期刊,结构化学 2024年卷6期_国家学术搜索

期刊信息/Journal information

结构化学

主　　编：吴新涛

出版周期：月刊

国际刊号：0254-5861

电子邮箱：jghx@fjirsm.ac.cn

电　　话：0591-83704886，83704896

邮政编码：350002

地　　址：福建省福州市杨桥西路155号

结构化学/Journal Chinese Journal of Structural ChemistryCSCD北大核心CSTPCDSCI

查看更多>>本刊是中国科学院主管，中国化学会、中国科学院福建物质结构研究所主办的学术性期刊。2006年改为纯英文版“Chinese Journal of Structural Chiemistry”。主要报道晶体学，量子化学，药物、材料和催化剂等领域物质性能与结构关系的文章。报道的内容涉及有机化学、无机化学、合成化学、结构化学、材料科学、药物化学、晶体学、理论化学等学科中的微观物质结构与性能关系的研究成果或阶段性成果。与此同时本刊也报道用谱学等物理方法解析物质结构、阐述物质结构与性能关系的论文。《结构化学》是中国自然科学核心期刊，中国科技论文引文数据库来源及统计源期刊。

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Hybrid perovskite shows temperature-dependent photoluminescence and dielectric response triggered by halogen substitution

Xiao-Tong SunHao-Fei NiYi ZhangDa-Wei Fu...

28-33页

查看更多>>摘要：Materials exhibiting dielectric switching response and photoluminescence(PL)are promising for sensors and information storage.In previous research,we synthesized a series of materials with red or green PL and dielectric switching capabilities by incorporating luminescent metal halides into organic ammonium compounds.However,effective modification to synthesize organic-inorganic hybrid materials with dielectric switching response and orange PL continues to be a challenge in the respective fields.Orange PL materials are valuable for switching and sensors,and most orange light sources are derived from rare earth elements,making them harder to obtain.We have successfully synthesized two organic-inorganic hybrid materials([CMPD]PbBr3(1)and[BMPD]PbBr3(2),CMPD=N-ClCH2-N-methylpiperidine,BMPD=N-BrCH2-N-methylpiperidine)that exhibit both orange PL and dielectric switching response.When Cl in compound 1 is substituted by Br in compound 2,the phase transition temperature of the compound is elevated by 45 K.These compounds exhibit captivating orange light emission when exposed to ultraviolet lamps.This research provides insights into exploring multifunctional materials with orange PL and dielectric switching response and provides proof for halogen substitution strategies to design materials with higher phase transition temperatures.

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Structure design of lead-free chiral-polar perovskites for sensitive self-powered X-ray detection

Xin DongTianqi ChenJing LiangLei Wang...

34-39页

查看更多>>摘要：Metal halide perovskites have made significant progress in X-ray detection owing to their exceptional optoelec-tronic properties.However,most of these materials suffer from toxic element lead and require for high operating voltages.Hence,it is imperative to explore environmentally friendly perovskite crystals without external bias for X-ray detection.Herein,we strategically introduce chiral cations to synthesize a pair of lead-free chiral-polar hybrid perovskites(S-MPz)6Bi3I21·6H2O and(R-MPz)6Bi3i21·6H2O(1S and 1R,S/R-MPz=S/R-2-methylpipera-zinium),which exhibit strong circular dichroism(CD)signals with an anisotropic g-factor reaching approximately 0.017.Significantly,the chiral-polar feature gives rise to distinctive spontaneous polarization,which leads to a photovoltage of 1.1 V under X-ray illumination,endowing self-powered detection capabilities for X-ray.Further exploration of X-ray devices based on 1R single crystal(SC)demonstrates a high sensitivity of 5.2 pC Gyair-1 cm-2 at zero bias.This study realizes passive X-ray detection depending on the intrinsic spontaneous polarization induced built-in electric field of chiral-polar perovskite,providing an effective approach to the chemical design of desired materials for high-performance"green"self-powered radiation detection.

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Structural phase transition in a new organic-inorganic hybrid post-perovskite:(N,N-dimethylpyrrolidinium)[Mn(N(CN)2)3]

Le YeWei-Xiong Zhang

40-44页

查看更多>>摘要：In the realm of molecular phase transition research,particularly for applications in sensors,data storage and switching technologies,the role of organic-inorganic hybrid perovskite materials has been increasingly recog-nized for their significant potential.Nevertheless,hybrid post-perovskites,as a critical subclass of perovskites,have not been thoroughly studied and mainly limit in the instances based on polyatomic bridging agents like dicyanamide(dca-)and non-cyclic organic cations.Herein,a polar cyclic quaternary ammonium cation,N,N-dimethylpyrrolidinium(DMP+),was used to assemble a new hybrid post-perovskite,(DMP)[Mn(dca)3](1),which undergoes a phase transition from orthorhombic Bmmb to monoclinic P21/n space group at 249 K.By employing multiple techniques such as differential scanning calorimetry,variable-temperature single-crystal X-ray analysis,dielectric measurements,and Hirshfeld surface analysis,we disclosed the role of polar cyclic quaternary ammonium DMP+in elevating the phase-transition temperature by 48 K,generating significant dielectric switching effect and facilitating interlayer sliding of inorganic framework.

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(Benzimidazolium)2GeI4:A layered two-dimensional perovskite with dielectric switching and broadband near-infrared photoluminescence

Xuan ZhuLin ZhouXiao-Yun HuangYan-Ling Luo...

45-49页

查看更多>>摘要：Two-dimensional(2D)lead halide perovskites have attracted tremendous attention due to their outstanding physical properties.However,the presence of toxic lead is a major problem for large-scale applications.Here,we report the synthesis,phase transition,dielectric and photoluminescence(PL)properties of a lead-free 2D Ge-based perovskite(BIM)2GeI4(BIM=benzimidazolium)which experiences a phase transition at 405 K accompanied by an order-disorder change of organic spacer.Moreover,the step-like dielectric transition near the phase transition temperature makes it suitable for dielectric switching.Meanwhile,(BIM)2GeI4 has a direct bandgap of 2.23 eV and broadband emission from 550 to 1000 nm,implying its unique optical property for potential near-infrared lighting and displaying.This work provides a fresh example for the development of lead-free 2D Ge-based perovskite with potential applications in the fields of optoelectronics and high temperature dielectric switching.

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Layered(C5H6ON)2[Sb2O(C2O4)3]with a large birefringence derived from the uniform arrangement of π-conjugated units

Dong-Xue JiaoHui-Li ZhangChao HeSi-Yu Chen...

50-55页

查看更多>>摘要：An organic-inorganic hybrid antimony(Ⅲ)oxalate(C5H6ON)2[Sb2O(C2O4)3]has been successfully obtained by simultaneous combination of a-conjugated 4-hydroxypyridine and(C2O4)2-group with stereochemical active Sb(Ⅲ)cation.The compound features a layered structure,and the equatorial planes of SbO6 units,π-conjugated(C2O4)2-and(C5H6ON)+groups are closer to a planar arrangement,representing strong structural anisotropy that favors a large birefringence.As expected,(C5H6ON)2[Sb2O(C2O4)3]exhibits a large birefringence of 0.279 at 546 nm.Structural and theoretical analyses indicate that the combination of multiple π-conjugated units is a feasible approach for designing and exploring new superior birefringent materials.

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