Science China Chemistry最新文献_第7页

Phytic acid dipotassium as a hole transport layer for stable tin halide perovskite solar cells with tailored interfacial chemical interaction 植酸二钾作为具有定制界面化学相互作用的稳定卤化锡钙钛矿太阳能电池的空穴传输层

IF 9.7 1区化学

Science China Chemistry Pub Date : 2025-05-27 DOI: 10.1007/s11426-024-2657-8

Junjie Huang, Muhammad Abdel-Shakour, Shiwei Zhang, Yongle Pan, Xiaofang Wei, Tianhua Liu, Hongbin Xiao, Junfang Wang, Xiangyue Meng

{"title":"Phytic acid dipotassium as a hole transport layer for stable tin halide perovskite solar cells with tailored interfacial chemical interaction","authors":"Junjie Huang, Muhammad Abdel-Shakour, Shiwei Zhang, Yongle Pan, Xiaofang Wei, Tianhua Liu, Hongbin Xiao, Junfang Wang, Xiangyue Meng","doi":"10.1007/s11426-024-2657-8","DOIUrl":"10.1007/s11426-024-2657-8","url":null,"abstract":"<div><p>Tin halide perovskite (THP) is considered a prominent candidate for lead-free perovskite photovoltaic applications. However, the operational stability and durability of THP devices are severely limited by the weak interactions between the hole transport layer (HTL) and THP. Herein, a novel hole transport material phytic acid dipotassium (PADP) with tailored interfacial chemical interaction has been developed. The abundant -PO(OH)<sub>2</sub> groups in the PADP molecule can strongly interact with perovskite, which is crucial for modulating the perovskite crystallization process to achieve rapid nucleation and slow growth. As confirmed by the <i>in-situ</i> spectral characterization technique, the tailored interaction between PADP and perovskite could reduce the Gibbs free energy for heterogeneous nucleation and increase the activation energy of perovskite crystallization, leading to high-quality THP films on the PADP HTL. Moreover, the most significant result of the tailored interaction between PADP and perovskite was the void-free interface and the formation of two-dimensional perovskite at the buried interface between PADP and perovskites, which suppressed the ion migration with improved device stability. Consequently, the tin perovskite solar cell based on PADP with an efficiency of 12.45% achieved remarkable stability, retaining 90% of initial efficiency after continuous light illumination for 2000 h at the maximum power point.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"68 9","pages":"4468 - 4477"},"PeriodicalIF":9.7,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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A straightforward organic complexation strategy enables precise and efficient oxidation state control of Np 一个直接的有机络合策略，使精确和有效的氧化态控制Np

IF 9.7 1区化学

Science China Chemistry Pub Date : 2025-05-26 DOI: 10.1007/s11426-025-2642-7

Huaixin Hao, Yaoyang Liu, Xue Dong, Yuxiao Guo, Bin Li, Shuang Liu, Chao Xu, Jing Chen, Zhipeng Wang

{"title":"A straightforward organic complexation strategy enables precise and efficient oxidation state control of Np","authors":"Huaixin Hao, Yaoyang Liu, Xue Dong, Yuxiao Guo, Bin Li, Shuang Liu, Chao Xu, Jing Chen, Zhipeng Wang","doi":"10.1007/s11426-025-2642-7","DOIUrl":"10.1007/s11426-025-2642-7","url":null,"abstract":"<div><p>The recovery of neptunium (Np) from nuclear waste is of paramount importance for mitigating long-term environmental radiotoxicity. However, this endeavor is significantly hindered by the intricate redox chemistry of Np, which necessitates precise control over its oxidation states. Here we present a straightforward and efficient methodology for the quantitative conversion of Np(V) to Np(IV) under catalysis-free and mild conditions, leveraging organic complexation with an array of widely employed tridentate O-donor ligands: <i>N,N,N</i>’,<i>N</i>’-tetramethyl diglycolamide (TMDGA), <i>N,N</i>-dimethyl diglycolamide (DMDGA), and diglycol acid (DGA). Compared to the “free” Np ion, the reduction efficiency of Np(V) unprecedentedly boosts more than 300 times in the case of complexing with TMDGA, thereby opening up a new path to control the oxidation state of Np and supporting the crucial task of Np recovering in spent nuclear fuel reprocessing.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"68 7","pages":"3071 - 3077"},"PeriodicalIF":9.7,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Harnessing light for propane dehydrogenation: a single-atom catalyst milestone achieved under mild conditions 利用光进行丙烷脱氢：在温和条件下实现的单原子催化剂里程碑

IF 9.7 1区化学

Science China Chemistry Pub Date : 2025-05-23 DOI: 10.1007/s11426-025-2701-1

Jie Chen, Yaopu Yue, Wengang Liu

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Air-stable radical porous hydrogen-bonded organic frameworks 空气稳定自由基多孔氢键有机骨架

IF 9.7 1区化学

Science China Chemistry Pub Date : 2025-05-23 DOI: 10.1007/s11426-025-2700-7

Hao Chen, Lingshan Gong, Yingxiang Ye

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Bond metathesis reactions between a cyclic (alkyl)(amino)aluminum hydride and boranes 环（烷基）（氨基）氢化铝与硼烷之间的键复合反应

IF 9.7 1区化学

Science China Chemistry Pub Date : 2025-05-23 DOI: 10.1007/s11426-024-2568-9

Kaifeng Cai, Penglong Wang, Chenting Yan, Rei Kinjo

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Photothermal conversion with Au nanoclusters encapsulated in a superphane cage: a breakthrough in stability and efficiency 光热转换中包裹在超玻璃笼中的金纳米团簇：稳定性和效率的突破

IF 9.7 1区化学

Science China Chemistry Pub Date : 2025-05-23 DOI: 10.1007/s11426-025-2734-6

Shuo Guo, Jia-Rui Wu

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Investigation into the molecular engineering of xanthene-derived AIE tunable fluorescent switching dyes: experimental and theoretical approaches 杂蒽衍生AIE可调荧光开关染料的分子工程研究：实验和理论方法

IF 9.7 1区化学

Science China Chemistry Pub Date : 2025-05-22 DOI: 10.1007/s11426-024-2664-3

Rui Guo, Wenhui Song, Jiyoung Yoo, Changyu Yoon, Yinhu Ai, Yan Yin, Tony D. James, Jong Seung Kim, Weiying Lin

{"title":"Investigation into the molecular engineering of xanthene-derived AIE tunable fluorescent switching dyes: experimental and theoretical approaches","authors":"Rui Guo, Wenhui Song, Jiyoung Yoo, Changyu Yoon, Yinhu Ai, Yan Yin, Tony D. James, Jong Seung Kim, Weiying Lin","doi":"10.1007/s11426-024-2664-3","DOIUrl":"10.1007/s11426-024-2664-3","url":null,"abstract":"<div><p>Dyes endowed with aggregation-induced emission (AIE) properties represent a very significant class of chromophores. Nonetheless, current AIE dyes have yet to possess a readily tunable fluorescence switching mechanism. Here, we delineate a structurally distinctive family of dyes, termed <b>XD</b> dyes, which exhibit AIE attributes. Notably, the novel <b>XD</b> dyes feature an intrinsic helical cyclization as a tunable fluorescence switch, conferring them with an advantage over conventional AIE fluorophores. Initially, the fluorescence of the <b>XD</b> dyes in water-tetrahydrofuran mixtures was investigated through spectral analysis as the volume of the aqueous component increased. Subsequently, particle size analysis, in conjunction with scanning electron microscopy (SEM), was employed to substantiate the aggregation propensity of the <b>XD</b> dyes. Of particular significance, <b>XD-4</b> was observed for the first time to exhibit pronounced solid-state fluorescence, thereby corroborating the <b>XD</b> dyes’ capacity for robust fluorescence emission in the aggregated state. Moreover, alterations in optical properties and aggregation behavior of the <b>XD</b> dyes were elucidated theoretically through quantum chemical computations and molecular dynamics simulations. Critically, the calculated reorganization energy of <b>XD-4</b> was reduced in an aqueous medium was reduced compared to the gas phase, providing further confirmation of its AIE nature. The unique AIE characteristics of the <b>XD</b> dyes were validated through the integration of experimental data and theoretical insights, offering novel perspectives for the advancement of high-performance fluorescent dyes and probes.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"68 8","pages":"3675 - 3688"},"PeriodicalIF":9.7,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11426-024-2664-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Nano-islands isolated ultrafine nanoparticles as sintering-resistant catalysts for methane dry reforming 纳米岛分离的超细纳米颗粒作为甲烷干重整的抗烧结催化剂

IF 9.7 1区化学

Science China Chemistry Pub Date : 2025-05-13 DOI: 10.1007/s11426-025-2663-2

Ruixuan Qin, Nanfeng Zheng

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Direct regeneration of lithium-ion batteries as a promising method 锂离子电池的直接再生是一种很有前途的方法

IF 9.7 1区化学

Science China Chemistry Pub Date : 2025-05-12 DOI: 10.1007/s11426-025-2702-6

Guangyao Xiang, Zhi Zhu, Yuping Wu

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Asymmetric Suzuki-Miyaura coupling for the catalytic enantioselective synthesis of planar chiral pillar[5]arenes 不对称Suzuki-Miyaura偶联催化对映选择性合成平面手性柱[5]芳烃

IF 9.7 1区化学

Science China Chemistry Pub Date : 2025-05-09 DOI: 10.1007/s11426-025-2636-1

Xiao-Hua Zhou, Xinyi Song, Yu-Meng Lin, Xue Li, Yi-Ru Song, Lin-Tao Bao, Wei-Tao Xu, Xu-Qing Wang, Hai-Bo Yang, Wei Wang

{"title":"Asymmetric Suzuki-Miyaura coupling for the catalytic enantioselective synthesis of planar chiral pillar[5]arenes","authors":"Xiao-Hua Zhou, Xinyi Song, Yu-Meng Lin, Xue Li, Yi-Ru Song, Lin-Tao Bao, Wei-Tao Xu, Xu-Qing Wang, Hai-Bo Yang, Wei Wang","doi":"10.1007/s11426-025-2636-1","DOIUrl":"10.1007/s11426-025-2636-1","url":null,"abstract":"<div><p>Asymmetric Suzuki-Miyaura couplings have proven to be a powerful method towards the efficient and stereoselective construction of diverse stereogenic elements. However, the construction of planar chirality with such methodology has been rarely explored. Here we demonstrate the enantioselective synthesis of planar chiral pillar[5]arenes via asymmetric Suzuki-Miyaura coupling, leading to the successful synthesis of a wide range of planar chiral pillar[5]arenes with wide diversity in both structure and functionality. In addition, facile derivatizations of the resultant planar chiral pillar[5]arenes further enable the synthesis of a giant “ring on ring” macrocycle as an excellent circularly polarized luminescence (CPL) emitter with a dissymmetry factor (<i>g</i><sub>lum</sub>) of −0.021, highlighting the great potential of such synthetic methodology for the creation of novel chiral luminescent materials. This work not only extends the asymmetric cross-coupling methodologies for chiral synthesis but also contributes promising chiral building blocks for widespread applications.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"68 10","pages":"4940 - 4947"},"PeriodicalIF":9.7,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145284394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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