000820455 001__ 820455 000820455 005__ 20240619083528.0 000820455 0247_ $$2doi$$a10.1140/epje/i2016-16086-5 000820455 0247_ $$2ISSN$$a1292-8941 000820455 0247_ $$2ISSN$$a1292-895X 000820455 0247_ $$2Handle$$a2128/12838 000820455 0247_ $$2WOS$$aWOS:000384580700001 000820455 037__ $$aFZJ-2016-05765 000820455 041__ $$aEnglish 000820455 082__ $$a530 000820455 1001_ $$0P:(DE-HGF)0$$aEguchi, Kazuya$$b0 000820455 245__ $$aThermophoresis of cyclic oligosaccharides in polar solvents 000820455 260__ $$aBerlin$$bSpringer$$c2016 000820455 3367_ $$2DRIVER$$aarticle 000820455 3367_ $$2DataCite$$aOutput Types/Journal article 000820455 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1479288220_29804 000820455 3367_ $$2BibTeX$$aARTICLE 000820455 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000820455 3367_ $$00$$2EndNote$$aJournal Article 000820455 520__ $$aCyclodextrins are cyclic oligosaccharides which are interesting as drug delivery systems, because they can be used as containers for pharmaceutical substances. We studied the Ludwig-Soret effect of $\alpha$-, $\beta$-, $\gamma$- and methyl-$\beta$-cyclodextrin in water and formamide by infrared thermal diffusion forced Rayleigh scattering (IR-TDFRS).In water the Soret coefficient, $S_{\mathrm{T}}$, of $\alpha$-, $\beta$- and $\gamma$-cyclodextrin increases with increasing temperature and shows a sign change from negative to positive around $T=35^\circ$C, while $S_{\mathrm{T}}$ of methyl-$\beta$-cyclodextrin is positive in the entire investigated temperature. In formamide $S_{\mathrm{T}}$-values of all cyclodextrins coincide and show a slight decrease with temperature. We discuss the obtained results and relate the $S_{\mathrm{T}}$-values to the different hydrogen bonding capabilities of the cyclodextrins and the used solvents. It turns out that the change of $S_{\mathrm{T}}$ with temperature correlates with the partition coefficient, log~$P$, which indicates that more hydrophilic substances show a more pronounced temperature sensitivity of $S_{\mathrm{T}}$. Additionally we obtained a surprising result measuring the refractive index contrast factor with temperature, $(\partial n/\partial T)_{c,p}$ of cyclodextrins in formamide, which might be explained by a complex formation between cyclodextrins and formamide. 000820455 536__ $$0G:(DE-HGF)POF3-551$$a551 - Functional Macromolecules and Complexes (POF3-551)$$cPOF3-551$$fPOF III$$x0 000820455 588__ $$aDataset connected to CrossRef 000820455 7001_ $$0P:(DE-Juel1)166572$$aNiether, Doreen$$b1$$eCorresponding author 000820455 7001_ $$0P:(DE-Juel1)131034$$aWiegand, Simone$$b2 000820455 7001_ $$0P:(DE-HGF)0$$aKita, Rio$$b3$$eCorresponding author 000820455 773__ $$0PERI:(DE-600)2004003-9$$a10.1140/epje/i2016-16086-5$$gVol. 39, no. 9, p. 86$$n9$$p86$$tThe @European physical journal / E$$v39$$x1292-895X$$y2016 000820455 8564_ $$uhttps://juser.fz-juelich.de/record/820455/files/Kazuya-IMT12-021.pdf$$yPublished on 2016-09-16. Available in OpenAccess from 2017-09-16. 000820455 8564_ $$uhttps://juser.fz-juelich.de/record/820455/files/Kazuya-IMT12-021.gif?subformat=icon$$xicon$$yPublished on 2016-09-16. Available in OpenAccess from 2017-09-16. 000820455 8564_ $$uhttps://juser.fz-juelich.de/record/820455/files/Kazuya-IMT12-021.jpg?subformat=icon-1440$$xicon-1440$$yPublished on 2016-09-16. Available in OpenAccess from 2017-09-16. 000820455 8564_ $$uhttps://juser.fz-juelich.de/record/820455/files/Kazuya-IMT12-021.jpg?subformat=icon-180$$xicon-180$$yPublished on 2016-09-16. Available in OpenAccess from 2017-09-16. 000820455 8564_ $$uhttps://juser.fz-juelich.de/record/820455/files/Kazuya-IMT12-021.jpg?subformat=icon-640$$xicon-640$$yPublished on 2016-09-16. Available in OpenAccess from 2017-09-16. 000820455 8564_ $$uhttps://juser.fz-juelich.de/record/820455/files/Kazuya-IMT12-021.pdf?subformat=pdfa$$xpdfa$$yPublished on 2016-09-16. 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