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Diamines,CS2 and Monoisocyanide-participated Polymerizations for Large-scale synthesis of Polythioureas and Thioformamide

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高分子科学:英文版 2023年第10期41卷 1563-1576页

作者： Jie Zhang Fan Ye Jin-Lei Huo Jian-Wen Peng Rong-Rong Hu Ben Zhong Tang State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Luminescence from Molecular AggregatesSouth China University of TechnologyGuangzhou510640China Shenzhen Institute of Aggregate Science and Technology School of Science and EngineeringThe Chinese University of Hong KongShenzhenGuangdong518172China AIE Institute Guangzhou510530China

Multicomponent polymerizations(MCPs)are powerful tools to synthesize functional polymers with great structural diversity,low cost and high efficiency,which usually generate single polymer ***,a robust one-pot diamines,CS_(2)and monoisocyanide-participated catalyst-free polymerization was developed at room temperature to produce polythiourea and thioformamide simultaneously in equal equivalent,which was featured with cheap monomers,simple operation and mild condition,affording various polythioureas with high Mws of up to 4.75×10^(4)g/mol in high yields of up to 98%.Polythioureas with varied chain composition and sequence-controlled structure could be synthesized in 62 g-scale from copolymerization or multicomponent tandem polymerization,enabling facile tuning of thermal property,crystallinity,mechanical property,and *** abundant irregular hydrogen bonds endowed the polythioureas excellent glassy state self-healing property at room temperature or below 0℃.This polymerization provided an efficient and economic approach to access functional polythioureas.

关键词： CS_(2) Multicomponent polymerization Sequence-controlled polythiourea scale-up synthesis Self-healing

Carbon nanotube: Controlled synthesis determines its future

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Science China Materials 2020年第1期63卷 16-34页

作者： Shuchen Zhang Liu Qian Qiuchen Zhao Zequn Wang Dewu Lin Weiming Liu Yabin Chen Jin Zhang Center for Nanochemistry Beijing Science and Engineering Center for NanocarbonsBeijing National Laboratory for Molecular SciencesCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China School of Aerospace Engineering Beijing Institute of TechnologyBeijing 100081China

Carbon nanotubes(CNTs) have received broad attention in the past decades due to their excellent physical and chemical properties and thus been regarded as a powerful candidate for future star-materials. Although various CNT products and their related applications have been demonstrated recently, their performance can hardly meet the researchers’ expectations compared with their theoretical properties. The current predicament is caused by the immature synthesis method, including the basic science and the producing technology. As the synthesis with controlled structures determines its future, this review summarizes the progress on the basic research and industrialization of CNTs in the past decades, including the fine structure control, aggregation status design and scale-up production, and further points out the way for the future development of CNTs combining with specific applications.

关键词： carbon nanotubes structure-controlled synthesis scale-up synthesis applications

Nanodiamonds as nanomaterial for biomedical field

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Frontiers of Materials Science 2021年第3期15卷 334-351页

作者： Sarah GARIFO Dimitri STANICKI Gamze AYATA Robert NMULLER Sophie LAURENT General Organic and Biomedical Chemistry UnitNuclear Magnetic Resonance(NMR)and Molecular Imaging LaboratoryUniversity of Mons(UMONS)Avenue Maistriau 197000 MonsBelgium Center for Microscopy and Molecular Imaging(CMMI) Rue Adrienne Bolland 86041 GosseliesBelgium

Recent advances in nanotechnology have attracted significant attention to nanodiamonds(NDs)in both industrial and research areas thanks to their remarkable intrinsic properties:large specific area,poor cytotoxicity,chemical resistance,magnetic and optical properties,ease of large-scale production,and surface reactivity make them suitable for numerous applications,including electronics,optics,sensors,polishing materials,and more recently,biological *** interest in diamond platforms for bioimaging and chemotherapy is *** the outstanding features of these particles and their ease of tuning,current and future applications in medicine have the potential to display innovative imaging applications and to be used as tools for monitoring and tracking drug delivery in vivo.

关键词： nanodiamond scale-up synthesis bioimaging hyperpolarization drug delivery

天然气提质过程中可有效回收丙烷和乙烷的高工业应用潜力金属有机框架材料

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Engineering 2023年第4期23卷 56-63,M0004页

作者： Shikai Xian Junjie Peng Haardik Pandey Timo Thonhauser Hao Wang Jing Li Hoffmann Institute of Advanced Materials Shenzhen PolytechnicShenzhen 518055China Department of Chemistry and Chemical Biology Rutgers UniversityPiscatawayNJ 08854USA School of Chemistry and Chemical Engineering South China University of TechnologyGuangzhou 510640China Department of Physics&Center for Functional Materials Wake Forest UniversityWinston-SalemNC 27109USA

开发高吸附量和选择性的高效吸附剂,用于天然气中C_(2)H_(6)和C_(3)H_(8)的分离和回收,是一项重要且具有挑战性的任务。在本研究中,我们证明高表面极性和合适的孔径直径是协同增强分离性能的两个关键因素,以金属-有机框架(MOF)-303和Mat... 详细信息

开发高吸附量和选择性的高效吸附剂,用于天然气中C_(2)H_(6)和C_(3)H_(8)的分离和回收,是一项重要且具有挑战性的任务。在本研究中,我们证明高表面极性和合适的孔径直径是协同增强分离性能的两个关键因素,以金属-有机框架(MOF)-303和Matériaux de l'Institut Lavoisier(MIL)-160为例,它们都具有高杂原子密度和所需孔径大小(5~7Å)的一维开放通道。值得注意的是,MOF-303对C_(3)H_(8)的吸附量在298 K和5 kPa时达到了3.38 mmol·g^(−1),与所有已报道的MOFs相比,C_(3)H_(8)/CH4(5:85,v/v)的理想吸附溶液理论(IAST)选择性达到了创纪录的5114。此外,MOF-303还显示出高C_(2)H_(6)吸附量(在10 kPa时)和C_(2)H_(6)/CH4(10:85,v/v)选择性,分别达到1.59 mmol·g^(−1)和26。由于其一维通道内较大的孔径直径和较低的杂原子密度,与MOF-303相比,MIL-160的吸附量和选择性显然更低,尽管这些值超过了大多数报道的MOFs。密度泛函理论(DFT)计算验证了高表面极性和合适的孔径直径协同增强了框架对C_(3)H_(8)和C_(2)H_(6)的亲和力,导致了对C_(3)H_(8)和C_(2)H_(6)的高负载能力和选择性。两种MOFs都具有显著的湿度稳定性,在暴露于95%相对湿度(RH)一个月后没有结构变化。此外,通过一锅反应可以轻松地扩大合成这两种化合物,以获得高结晶度的约5 g样品。最后,通过三元突破实验、再生测试和循环评估,展示了MOF-303和MIL-160作为高级吸附剂,用于高效分离C_(3)H_(8)/C_(2)H_(6)/CH4的巨大潜力。优异的分离性能、高稳定性、低成本和良好的可扩展性,使得这两种MOFs成为天然气净化及C_(2)H_(6)和C_(3)H_(8)回收的有前途的吸附剂。

关键词： Metal-organic framework Hydrocarbon adsorption and separation Selectivity Stability scale-up synthesis