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Design Concepts in Absorbance Optical Systems for Analytical Ultracentrifugation

03-Jul-2018 | Joseph Pearson; Marcel Hofstetter; Thomas Dekorsy; Michael Totzeck; Helmut Coelfen, Analyst, 2018

Analytical ultracentrifugation is a powerful technique for analyzing particles in solution, and has proved valuable for a wide range of applications in chemistry, biochemistry and material sciences for many years. The field is presently seeing a resurgence of instrument development from ...


Synthesis of cationic molybdenum-cobalt heterometallic clusters protected against hydrolysis by macrocyclic triazacyclononane complexes

03-Jul-2018 | Sugiarto .; Tomoko Tagami; Keisuke Kawamoto; Yoshihito Hayashi, Dalton Transactions, 2018

Four kinds of cobalt-polyoxomolybdenum clusters were synthesized by a combination of polyoxomolybdates and a Co-tacn (tacn = 1,4,7-triazacyclononane) complex. The heterometallic polynuclear clusters were obtained by the reaction of Na2MoO4 and [Co(tacn)(H2O)3](CF3SO3)3∙H2O in aqueous solution. ...


Directed Assembly of Fullerene on Modified Au(111) Electrodes

03-Jul-2018 | Zhen-Feng Cai; Wei-long Dong; Ting Chen; Huijuan Yan; Dong Wang; Wei Xu; Li-jun Wan, Chemical Communication, 2018

Here we show a conceptual approach to realize the scanning probe based induced-assembly of fullerene (C60) molecules on top of a buffer organic adlayer at room temperature in solution environment. The realization of spatially-defined C60 assembly is attributed to modulation of substrate-molecular ...


A thermoresponsive dynamic polymer brush fabricated by the segregation of amphiphilic diblock copolymers

03-Jul-2018 | Hirokazu Tanoue; Kazuma Inoue; Norifumi L. Yamada; Kohzo Ito; Syo Miyao; Takashi Ishizone; Hideaki Yokoyama, Soft Matter, 2018

A highly dense polymer brush was previously fabricated by the spontaneous segregation of amphiphilic diblock copolymers in an elastomer matrix into water and a hydrophobic polymer interface and named a ‘dynamic polymer brush’. We fabricated a lower critical solution temperature (LCST)-type ...


“Tubular J-Aggregates of a New Thiacarbocyanine Cy5 Dye for the Far-red Spectral Region – A Spectroscopic and Cryo-Transmission Electron Microscopy Study”

03-Jul-2018 | Hans von Berlepsch; Christoph Bӧttcher, Physical Chemistry Chemical Physics, 2018

The aggregation behavior of a phenol-substituted thiacarbocyanine Cy5 dye (5-chloro-2-[5-[5-chloro-3-(4-sulfobutyl)-3H-benzothiazol-2-ylidene]-3-phenyl-penta-1,3-dienyl]-3-(4-sulfo¬butyl)-benzothiazol-3-ium hydroxide, inner salt, triethylammonium salt) in aqueous solution is investigated using ...


Syntheses, Crystal-Solution Structures and Magnetic Properties of a Series of Decanuclear Heterometallic [LnIII2CoII4CoIII4] (Ln= Eu, Gd, Tb, Dy) Clusters

03-Jul-2018 | You-Zhu Yu; Yue-Qiao Hu; Yu-Hua Guo; Yong-Sheng Niu; Liguo Yang; Haixiang Song; Yan-Hong Shen; Xiao-Ming Zheng; Sha ..., Dalton Transactions, 2018

Four unprecedented decanuclear heterometallic [Ln2CoII4CoIII4] clusters based on diethanolamine ligand (H2dea), namely [Eu2CoII4CoIII4(dea)8(HCOO)4(OH)2(Cl)2(CH3OH)2]Cl2•4CH3OH•2H2O (1) , [Gd2CoII4CoIII4(dea)8(HCOO)4(OH)2(Cl)2(CH3OH)2]Cl2•4CH3OH•2H2O (2), ...


Splay–density coupling in semiflexible main-chain nematic polymers with hairpins

03-Jul-2018 | Aleksandar Popadić; Daniel Svenšek; Rudolf Podgornik; Kostas Daoulas; Matej Praprotnik, Soft Matter, 2018

A main-chain nematic polymer melt/solution exhibits macroscopic orientational order of main polymer chains, i.e., a preferred (nematic) direction. It has long been known that in such polymeric liquid crystals spatial density/concentration variations and distortions of the nematic direction are ...


Charge Regulating Macro-ions in Salt Solutions: Screening Properties and Electrostatic Interactions

03-Jul-2018 | Yael Avni; David Andelman; Tomer Markovich; Rudolf Podgornik, Soft Matter, 2018

We revisit the charge-regulation mechanism of macro-ions and apply it to mobile macro-ions in a bathing salt solution. In particular, we examine the effects of correlation between various adsorption/desorption sites and analyze the collective behavior in terms of the solution effective screening ...


A Rough Guide to Molecular Solid Solution: Design, Synthesis and Characterization of Mixed Crystals.

03-Jul-2018 | matteo lusi, CrystEngComm, 2018

Crystalline solid solutions are a long known class of materials that enables the fine tuning of a material structure and properties. Some of them like metal alloys have been employed in everyday life for thousands of years. As result, these phases represent an important part of materials science. ...


Structural investigations of SnS1-xSex solid solution synthesized from chalcogeno-carboxylate complexes of organo-tin by the colloidal and solvent-less route

03-Jul-2018 | Malik Dilshad Khan; Muhammad Aamir; Ghulam Murtuza; Mohammad A Malik; Neerish Revaprasadu, Dalton Transactions, 2018

Tin chalcogenides are important semiconducting materials due to their non-toxicity, cost effectiveness and layered structure. In this study, a facile synthetic route has been used for the synthesis of a bis(selenobenzoato)dibutyltin(IV) complex, and used along with the ...


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