Dipartimento di Scienze e Innovazione Tecnologica, Universitá del Piemonte Orientale A. Avogadro, Via Teresa Michel 11, I-15121 Alessandria, Italy.
Chemistry. 2012 Nov 26;18(48):15310-5. doi: 10.1002/chem.201202505. Epub 2012 Oct 10.
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.
设计并制备了一种新型的混合光稳定给体-受体介孔 SBA-15 硅体系。它由一个封装的给体，即超黄（SY）聚合物组成，该聚合物将光激发能量直接转移到连接在骨架外的受体染料上。所得复合材料通过 X 射线衍射、氮物理吸附孔隙率分析、漫反射（DR）-紫外/可见光谱和光致发光、空间和时间分辨共聚焦显微镜进行了表征。物理化学分析表明，该体系表现为高效的Förster 共振能量转移（FRET）对，并且从受体中观察到高的光致发光。所提出的光子天线是聚合物负载介孔硅的染料敏化的第一个实例，代表着在寻找具有光电应用的新型高效和稳定材料方面迈出了一步。
