Long-afterglow metal-organic frameworks: reversible guest-induced phosphorescence tunability

Chemical Science
Xiaogang Yang, Dongpeng Yan

Abstract

Luminescent metal-organic frameworks (MOFs) have received much attention due to their wide structural tunability and potential application in light-emitting diodes, biological imaging and chemical sensors. However, successful examples of long-persistent afterglow MOFs are still quite limited to date. In this work, we report that two types of Zn-terephthalate (TPA) MOFs (namely [Zn(TPA)(DMF)] (1-DMF) and MOF-5) could exhibit an obvious room-temperature afterglow emission with a time-resolved luminescence lifetime as high as 0.47 seconds. The phosphorescence-based afterglow was also highly sensitive to the temperature, and the reversible emission intensity could be recycled under high/low temperatures. Moreover, both 1-DMF and MOF-5 showed highly tunable afterglow phosphorescence colors (from cyan to yellow and from green to red, respectively) upon treatment with pyridine solution. The fluorescence/phosphorescence emission color of MOF-5 can be reversibly switched due to the addition and removal of a pyridine guest to and from the host nanochannel, as shown in both experimental and computational studies. Therefore, this work not only shows a facile method to develop MOF-based long-afterglow materials at room temperature, but also...Continue Reading

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Citations

Mar 13, 2019·Chemistry : a European Journal·Fumiya KobayashiMasaaki Nakamura
Dec 6, 2017·Angewandte Chemie·Zhichao ChengWei Huang
Apr 11, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Rong-Yan WangJi-Qing Xu
Jun 28, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Xiao-Gang YangLu-Fang Ma
May 3, 2019·Chemistry, an Asian Journal·Khemnath Patir, Sonit Kumar Gogoi
May 28, 2019·Angewandte Chemie·Fahime BigdeliHong-Cai Zhou
Dec 19, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Xiao-Gang YangLu-Fang Ma
Feb 8, 2020·Chemistry, an Asian Journal·Jiahuan ZhiWei Huang
Mar 13, 2020·Chemistry : a European Journal·Zheng WangCheng-Yong Su
Nov 26, 2019·Advanced Materials·Ritesh HaldarChristof Wöll
Jun 25, 2020·Chemical Communications : Chem Comm·Bo ZhouDongpeng Yan
Jul 24, 2020·Chemical Communications : Chem Comm·Yoshinobu KamakuraDaisuke Tanaka
Sep 17, 2016·Advanced Materials·Shen XuWei Huang
Feb 29, 2020·Research : a Science Partner Journal·Mingxing GuWei Huang
Jan 18, 2017·Chemical Communications : Chem Comm·Xiaogang Yang, Dongpeng Yan

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Methods Mentioned

BETA
X-ray
phosphorescence
fluorescence microscopy

Software Mentioned

SHELXL
Dmol3
SHELXS
97
SADABS

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