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“造小”的艺术,用分子构筑新材料(国际科技前沿)
Ren Min Ri Bao· 2025-12-21 22:20
该研究由华东理工大学费林加诺贝尔奖科学家联合研究中心完成。2019年,研究团队在参观上海中心大 厦时受到启发。该大厦于2016年建成,是目前中国第一高楼、世界第三高楼,以多项创新技术在超高层 建筑史上具有里程碑意义。研究团队特别注意到,其独特的内外双层螺旋外观不仅赋予建筑独特的空气 动力学稳定性,也令人联想到生命体系中的螺旋结构,如DNA和某些蛋白质。由此,研究团队提出一 个科学设想:能否在非生物体系中,通过化学合成手段构建具有类似几何特征和动态功能的人工高分 子? 生物体内的螺旋高分子承担着信息存储、结构支撑或催化等关键功能,其精密构型被认为是"生命密 码"的物理载体。然而,数十年来,化学家虽然能合成出螺旋结构高分子,但往往基于难降解、难回收 的刚性骨架,不具备天然螺旋高分子一样的动态功能。 此次研究团队从最基础的小分子出发,尝试将氨基酸、二硫键等天然的、与生物相容的"分子积木",通 过动态可逆的化学键连接起来,构筑出稳定的螺旋构象。不过,早期设计的分子仅靠氢键等弱相互作用 维持螺旋,一旦受热或环境变化,结构便迅速"坍塌"。 螺旋聚合物和上海中心大厦结构示意图。 资料图片 近期,中国与荷兰科学家合作完成的一 ...
国际奥委会主席考文垂访问TCL
Zhong Guo Xin Wen Wang· 2025-11-13 03:33
Core Points - TCL's founder and chairman, Li Dongsheng, signed a memorandum of cooperation with IOC President Thomas Bach, focusing on strategic collaboration for the Milan Winter Olympics and global promotion of the Olympic movement [2] - The partnership aims to leverage TCL's advanced technologies in areas such as AI and ESG to enhance the Olympic experience for athletes and global audiences [2] - The memorandum signifies an expansion of the existing collaboration between the IOC and TCL, exploring new partnership models for Olympic global cooperation [2] Group 1 - TCL will provide various cutting-edge display products for the Olympic events, including large-screen TVs, LED screens, digital signage, and AR/AI glasses, creating an "Olympic Screen Universe" [3] - The deployment of TCL's products will occur in key areas such as competition venues, broadcast centers, and the Olympic Village [3] - TCL aims to empower athletes with smart Olympic experiences by providing smart home appliances and communication tools to enhance their connectivity with family and friends [3] Group 2 - The company plans to actively expand strategic collaborations with the IOC and national Olympic committees, utilizing its global resources to support the dissemination of Olympic spirit and the development of youth sports and Paralympic movements [3]