Laggner P, Kriechbaum M
Institut für Röntgenfeinstrukturforschung, Austrian Academy of Sciences, Graz.
Chem Phys Lipids. 1991 Mar;57(2-3):121-45. doi: 10.1016/0009-3084(91)90072-j.
A brief review is given on the principles and methods used to investigate structural phase transitions in phospholipid supramolecular structures. The conceptual differences of approaches close to and far from equilibrium are addressed, and the consequences in terms of the limits of interpretation for different types of methods, in particular referring to jump-relaxation and steady-state techniques, are surveyed. With the emphasis on connecting dynamic and structural information, the results obtained so far from different techniques are reviewed, and the open questions addressed. The more recent advances by millisecond time-resolved X-ray diffraction with synchrotron radiation and their main results obtained for transitions triggered by IR-laser temperature jumps are summarized. As a major novel aspect in the field, the necessity of considering martensitic, diffusionless transformation mechanisms and the occurrence of intermediate structures is highlighted.
本文简要回顾了用于研究磷脂超分子结构中结构相变的原理和方法。讨论了接近平衡和远离平衡方法的概念差异，并概述了不同类型方法（特别是跳跃弛豫和稳态技术）在解释局限性方面的后果。重点在于连接动态和结构信息，回顾了迄今为止从不同技术获得的结果，并提出了未解决的问题。总结了利用同步辐射的毫秒级时间分辨X射线衍射的最新进展及其对红外激光温度跳跃引发的转变所获得的主要结果。作为该领域的一个主要新方面，强调了考虑马氏体、无扩散转变机制和中间结构出现的必要性。
