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Photochemistry and Photophysics in Silica-Based Materials: Ultrafast and Single Molecule Spectroscopy Observation
Chemical Reviews ( IF 51.4 ) Pub Date : 2017-10-25 00:00:00 , DOI: 10.1021/acs.chemrev.7b00422 Noemí Alarcos 1 , Boiko Cohen 1 , Marcin Ziółek 2 , Abderrazzak Douhal 1
Chemical Reviews ( IF 51.4 ) Pub Date : 2017-10-25 00:00:00 , DOI: 10.1021/acs.chemrev.7b00422 Noemí Alarcos 1 , Boiko Cohen 1 , Marcin Ziółek 2 , Abderrazzak Douhal 1
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Silica-based materials (SBMs) are widely used in catalysis, photonics, and drug delivery. Their pores and cavities act as hosts of diverse guests ranging from classical dyes to drugs and quantum dots, allowing changes in the photochemical behavior of the confined guests. The heterogeneity of the guest populations as well as the confinement provided by these hosts affect the behavior of the formed hybrid materials. As a consequence, the observed reaction dynamics becomes significantly different and complex. Studying their photobehavior requires advanced laser-based spectroscopy and microscopy techniques as well as computational methods. Thanks to the development of ultrafast (spectroscopy and imaging) tools, we are witnessing an increasing interest of the scientific community to explore the intimate photobehavior of these composites. Here, we review the recent theoretical and ultrafast experimental studies of their photodynamics and discuss the results in comparison to those in homogeneous media. The discussion of the confined dynamics includes solvation and intra- and intermolecular proton-, electron-, and energy transfer events of the guest within the SBMs. Several examples of applications in photocatalysis, (photo)sensors, photonics, photovoltaics, and drug delivery demonstrate the vast potential of the SBMs in modern science and technology.
中文翻译：
二氧化硅基材料中的光化学和光物理：超快和单分子光谱观察
二氧化硅基材料（SBM）广泛用于催化，光子学和药物递送。它们的孔和腔可充当多种客体的宿主，从经典染料到药物和量子点，使受限客体的光化学行为发生变化。来宾种群的异质性以及这些宿主提供的限制会影响所形成的杂化材料的行为。结果，观察到的反应动力学变得明显不同和复杂。研究它们的光行为需要先进的基于激光的光谱学和显微镜技术以及计算方法。由于超快（光谱学和成像）工具的发展，我们见证了科学界对探索这些复合材料的亲密光行为的日益增长的兴趣。这里，我们回顾了有关其光动力学的最新理论和超快实验研究，并讨论了与均相介质相比的结果。对受限动力学的讨论包括溶剂化以及SBM内客体的分子内和分子间，质子，电子和能量转移事件。在光催化，（光）传感器，光子学，光伏技术和药物输送中的几个应用实例证明了SBM在现代科学和技术中的巨大潜力。
更新日期：2017-10-25
中文翻译：
二氧化硅基材料中的光化学和光物理：超快和单分子光谱观察
二氧化硅基材料（SBM）广泛用于催化，光子学和药物递送。它们的孔和腔可充当多种客体的宿主，从经典染料到药物和量子点，使受限客体的光化学行为发生变化。来宾种群的异质性以及这些宿主提供的限制会影响所形成的杂化材料的行为。结果，观察到的反应动力学变得明显不同和复杂。研究它们的光行为需要先进的基于激光的光谱学和显微镜技术以及计算方法。由于超快（光谱学和成像）工具的发展，我们见证了科学界对探索这些复合材料的亲密光行为的日益增长的兴趣。这里，我们回顾了有关其光动力学的最新理论和超快实验研究，并讨论了与均相介质相比的结果。对受限动力学的讨论包括溶剂化以及SBM内客体的分子内和分子间，质子，电子和能量转移事件。在光催化，（光）传感器，光子学，光伏技术和药物输送中的几个应用实例证明了SBM在现代科学和技术中的巨大潜力。
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