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报告题目：金属有机框架多相态演变及新层次动态化学
报告时间：2025-10-17 09:30
报告人： 曾明华 教授
广西师范大学
报告地点：卢嘉锡楼202报告厅
转播地点：翔安校区能源材料大楼3号楼会议室3，漳州校区生化主楼307教室
报告摘要：
The “nature of glass” represents a significant query that holds both scientific importance and practical value, which requires new types of glasses, new research methods and theoretical breakthroughs. The multi-phase states of glass, liquid, supercooled liquid, and others have elevated the research of MOFs chemistry and functional applications to a new height. Aiming at the limitation of traditional melt-quenching method which is difficult to universally prepare MOF glasses, a new strategy of sequential perturbation for systematic preparation of MOFs glasses is proposed, following path of crystalline state → sequential perturbation → amorphous MOFs → glass transition under mild temperatures → supercooled liquid → quenched MOFs glass. As the inspiring results, the first example of glass generated from traditional crystalline MOFs precursor, and the first glass generated form 3D MOFs precursor that incorporating multinuclear metal cluster building unit, was found and confirmed. Several important MOFs glass properties such as GFA, Tg, liquid fragility, film mechanical property can be systematically regulated. High-temperature coordinative recognition and self-assembly was revealed in the supercooled liquid recrystallization process. Making use of the unique wide pore size distribution of amorphous/glassy MOFs, the first gases breakthrough experiment was carried out to achieve the selective separation of C2 or C3 hydrocarbon molecules. We have also established comprehensive techniques to confirm a series of novel physical phenomena, and to elucidate the nature and correlation of the microscopic multilevel structural transformations and phase changes.
报告人简介：
曾明华，广西师范大学教授，博士生导师，“国家自然科学基金杰出青年科学基金”获得者 (2015)，爱思唯尔中国高被引学者，“有机功能分子合成与应用”教育部重点实验室主任 (2017-2023)。主要学术成绩：(1) 提出并实现多层次串联扰动普适化制备MOF玻璃的中国方案，基于相态演变过程拓展出高温下的动态化学研究；(2) 提出固-液结构信息关联性的概念，建立了综合利用“质谱+晶体学+理论计算”，阐析复杂配位分子簇组装过程与机理并指导其分子定制的新方法；(3) 提出配位协变序列共价低聚反应概念，较系统研究原位自催化串联反应的位点选择性、反应过程及机理，揭示限域杂原子与杂环排列新次序。
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