Volume 131, Issue 40 pp. 14517-14523
Forschungsartikel

Pressure-Induced Multiphoton Excited Fluorochromic Metal–Organic Frameworks for Improving MPEF Properties

Cheng-Xia Chen

Cheng-Xia Chen

MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional materials, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 China

These authors contributed equally to this work.

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Shao-Yun Yin

Shao-Yun Yin

MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional materials, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 China

These authors contributed equally to this work.

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Zhang-Wen Wei

Zhang-Wen Wei

MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional materials, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 China

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Qian-Feng Qiu

Qian-Feng Qiu

MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional materials, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 China

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Neng-Xiu Zhu

Neng-Xiu Zhu

MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional materials, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 China

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Ya-Nan Fan

Ya-Nan Fan

MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional materials, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 China

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Prof. Mei Pan

Corresponding Author

Prof. Mei Pan

MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional materials, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 China

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Prof. Cheng-Yong Su

Prof. Cheng-Yong Su

MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional materials, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 China

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First published: 29 July 2019
Citations: 14

Abstract

In multiphoton excited fluorescence (MPEF), high-energy upconversion emission is obtained from low-energy excitation by absorbance of two or more photons simultaneously. In a pressure-induced fluorochromic process, the emission energy is switched by outer pressure stimuli. Now, five metal–organic frameworks containing the same ligand with simultaneous multiphoton absorption and pressure-induced fluorochromic attributes were studied. One-, two-, and three-photon excited fluorescence (1/2/3PEF) can be achieved in the frameworks, which exhibit pressure-induced blue-to-yellow fluorochromism. The performances are closely dependent with the topologies, flexibilities, and packing states of the frameworks and chromophores therein. The multiphoton upconversion performance can be intensified by pressure-related structural contraction. Over ten-fold increment in the 2PA active cross-section up to 2217 GM is achieved in pressed LIFM-114 compared with the 210 GM for pristine sample at 780 nm.

Conflict of interest

The authors declare no conflict of interest.

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