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Molecular material based on electropolymerized cobalt macrocycle for electrocatalytic hydrogen evolution

23-Apr-2015 | Stephane Rioual; Benoit Lescop; François Quentel; Frederic Gloaguen, Physical Chemistry Chemical Physics, 2015

Electrocatalytic material for the H2 evolution reaction (HER) in acidic aqueous solution has been prepared by electropolymerization of Co(II) dibenzotetraaza[14] annulene (CoTAA). Chemical analysis by X-ray photoelectron spectroscopy (XPS) confirms that the structural integrity of the [CoII-N4] ...

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Self-assembling corroles

23-Apr-2015 | Rafał Orłowski; Olena Vakuliuk; Maria Pia Gullo; Oksana Danylyuk; Barbara Ventura; Beata Koszarna; Anna Tarnowska; N ..., Chemical Communication, 2015

trans-A2B-corroles bearing –OCH2CONHR groups at the ortho position of the meso-phenyl substituent undergo self-organization both in the solid state as well as in solution. The lack of additional donor atoms induces sheet formation, but if the pyridine unit is present in the structure, more ...

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Model of vesicle tubulation and pearling induced by adsorbing particles

22-Apr-2015 | Yu-Cheng Su; Jeff Z Y Chen, Soft Matter, 2015

We study a basic theoretical model for a deformable vesicle immersed in a solution of particles that can adsorb to one of the two surfaces of a membrane. The model consists of an adsorption energy gain for the adsorbing particles and the Canham-Helfrich membrane bending energy, in which the ...

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Singlet oxygen generation from Li+@C60 nano-aggregates dispersed by laser irradiation in aqueous solution

22-Apr-2015 | Kei Ohkubo; Naoki Kohno; Yusuke Yamada; Shunichi Fukuzumi, Chemical Communication, 2015

Laser pulse irradiation of a deaerated aqueous solution containing the solid state lithium ion-encapsulated fullerene resulted in the formation of highly dispersed nano-aggregates (Li+@C60)n. Photoirradiation of an O2-saturated D2O solution containing (Li+@C60)n gave singlet oxygen with 55% ...

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Electrolyte ion adsorption and charge blocking effect at the hematite/aqueous solution interface: an electrochemical impedance study using multivariate data analysis

22-Apr-2015 | K. Shimizu; J. Nyström; P. Geladi; B. Lindholm-Sethson; J.-F. Boily, Physical Chemistry Chemical Physics, 2015

A model-free multivariate analysis using singular value decomposition is employed to refine an equivalent electrical circuit model in order to probe the electrochemical properties of the hematite/water interface in dilute NaCl and NH4Cl solutions using electrochemical impedance spectroscopy. The ...

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A Perspective in Renewable Energy Production from Biomass Pyrolysis - Challenges and Prospects

22-Apr-2015 | Ho, Yeek-Chia; Show, Kuan-Yeow, Organic Chemistry, 2015

Abstract: The worldwide demand for energy is ever escalating commensurate with increasing populations and development. While fossil fuels as the current major energy resource are shrinking drastically, combustion of fossil fuel releases greenhouse gases, which are the main culprit for ...

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Facile synthesis of nucleic acid–polymer amphiphiles and their self-assembly

22-Apr-2015 | Fei Jia; Xueguang Lu; Xuyu Tan; Ke Zhang, Chemical Communication, 2015

A solid-phase synthesis for nucleic acid–polymer amphiphiles is developed. Using this strategy, several DNA-b-polymer amphiphiles are synthesized, and their self-assembly in aqueous solution is investigated. This general method can in principle be extended to nearly all polymers synthesized by ...

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Preorganization of the catalytic Zn2+-binding site in the HNH nuclease motif – a solution study

19-Apr-2015 | Author(s): Eszter Németh , Milan Kožíšek , Gabriella K. Schilli , Béla Gyurcsik, Journal of Inorganic Biochemistry, 2015

Publication date: Available online 9 April 2015 Source:Journal of Inorganic Biochemistry Author(s): Eszter Németh , Milan Kožíšek , Gabriella K. Schilli , Béla Gyurcsik The structure of the active site in a metalloenzyme can be a key determinant of its metal ion binding affinity and ...

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Hyperbranched polytriazine grafted reduced graphene oxide and its application

18-Apr-2015 | Chao Liu, Hongxia Yan, Lingxia Yuan, Zhengyan Chen, Mengmeng Zhang, Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT In this article, cyanuric chloride (CC) and hexamethylenediamine (HMD) as raw material, the grafting of hyperbranched polytriazine onto reduced graphene oxide surface (HBP‐RGO) was achieved by the repeated nucleophilic substitution between chlorine groups of CC and amino groups of ...

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Surface modification of monolithic PolyHIPE Polymers for anionic functionality and their ion exchange behavior

18-Apr-2015 | Necla Barlık, Bülent Keskinler, M. Muhtar Kocakerim, Galip Akay, Journal of Applied Polymer Science, 2015

ABSTRACT Monolithic PolyHIPE Polymer (PHP), being a highly porous, low density, open cellular material was produced by polymerization of a high internal phase emulsion (HIPE) in which the polymerizable continuous phase consisted of monomers, styrene (STY), and divinyl benzene (DVB). The inner ...

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