相关实验视频
Updated: Mar 3, 2026

10:34
Ligand Nano-cluster Arrays in a Supported Lipid Bilayer
Published on: April 23, 2017
7.3K
非对应的集群包装使得超稳定的玻璃能够保存和传递不稳定的生物分子
Wei Fan1, Peng Zhou1, Guizhi Shen1
1Institute of Process Engineering, Chinese Academy of Sciences, State Key Laboratory of Biopharmaceutical Preparation and Delivery, Beijing, China.
Angewandte Chemie (International ed. in English)
|March 2, 2026
概括
研究人员开发了一种新的非共价玻璃系统,可以克服低玻璃过渡温度和稳定性之间的典型权衡. 这种突破性的材料具有很高的结晶性,同时仍然可加工,使生物分子保存的新应用成为可能.
科学领域:
- 材料科学 材料科学 材料科学
- 物理化学 物理化学
- 聚合物科学 聚合物科学
背景情况:
- 分子玻璃通常表现出低玻璃过渡温度 (Tg) 和稳定性之间的权衡,由热力学-动力学合 (亚当-吉布斯理论) 支配.
- 低Tg对于温和加工是可取的,但往往会导致固有的不稳定性和快速结晶.
- 现有材料在努力实现可加工性和长期稳定性.
研究的目的:
- 设计和描述一种新的分子玻璃系统,该系统将玻璃过渡温度与结晶阻力脱.
- 调查这种新的玻璃系统中增强稳定的结构基础.
- 为了证明超稳定无形材料的实际实用性.
主要方法:
- 一个非共价玻璃系统的合成利用结合的纳米集群.
- 热性质的表征,包括玻璃过渡温度 (Tg) 和结晶屏障.
- 对分子架构和包装的分析,以了解结构-属性关系.
- 在室温下证明生物分子的保存.
主要成果:
- 达到一个特殊的结晶屏障>653.2 kJ mol-1.1.
- 保持了适度的玻璃过渡温度<332.3 K.
- 确定了一个"非共价集群包装"架构,负责解Tg和稳定性.
- 证明了强大的室温保存和可变生物分子的传递.
结论:
- 开发的非共价玻璃系统挑战了分子玻璃中传统的热力学-动力学合.
- 独特的"非共价集群包装"架构有效地抑制核化途径.
- 本文介绍了一种通用设计策略,用于创建具有实用应用的超稳定,功能多功能无形材料.
相关概念视频
Noncovalent Attractions in Biomolecules
65.7K
Noncovalent attractions are associations within and between molecules that influence the shape and structural stability of complexes. These interactions differ from covalent bonding in that they do not involve sharing of electrons.
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...
65.7K
Noncovalent Attractions in Biomolecules
19.7K
19.7K
The Colloidal State
28
The formation of a colloidal system is exemplified by an aqueous solution containing Cl− ions is introduced to another containing Ag+ ions, resulting in the precipitation of solid AgCl as extremely tiny crystals. Instead of settling out as a filterable precipitate, these crystals remain suspended in the liquid, showcasing a colloidal system.A colloidal system involves colloidal particles within the approximate range of 1 to 1000 nm in at least one dimension, dispersed in a medium called...
28

