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Red-Light-Driven CO2 Reduction in Aqueous Solution Using CdSe Quantum Dots and Cobalt Molecular Catalysts
IF 11.2 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-02-04 DOI: 10.31635/ccschem.024.202405179
Kai Guo, Zuting Wei, Bixian Chen, Shuang Yang, Jingxiang Lei, Huiqing Yuan & Zhiji Han1MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, IGCME, Sun Yat-sen University, Guangzhou 5102752School of Chemistry and Environment, Jiaying University, Meizhou, Guangdong 5140153College of Light Chemical Industry and Materials Engineering, Shunde Polytechnic, Foshan 528333
CCS Chemistry, Ahead of Print.
The development of inexpensive artificial photosynthetic (AP) systems, utilizing low-energy sunlight for CO2reduction remains a significant challenge. Here, we report a red-light-driven CO2reduction system with pyridinethiolate-capped CdSe quantum dots (...
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引用次数: 0
Direct α-Cross-Coupling of Benzylamines with Bulky Alkyl Iodides Enabled by Radical Carbonyl Catalysis
IF 11.2 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-02-04 DOI: 10.31635/ccschem.025.202405131
Chengkang Hou, Longjie Huang, Lei Wang, Siqi Liu, Guoqing Zhao, Kuiling Ding & Baoguo Zhao1The Education Ministry Key Lab of Resource Chemistry, Shanghai Frontiers Science Center of Biomimetic Catalysis, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 2002342The Frontiers Science Center for Transformative Molecules and the School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240
CCS Chemistry, Ahead of Print.
α-Amino radicals are highly reactive and synthetically valuable species. However, their instability and short lifetime limit their applications in organic synthesis. This work has demonstrated a catalytic strategy for in situ generation of persistent α-...
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引用次数: 0
Modulating Static and Dynamic Magnetizations of Ytterbium(III) Coordination Polymers by Light-Induced Radicals 光诱导自由基调制镱配位聚合物的静态和动态磁化
IF 11.2 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-01-03 DOI: 10.31635/ccschem.024.202404999
Xiaoshuang Gou, Yuewei Wu, Hanqi Wen, Liang Li, Wenlong Lan, Ning Liu, Shiqi Zhang, Liviu Ungur, Peng Cheng & Wei Shi1Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (MOE) and State Key Laboratory of Advanced Chemical Power Sources, College of Chemistry, Nankai University, Tianjin 3000712Department of Chemistry, National University of Singapore, Singapore 117543
CCS Chemistry, Ahead of Print.
Light-induced transformation from diamagnetic ligand to paramagnetic radical offers a unique approach to modulating the magnetization dynamics of magnetic compounds. In this study, we present a two-dimensional Yb(III) coordination polymer1and its Y(III)-...
CCS Chemistry, Ahead of Print.光诱导二磁配体向顺磁基的转化为调节磁性化合物的磁化动力学提供了一种独特的方法。在这项研究中,我们展示了一种二维镱(III)配位聚合物1 及其镱(III)-...
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引用次数: 0
Selective Dearomatic Deuteration of (Het)arenes via Electrophotocatalysis 光电催化(Het)芳烃选择性脱芳氘化
IF 11.2 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-01-03 DOI: 10.31635/ccschem.024.202405016
Ya-Jing Chen, Dong Wei, Cheng Wang, Shu-Lin Meng, Bin Chen, Chen-Ho Tung & Li-Zhu Wu1Key Laboratory of Photochemical Conversion and Optoelectronic Materials, New Cornerstone Science Laboratory, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences, Beijing 1001902School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049
CCS Chemistry, Ahead of Print.
Developing green and practicald-labeling techniques is valuable and in high demand for medical chemistry, mechanistic studies, and materials science. Although dearomatic deuteration of simple aromatic systems represents an attractive protocol to accessd-...
CCS化学,领先于印刷。开发绿色和实用的标签技术在医学化学、机械研究和材料科学中具有很高的价值和需求。虽然简单芳烃体系的脱芳氘化是一种有吸引力的方法,但…
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引用次数: 0
A Supramolecularly Activatable Photosensitizer: Controllable Cyanine J-Aggregation for Efficient Photodynamic Therapy 一种超分子活化光敏剂:用于高效光动力治疗的可控菁氨酸j聚集
IF 11.2 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2025-01-03 DOI: 10.31635/ccschem.024.202405042
He Ma, Weiquan Xu, Xingchen Tang, Yushen Kang, Jiang-Fei Xu & Xi ZhangKey Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084
CCS Chemistry, Ahead of Print.
An activatable photosensitizer that could induce phototoxicity only in target sites is highly demanded to overcome the potential off-target toxicity in photodynamic therapy. It is of great significance to design tailored photosensitizers with a new caging ...
CCS Chemistry, Ahead of Print.要克服光动力疗法中潜在的脱靶毒性,需要一种仅能在靶点诱导光毒性的可激活光敏剂。设计具有新笼型结构的定制光敏剂具有重要意义。
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引用次数: 0
Enantioselective Synthesis of Chiral Isoindolines via Palladium-Catalyzed Asymmetric Allylic C–H Amination 通过钯催化不对称烯丙基 C-H 氨基化不对称合成手性异吲哚胺
IF 11.2 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-11-01 DOI: 10.31635/ccschem.024.202404613
CCS Chemistry, Ahead of Print.
CCS Chemistry, Ahead of Print.
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引用次数: 0
Divide and Conquer: Desymmetrization Separates Charge and Mass Transport in Porphyrinic Covalent Organic Frameworks for Artificial Photosynthesis 分而治之:非对称化分离卟啉共价有机框架中的电荷和质量传输,实现人工光合作用
IF 11.2 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-11-01 DOI: 10.31635/ccschem.024.202404867
CCS Chemistry, Ahead of Print.
CCS Chemistry, Ahead of Print.
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引用次数: 0
Author Spotlight 作者聚焦
IF 11.2 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-11-01 DOI: 10.31635/ccschem.024.202401017ed2
CCS Chemistry, Volume 6, Issue 11, Page 2623-2626, November 2024.
CCS Chemistry》,第 6 卷,第 11 期,第 2623-2626 页,2024 年 11 月。
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引用次数: 0
Toward the Synthesis of Pentaheptite Substructure: The Cyclopenta[ef]heptalene to Phenanthrene Rearrangement 五庚烯结构的合成:环戊并[ef]庚二烯到菲的重排
IF 11.2 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-10-30 DOI: 10.31635/ccschem.024.202404765
Chang Wang, Chenyu Hu, Weize Wang, Jun Yang, Junzhi Liu

Novel carbon allotropes have long been pursued in synthetic chemistry and materials science, and graphene has been the most well-investigated carbon nanostructure in the past decade. However, an analogous carbon pentaheptite with equal numbers of pentagons and heptagons has not yet been synthesized because designing and synthesizing nonhexagon motifs along two dimensions is challenging. During the synthesis of a pentaheptite substructure (or named nanopentaheptite, NPH), which contain four pentagon-heptagon pairs and one heptalene unit, unexpected cyclopenta[ef]heptalene-into-phenanthrene rearrangements were observed for the first time, yielding two novel compounds (NPH-R1 and NPH-R2). Experimental and theoretical results demonstrated that the NPH series exhibits narrower energy gaps than that of their hexagonal analog with similar size (e.g., hexa-peri-hexabenzocoronene, HBC). Our work reported herein, based on the azulene chemistry, provides new insights into the preparation of novel carbon allotrope pentaheptite nanostructures.

长期以来,合成化学和材料科学一直在研究新型碳同素异形体,而石墨烯是过去十年中研究最为深入的碳纳米结构。然而,由于在两个维度上设计和合成非六边形图案具有挑战性,人们尚未合成出具有相同数量五边形和七边形的类似碳五庚烷。在合成含有四对五角庚方和一个庚烯单元的五庚方亚结构(或命名为纳米五庚方,NPH)的过程中,首次观察到了意想不到的环戊并[ef]庚烯-转化为菲的重排,并产生了两种新型化合物(NPH-R1 和 NPH-R2)。实验和理论结果表明,NPH 系列比尺寸相似的六方类似物(如六全六苯并硼烯,HBC)具有更窄的能隙。我们在此报告的工作基于天青石化学,为制备新型碳异构体五庚烯纳米结构提供了新的见解。
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引用次数: 0
Universal Visible-Light Photoiniferter Polymerization 通用可见光光增塑剂聚合
IF 11.2 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-10-30 DOI: 10.31635/ccschem.024.202404894
Shuangqi Lian, Steven P. Armes, Zesheng An

Currently, there is no versatile method for the synthesis of high molecular weight (MW) polymers by controlled radical polymerization from a broad range of monomers using a single agent. Herein, we report a universal photoiniferter reversible addition-fragmentation chain transfer (RAFT) polymerization formulation using a suitable pyrazole-based chain transfer agent (CTA) combined with blue light irradiation. Well-controlled polymerization was observed for methyl methacrylate (MMA), methyl acrylate (MA), N,N-dimethylacrylamide (DMA), and N-vinylpyrrolidone (NVP). High polymerization rates were achieved, attributed to the high molar absorption coefficient of the pyrazole-based CTA and its rapid rate of photolysis. Poly(methyl acrylate) (PMA) and poly(N,N-dimethylacrylamide) (PDMA) syntheses yielded low-dispersity ultrahigh MW chains (>106 g mol−1, Р< 1.3). High end-group fidelity enabled the preparation of well-defined high MW diblock copolymers comprising both more activated and less activated monomers, including PDMA-b-PNVP and PMA-b-PNVP. Such syntheses demonstrated that visible light-mediated photoiniferter RAFT polymerization conducted using pyrazole-based CTAs was both highly efficient and versatile.

目前,还没有一种通用的方法可以使用单一药剂,通过受控自由基聚合从多种单体合成高分子量(MW)聚合物。在此,我们报告了一种通用的光iferter 可逆加成-碎片链转移(RAFT)聚合配方,该配方使用了一种合适的吡唑基链转移剂(CTA),并结合了蓝光照射。观察到甲基丙烯酸甲酯(MMA)、丙烯酸甲酯(MA)、N,N-二甲基丙烯酰胺(DMA)和 N-乙烯基吡咯烷酮(NVP)的聚合过程控制良好。由于吡唑基 CTA 的摩尔吸收系数高、光解速度快,因此聚合速率很高。聚(丙烯酸甲酯)(PMA)和聚(N,N-二甲基丙烯酰胺)(PDMA)的合成产生了低分散性的超高分子量链(>106 g mol-1, Ð<1.3)。由于端基保真度高,因此能够制备出定义明确的高分子量二嵌段共聚物,包括 PDMA-b-PNVP 和 PMA-b-PNVP,其中既有活化程度较高的单体,也有活化程度较低的单体。这些合成表明,使用吡唑基 CTA 进行可见光介导的光iferter RAFT 聚合既高效又通用。
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CCS Chemistry
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