtained from Förster fit (-엯-), spectroscopic measurements (-●-), and after including the migration effects (-▴-) in PVA. Panel B shows the values obtained from Yokota-Tanimoto fit (-▴-) and spectroscopic measurements (-●-) in methanol.
Fluorescence decay curve profile for in presence of (film thickness of ). IRF is the instrument response function. The solid line is the double exponential fit with Eq. (13). The bottom panel shows the residuals.
Photophysical parameters for C47-DMOCI system by using .
Experimentally obtained parameters in PVA at for single exponential fit [Eq. (4)] and Förster fit [Eq. (5)] .
Experimentally observed and calculated values of various parameters in PVA [Spectroscopically obtained critical transfer distance, ].
Experimentally observed values of various parameters in methanol (at ) for single exponential [Eq. (4)] and Yokota-Tanimoto fit [Eq. (10)] .
Comparison of observed value of in solid matrix and in liquid .
Comparison of calculated values of rate of energy transfer in PVA and methanol. .
The observed lifetimes and amplitudes at .
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