Mesoscopic FRET Antenna Materials by Self‐Assembling Iridium(III) Complexes and BODIPY Dyes,Chemistry - A European Journal

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Mesoscopic FRET Antenna Materials by Self‐Assembling Iridium(III) Complexes and BODIPY Dyes
Chemistry - A European Journal ( IF 3.9 ) Pub Date : 2018-07-18 , DOI: 10.1002/chem.201802745
Andrew J. Bagnall ₁ , Marina Santana Vega ₁ , Jonathan Martinelli ₂ , Kristina Djanashvili ₂ , Fabio Cucinotta ₁

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This study presents a new design of light‐harvesting antenna materials using two dyes organised into mesoporous silica: an iridium(III) complex and a BODIPY‐derived surfactant that undergo Förster resonance energy transfer (FRET), acting, respectively, as donor and acceptor. The chemical structure of each dye determines the position taken within the micellar templates used for the synthesis of the silica host, which maintains mesopore order as shown by TEM imaging. Steady‐state and time‐resolved UV‐visible spectroscopy revealed that incorporation of the iridium complex into the silica shields it from oxygen‐induced quenching and allows a degree of control over the donor–acceptor distance, yielding FRET efficiencies from 24 to 76 % and tuneable emission ranges. Such silica‐based antennae show promising properties for the realisation of polychromatic sensitisers for photovoltaics and photocatalysis.

中文翻译：

自组装铱（III）配合物和BODIPY染料的介观FRET天线材料

这项研究提出了一种新的光收集天线材料设计，它使用两种组织成中孔二氧化硅的染料：铱（III）配合物和BODIPY衍生的表面活性剂，它们分别经历了Förster共振能量转移（FRET），分别作为供体和受体。每种染料的化学结构决定了用于合成二氧化硅基质的胶束模板内的位置，该基质保持介孔有序，如TEM成像所示。稳态和时间分辨的紫外可见光谱表明，铱配合物掺入二氧化硅可以使其免受氧诱导的猝灭，并可以一定程度控制供体-受体的距离，从而使FRET效率从24％提高到76％，并且可调节的发射范围。

更新日期：2018-07-18

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