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Ultrafast fluorescence resonance energy transfer in a reverse micelle: Excitation wavelength dependence
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10.1063/1.2403131
/content/aip/journal/jcp/125/22/10.1063/1.2403131
http://aip.metastore.ingenta.com/content/aip/journal/jcp/125/22/10.1063/1.2403131

Figures

Image of Scheme 1.
Scheme 1.

Structure of a AOT reverse micelle.

Image of Scheme 2.
Scheme 2.

Structures of coumarin 480 (A) and fluorescein 548 (B).

Image of FIG. 1.
FIG. 1.

Difference absorption spectrum of C480 in AOT in -heptane at [(i)–(iv)] , 10, 20, and 40.

Image of FIG. 2.
FIG. 2.

(A) Emission spectra of C480 residing in AOT interface (------) and water pool (-∙∙-∙∙-∙∙-) region which were obtained by splitting the experimental emission spectrum (—) of C480 in AOT in -heptane at . (B) Emission spectra of C480 residing in bulk heptane (-∙-∙-∙-), AOT interface (------), and water pool (-∙∙-∙∙-∙∙-) region which were obtained by splitting the experimental emission spectrum (—) of C480 in AOT in -heptane at . Absorption spectrum of F548 (∙∙∙∙∙∙∙∙) shows its overlap with the emission spectra.

Image of FIG. 3.
FIG. 3.

Emission spectrum of coumarin 480 in water in the absence (—) and in the presence of F548 (-∙∙-∙∙-∙∙-) at .

Image of FIG. 4.
FIG. 4.

Picosecond fluorescence decays of (A) C480 (at ) in water in the (i) presence and (ii) absence of F548 and (B) F548 (at ) in water in the (i) presence and (ii) absence of C480 .

Image of FIG. 5.
FIG. 5.

Femtosecond fluorescence transients of (A) C480 (at ) in water in the presence of F548 and (B) F548 (at ) in water in the presence of C480 .

Image of FIG. 6.
FIG. 6.

Emission spectrum of C480 in AOT in -heptane in the presence of [(i)–(iv)] 0, 5, 10, and F548 at (A) and (B) .

Image of FIG. 7.
FIG. 7.

Fluorescence anisotropy decay of C480 in AOT in -heptane at (i) (▵) and (ii) (엯). The points denote the actual values of anisotropy and the solid lines denote the best fit to the experimental data.

Image of FIG. 8.
FIG. 8.

Picosecond fluorescence decays of F548 (at ) in AOT in -heptane for (A) and (B) in the (i) presence and (ii) absence of C480.

Image of FIG. 9.
FIG. 9.

Femtosecond fluorescence transients of F548 (at ) in AOT in -heptane for (A) and (B) .

Tables

Generic image for table
Table I.

Rotational anisotropy parameters of C480 and F548 at different and different excitation wavelength .

Generic image for table
Table II.

Excitation wavelength dependence of rise of acceptor (F548) emission at in AOT reverse micelle ( AOT in -heptane).

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/content/aip/journal/jcp/125/22/10.1063/1.2403131
2006-12-13
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ultrafast fluorescence resonance energy transfer in a reverse micelle: Excitation wavelength dependence
http://aip.metastore.ingenta.com/content/aip/journal/jcp/125/22/10.1063/1.2403131
10.1063/1.2403131
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