Precision Chemistry最新文献

Precision in Sensing.

Precision Chemistry Pub Date : 2024-12-12 eCollection Date: 2024-12-23 DOI: 10.1021/prechem.4c00094

J Justin Gooding

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Precision in Sensing

Precision Chemistry Pub Date : 2024-12-12 DOI: 10.1021/prechem.4c0009410.1021/prechem.4c00094

J. Justin Gooding*,

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Whole-Process Precision Chemistry for Clusters 集群全过程精密化学

Precision Chemistry Pub Date : 2024-10-30 DOI: 10.1021/prechem.4c0008310.1021/prechem.4c00083

Jianping Xie*,

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Whole-Process Precision Chemistry for Clusters.

Precision Chemistry Pub Date : 2024-10-30 eCollection Date: 2024-11-25 DOI: 10.1021/prechem.4c00083

Jianping Xie

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Proton Transfer Anionic Polymerization of Methyl Methacrylate with Ligands for Dual Control of Molecular Weight and Tacticity

Precision Chemistry Pub Date : 2024-10-15 DOI: 10.1021/prechem.4c0006610.1021/prechem.4c00066

Katsutoshi Sagawa, Mineto Uchiyama*, Hironobu Watanabe, Chihiro Homma and Masami Kamigaito*,

{"title":"Proton Transfer Anionic Polymerization of Methyl Methacrylate with Ligands for Dual Control of Molecular Weight and Tacticity","authors":"Katsutoshi Sagawa, Mineto Uchiyama*, Hironobu Watanabe, Chihiro Homma and Masami Kamigaito*, ","doi":"10.1021/prechem.4c0006610.1021/prechem.4c00066","DOIUrl":"https://doi.org/10.1021/prechem.4c00066https://doi.org/10.1021/prechem.4c00066","url":null,"abstract":"Dual control of the molecular weight and tacticity in proton transfer anionic polymerization (PTAP) of methyl methacrylate (MMA) was investigated by using various ligands in the presence of a bulky potassium base catalyst and an organic compound with a weakly acidic C–H bond as dormant species in toluene at 0 °C. The tacticity of the resulting poly(MMA) (PMMA) produced without ligands was nearly atactic (rr/mr/mm = 22/54/24). However, the use of 18-crown-6 as a ligand afforded predominantly syndiotactic PMMA (rr ≈ 58%), whereas the use of chiral bis(oxazoline) ligands gave slightly isotactic-rich PMMA (mm ≈ 32%). Molecular weight control of PMMA was achieved (Đ = 1.1–1.2) by adding 1,1-diphenylethanol as a reversible terminator while maintaining control of the tacticity with the above ligands. Stereoblock PMMA consisting of atactic and syndiotactic segments was successfully synthesized via sequential PTAP using macroinitiator/macro-CTA methods.","PeriodicalId":29793,"journal":{"name":"Precision Chemistry","volume":"2 12","pages":"628–633 628–633"},"PeriodicalIF":0.0,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/prechem.4c00066","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142870144","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

Proton Transfer Anionic Polymerization of Methyl Methacrylate with Ligands for Dual Control of Molecular Weight and Tacticity.

Precision Chemistry Pub Date : 2024-10-15 eCollection Date: 2024-12-23 DOI: 10.1021/prechem.4c00066

Katsutoshi Sagawa, Mineto Uchiyama, Hironobu Watanabe, Chihiro Homma, Masami Kamigaito

引用次数: 0

Regulation of Coordinating Anions around Single Co(II) Sites in a Covalent Organic Framework for Boosting CO2 Photoreduction 调控共价有机框架中单个 Co（II）位点周围的配位阴离子，促进二氧化碳光反应

Precision Chemistry Pub Date : 2024-10-14 DOI: 10.1021/prechem.4c0005810.1021/prechem.4c00058

Nan Dai, Yunyang Qian, Denan Wang, Jiajia Huang, Xinyu Guan, Zhongyuan Lin, Weijie Yang, Rui Wang*, Jier Huang, Shuang-Quan Zang and Hai-Long Jiang*,

{"title":"Regulation of Coordinating Anions around Single Co(II) Sites in a Covalent Organic Framework for Boosting CO2 Photoreduction","authors":"Nan Dai, Yunyang Qian, Denan Wang, Jiajia Huang, Xinyu Guan, Zhongyuan Lin, Weijie Yang, Rui Wang*, Jier Huang, Shuang-Quan Zang and Hai-Long Jiang*, ","doi":"10.1021/prechem.4c0005810.1021/prechem.4c00058","DOIUrl":"https://doi.org/10.1021/prechem.4c00058https://doi.org/10.1021/prechem.4c00058","url":null,"abstract":"While photocatalytic CO2 reduction has been intensively investigated, reports on the influence of anions coordinated to catalytic metal sites on CO2 photoreduction remain limited. Herein, different coordinated anions (F–, Cl–, OAc–, and NO3–) around single Co sites installed on bipyridine-based three-component covalent organic frameworks (COFs) were synthesized, affording TBD-COF-Co-X (X = F, Cl, OAc, and NO3), for photocatalytic CO2 reduction. Notably, the presence of these coordinated anions on the Co sites significantly influences the photocatalytic performance, where TBD-COF-Co-F exhibits superior activity to its counterparts. Combined experimental and theoretical results indicate that the enhanced activity in TBD-COF-Co-F is attributed to its efficient charge transfer, high CO2 adsorption capacity, and low energy barrier for CO2 activation. This study provides a new strategy for boosting COF photocatalysis through coordinated anion regulation around catalytic metal sites.","PeriodicalId":29793,"journal":{"name":"Precision Chemistry","volume":"2 11","pages":"600–609 600–609"},"PeriodicalIF":0.0,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/prechem.4c00058","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142694562","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

Regulation of Coordinating Anions around Single Co(II) Sites in a Covalent Organic Framework for Boosting CO₂ Photoreduction.

Precision Chemistry Pub Date : 2024-10-14 eCollection Date: 2024-11-25 DOI: 10.1021/prechem.4c00058

Nan Dai, Yunyang Qian, Denan Wang, Jiajia Huang, Xinyu Guan, Zhongyuan Lin, Weijie Yang, Rui Wang, Jier Huang, Shuang-Quan Zang, Hai-Long Jiang

{"title":"Regulation of Coordinating Anions around Single Co(II) Sites in a Covalent Organic Framework for Boosting CO2 Photoreduction.","authors":"Nan Dai, Yunyang Qian, Denan Wang, Jiajia Huang, Xinyu Guan, Zhongyuan Lin, Weijie Yang, Rui Wang, Jier Huang, Shuang-Quan Zang, Hai-Long Jiang","doi":"10.1021/prechem.4c00058","DOIUrl":"10.1021/prechem.4c00058","url":null,"abstract":"While photocatalytic CO2 reduction has been intensively investigated, reports on the influence of anions coordinated to catalytic metal sites on CO2 photoreduction remain limited. Herein, different coordinated anions (F-, Cl-, OAc-, and NO3 -) around single Co sites installed on bipyridine-based three-component covalent organic frameworks (COFs) were synthesized, affording TBD-COF-Co-X (X = F, Cl, OAc, and NO3), for photocatalytic CO2 reduction. Notably, the presence of these coordinated anions on the Co sites significantly influences the photocatalytic performance, where TBD-COF-Co-F exhibits superior activity to its counterparts. Combined experimental and theoretical results indicate that the enhanced activity in TBD-COF-Co-F is attributed to its efficient charge transfer, high CO2 adsorption capacity, and low energy barrier for CO2 activation. This study provides a new strategy for boosting COF photocatalysis through coordinated anion regulation around catalytic metal sites.","PeriodicalId":29793,"journal":{"name":"Precision Chemistry","volume":"2 11","pages":"600-609"},"PeriodicalIF":0.0,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11600349/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142751748","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

Mechanically Stable and Damage Resistant Freestanding Ultrathin Silver Nanowire Films with Closely Packed Crossed-Lamellar Structure

Precision Chemistry Pub Date : 2024-10-13 DOI: 10.1021/prechem.4c0005310.1021/prechem.4c00053

Si-Chao Zhang, Huai-Ling Gao, Long Zhang, Yin-Bo Zhu, Ya-Dong Wu, Jian-Wei Liu, Li-Bo Mao, Mei Feng, Liang Dong, Zhao Pan, Xiang-Sen Meng, Yang Lu* and Shu-Hong Yu*,

{"title":"Mechanically Stable and Damage Resistant Freestanding Ultrathin Silver Nanowire Films with Closely Packed Crossed-Lamellar Structure","authors":"Si-Chao Zhang, Huai-Ling Gao, Long Zhang, Yin-Bo Zhu, Ya-Dong Wu, Jian-Wei Liu, Li-Bo Mao, Mei Feng, Liang Dong, Zhao Pan, Xiang-Sen Meng, Yang Lu* and Shu-Hong Yu*, ","doi":"10.1021/prechem.4c0005310.1021/prechem.4c00053","DOIUrl":"https://doi.org/10.1021/prechem.4c00053https://doi.org/10.1021/prechem.4c00053","url":null,"abstract":"One-dimensional (1D) functional nanowires are widely used as nanoscale building blocks for assembling advanced nanodevices due to their unique functionalities. However, previous research has mainly focused on nanowire functionality, while neglecting the structural stability and damage resistance of nanowire assemblies, which are critical for the long-term operation of nanodevices. Biomaterials achieve excellent mechanical stability and damage resistance through sophisticated structural design. Here, we successfully prepared a mechanically stabilized monolamella silver nanowire (Ag NW) film, based on a facile bubble-mediated assembly and nondestructive transfer strategy with the assistance of a porous mixed cellulose ester substrate, inspired by the hierarchical structure of biomaterial. Owing to the closely packed arrangement of Ag NWs combined with their weak interfaces, the monolamellar Ag NW film can be transferred to arbitrary substrates without damage. Furthermore, freestanding multilamellar Ag NW films with impressive damage resistance can be obtained from the monolamellar Ag NW film, through the introduction of bioinspired closely packed crossed-lamellar (CPCL) structure. This CPCL structure maximizes intra- and interlamellar interactions among Ag NWs ensuring efficient stress transfer and uniform electron transport, resulting in excellent mechanical durability and stable electrical properties of the multilamellar Ag NW films.","PeriodicalId":29793,"journal":{"name":"Precision Chemistry","volume":"2 12","pages":"634–643 634–643"},"PeriodicalIF":0.0,"publicationDate":"2024-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/prechem.4c00053","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142875067","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

Mechanically Stable and Damage Resistant Freestanding Ultrathin Silver Nanowire Films with Closely Packed Crossed-Lamellar Structure.

Precision Chemistry Pub Date : 2024-10-13 eCollection Date: 2024-12-23 DOI: 10.1021/prechem.4c00053

Si-Chao Zhang, Huai-Ling Gao, Long Zhang, Yin-Bo Zhu, Ya-Dong Wu, Jian-Wei Liu, Li-Bo Mao, Mei Feng, Liang Dong, Zhao Pan, Xiang-Sen Meng, Yang Lu, Shu-Hong Yu

{"title":"Mechanically Stable and Damage Resistant Freestanding Ultrathin Silver Nanowire Films with Closely Packed Crossed-Lamellar Structure.","authors":"Si-Chao Zhang, Huai-Ling Gao, Long Zhang, Yin-Bo Zhu, Ya-Dong Wu, Jian-Wei Liu, Li-Bo Mao, Mei Feng, Liang Dong, Zhao Pan, Xiang-Sen Meng, Yang Lu, Shu-Hong Yu","doi":"10.1021/prechem.4c00053","DOIUrl":"10.1021/prechem.4c00053","url":null,"abstract":"One-dimensional (1D) functional nanowires are widely used as nanoscale building blocks for assembling advanced nanodevices due to their unique functionalities. However, previous research has mainly focused on nanowire functionality, while neglecting the structural stability and damage resistance of nanowire assemblies, which are critical for the long-term operation of nanodevices. Biomaterials achieve excellent mechanical stability and damage resistance through sophisticated structural design. Here, we successfully prepared a mechanically stabilized monolamella silver nanowire (Ag NW) film, based on a facile bubble-mediated assembly and nondestructive transfer strategy with the assistance of a porous mixed cellulose ester substrate, inspired by the hierarchical structure of biomaterial. Owing to the closely packed arrangement of Ag NWs combined with their weak interfaces, the monolamellar Ag NW film can be transferred to arbitrary substrates without damage. Furthermore, freestanding multilamellar Ag NW films with impressive damage resistance can be obtained from the monolamellar Ag NW film, through the introduction of bioinspired closely packed crossed-lamellar (CPCL) structure. This CPCL structure maximizes intra- and interlamellar interactions among Ag NWs ensuring efficient stress transfer and uniform electron transport, resulting in excellent mechanical durability and stable electrical properties of the multilamellar Ag NW films.","PeriodicalId":29793,"journal":{"name":"Precision Chemistry","volume":"2 12","pages":"634-643"},"PeriodicalIF":0.0,"publicationDate":"2024-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11672535/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142902862","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