000745187 000__ 03424cam\a2200505Ii\4500 000745187 001__ 745187 000745187 005__ 20230306141258.0 000745187 006__ m\\\\\o\\d\\\\\\\\ 000745187 007__ cr\cn\nnnunnun 000745187 008__ 140827s2014\\\\sz\a\\\\ob\\\\000\0\eng\d 000745187 019__ $$a893684838 000745187 020__ $$a9783319085661$$qelectronic book 000745187 020__ $$a3319085662$$qelectronic book 000745187 020__ $$z9783319085654 000745187 0247_ $$a10.1007/978-3-319-08566-1$$2doi 000745187 035__ $$aSP(OCoLC)ocn889332415 000745187 035__ $$aSP(OCoLC)889332415$$z(OCoLC)893684838 000745187 040__ $$aGW5XE$$beng$$erda$$epn$$cGW5XE$$dYDXCP$$dCOO$$dN$T$$dIDEBK$$dCDX$$dUPM$$dOCLCF$$dE7B$$dEBLCP$$dDEBSZ$$dOCLCQ 000745187 049__ $$aISEA 000745187 050_4 $$aQD96.R34 000745187 08204 $$a543/.57$$223 000745187 1001_ $$aLüttschwager, Nils Olaf Bernd,$$eauthor. 000745187 24510 $$aRaman spectroscopy of conformational rearrangements at low temperatures$$h[electronic resource] :$$bfolding and stretching of alkanes in supersonic jets /$$cNils Olaf Bernd Lüttschwager. 000745187 264_1 $$aCham :$$bSpringer,$$c2014. 000745187 300__ $$a1 online resource (xii, 183 pages) :$$billustrations. 000745187 336__ $$atext$$btxt$$2rdacontent 000745187 337__ $$acomputer$$bc$$2rdamedia 000745187 338__ $$aonline resource$$bcr$$2rdacarrier 000745187 4901_ $$aSpringer theses,$$x2190-5053 000745187 500__ $$a"Doctoral thesis accepted by the Georg-August-University Göttingen, Germany." 000745187 504__ $$aIncludes bibliographical references. 000745187 5050_ $$aIntroduction -- Background -- Experimental -- Unbranched n-alkanes -- Perfluorinated alkanes -- Modulus of elasticity -- Summary and outlook -- Appendix. 000745187 506__ $$aAccess limited to authorized users. 000745187 520__ $$aThis 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, whilefor shorter chain lengths, a simple stretched conformation is energetically preferred. This thesis can locate the experimental turning point for the first timein aninteraction-free manner from measurements of unbranched alkanes at low temperaturesin 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 flexibilitycan bequantified. The investigations are complemented by measurements of perfluoroalkanes, and similarities and differences between the compounds are discussed. Furthermore, Nils Lüttschwagerdetermines 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 thatthe single polymer molecules can be as stiff as a rod of steel. 000745187 588__ $$aOnline resource; title from PDF title page (SpringerLink, viewed August 27, 2014). 000745187 650_0 $$aRaman spectroscopy. 000745187 650_0 $$aConformational analysis. 000745187 650_0 $$aCryochemistry. 000745187 650_0 $$aAlkanes. 000745187 77608 $$iPrint version:$$z9783319085654 000745187 830_0 $$aSpringer theses. 000745187 85280 $$bebk$$hSpringerLink 000745187 85640 $$3SpringerLink$$uhttps://univsouthin.idm.oclc.org/login?url=http://link.springer.com/10.1007/978-3-319-08566-1$$zOnline Access$$91397441.1 000745187 909CO $$ooai:library.usi.edu:745187$$pGLOBAL_SET 000745187 980__ $$aEBOOK 000745187 980__ $$aBIB 000745187 982__ $$aEbook 000745187 983__ $$aOnline 000745187 994__ $$a92$$bISE