Abstract
Ultrafast Forster resonance energy transfer (FRET) between a donor (coumarin dye) and a cationic acceptor (rhodamine 6G) situated within and on the exterior walls, respectively, of a bimolecular capsule made up of anionic octa-acid (OA) is studied by femtosecond up-conversion. 1D and 2D 1H NMR spectral analyses reveal that donors coumarin-1, coumarin-153, and coumarin-480 form a 1:2 complex (guest to host) and are enclosed within the OA capsule. NMR and emission spectra suggest that the cationic acceptor rhodamine 6G is attached to the anionic exterior walls of the OA capsule. The acceptor emission displays a rise component of 1-3 ps which corresponds to a donor-acceptor distance (RDA) of ∼13 Å and thus indicates the occurrence of ultrafast FRET between the donor and acceptor at close contact.
| Original language | English |
|---|---|
| Pages (from-to) | 9593-9600 |
| Number of pages | 8 |
| Journal | Journal of Physical Chemistry C |
| Volume | 115 |
| Issue number | 19 |
| DOIs | |
| State | Published - May 19 2011 |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Electronic, Optical and Magnetic Materials
- Surfaces, Coatings and Films
- Energy(all)
Cite this
Ultrafast singlet-singlet energy transfer between an acceptor electrostatically attached to the walls of an organic capsule and the enclosed donor. / Gupta, Shipra; Adhikari, Aniruddha; Mandal, Amit Kumar; Bhattacharyya, Kankan; Ramamurthy, Vaidhyanathan.
In: Journal of Physical Chemistry C, Vol. 115, No. 19, 19.05.2011, p. 9593-9600.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Ultrafast singlet-singlet energy transfer between an acceptor electrostatically attached to the walls of an organic capsule and the enclosed donor
AU - Gupta, Shipra
AU - Adhikari, Aniruddha
AU - Mandal, Amit Kumar
AU - Bhattacharyya, Kankan
AU - Ramamurthy, Vaidhyanathan
PY - 2011/5/19
Y1 - 2011/5/19
N2 - Ultrafast Forster resonance energy transfer (FRET) between a donor (coumarin dye) and a cationic acceptor (rhodamine 6G) situated within and on the exterior walls, respectively, of a bimolecular capsule made up of anionic octa-acid (OA) is studied by femtosecond up-conversion. 1D and 2D 1H NMR spectral analyses reveal that donors coumarin-1, coumarin-153, and coumarin-480 form a 1:2 complex (guest to host) and are enclosed within the OA capsule. NMR and emission spectra suggest that the cationic acceptor rhodamine 6G is attached to the anionic exterior walls of the OA capsule. The acceptor emission displays a rise component of 1-3 ps which corresponds to a donor-acceptor distance (RDA) of ∼13 Å and thus indicates the occurrence of ultrafast FRET between the donor and acceptor at close contact.
AB - Ultrafast Forster resonance energy transfer (FRET) between a donor (coumarin dye) and a cationic acceptor (rhodamine 6G) situated within and on the exterior walls, respectively, of a bimolecular capsule made up of anionic octa-acid (OA) is studied by femtosecond up-conversion. 1D and 2D 1H NMR spectral analyses reveal that donors coumarin-1, coumarin-153, and coumarin-480 form a 1:2 complex (guest to host) and are enclosed within the OA capsule. NMR and emission spectra suggest that the cationic acceptor rhodamine 6G is attached to the anionic exterior walls of the OA capsule. The acceptor emission displays a rise component of 1-3 ps which corresponds to a donor-acceptor distance (RDA) of ∼13 Å and thus indicates the occurrence of ultrafast FRET between the donor and acceptor at close contact.
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U2 - 10.1021/jp2001578
DO - 10.1021/jp2001578
M3 - Article
AN - SCOPUS:79956072520
VL - 115
SP - 9593
EP - 9600
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 19
ER -