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Enantiopure Laterally‐Functionalized Alleno–Acetylenic Macrocycles: Synthesis, Chiroptical Properties, and Self‐Assembly in Aqueous Media

24-10-2014 | Manolis D. Tzirakis, Mariza N. Alberti, Haim Weissman, Boris Rybtchinski, François Diederich, Chemistry - A European Journal, 2014

Abstract A family of shape‐persistent alleno–acetylenic macrocycles (SPAAMs), peripherally decorated with structurally diverse pendant groups, has been synthesized and characterized in enantiomerically pure form. Their electronic circular dichroism (ECD) spectra feature a strong chiroptical ...


Preparation and evaluation of nonphosphate terpolymer as scale inhibitor and dispersant for Ca3(PO4)2, BaSO4, and Iron (III) hydroxide scales

18-10-2014 | Yunyun Bu, Yuming Zhou, Qingzhao Yao, Yiyi Chen, Wei Sun, Wendao Wu, Journal of Applied Polymer Science, 2014

ABSTRACT The polymeric scale inhibition and dispersion agents (PAYS) were prepared by graft copolymerization of acrylic acid, allylpolyethoxy carboxylate (APEY) and 2‐acrylamido‐2‐methyl‐propanesulfonic acid by using ammonium persulfate as a radical initiator in aqueous solution, among which ...


Atomistic Simulations of P(NDI2OD-T2) Morphologies: From Single Chain to Condensed Phases

15-10-2014 | Claudia Caddeo; Daniele Fazzi; Mario Caironi; Alessandro Mattoni, Journal of Physical Chemistry B, 2014

We investigate theoretically the structure, crystallinity, and solubility of a high-mobility n-type semiconducting copolymer, P(NDI2OD-T2), and we propose a set of new force field parameters. The force field is reparametrized against density functional theory (DFT) calculations, with the aim to ...


Study of synthesis parameters and active layer morphology of interfacially polymerized polyamide–polysulfone membranes

12-10-2014 | Author(s): Sanne Hermans , Roy Bernstein , Alexander Volodin , Ivo F.J. Vankelecom, Reactive and Functional Polymers, 2014

Publication date: Available online 30 September 2014 Source:Reactive and Functional Polymers Author(s): Sanne Hermans , Roy Bernstein , Alexander Volodin , Ivo F.J. Vankelecom Thin film composite (TFC) polyamide membranes were prepared on a polysulfone support membrane and the effect of ...


Supramolecular Fullerene Polymers and Networks Directed by Molecular Recognition between Calix[5]arene and C60

10-10-2014 | Takehiro Hirao, Masatoshi Tosaka, Shigeru Yamago, Takeharu Haino, Chemistry - A European Journal, 2014

Abstract A biscalix[5]arene–C60 supramolecular structure was utilized for the development of supramolecular fullerene polymers. Di‐ and tritopic hosts were developed to generate the linear and network supramolecular polymers through the complexation of a dumbbell‐shaped fullerene. The ...


Lignin Cross-Links with Cysteine- and Tyrosine-Containing Peptides under Biomimetic Conditions

10-10-2014 | Brett G. Diehl; Nicole R. Brown, Journal of Agricultural and Food Chemistry, 2014

The work presented here investigates the cross-linking of various nucleophilic amino acids with lignin under aqueous conditions, thus providing insight as to which amino acids might cross-link with lignin in planta. Lignin dehydrogenation polymer (DHP) was prepared in aqueous solutions that ...


Catalytic Behaviour of Transition Metal Cations In Electrosynthesis and Growth of Nanostructure Conducting Polypyrrole Films On/Between the Passive Cu Interdigital Electrodes: Application In Gas Sensors

09-10-2014 | Naader Alizadeh, Arash Ghoorchian, Electroanalysis, 2014

Abstract The electrosynthesis of nanostructured polypyrrole (PPy) on copper interdigital electrodes (Cu‐IDEs) surfaces was performed by anodic oxidation of pyrrole in the presence of oxalic acid in aqueous solution (passivation technique) by potentiostatic method. Some divalent transition ...


A facile route for the synthesis of nanostructured oxides and hydroxides of cobalt using laser ablation synthesis in solution (LASIS)

08-10-2014 | Sheng Hu; Chad Melton; Dibyendu Mukherjee, Physical Chemistry Chemical Physics, 2014

We used pulsed laser ablation synthesis in solution (LASIS) to produce cobalt oxide/hydroxide nanoparticles (NPs) with tailored size, morphology and structure at different laser fluences, wavelengths (532 and 1064 nm) and solvent conditions. Specifically, LASIS on bulk Co in the presence and ...


Tunable Photonic Crystals: Control of the Domain Spacings in Lamellar-Forming Diblock Copolymers by Swelling with Immiscible Selective Solvents and a Neutral Solvent

07-10-2014 | Akifumi Matsushita; Shigeru Okamoto, Macromolecules, 2014

The phase-separated morphology of three different molecular weights of polystyrene-block-polyisoprene (PS-b-PI) swollen with mixed solvents was studied by small-angle X-ray scattering (SAXS) and UV–vis spectroscopy. The solvent mixtures consisted of dimethyl phthalate (DMP) and n-tetradecane ...


Influence of emulsion types on nucleation kinetics and growth habit in the cooling crystallization

06-10-2014 | Jun‐Woo Kim, Kee‐Kahb Koo, Crystal Research and Technology, 2014

Experiments on unseeded batch cooling crystallization were made to investigate the influence of emulsion [solution in non‐solvent (S/NS) emulsion and non‐solvent in solution (NS/S) emulsion] on crystal size and growth habit of various materials such as hexahydro‐1,3,5‐trinitro‐1,3,5‐triazine, ...


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