南强学术讲座

报告题目：Around the world in 80 years

报告时间：2024-05-13 09:00

报告人： Sir Fraser Stoddart 

          Northwestern University，2016年诺贝尔化学奖获得者

报告地点：化学报告厅

转播地点：翔安校区能源材料大楼3号楼二楼报告厅，漳州校区生化主楼307教室

报告摘要：

In 2010, we discovered an example of radically enhanced molecular recognition, which represents a valuable tool for the design and synthesis of artificial molecular pumps (AMPs) and artificial molecular motors. In my lecture, I will describe how this breakthrough has led to the fabrication of (1) two AMPs, (2) a dual and a duet pump, (3) a precise polyrotaxane synthesizer, which can be produced by attaching an AMP–call it a pumping cassette–to each end of a polymeric connecting chain, and (4) mechanisorption, which results from non-equilibrium pumping to form mechanical bonds between adsorbents and adsorbates. This active mode of adsorption has been realized on surfaces of metal-organic frameworks (MOFs) grafted with arrays of molecular pumps. Adsorbates are transported from one well-defined compartment–the bulk–to another well-defined compartment–the interface–thereby creating large potential gradients in the form of chemical capacitors wherein energy is stored in metastable states.

All these molecular pumps operate away-from-equilibrium, using energy ratchet mechanisms, in the presence of fuels and in environments that are dominated by Brownian motion. It is possible, in principle, to generate highly engineered polyrotaxanes with palindromic arrays of co-constitutionally heterotopic rings positioned on constitutionally symmetrical polymer dumbbells and then, ultimately, transcribe their programmed information back into the domain of sequence-controlled polymer synthesis. Mechanisorption extends the scope and potential of adsorption phenomena and interfaces. If materials scientists can incorporate mechanisorption into other active structures, the storage of gases like hydrogen, carbon dioxide and methane will enter a whole new world.  

报告人简介：

Sir Fraser Stoddart教授是机械互锁型分子及分子机器领域的创始人和重要奠基人，迄今已经在Nature、Science等重要杂志发表论文1270余篇，所发表的科研论文在全球范围内被引用超14万次。Stoddart教授的研究成果引起了全球广泛关注，获得100余项国际奖项和荣誉，其中包括1978年由化学学会颁发的Carbohydrate Chemistry Award，1994年获得International Izatt-Christensen Award，1999年由美国化学学会颁发的Arthur C. Cope Scholar Award等。2007年，伊丽莎白二世亲自为其授予爵士称号（Sir），同年获艾伯特爱因斯坦世界科学奖。他是2016年诺贝尔化学奖获得者、美国科学院院士、英国皇家科学院院士、德国自然科学院院士、荷兰皇家艺术与科学院院士、美国科学促进会院士以及中国科学院外籍院士。

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化学化工学院