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Intrinsic Semiconducting Behavior in a Large Mixed‐Valent Uranium(V/VI) Cluster
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2021-02-15 , DOI: 10.1002/anie.202017298 Mingxing Zhang 1 , Chengyu Liang 2 , Guo-Dong Cheng 3 , Junchang Chen 4 , Yumin Wang 2 , Linwei He 2 , Liwei Cheng 2 , Shicheng Gong 2 , Duo Zhang 2 , Jiong Li 5 , Shu-Xian Hu 3 , Juan Diwu 2 , Guozhong Wu 6 , Yaxing Wang 7 , Zhifang Chai 2 , Shuao Wang 8
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2021-02-15 , DOI: 10.1002/anie.202017298 Mingxing Zhang 1 , Chengyu Liang 2 , Guo-Dong Cheng 3 , Junchang Chen 4 , Yumin Wang 2 , Linwei He 2 , Liwei Cheng 2 , Shicheng Gong 2 , Duo Zhang 2 , Jiong Li 5 , Shu-Xian Hu 3 , Juan Diwu 2 , Guozhong Wu 6 , Yaxing Wang 7 , Zhifang Chai 2 , Shuao Wang 8
Affiliation
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We disclose the intrinsic semiconducting properties of one of the largest mixed‐valent uranium clusters, [H3O+][UV(UVIO2)8(μ3‐O)6(PhCOO)2(Py(CH2O)2)4(DMF)4] (Ph=phenyl, Py=pyridyl, DMF=N,N‐dimethylformamide) (1). Single‐crystal X‐ray crystallography demonstrates that UV center is stabilized within a tetraoxo core surrounded by eight uranyl(VI) pentagonal bipyramidal centers. The oxidation states of uranium are substantiated by spectroscopic data and magnetic susceptibility measurement. Electronic spectroscopy and theory corroborate that UV species serve as electron donors and thus facilitate 1 being a n‐type semiconductor. With the largest effective atomic number among all reported radiation‐detection semiconductor materials, charge transport properties and photoconductivity were investigated under X‐ray excitation for 1: a large on‐off ratio of 500 and considerable charge mobility lifetime product of 2.3×10−4 cm2 V−1, as well as a high detection sensitivity of 23.4 μC Gyair−1 cm−2.
中文翻译：
大型混合价铀（V / VI）簇中的本征半导体行为
我们公开了最大的混合价铀集群之一的内在半导体特性，[H 3 ö + ] [U V（U VI Ò 2）8（μ 3 -O）6（PhCOO）2（PY（CH 2 ö ）2）4（DMF）4 ]（Ph =苯基，Py =吡啶基，DMF = N，N-二甲基甲酰胺）（1）。单晶X射线晶体学表明U V中心稳定在被八个铀酰（VI）五边形双锥体中心包围的四氧核内。铀的氧化态由光谱数据和磁化率测量证实。电子光谱学和理论证实了U V物种可以作为电子给体，因此有助于1是一种类型的半导体。在所有报道的辐射探测半导体材料中，有效原子序数最大，研究了X射线激发下的电荷传输特性和光电导率：1：大开-关比为500，电荷迁移率寿命乘积为2.3×10 -4 厘米2 V -1以及23.4μCGy空气-1 cm -2的高检测灵敏度。
更新日期：2021-04-23
中文翻译：
大型混合价铀（V / VI）簇中的本征半导体行为
我们公开了最大的混合价铀集群之一的内在半导体特性，[H 3 ö + ] [U V（U VI Ò 2）8（μ 3 -O）6（PhCOO）2（PY（CH 2 ö ）2）4（DMF）4 ]（Ph =苯基，Py =吡啶基，DMF = N，N-二甲基甲酰胺）（1）。单晶X射线晶体学表明U V中心稳定在被八个铀酰（VI）五边形双锥体中心包围的四氧核内。铀的氧化态由光谱数据和磁化率测量证实。电子光谱学和理论证实了U V物种可以作为电子给体，因此有助于1是一种类型的半导体。在所有报道的辐射探测半导体材料中，有效原子序数最大，研究了X射线激发下的电荷传输特性和光电导率：1：大开-关比为500，电荷迁移率寿命乘积为2.3×10 -4 厘米2 V -1以及23.4μCGy空气-1 cm -2的高检测灵敏度。
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