Radical Hybrids with Multiple Responses to Thermal Stimuli via Electron Transfer

Yu-Feng Sang; Hao Zeng; Liang-Jin XuZhong-Ning Chen

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Radical Hybrids with Multiple Responses to Thermal Stimuli via Electron Transfer

机译：Radical Hybrids with Multiple Responses to Thermal Stimuli via Electron Transfer

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It is desirable to develop semiconductors with simultaneously multiple responses to single stimuli. Herein, a thermally responsive hybrid semiconductor (AEV)Pb2Br8 (AEV4+ = 1,1′-bis(2-ammonioethyl)-4,4′- bipyridine-1,1′- diium) is successfully prepared by introducing functionalized organic cations into 1D lead(Ⅱ) chains. The lead(Ⅱ) chain contains an edge-sharing PbBr6 octahedron with highly electron-deficient cations distributed in the interspace of the inorganic framework. Interestingly, the as-formed hybrid exhibits extraordinary thermochromic behavior along with intriguing temperaturedependent conductivity and thermal conductivity due to the thermal motion of the electrons in the hybrid. Specifically, the color of the pristine hybrid changes from yellow to brown when the temperature rises to 70 ℃, and gradually deepens as the temperature continues to rise, accompanied by the continuous decline in electric conductivity and thermal conductivity. Once heating is stopped, the color and conductivity recover to the original state in a few minutes. As demonstrated by electron paramagnetic resonance and X-ray photoelectron spectroscopy studies, the thermal-induced electron transfer is likely responsible for the intriguing thermally responsive behaviors. This work provides a paradigm for the modular and functional design of hybrid materials that manifest potential applications in semiconductor refrigeration, thermal power generation, intelligent circuit, and other opt-electronic devices.

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来源
《Advanced functional materials》 |2022年第39期|2206459.1-2206459.7|共7页
作者
Yu-Feng Sang; Hao Zeng; Liang-Jin XuZhong-Ning Chen;
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作者单位

State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002, China,School of Physical Science and Technology Shanghai Tech University Shanghai 201210, China,University of C;

State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002, China,University of Chinese Academy of Sciences Beijing 100039, China;

State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002, ChinaState Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002, China,School of Physical Science and Technology Shanghai Tech University Shanghai 201210, China,Fujian Science;

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正文语种英语
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conductivities; electron transfer; hybrid; radicals; thermochromism;

Radical Hybrids with Multiple Responses to Thermal Stimuli via Electron Transfer

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