Raman Spectroscopy of Conformational Rearrangements at Low Temperatures
Opis: 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 calculate this value from quantities of their building blocks, showing that the single polymer molecules can be as stiff as a rod of steel. Raman Spectroscopy of Conformational Rearrangements at Low Temperatures jest dostępny w sprzedaży w kategorii księgarnia ( E-booki ) [ E-Beletrystyka ] w cenie 444 zł i 82 gr (czterysta czterdzieści cztery złoych i osiemdziesiąt dwa groszy), Marka tego produktu jest nieznana.. Produkt jest nowy, a oferta jest dostępna na sprzedaż po kliknięciu w kup teraz lub w przycisk więcej informacji. Numer oferty : 2488879. Następna oferta to 20 000 mil podmorskiej żeglugi. Tą ofertę wyświetlono dziewięć razy.| Numer dostawcy | 44084 |
| ID | 3223c880-9e90-4f87-92b6-76cb65006e3b |
| Ostatnia zmiana | 1675140792196 |
| Waluta | PLN |
| Dostępność | 1 |
| Kategoria | Księgarnia/E-booki/E-Beletrystyka |
| Numer produktu | 2488879 |
| Wyświetleń | 9 |
| Oferta sklepu | Zobacz ofertę sklepu |
| ISBN | 9783319085661 |
| Format | |
| Rok wydania | 2014 |
| Wydawnictwo | Springer International Publishing |
| Autor | Nils Olaf Bernd Lüttschwager |