Abstract

Single crystals of a bismuth-based coordination polymer (CP) with carboxyl-thiol ligands, [Bi(C₈H₂O₄S₂) (C₂H₈N)]_n (Bi-DSBDC-DMA, DMBDC = 2,5-disulfur-1,4-dicarboxylate, DMA = dimethylamine), have been successfully synthesized. X-ray diffraction analysis reveals that Bi-DSBDC-DMA possesses a layered structure, with two-dimensional (2D) Bi-DSBDC networks alternating with layers composed of dimethylamine ions. This material demonstrates semiconducting properties, featuring an optical bandgap of 2.2 eV and an electrical conductivity of 2 × 10⁻⁸ S/cm. Furthermore, electrodes based on this material exhibit a capacity of 250 mAh/g after 200 cycles for lithium-ion storage.

中文翻译：

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具有二维共价铋有机网络的层状配位聚合物：半导体和锂离子存储

摘要

具有羧基硫醇配体的铋基配位聚合物（CP）的单晶，[Bi(C ₈ H ₂ O ₄ S ₂ ) (C ₂ H ₈ N)] _n (Bi-DSBDC-DMA，DMBDC = 2， 5-二硫-1,4-二羧酸酯（DMA=二甲胺）已成功合成。X 射线衍射分析表明 Bi-DSBDC-DMA 具有层状结构，二维 (2D) Bi-DSBDC 网络与二甲胺离子组成的层交替。该材料具有半导体特性，光学带隙为2.2 eV，电导率为2 × 10 ^-8 S/cm。此外，基于该材料的电极在200次锂离子存储循环后表现出250mAh/g的容量。