Journal of Colloid and Interface Science, Год журнала: 2024, Номер 683, С. 521 - 530
Опубликована: Дек. 6, 2024
Язык: Английский
Angewandte Chemie, Год журнала: 2024, Номер 136(23)
Опубликована: Апрель 8, 2024
Abstract Vitrimers offer a unique combination of mechanical performance, reprocessability, and recyclability that makes them highly promising for wide range applications. However, achieving dynamic behavior in vitrimeric materials at their intended usage temperatures, thus combining reprocessability with adaptivity through associative covalent bonds, represents an attractive but formidable objective. Herein, we couple boron‐nitrogen (B−N) dative bonds B−O to generate new class vitrimers, vitrimers (BNVs), endow features temperatures. Compared boron‐ester (BEVs) without B−N the BNVs showcase enhanced performance. The excellent properties come from synergistic effect supramolecular polymer networks. Moreover, benefiting exchange above topological freezing temperature ( T v ), resultant also possess processability. This study leveraged structural characteristics boron‐based vitrimer achieve material reinforcement toughness enhancement, simultaneously providing novel design concepts construction materials.
Язык: Английский
Процитировано
5
Chinese Chemical Letters, Год журнала: 2025, Номер unknown, С. 111279 - 111279
Опубликована: Апрель 1, 2025
Язык: Английский
Процитировано
0
Journal of the American Chemical Society, Год журнала: 2025, Номер unknown
Опубликована: Май 9, 2025
Despite recent significant advancements in the applications of organic polymeric crystals (OPCs), a comprehensive understanding design principles for high-mechanical-property remains somewhat elusive. Here, we investigate mechanical properties OPCs from perspectives stress dispersion and energy dissipation by examining macrocycle three analogous polymers with different solvent fillings, utilizing novel research platform constructed via dative B-N bonds. Through thorough study investigation into molecular mechanisms these model topologies, it was demonstrated that structural expansion filling are effective pathways enhancing performance employing strategies. Overall, our showcases precise control over topology OPC materials elucidates specific modulating their performance, offering broader perspective efficiently other crystalline polymers, such as metal-organic frameworks (MOFs) covalent (COFs).
Язык: Английский
Процитировано
0
Carbohydrate Polymers, Год журнала: 2024, Номер 334, С. 121892 - 121892
Опубликована: Фев. 2, 2024
Язык: Английский
Процитировано
2
Angewandte Chemie, Год журнала: 2024, Номер 136(28)
Опубликована: Апрель 24, 2024
Abstract A novel class of crystalline porous materials has been developed utilizing multilevel dynamic linkages, including covalent B−O, dative B←N and hydrogen bonds. Typically, boronic acids undergo in situ condensation to afford B 3 O ‐based units, which further extend molecular complexes or chains via The obtained superstructures are subsequently interconnected bonds π–π interactions, producing organic frameworks (CPOFs). CPOFs display excellent solution processability, allowing dissolution subsequent crystallization their original structures, independent recrystallization conditions, possibly due the diverse bond energies involved interactions. Significantly, can be synthesized on a gram‐scale using cost‐effective monomers. In addition, numerous acidic sites endow with high NH capacity, surpassing most commercial materials.
Язык: Английский
Процитировано
2
Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(46)
Опубликована: Авг. 10, 2024
Abstract Photo‐responsive organic crystals, capable of converting light energy into chemical to initiate conformational transitions, present an emerging strategy for developing lightweight and versatile smart materials. However, visible light‐triggered tailored guests capture release behaviors in all‐organic solids are rarely reported. Here, we introduce a photoreactive crystalline boron‐nitrogen (B←N) host adduct with the ability undergo [2+2] photocycloaddition upon 447 nm exposure. This process facilitates single‐crystal‐to‐single‐crystal (SCSC) photodimerization mother liquor, maintaining original B←N structure. Weakened intermolecular interactions within photodimer contribute fast guest air under irradiation. Furthermore, dynamic bonds enable reversible transformations between adducts cocrystals solvent‐induced allosteric effect. As result, four crystals containing individual alkane easily obtained exhibited photo‐controlled release. Therefore, integration photo reactivity structural transformation enables customized molecules.
Язык: Английский
Процитировано
2
Angewandte Chemie, Год журнала: 2024, Номер 136(43)
Опубликована: Июнь 27, 2024
Abstract The multiple mortise‐and‐tenon joint parts are the core factors to provide structural stability and diversity of Chinese Luban locks; however, constructing such structures is very challenging. Herein, single crystals a covalent organic nanoribbon (named CityU‐27 ) prepared through assembly hexahydroxytriphenylene (HHTP), 4,4′‐vinylenedipyridine (BYE), phenylboronic acid (BA) together dative boron←nitrogen (B←N) bonds. single‐crystal X‐ray diffraction analysis indicates that has structure, where each forms tight π–π interactions with four neighboring others generate lock‐like configuration. been demonstrated be an efficient photocatalyst in one‐pot tandem reaction hydrogen evolution (HER) semi‐hydrogenation alkynes series produce olefins without any additional photosensitizers co‐catalysts (metal‐free).
Язык: Английский
Процитировано
1
Chemical Science, Год журнала: 2024, Номер unknown
Опубликована: Янв. 1, 2024
Developing single crystals of covalent organic polymers (COPs) is highly attractive as they can afford precise structural information for studying internal interactions. Employing dative boron-nitrogen (B-N) bonds to construct single-crystalline COPs feasible since the dynamic linkages self-correct errors, thus improving crystallization. In this project, we develop a single-crystal COP with nanobelt structure, namely CityU-26,
Язык: Английский
Процитировано
1
Опубликована: Янв. 1, 2024
Язык: Английский
Процитировано
0
Опубликована: Янв. 1, 2024
Язык: Английский
Процитировано
0