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Showing 1 to 12 of 59 entries
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Small-Angle Neutron Scattering Study of Interplay of Attractive and Repulsive Interactions in Nanoparticle-Polymer System.

Langmuir : the ACS journal of surfaces and colloids

Kumar S, Aswal VK, Kohlbrecher J.
PMID: 26795459
Langmuir. 2016 Feb 16;32(6):1450-9. doi: 10.1021/acs.langmuir.5b03998. Epub 2016 Feb 02.

The phase behavior of nanoparticle (silica)-polymer (polyethylene glycol) system without and with an electrolyte (NaCl) has been studied. It is observed that nanoparticle-polymer system behaves very differently in the presence of electrolyte. In the absence of electrolyte, the nanoparticle-polymer...

Visual Search in the Real World: Color Vision Deficiency Affects Peripheral Guidance, but Leaves Foveal Verification Largely Unaffected.

Frontiers in human neuroscience

Kugler G, 't Hart BM, Kohlbecher S, Bartl K, Schumann F, Einhäuser W, Schneider E.
PMID: 26733851
Front Hum Neurosci. 2015 Dec 22;9:680. doi: 10.3389/fnhum.2015.00680. eCollection 2015.

BACKGROUND: People with color vision deficiencies report numerous limitations in daily life, restricting, for example, their access to some professions. However, they use basic color terms systematically and in a similar manner as people with normal color vision. We...

Size and shape of micelles studied by means of SANS, PCS, and FCS.

Langmuir : the ACS journal of surfaces and colloids

Gapiński J, Szymański J, Wilk A, Kohlbrecher J, Patkowski A, Hołyst R.
PMID: 20345164
Langmuir. 2010 Jun 15;26(12):9304-14. doi: 10.1021/la100181d.

The hexaethylene glycol monododecyl ether (C(12)E(6)) micelles at concentrations up to 10% have been studied in their isotropic phase (10-48 degrees C) by means of small angle neutron scattering (SANS) and photon correlation spectroscopy (PCS). The SANS data obtained...

Measured total cross sections of slow neutrons scattered by solid deuterium and implications for ultracold neutron sources.

Physical review letters

Atchison F, Blau B, van den Brandt B, Bryś T, Daum M, Fierlinger P, Hautle P, Henneck R, Heule S, Kirch K, Kohlbrecher J, Kühne G, Konter JA, Pichlmaier A, Wokaun A, Bodek K, Kasprzak M, Kuźniak M, Geltenbort P, Zmeskal J.
PMID: 16383898
Phys Rev Lett. 2005 Oct 28;95(18):182502. doi: 10.1103/PhysRevLett.95.182502. Epub 2005 Oct 25.

The total scattering cross sections for slow neutrons with energies in the range 100 neV to 3 meV for solid ortho-2H2 at 18 and 5 K, frozen from the liquid, have been measured. The 18 K cross sections are...

The effect of temperature, composition and alcohols on the microstructures of catanionic mixtures of sodium dodecylsulfate and cetyltrimethylammonium bromide in water.

Soft matter

Rajkhowa S, Mahiuddin S, Dey J, Kumar S, Aswal VK, Biswas R, Kohlbrecher J, Ismail K.
PMID: 28443931
Soft Matter. 2017 May 21;13(19):3556-3567. doi: 10.1039/c7sm00342k. Epub 2017 Apr 26.

The influence of mixing protocol, composition, temperature, ageing and added alcohols on the characteristics of the microstructures of sodium dodecylsulfate (SDS) + cetyltrimethylammonium bromide (CTAB) mixtures has been investigated in this paper. In this catanionic mixture (1 weight% total...

The Connection between Biaxial Orientation and Shear Thinning for Quasi-Ideal Rods.

Polymers

Lang C, Kohlbrecher J, Porcar L, Lettinga MP.
PMID: 30974567
Polymers (Basel). 2016 Aug 09;8(8). doi: 10.3390/polym8080291.

The complete orientational ordering tensor of quasi-ideal colloidal rods is obtained as a function of shear rate by performing rheo-SANS (rheology with small angle neutron scattering) measurements on isotropic fd-virus suspensions in the two relevant scattering planes, the flow-gradient...

SANS study of mixed cholesteric cellulose nanocrystal - gold nanorod suspensions.

Chemical communications (Cambridge, England)

Van Rie J, González-Rubio G, Kumar S, Schütz C, Kohlbrecher J, Vanroelen M, Van Gerven T, Deschaume O, Bartic C, Liz-Marzán LM, Salazar-Alvarez G, Thielemans W.
PMID: 32996921
Chem Commun (Camb). 2020 Nov 04;56(85):13001-13004. doi: 10.1039/d0cc04845c. Epub 2020 Sep 30.

Self-assembly of cellulose nanocrystals (CNCs) doped with anisotropic gold nanorods (AuNRs) was studied by small-angle neutron scattering. Correlation distances and structured domains were analysed to determine the influence of CNC and AuNR concentration on structuring. The transfer of the...

Role of Protein-Water Interface in the Stacking Interactions of Granum Thylakoid Membranes-As Revealed by the Effects of Hofmeister Salts.

Frontiers in plant science

Zsiros O, Ünnep R, Nagy G, Almásy L, Patai R, Székely NK, Kohlbrecher J, Garab G, Dér A, Kovács L.
PMID: 32922427
Front Plant Sci. 2020 Aug 14;11:1257. doi: 10.3389/fpls.2020.01257. eCollection 2020.

The thylakoid membranes of vascular plants are differentiated into stacked granum and unstacked stroma regions. The formation of grana is triggered by the macrodomain formation of photosystem II and light-harvesting complex II (PSII-LHCII) and thus their lateral segregation from...

DNA ionogel: Structure and self-assembly.

Physical chemistry chemical physics : PCCP

Pandey PK, Rawat K, Aswal VK, Kohlbrecher J, Bohidar HB.
PMID: 27929161
Phys Chem Chem Phys. 2016 Dec 21;19(1):804-812. doi: 10.1039/c6cp06229f.

DNA dissolved in ionic liquid (IL) solution (1-ethyl-3-methylimidazolium chloride, [C2mim][Cl]) showed a transition to the gel phase ([DNA] ≥ 1% (w/v)). The gelation time was 400 s for the 1% [IL] sample which reduced to 260 s for 5%...

Determination and evaluation of the nonadditivity in wetting of molecularly heterogeneous surfaces.

Proceedings of the National Academy of Sciences of the United States of America

Luo Z, Murello A, Wilkins DM, Kovacik F, Kohlbrecher J, Radulescu A, Okur HI, Ong QK, Roke S, Ceriotti M, Stellacci F.
PMID: 31792179
Proc Natl Acad Sci U S A. 2019 Dec 17;116(51):25516-25523. doi: 10.1073/pnas.1916180116. Epub 2019 Dec 02.

The interface between water and folded proteins is very complex. Proteins have "patchy" solvent-accessible areas composed of domains of varying hydrophobicity. The textbook understanding is that these domains contribute additively to interfacial properties (Cassie's equation, CE). An ever-growing number...

Concatenating Suzuki Arylation and Buchwald-Hartwig Amination by A Sequentially Pd-Catalyzed One-Pot Process-Consecutive Three-Component Synthesis of C,N-Diarylated Heterocycles.

Chemistry (Weinheim an der Bergstrasse, Germany)

Mayer L, Kohlbecher R, Müller TJJ.
PMID: 32815662
Chemistry. 2020 Nov 26;26(66):15130-15134. doi: 10.1002/chem.202003837. Epub 2020 Oct 19.

The concatenation of Suzuki coupling and Buchwald-Hartwig amination in a consecutive multicomponent reaction opens a concise, modular and efficient one-pot approach to diversely functionalized heterocycles, as exemplified for 3,10-diaryl 10H-phenothiazines, 3,9-diaryl 9H-carbazoles, and 1,5-diaryl 1H-indoles, in high yields starting...

Ion-Induced Formation of Nanocrystalline Cellulose Colloidal Glasses Containing Nematic Domains.

Langmuir : the ACS journal of surfaces and colloids

Bertsch P, Sánchez-Ferrer A, Bagnani M, Isabettini S, Kohlbrecher J, Mezzenga R, Fischer P.
PMID: 30810320
Langmuir. 2019 Mar 19;35(11):4117-4124. doi: 10.1021/acs.langmuir.9b00281. Epub 2019 Mar 08.

Controlling the assembly of colloids in dispersion is a fundamental approach toward the production of functional materials. Nanocrystalline cellulose (NCC) is a charged nanoparticle whose colloidal interactions can be modulated from repulsive to attractive by increasing ionic strength. Here,...

Showing 1 to 12 of 59 entries