Precision Chemistry最新文献

Precision Chemistry for Two-Dimensional Materials 二维材料的精密化学

Precision Chemistry Pub Date : 2024-08-26 DOI: 10.1021/prechem.4c0006510.1021/prechem.4c00065

Xiangfeng Duan*,

引用次数: 0

Quadruple[6]Helicene Featuring Pyrene Core: Unraveling Contorted Aromatic Core with Larger Effective Conjugation 以芘为核心的四[6]联苯：以更大的有效共轭解开扭曲的芳香族核心

Precision Chemistry Pub Date : 2024-08-13 DOI: 10.1021/prechem.4c0003810.1021/prechem.4c00038

Christopher Wallerius, Otgonbayar Erdene-Ochir, Eva Van Doeselar, Ronald Alle, Anh Tu Nguyen, Marvin F. Schumacher, Arne Lützen, Klaus Meerholz and Sai Ho Pun*,

{"title":"Quadruple[6]Helicene Featuring Pyrene Core: Unraveling Contorted Aromatic Core with Larger Effective Conjugation","authors":"Christopher Wallerius, Otgonbayar Erdene-Ochir, Eva Van Doeselar, Ronald Alle, Anh Tu Nguyen, Marvin F. Schumacher, Arne Lützen, Klaus Meerholz and Sai Ho Pun*, ","doi":"10.1021/prechem.4c0003810.1021/prechem.4c00038","DOIUrl":"https://doi.org/10.1021/prechem.4c00038https://doi.org/10.1021/prechem.4c00038","url":null,"abstract":"Multiple helicenes display distinct aromatic cores characterized by highly twisted rings that are shared or fused with constituent helicene moieties. Diversifying these aromatic cores unlocks avenues for creating multiple helicenes with distinct properties and topologies. Herein we report the synthesis of a quadruple[6]helicene featuring pyrene as the aromatic core. The synthesis involved key steps of the annulative π-extension reaction and Scholl reaction. By extending multiple helicenes along the axial direction, the degree of contortion of the aromatic core can be controlled from nearly flat to highly twisted. Notably, quadruple[6]helicene exhibits a significant red-shift of 0.49 eV compared to quadruple[4]helicenes, of which the red-shift arises from both π-extension and augmented effective conjugation due to enhanced twisting. Quantum chemical calculations demonstrate that the degree of contortion in the pyrene core adeptly governs the energy levels of the HOMO and LUMO, which offers an alternative strategy beyond mere enlargement of the π backbone. An intriguing serendipitous finding reveals the formation of one-molecule-thick supramolecular homochiral nanosheets through self-interlocking interactions of enantiomers in single crystals, a rare packing motif for multiple helicenes.","PeriodicalId":29793,"journal":{"name":"Precision Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/prechem.4c00038","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142276208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Precision Control of Amphoteric Doping in Cu _x Bi₂Se₃ Nanoplates. Cu x Bi2Se3 纳米板中两性掺杂的精确控制。

Precision Chemistry Pub Date : 2024-08-04 eCollection Date: 2024-08-26 DOI: 10.1021/prechem.4c00046

Huaying Ren, Jingxuan Zhou, Ao Zhang, Zixi Wu, Jin Cai, Xiaoyang Fu, Jingyuan Zhou, Zhong Wan, Boxuan Zhou, Yu Huang, Xiangfeng Duan

{"title":"Precision Control of Amphoteric Doping in Cu x Bi2Se3 Nanoplates.","authors":"Huaying Ren, Jingxuan Zhou, Ao Zhang, Zixi Wu, Jin Cai, Xiaoyang Fu, Jingyuan Zhou, Zhong Wan, Boxuan Zhou, Yu Huang, Xiangfeng Duan","doi":"10.1021/prechem.4c00046","DOIUrl":"10.1021/prechem.4c00046","url":null,"abstract":"Copper-doped Bi2Se3 (Cu x Bi2Se3) is of considerable interest for tailoring its electronic properties and inducing exotic charge correlations while retaining the unique Dirac surface states. However, the copper dopants in Cu x Bi2Se3 display complex electronic behaviors and may function as either electron donors or acceptors depending on their concentration and atomic sites within the Bi2Se3 crystal lattice. Thus, a precise understanding and control of the doping concentration and sites is of both fundamental and practical significance. Herein, we report a solution-based one-pot synthesis of Cu x Bi2Se3 nanoplates with systematically tunable Cu doping concentrations and doping sites. Our studies reveal a gradual evolution from intercalative sites to substitutional sites with increasing Cu concentrations. The Cu atoms at intercalative sites function as electron donors while those at the substitutional sites function as electron acceptors, producing distinct effects on the electronic properties of the resulting materials. We further show that Cu0.18Bi2Se3 exhibits superconducting behavior, which is not present in Bi2Se3, highlighting the essential role of Cu doping in tailoring exotic quantum properties. This study establishes an efficient methodology for precise synthesis of Cu x Bi2Se3 with tailored doping concentrations, doping sites, and electronic properties.","PeriodicalId":29793,"journal":{"name":"Precision Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11351425/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142112793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Precision Control of Amphoteric Doping in CuxBi2Se3 Nanoplates CuxBi2Se3 纳米板中两性掺杂的精确控制

Precision Chemistry Pub Date : 2024-08-04 DOI: 10.1021/prechem.4c0004610.1021/prechem.4c00046

Huaying Ren, Jingxuan Zhou, Ao Zhang, Zixi Wu, Jin Cai, Xiaoyang Fu, Jingyuan Zhou, Zhong Wan, Boxuan Zhou, Yu Huang and Xiangfeng Duan*,

{"title":"Precision Control of Amphoteric Doping in CuxBi2Se3 Nanoplates","authors":"Huaying Ren, Jingxuan Zhou, Ao Zhang, Zixi Wu, Jin Cai, Xiaoyang Fu, Jingyuan Zhou, Zhong Wan, Boxuan Zhou, Yu Huang and Xiangfeng Duan*, ","doi":"10.1021/prechem.4c0004610.1021/prechem.4c00046","DOIUrl":"https://doi.org/10.1021/prechem.4c00046https://doi.org/10.1021/prechem.4c00046","url":null,"abstract":"Copper-doped Bi2Se3 (CuxBi2Se3) is of considerable interest for tailoring its electronic properties and inducing exotic charge correlations while retaining the unique Dirac surface states. However, the copper dopants in CuxBi2Se3 display complex electronic behaviors and may function as either electron donors or acceptors depending on their concentration and atomic sites within the Bi2Se3 crystal lattice. Thus, a precise understanding and control of the doping concentration and sites is of both fundamental and practical significance. Herein, we report a solution-based one-pot synthesis of CuxBi2Se3 nanoplates with systematically tunable Cu doping concentrations and doping sites. Our studies reveal a gradual evolution from intercalative sites to substitutional sites with increasing Cu concentrations. The Cu atoms at intercalative sites function as electron donors while those at the substitutional sites function as electron acceptors, producing distinct effects on the electronic properties of the resulting materials. We further show that Cu0.18Bi2Se3 exhibits superconducting behavior, which is not present in Bi2Se3, highlighting the essential role of Cu doping in tailoring exotic quantum properties. This study establishes an efficient methodology for precise synthesis of CuxBi2Se3 with tailored doping concentrations, doping sites, and electronic properties.","PeriodicalId":29793,"journal":{"name":"Precision Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/prechem.4c00046","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142075377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pd-Catalyzed Stereospecific Glycosyl Cross-Coupling of Reversed Anomeric Stannanes for Modular Synthesis of Nonclassical C-Glycosides 钯催化反向同分异构锡烷的立体特异性糖基交叉偶联用于非经典 C-糖苷的模块化合成

Precision Chemistry Pub Date : 2024-07-21 DOI: 10.1021/prechem.4c00042

Guoqiang Cheng, Bo-Wen Yang, Yang Han, Wei Lin, Siyuan Tao, Yong Nian, Yingzi Li, M. Walczak, Feng Zhu

引用次数: 0

Reducing Energy Costs during Hydrogen Production from Water Electrolysis by Coupling Small Molecule Oxidation: From Molecular Catalysis to Industrial Exploration 通过耦合小分子氧化降低水电解制氢过程中的能源成本：从分子催化到工业探索

Precision Chemistry Pub Date : 2024-07-01 DOI: 10.1021/prechem.4c0002510.1021/prechem.4c00025

Jia Cheng, Yang Xiang, Xun Huang* and Zidong Wei*,

{"title":"Reducing Energy Costs during Hydrogen Production from Water Electrolysis by Coupling Small Molecule Oxidation: From Molecular Catalysis to Industrial Exploration","authors":"Jia Cheng, Yang Xiang, Xun Huang* and Zidong Wei*, ","doi":"10.1021/prechem.4c0002510.1021/prechem.4c00025","DOIUrl":"https://doi.org/10.1021/prechem.4c00025https://doi.org/10.1021/prechem.4c00025","url":null,"abstract":"Hydrogen energy has garnered significant attention in recent years as a solution to address the global energy crisis and environmental pollution. While water electrolysis stands out as the most promising method to produce green hydrogen, the sluggish reaction kinetics of the oxygen evolution reaction (OER) on the anode increases the cost of hydrogen production. One potential solution to this challenge is replace OER with the thermodynamically more favorable oxidation of small molecules, which can efficiently reduce the energy cost while simultaneously yielding high-value chemicals. Up to now, various organic oxidation reactions have been reported to couple with hydrogen evolution, including alcohol oxidation, biomass platform molecule upgrading, and sacrificial reagents oxidation associated with wastewater treatments. This review concentrates on the recent advancements in the mechanism, catalyst, reactor, and process in this field, with a discussion on its prospects for commercialization.","PeriodicalId":29793,"journal":{"name":"Precision Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/prechem.4c00025","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142276267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reducing Energy Costs during Hydrogen Production from Water Electrolysis by Coupling Small Molecule Oxidation: From Molecular Catalysis to Industrial Exploration 通过耦合小分子氧化降低水电解制氢过程中的能源成本：从分子催化到工业探索

Precision Chemistry Pub Date : 2024-07-01 DOI: 10.1021/prechem.4c00025

Jia Cheng, Yang Xiang, Xun Huang, Zidong Wei

引用次数: 0

Porphyrin/Fullerene Porous Molecular Cocrystal Featuring a Robust One-Dimensional Channel 具有稳健一维通道的卟啉/富勒烯多孔分子共晶体

Precision Chemistry Pub Date : 2024-06-12 DOI: 10.1021/prechem.4c00036

Nobuhiro Sato, Ryojun Toyoda, Tetsu Sato, Zi Lang Goo, S. Takaishi, Koki Chida, Takeharu Yoshii, Hirotomo Nishihara, K. Sugimoto, Ryota Sakamoto

引用次数: 0

High-Performance H2 Photosynthesis from Pure Water over Ru–S Charge Transfer Channels 通过 Ru-S 电荷转移通道从纯水中进行高性能 H2 光合作用

Precision Chemistry Pub Date : 2024-06-12 DOI: 10.1021/prechem.4c00035

Huiping Peng, Mingzi Sun, Fei Xue, Xiaozhi Liu, Shangheng Liu, Tang Yang, Lin Sun, Hongbo Geng, Dong Su, Bolong Huang, Yong Xu, Xiaoqing Huang

引用次数: 0

High-Performance H2 Photosynthesis from Pure Water over Ru–S Charge Transfer Channels 通过 Ru-S 电荷转移通道从纯水中进行高性能 H2 光合作用

Precision Chemistry Pub Date : 2024-06-12 DOI: 10.1021/prechem.4c0003510.1021/prechem.4c00035

Huiping Peng, Mingzi Sun, Fei Xue, Xiaozhi Liu, Shangheng Liu, Tang Yang, Lin Sun, Hongbo Geng, Dong Su, Bolong Huang*, Yong Xu* and Xiaoqing Huang*,

{"title":"High-Performance H2 Photosynthesis from Pure Water over Ru–S Charge Transfer Channels","authors":"Huiping Peng, Mingzi Sun, Fei Xue, Xiaozhi Liu, Shangheng Liu, Tang Yang, Lin Sun, Hongbo Geng, Dong Su, Bolong Huang*, Yong Xu* and Xiaoqing Huang*, ","doi":"10.1021/prechem.4c0003510.1021/prechem.4c00035","DOIUrl":"https://doi.org/10.1021/prechem.4c00035https://doi.org/10.1021/prechem.4c00035","url":null,"abstract":"As a versatile energy carrier, H2 is considered as one of the most promising sources of clean energy to tackle the current energy crisis and environmental concerns, which can be produced from photocatalytic water splitting. However, solar-driven photocatalytic H2 production from pure water in the absence of sacrificial reagents remains a great challenge. Herein, we demonstrate that the incorporation of Ru single atoms (SAs) into ZnIn2S4 (Ru-ZIS) can enhance the light absorption, reduce the energy barriers for water dissociation, and construct a channel (Ru–S) for separating photogenerated electron–hole pairs, as a result of a significantly enhanced photocatalytic water splitting process. Impressively, the productivity of H2 reaches 735.2 μmol g–1 h–1 under visible light irradiation in the absence of sacrificial agents. The apparent quantum efficiency (AQE) for H2 evolution reaches 7.5% at 420 nm, with a solar-to-hydrogen (STH) efficiency of 0.58%, which is much higher than the value of natural synthetic plants (∼0.10%). Moreover, Ru-ZIS exhibits steady productivity of H2 even after exposure to ambient conditions for 330 days. This work provides a unique strategy for constructing charge transfer channels to promote the separation of photogenerated electron–hole pairs, which may motivate the fundamental researches on catalyst design for photocatalysis and beyond.","PeriodicalId":29793,"journal":{"name":"Precision Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/prechem.4c00035","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142276366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0