Efficient Photoinduced Energy Transfer in a Newly Developed Hybrid SBA‐15 Photonic Antenna |
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Authors: | Dr Fabio Cucinotta Dr Fabio Carniato Dr André Devaux Prof Dr Luisa De Cola Prof Leonardo Marchese |
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Institution: | 1. Dipartimento di Scienze e Innovazione Tecnologica, Universitá del Piemonte Orientale “A. Avogadro”, Via Teresa Michel 11, I‐15121 Alessandria (Italy), Fax: (+39)?0131‐360250;2. Physikalisches Institut, Westf?lische Wilhelms‐Universit?t Münster, Heisenbergstrasse 11, 48149 Münster (Germany) |
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Abstract: | A new hybrid photostable donor–acceptor mesoporous SBA‐15 silica system was designed and prepared. It consists of an encapsulated donor, the Super Yellow (SY) polymer, which transfers the photoexcitation energy directly to an acceptor dye that is linked outside the framework. The obtained composite material was characterized by X‐ray diffraction, nitrogen‐physisorption porosimetry, diffuse‐reflectance (DR)‐UV/Vis spectroscopy and photoluminescence, space‐ and time‐resolved confocal microscopy. The physico‐chemical analyses showed that the system behaves as an efficient Förster resonance energy transfer (FRET) pair, and high photoluminescence was observed from the acceptor. The presented photonic antenna is the first example of dye sensitization by polymer‐loaded mesoporous silica and represents a step forward in the search for new efficient and stable materials with opto‐electronic applications. |
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Keywords: | donor– acceptor systems energy transfer mesoporous materials photonic antenna semiconductors |
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