| 书目名称 | Raman Spectroscopy of Conformational Rearrangements at Low Temperatures |
| 副标题 | Folding and Stretchi |
| 编辑 | Nils Olaf Bernd Lüttschwager |
| 视频video | |
| 概述 | Nominated by the Georg-August-University Göttingen (Germany) as an outstanding PhD thesis.Determines the detailed balance between stiffness, conformational flexibility and inter-chain attractions for |
| 丛书名称 | Springer Theses |
| 图书封面 |  |
| 描述 | This thesis identifies the turning point in chain length, after which alkanes self-solvate into a folded structure instead of an extended stretched conformation. After this turning point, London dispersion forces rearrange isolated .n.-alkanes into a particular hairpin-structure, while for shorter chain lengths, a simple stretched conformation is energetically preferred. This thesis can locate the experimental turning point for the first time in an interaction-free manner from measurements of unbranched alkanes at low temperatures in supersonic jet expansions. It contains a detailed analysis of the vibrational Raman spectra of the chain molecules, which is supported by comprehensive quantum chemical simulations. In this way, the detailed balance between inter-chain attraction and conformational flexibility can be quantified. The investigations are complemented by measurements of perfluoroalkanes and similarities and differences between the compounds are discussed. Furthermore, Nils Lüttschwager determines the stiffnesses (elastic moduli) of two of the most common industrial polymers: polyethylene and polytetrafluorethylene. He uses in this thesis a sophisticated extrapolation to ca |
| 出版日期 | Book 2014 |
| 关键词 | Alkane Conformations; Elastic Modulus of Polyethylene; Gas Phase Spectroscopy of Low Volatile Compound |
| 版次 | 1 |
| doi | https://doi.org/10.1007/978-3-319-08566-1 |
| isbn_softcover | 978-3-319-35976-2 |
| isbn_ebook | 978-3-319-08566-1Series ISSN 2190-5053 Series E-ISSN 2190-5061 |
| issn_series | 2190-5053 |
| copyright | Springer International Publishing Switzerland 2014 |
发表于 2025-3-21 18:33:18
