@article{RuizHassReich2012,
  author    = {Ruiz, Salome Vargas and Hass, Roland and Reich, Oliver},
  title     = {Optical monitoring of milk fat phase transition within homogenized fresh milk by Photon Density Wave spectroscopy},
  series = {International dairy journal},
  volume    = {26},
  journal   = {International dairy journal},
  number    = {2},
  publisher = {Elsevier},
  address   = {Oxford},
  issn      = {0958-6946},
  doi       = {10.1016/j.idairyj.2012.03.012},
  pages     = {120 -- 126},
  year      = {2012},
  abstract  = {Photon Density Wave (PDW) spectroscopy was applied for temperature dependent monitoring of melting and crystallization of milk fat within homogenized fresh milk. As an in-line process analytical technique, PDW spectroscopy quantifies continuously the optical properties of turbid material, providing an insight into its structural processes. Here, the measured absorption coefficients reflect temperature as well as fat content of milk and the reduced scattering coefficients probe physical changes of the light scattering fat droplets and casein micelles. Thermal processing reveals breakpoints within the temperature trend of the reduced scattering coefficient of fat containing milk. Found at 16 degrees C and 24 degrees C while cooling and heating, respectively, they are associated to the phase transitions of milk fat. Continuous isothermal measurement of the optical coefficients showed that the crystallization process requires several hours. The strongly changing reduced scattering coefficient implies that the thermal history of milk will have a major impact on any method based on light scattering as quantitative analytical technique.},
  language  = {en}
}
@article{RukungaMuregiOmaretal.2008,
  author    = {Rukunga, G. M. and Muregi, F. W. and Omar, S. A. and Gathirwa, J. W. and Muthaura, C. N. and Peter, Martin G.},
  title     = {Anti-plasmodial activity of the extracts and two sesquiterpenes from Cyperus articulatus},
  issn      = {0367-326X},
  year      = {2008},
  abstract  = {Two sesquiterpenes, corymbolone and mustakone, isolated from the chloroform extract of the rhizomes of Cyperus articulatus, exhibited significant anti-plasmodial properties. Mustakone was approximately ten times more active than corymbolone against the sensitive strains of the Plasmodium falciparum.},
  language  = {en}
}
@article{RullensLaschewskyDevillers2006,
  author    = {Rullens, F and Laschewsky, Andr{\´e} and Devillers, M},
  title     = {Bulk and thin films of bismuth vanadates prepared from hybrid materials made from an organic polymer and inorganic salts},
  doi       = {10.1021/Cm051516q},
  year      = {2006},
  abstract  = {A new precursor route for the preparation of bulk oxides and thin films of bismuth vanadates is proposed. The method involves the thermal treatment under air and mild conditions of hybrid organic-inorganic precursors, made from a zwitterionic salt-free polymer matrix and selected inorganic species. Monoclinic BiVO4 was obtained in the form of bulk oxide by calcination of the powdered homogeneous hybrid materials at 600 degrees C, from precursors containing Bi and V in stoichiometric amounts. In the same way, thermodiffractometry studies performed on a hybrid material exhibiting a Bi/ V molar ratio of 2 revealed that the ionic conductor gamma-Bi4V2O11 phase can be stabilized under very soft thermal conditions (300 degrees C). Additionally, thin films of yellow monoclinic BiVO4 were for the first time fabricated, by thermal treatment of the same hybrid polymeric precursors deposited on quartz substrates by spin coating, using a layer- by-layer technique. The presence of the target phase at the surface of the plates was confirmed by X-ray diffraction as well as UV-vis measurements},
  language  = {en}
}
@article{RullensVuillaumeMoussaetal.2006,
  author    = {Rullens, F and Vuillaume, Pascal Y. and Moussa, Alain and Habib-Jiwan, Jean-Louis and Laschewsky, Andr{\´e}},
  title     = {Ordered polyelectrolyte "Multilayers". 7. Hybrid films self-assembled from fluorescent and smectogenic poly(diallylammonium) salts and delaminated clay},
  doi       = {10.1021/Cm060209x},
  year      = {2006},
  abstract  = {Homopolymers were prepared from diallylammonium monomers bearing 4-methylcoumarin and 4-cyanobiphenyl as fluorescent and mesogenic side groups, as well as their copolymers with diallyldimethylammonium chloride (DADMAC). Organic-inorganic hybrid films were electrostatically self-assembled via the layer-by-layer technique on silicon wafers and quartz plates from the chromophore-bearing polymers and an exfoliated synthetic hectorite. Photophysical studies performed in solution as well as in the self-assembled films demonstrated only a weak tendency for aggregation of the chromophores in the macromolecules. Moreover, assemblies made from the polymers carrying the cyanobiphenyl mesogen were found to exhibit a pronounced internal order},
  language  = {en}
}
@article{RullensDevillersLaschewsky2004,
  author    = {Rullens, F. and Devillers, M. and Laschewsky, Andr{\´e}},
  title     = {New regular, amphiphilic poly(ampholyte)s : synthesis and characterization},
  year      = {2004},
  abstract  = {Hydrophobically substituted diallylamines bearing a hexyl, dodecyl, or octadecyl chain were synthesized and homopolymerized as hydrochlorides. Copolymerixation of the diallylamines with maleic acid produces alternating copolymers. The copolymers behave as amphiphilic polyampholytes and dissolve best in the acidic or in the basic form. Only the colpolymer with the hexyl chain could be dissolved in aqueous solvents and shows hydrophobic associaiton. The copolymers with the longer alkyl chains require polar protic organic solvents. All polymers are amorphous, but show a superstructure in bulk due to their amphiphilicity},
  language  = {en}
}
@article{RumschoettelKosmellaPrietzeletal.2017,
  author    = {Rumschoettel, Jens and Kosmella, Sabine and Prietzel, Claudia Christina and Appelhans, Dietmar and Koetz, Joachim},
  title     = {DNA polyplexes with dendritic glycopolymer-entrapped gold nanoparticles},
  series = {Colloids and surfaces : an international journal devoted to fundamental and applied research on colloid and interfacial phenomena in relation to systems of biological origin ; B, Biointerfaces},
  volume    = {154},
  journal   = {Colloids and surfaces : an international journal devoted to fundamental and applied research on colloid and interfacial phenomena in relation to systems of biological origin ; B, Biointerfaces},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0927-7765},
  doi       = {10.1016/j.colsurfb.2017.03.001},
  pages     = {74 -- 81},
  year      = {2017},
  abstract  = {Polyplexes, composed of Salmon DNA and very small gold nanoparticles embedded into a dendritic glycopolymer architecture of sugar-modified poly(ethyleneimine) (PEI-Mal) with a molar mass of about 25,000 g/mol, were characterized by dynamic light scattering (DLS), zeta potential measurements, micro differential scanning calorimetry (mu-DSC) and transmission electron microscopy (TEM). The PEI-Mal-entrapped gold nanoparticles of about 2 nm in diameter influence the polyplex formation of the hyperbranched PEI containing bulky maltose, and in consequence the DNA is more compactized in the inner part of spherical polyplex particles of about 150 nm in diameter. The resulting more compact core shell polyplex particles with embedded gold nanoparticles in the outer polymer shell will be used as components in forthcoming gene delivery experiments. (C) 2017 Elsevier B.V. All rights reserved.},
  language  = {en}
}
@phdthesis{Rumschoettel2018,
  author    = {Rumsch{\"o}ttel, Jens},
  title     = {Charakterisierung von DNA-Polyplexen mit verzweigten reinen und Maltose modifizierten Poly(ethyleniminen) sowie Polyplexen mit Goldnanopartikeln},
  school      = {Universit{\"a}t Potsdam},
  pages     = {125},
  year      = {2018},
  language  = {de}
}
@article{RumschoettelBausKosmellaetal.2017,
  author    = {Rumsch{\"o}ttel, Jens and Baus, Susann and Kosmella, Sabine and Appelhans, Dietmar and Koetz, Joachim},
  title     = {Incorporation of DNA/PEI polyplexes into gelatin/chitosan hydrogel scaffolds},
  series = {Composite interfaces},
  volume    = {25},
  journal   = {Composite interfaces},
  number    = {1},
  publisher = {Routledge, Taylor \& Francis Group},
  address   = {Abingdon},
  issn      = {1568-5543},
  doi       = {10.1080/09276440.2017.1302725},
  pages     = {1 -- 11},
  year      = {2017},
  abstract  = {Polyplexes between a double-stranded Salmon DNA and hyperbranched poly(ethyleneimine) (PEI) as well as a maltosylated PEI-Mal were incorporated into a gelatin/chitosan hydrogel scaffold. Calorimetric experiments of the polyplexes show a decrease of the melting temperature in presence of PEI and a peak splitting in presence of PEI-Mal, which can be interpreted to a partial compaction of the DNA strands in presence of PEI-Mal. When the polyplexes are incorporated into a gelatin/chitosan scaffold in the swollen state, the DNA melting peaks at 90 and 93 degrees C, respectively, indicate in both cases the release of the DNA at the surface of the hydrogel scaffold in a more compact form. Specific interactions between the PEI-Mal shell and gelatin are responsible for the tuning of the release properties in presence of the maltose units in the hyperbranched PEI.},
  language  = {en}
}
@article{RumschoettelKosmellaPrietzeletal.2016,
  author    = {Rumsch{\"o}ttel, Jens and Kosmella, Sabine and Prietzel, Claudia Christina and Appelhans, Dietmar and Koetz, Joachim},
  title     = {Change in size, morphology and stability of DNA polyplexes with hyperbranched poly(ethyleneimines) containing bulky maltose units},
  series = {Colloids and surfaces : an international journal devoted to fundamental and applied research on colloid and interfacial phenomena in relation to systems of biological origin ; B, Biointerfaces},
  volume    = {138},
  journal   = {Colloids and surfaces : an international journal devoted to fundamental and applied research on colloid and interfacial phenomena in relation to systems of biological origin ; B, Biointerfaces},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0927-7765},
  doi       = {10.1016/j.colsurfb.2015.11.061},
  pages     = {78 -- 85},
  year      = {2016},
  abstract  = {Polyplexes between Salmon DNA and non-modified hyperbranched poly(ethyleneimines) of varying molar mass, i.e., PEI(5 k) with 5000 g/mol and PEI(25 k) with 25,000 g/mol, and modified PEI(5 k) with maltose units (PEI-Mal) were investigated in dependence on the molar N/P ratio by using dynamic light scattering (DLS), zeta potential measurements, micro differential scanning calorimetry (mu-DSC), scanning-transmission electron microscopy (STEM), and cryo-scanning electron microscopy (cryo-SEM). A reloading of the polyplexes can be observed by adding the unmodified PEI samples of different molar mass. In excess of PEI a morphological transition from core-shell particles (at N/P 8) to loosely packed onion-like polyplexes (at N/P 40) is observed. The shift of the DSC melting peak from 88 degrees C to 76 degrees C indicates a destabilization of the DNA double helix due to the complexation with the unmodified PEI. Experiments with the maltose-modified PEI show a reloading already at a lower N/P ratio. Due to the presence of the sugar units in the periphery of the polycation electrostatic interactions between DNA become weaker, but cooperative H-bonding forces are reinforced. The resulting less-toxic, more compact polyplexes in excess of the PEI-Mal with two melting points and well distributed DNA segments are of special interest for extended gene delivery experiments. (C) 2015 Elsevier B.V. All rights reserved.},
  language  = {en}
}
@phdthesis{Ruppelt2000,
  author    = {Ruppelt, Dirk},
  title     = {Polyelektrolyt-Tensid-Komplexe als elektrooptische Materialien},
  pages     = {101 S.},
  year      = {2000},
  language  = {de}
}