IF 5.9 4区化学

结构化学 Pub Date : 2024-06-09 DOI: 10.1016/j.cjsc.2024.100368

引用次数: 0

Structure design of lead-free chiral-polar perovskites for sensitive self-powered X-ray detection 用于灵敏自供电 X 射线探测的无铅手性极性包光体的结构设计

IF 2.2 4区化学

结构化学 Pub Date : 2024-06-01 DOI: 10.1016/j.cjsc.2024.100256

Xin Dong , Tianqi Chen , Jing Liang , Lei Wang , Huajie Wu , Zhijin Xu , Junhua Luo , Li-Na Li

{"title":"Structure design of lead-free chiral-polar perovskites for sensitive self-powered X-ray detection","authors":"Xin Dong , Tianqi Chen , Jing Liang , Lei Wang , Huajie Wu , Zhijin Xu , Junhua Luo , Li-Na Li","doi":"10.1016/j.cjsc.2024.100256","DOIUrl":"10.1016/j.cjsc.2024.100256","url":null,"abstract":"<div>Metal halide perovskites have made significant progress in X-ray detection owing to their exceptional optoelectronic 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-methylpiperazinium), 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 μC 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.</div>","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"43 6","pages":"Article 100256"},"PeriodicalIF":2.2,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140056482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Boosting the self-trapped exciton emission in vacancy-ordered double perovskites via supramolecular assembly 通过超分子组装促进空位有序双包晶石中的自阱激子发射

IF 2.2 4区化学

结构化学 Pub Date : 2024-06-01 DOI: 10.1016/j.cjsc.2024.100306

Xingwen Cheng, Haoran Ren, Jiangshan Luo

引用次数: 0

Vibronic coupling effect on intersystem crossing rates of TADF emitters 振动耦合对 TADF 发射器系统间穿越率的影响

IF 2.2 4区化学

结构化学 Pub Date : 2024-06-01 DOI: 10.1016/j.cjsc.2024.100278

Xin Huang, Yi Zhao, Wanzhen Liang

引用次数: 0

Three types of promising functional building units for designing metal halide nonlinear optical crystals 用于设计金属卤化物非线性光学晶体的三种前景看好的功能构建单元

IF 2.2 4区化学

结构化学 Pub Date : 2024-06-01 DOI: 10.1016/j.cjsc.2024.100291

Jiajing Wu , Ru-Ling Tang , Sheng-Ping Guo

引用次数: 0

An efficient strategy enabling solution processable thermally activated delayed fluorescence emitter with high horizontal dipole orientation 实现高水平偶极定向的可溶液加工热激活延迟荧光发射器的高效策略

IF 2.2 4区化学

结构化学 Pub Date : 2024-06-01 DOI: 10.1016/j.cjsc.2024.100270

Zheng Zhao, Ben Zhong Tang

引用次数: 0

Layered (C5H6ON)2[Sb2O(C2O4)3] with a large birefringence derived from the uniform arrangement of π-conjugated units 层状 (C5H6ON)2[Sb2O(C2O4)3]，π 共轭单元的均匀排列产生了很大的双折射性

IF 2.2 4区化学

结构化学 Pub Date : 2024-06-01 DOI: 10.1016/j.cjsc.2024.100304

Dong-Xue Jiao , Hui-Li Zhang , Chao He , Si-Yu Chen , Ke Wang , Xiao-Han Zhang , Li Wei , Qi Wei

{"title":"Layered (C5H6ON)2[Sb2O(C2O4)3] with a large birefringence derived from the uniform arrangement of π-conjugated units","authors":"Dong-Xue Jiao , Hui-Li Zhang , Chao He , Si-Yu Chen , Ke Wang , Xiao-Han Zhang , Li Wei , Qi Wei","doi":"10.1016/j.cjsc.2024.100304","DOIUrl":"10.1016/j.cjsc.2024.100304","url":null,"abstract":"<div>An organic-inorganic hybrid antimony(III) oxalate (C5H6ON)2[Sb2O(C2O4)3] has been successfully obtained by simultaneous combination of π-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.</div>","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"43 6","pages":"Article 100304"},"PeriodicalIF":2.2,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140609577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

New zeolites with extra-stable extra-large-pore 具有超稳定超大孔隙的新型沸石

IF 2.2 4区化学

结构化学 Pub Date : 2024-06-01 DOI: 10.1016/j.cjsc.2024.100310

Qinming Wu , Xiangju Meng

引用次数: 0

Selective oxidation using in-situ generated hydrogen peroxide over titanosilicates 在钛硅酸盐上使用原位生成的过氧化氢进行选择性氧化

IF 2.2 4区化学

结构化学 Pub Date : 2024-06-01 DOI: 10.1016/j.cjsc.2024.100298

Zhipeng Wan , Hao Xu , Peng Wu

引用次数: 0

Structural phase transition in a new organic-inorganic hybrid post-perovskite: (N,N-dimethylpyrrolidinium)[Mn(N(CN)2)3] 一种新型有机-无机混合后超视晶石的结构相变：(N,N-二甲基吡咯烷鎓)[Mn(N(CN)2)3]

IF 2.2 4区化学

结构化学 Pub Date : 2024-06-01 DOI: 10.1016/j.cjsc.2024.100257

Le Ye, Wei-Xiong Zhang

{"title":"Structural phase transition in a new organic-inorganic hybrid post-perovskite: (N,N-dimethylpyrrolidinium)[Mn(N(CN)2)3]","authors":"Le Ye, Wei-Xiong Zhang","doi":"10.1016/j.cjsc.2024.100257","DOIUrl":"10.1016/j.cjsc.2024.100257","url":null,"abstract":"<div>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 recognized 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.</div>","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"43 6","pages":"Article 100257"},"PeriodicalIF":2.2,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140056486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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