Photoinduced Phase Transition of Ce-UiO-66 to Ce-BDC-OH

Guo，Zhixiong1; Luo，Qian Cheng1; Qin，Lei2; Tian，Zhimin3; Zheng，Yan Zhen1; Ma，Yuanyuan3; Qu，Yongquan1,3

2022-06-27

10.1021/acs.inorgchem.2c00784

Inorganic chemistry   Impact Factor & Quartile

1520-510X

External stimuli-responsive phase transition of metal-organic frameworks (MOFs) introduces intriguing functions for diverse applications under practical settings. Herein, we reported a phase transition from cubic Ce-UiO-66 to triclinic Ce-BDC-OH under light irradiation. Such a phase transition underwent a ligand-to-metal charge transfer process, which was unambiguously revealed by Fourier transform infrared spectroscopy, nuclear magnetic resonance, electron paramagnetic resonance, etc. We proposed a phase transition mechanism through (1) the photoreduction of the metal core from Ce4+ into Ce3+; (2) the photogeneration of •OH and hydroxylation of BDC into BDC-OH; and (3) the carboxylate migration and lattice rearrangement for transitions. The phenomenon of the Ce4+-to-Ce3+ reduction also enables a diamagnetism-to-paramagnetism transition, suggesting its potential as a photostimulus-responsive magnetic switch.

EI

English

NI Journal Papers

Others

20222812332390

Charge transfer ; Fourier transform infrared spectroscopy ; Nuclear magnetic resonance ; Nuclear magnetic resonance spectroscopy ; Organometallics ; Paramagnetic resonance ; Paramagnetism

Magnetism: Basic Concepts and Phenomena:701.2 ; Chemistry:801 ; Chemical Reactions:802.2 ; Organic Compounds:804.1

2-s2.0-85133103369

Scopus

1.Center for Applied Chemical Research,Frontier Institute of Science and Technology,Xi'an Jiaotong University,Xi'an,710054,China
2.Department of Chemistry,Guangdong Provincial Key Laboratory of Energy Materials for Electric Power,Southern University of Science and Technology,Shenzhen,518055,China
3.Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology,School of Chemistry and Chemical Engineering,Northwestern Polytechnical University,Xi'an,710054,China

Guo，Zhixiong,Luo，Qian Cheng,Qin，Lei,et al. Photoinduced Phase Transition of Ce-UiO-66 to Ce-BDC-OH[J]. Inorganic chemistry,2022,61(25):9557-9563.

Guo，Zhixiong.,Luo，Qian Cheng.,Qin，Lei.,Tian，Zhimin.,Zheng，Yan Zhen.,...&Qu，Yongquan.(2022).Photoinduced Phase Transition of Ce-UiO-66 to Ce-BDC-OH.Inorganic chemistry,61(25),9557-9563.

Guo，Zhixiong,et al."Photoinduced Phase Transition of Ce-UiO-66 to Ce-BDC-OH".Inorganic chemistry 61.25(2022):9557-9563.