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Precision Chemistry
Pub Date : 2025-04-28
Piracha Sanwal, Xinrui Gu, Yifei Zhang* and Gao Li*, 
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引用次数: 0
Precision Chemistry
Pub Date : 2025-04-28
Cheng Liu, Xu-Yong Chen*, Xiao-Jie Cao, Wenmin Zhang and Li-Hui Cao*, 
{"title":"","authors":"Cheng Liu, Xu-Yong Chen*, Xiao-Jie Cao, Wenmin Zhang and Li-Hui Cao*, ","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":29793,"journal":{"name":"Precision Chemistry","volume":"3 4","pages":"XXX-XXX XXX-XXX"},"PeriodicalIF":0.0,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/prechem.4c00102","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144420431","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 Chemistry
Pub Date : 2025-04-28
Junyou Li, Ting Li, Zheng Zou and Hung-Wing Li*, 
{"title":"","authors":"Junyou Li, Ting Li, Zheng Zou and Hung-Wing Li*, ","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":29793,"journal":{"name":"Precision Chemistry","volume":"3 4","pages":"XXX-XXX XXX-XXX"},"PeriodicalIF":0.0,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/prechem.4c00100","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144346998","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 Chemistry
Pub Date : 2025-04-28
Zeyue Wei, Hanzhi Zhang, Yunxing Bai, Xuanyu Zhang and Weixin Huang*, 
{"title":"","authors":"Zeyue Wei, Hanzhi Zhang, Yunxing Bai, Xuanyu Zhang and Weixin Huang*, ","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":29793,"journal":{"name":"Precision Chemistry","volume":"3 4","pages":"XXX-XXX XXX-XXX"},"PeriodicalIF":0.0,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/prechem.4c00089","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144420429","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 Chemistry
Pub Date : 2025-04-28
Jung Yeon Park, Dongjun Baek, Hyunggeun Min, Bongjun Yeom, Jeong Sook Ha and Yongju Kim*, 
{"title":"","authors":"Jung Yeon Park, Dongjun Baek, Hyunggeun Min, Bongjun Yeom, Jeong Sook Ha and Yongju Kim*, ","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":29793,"journal":{"name":"Precision Chemistry","volume":"3 4","pages":"XXX-XXX XXX-XXX"},"PeriodicalIF":0.0,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/prechem.4c00074","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144420432","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 Chemistry
Pub Date : 2025-04-28
Zheng Zhou*, Yong Yang*, Jianwei Liang, Sota Sato, Zhenyi Zhang and Zheng Wei, 
{"title":"","authors":"Zheng Zhou*, Yong Yang*, Jianwei Liang, Sota Sato, Zhenyi Zhang and Zheng Wei, ","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":29793,"journal":{"name":"Precision Chemistry","volume":"3 4","pages":"XXX-XXX XXX-XXX"},"PeriodicalIF":0.0,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/prechem.5c00027","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144420427","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 Chemistry
Pub Date : 2025-04-28
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引用次数: 0
Synthesis of Chrysene-Based Nanographenes by a Successive APEX Reaction. 连续APEX反应合成蒽基纳米石墨烯。
IF 6.2
Precision Chemistry
Pub Date : 2025-04-18 eCollection Date: 2025-09-22 DOI: 10.1021/prechem.5c00032
Yuichi Nakashige, Hidefumi Nakatsuji, Kaho Matsushima, Kazuo Murakami, Hideto Ito, Kenichiro Itami

Chrysene-based nanographenes (ChrNGs), despite their relatively small structures, have been reported to exhibit low highest occupied molecular orbital (HOMO)-lowest unoccupied molecular orbital (LUMO) energy gaps and strong long-wavelength fluorescence, making them attractive for various applications. However, the precise synthesis of ChrNGs remains challenging, and their availability is limited compared with other classes of nanographenes. Herein, we report the synthesis of novel ChrNGs by a successive annulative π-extension (APEX) reaction. Using diphenylacetylene and benzonaphthosilole in a Pd/o-chloranil catalytic system, successive APEX afforded ChrNGs of various lengths and degrees of oxidation. Furthermore, exhaustive separation and further π-extension by cyclodehydrogenation afforded ChrNGs with more flat and rigid structures. Photophysical measurements of the obtained ChrNGs showed a variety of absorption and emission properties, including intense multicolor emission.

基于铬烯的纳米石墨烯（ChrNGs）尽管结构相对较小，但具有较低的最高占据分子轨道(HOMO)-最低未占据分子轨道（LUMO）能隙和较强的长波荧光，因此具有广泛的应用前景。然而，chrng的精确合成仍然具有挑战性，与其他种类的纳米石墨烯相比，它们的可用性有限。本文报道了用连续环性π-延伸（APEX）反应合成新型ChrNGs的方法。在Pd/o-氯胺催化体系中，二苯基乙炔和苯并萘唑连续APEX得到了不同长度和氧化程度的chngs。此外，环脱氢的彻底分离和进一步π扩展使chrng具有更平坦和刚性的结构。光物理测量表明，所获得的ChrNGs具有多种吸收和发射特性，包括强烈的多色发射。
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引用次数: 0
Nonequilibrium Process for Doping Under Continuous-Flow Hydrothermal Synthesis of Cerium Oxide-Based Nanoparticles 连续流水热合成氧化铈基纳米颗粒掺杂的非平衡过程。
IF 6.2
Precision Chemistry
Pub Date : 2025-04-17 DOI: 10.1021/prechem.5c00004
Akira Yoko*, Chunli Han, Ayame Sakonaka, Gimyeong Seong, Takaaki Tomai, Satoshi Ohara and Tadafumi Adschiri*, 

The nonequilibrium composition and its formation process are critical aspects of nanoparticle production technology. Understanding the dynamics of nanoparticle formation under nonequilibrium conditions is essential. In this study, Cr-doped CeO2 nanoparticles are synthesized via continuous-flow hydrothermal synthesis at various temperatures (300, 350, 400 °C) with reaction times precisely controlled on the order of seconds. At the initial stage of particle formation, Cr-rich CeO2 particles form due to a low surface energy. Over time, the Cr content decreases as the particles relax toward the equilibrium structure. This process yields an unusual nonequilibrium composition through rapid heating and short residence times. Similar nonequilibrium compositions are also observed for other dopants, such as Fe and Eu. Continuous-flow hydrothermal synthesis thus presents an efficient method for fabricating nanomaterials with unique compositions that are unattainable using conventional batch methods.

非平衡组成及其形成过程是纳米颗粒生产技术的关键环节。了解非平衡条件下纳米颗粒形成的动力学是必不可少的。在本研究中，通过连续流水热合成法在不同温度（300、350、400℃）下合成了cr掺杂的CeO2纳米颗粒，反应时间精确控制在秒级。在颗粒形成初期，由于表面能较低，形成了富cr的CeO2颗粒。随着时间的推移，随着颗粒向平衡结构放松，Cr含量降低。该过程通过快速加热和短停留时间产生不寻常的非平衡成分。类似的非平衡成分也可用于其他掺杂剂，如Fe和Eu。因此，连续流水热合成为制造具有独特成分的纳米材料提供了一种有效的方法，这是使用常规批处理方法无法实现的。
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引用次数: 0
From Flexible to Crystalline. 从柔韧到结晶。
Precision Chemistry
Pub Date : 2025-04-17 eCollection Date: 2025-05-26 DOI: 10.1021/prechem.5c00039
Juanjuan Jia
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引用次数: 0
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