Emissive Platinum(II) Cages with Reverse Fluorescence Resonance Energy Transfer for Multiple Sensing
| Autor: | Zhengqing Zhao, Shuai Lu, Kai Wang, Zeyuan Zhang, Mingming Zhang, Bo Zou, Guoping Li, Xiaopeng Li, Gang He, Xingchen Wang, Sanliang Ling, Lianwei Wu, Letian Xu, Yali Hou, Lingzhi Ma |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Range (particle radiation)
Magnetic Resonance Spectroscopy Supramolecular chemistry chemistry.chemical_element General Chemistry Chromophore 010402 general chemistry Photochemistry 01 natural sciences Biochemistry Fluorescence Catalysis Article 0104 chemical sciences Tetragonal crystal system Colloid and Surface Chemistry Förster resonance energy transfer chemistry Bathochromic shift Fluorescence Resonance Energy Transfer Platinum Fluorescent Dyes |
| Zdroj: | J Am Chem Soc |
| ISSN: | 0002-7863 1520-5126 |
| Popis: | It is quite challenging to realize fluorescence resonance energy transfer (FRET) between two chromophores with specific positions and directions. Herein, through the self-assembly of two carefully selected fluorescent ligands via metal-coordination interactions, we prepared two tetragonal prismatic platinum(II) cages with a reverse FRET process between their faces and pillars. Bearing different responses to external stimuli, these two emissive ligands are able to tune the FRET process, thus making the cages sensitive to solvents, pressure, and temperature. First, these cages could distinguish structurally similar alcohols such as n-butanol, t-butanol, and i-butanol. Furthermore, they showed decreased emission with bathochromic shifts under high pressure. Finally, they exhibited a remarkable ratiometric response to temperature over a wide range (223–353 K) with high sensitivity. For example, by plotting the ratio of the maximum emission (I(600)/I(480)) of metallacage 4b against the temperature, the slope reaches 0.072, which is among the highest values for ratiometric fluorescent thermometers reported so far. This work not only offers a strategy to manipulate the FRET efficiency in emissive supramolecular coordination complexes but also paves the way for the future design and preparation of smart emissive materials with external stimuli responsiveness. |
| Databáze: | OpenAIRE |
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