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Differential Photoluminescent and Electrochemiluminescent Behavior for Resonance Energy Transfer Processes in Thermoresponsive Microgels

dc.contributor.authorPINAUD, F.
dc.contributor.authorMILLEREUX, R.
dc.contributor.authorVIALAR-TRARIEUX, P.
dc.contributor.authorCATARGI, Bogdan
dc.contributor.authorPINET, S.
dc.contributor.authorGOSSE, I.
dc.contributor.authorSOJIC, N.
dc.contributor.authorRAVAINE, Valérie
dc.date.accessioned2020-09-03T08:01:57Z
dc.date.available2020-09-03T08:01:57Z
dc.date.issued2015
dc.identifier.issn1520-5207
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/10937
dc.description.abstractEnStimuli-responsive microgels with redox and luminescent resonance energy transfer (LRET) properties are reported. Poly(N-isopropylacrylamide) microgels are functionalized simultaneously with two models dyes: a derivative of tris(bipyridine) ruthenium complex and cyanine 5. Both moieties are chosen as a pair of luminophores with a spectral overlap for resonance energy transfer, where the ruthenium complex acts as a donor and the cyanine an acceptor. The effect of the temperature on the efficiency of the LRET of the microgels has been investigated and compared using either photoluminescence (PL) or electrochemiluminescence (ECL) as the excitation process. In PL, the synthesized microgels exhibit resonance energy transfer regardless of the swelling degree of the microgels. The transfer efficiency is a function of the donor-acceptor distance and can be tuned either by the swell-collapse phase transition or by the dye content in the microgel network. In ECL, the microgels emit light only at the wavelength of the ruthenium complex because the resonance energy transfer does not occur. Indeed, even within the microgel matrix, the cyanine dye is oxidized at the potential required for ECL generation, which impairs its emitting properties. Thus, both excitation channels (i.e., PL and ECL) show differential behavior for the resonance energy transfer processes.
dc.language.isoen
dc.title.enDifferential Photoluminescent and Electrochemiluminescent Behavior for Resonance Energy Transfer Processes in Thermoresponsive Microgels
dc.title.alternativeThe journal of physical chemistry. B
dc.typeArticle de revue
dc.identifier.doi10.1021/acs.jpcb.5b06920
dc.subject.halChimie/Matériaux
bordeaux.journalJ Phys Chem B
bordeaux.page12954-12961
bordeaux.volume119
bordeaux.hal.laboratoriesInstitut de Chimie & de Biologie des Membranes & des Nano-objets (CBMN) - UMR 5248*
bordeaux.hal.laboratoriesInstitut de Chimie & de Biologie des Membranes & des Nano-objets (CBMN, UMR 5248)
bordeaux.issue40
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
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