Namboodiri, C.K.R. ; Bisht, P.B. ; Mukkamala, R. ; Chandra, B. ; Aidhen, I.S. (2013) Solvatochromism, multiphoton fluorescence, and resonance energy transfer in a new octupolar dye-pair Chemical Physics, 415 . pp. 190-195. ISSN 0301-0104
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Official URL: http://doi.org/10.1016/j.chemphys.2013.01.012
Related URL: http://dx.doi.org/10.1016/j.chemphys.2013.01.012
Abstract
A new octupolar molecule (E, E, E)-2,4,6-Tris [2-(4-N, N-diphenylaminophenyl) vinyl] pyridine (DPATSP) has been synthesized and studied by steady state and time-resolved fluorescence in condensed phase. The large π-conjugation along the chain has been found to be responsible for large solvent-induced shift of fluorescence. Pumping with fs pulses at 790 nm have been found to induce the two-photon fluorescence. The two-photon absorption (2PA) cross section has been measured by the two photon induced fluorescence (2PIF) method. The N-methyl derivative of DPATSP shows a red shift in the absorption spectrum. The overlap of the fluorescence spectrum of DPATSP with the absorption spectrum of the DPATSP-Me makes a Förster resonance energy transfer (FRET) system. The FRET efficiency has been studied by embedding this dye pair in a polymer matrix.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier B.V. |
| Keywords: | Intramolecular charge transfer; Excited state dipole moment; Two photon absorption (2PA) cross section; Förster resonance energy transfer (FRET) |
| ID Code: | 130269 |
| Deposited On: | 24 Nov 2022 04:27 |
| Last Modified: | 05 Dec 2022 06:11 |
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