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Tuning Phase Transition Temperature of Thermal-responsive OEGylated Poly-L-glutamate via Random Copolymerization with L-Alanine

18-11-2014 | Lei Yu; Wenxin Fu; Zhibo Li, Soft Matter, 2014

Two series of copolymers were prepared by ring-opening polymerization (ROP) of γ-(2-methoxyethoxy)esteryl-L-glutamate (L-EG2Glu) N-carboxyanhydride (NCA) and L-alanine (L-Ala) NCA using HMDS and PEG-NH2 as initiator, respectively. Poly-(L-EG2Glu-co-L-Ala) displayed lower critical solution ...

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Temperature-responsive nanobiocatalysts with an upper critical solution temperature for high performance biotransformation and easy catalyst recycling: efficient hydrolysis of cellulose to glucose

18-11-2014 | Priscilia A. Limadinata; Aitao Li; Zhi Li, Green Chemistry, 2014

Development of immobilized enzyme for efficient biocatalysis and catalyst recycling is of great importance in cost-effective and green chemical synthesis, with the hydrolysis of cellulose to glucose for the utilization of lignocellulosic biomass as a prominent and challenging example. We ...

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Raman Spectra, Infrared Spectra, and Microwave Dielectric Properties of Low‐Temperature Firing [(Li0.5Ln0.5)1−xCax]MoO4 (Ln = Sm and Nd) Solid Solution Ceramics with Scheelite Structure

15-11-2014 | Hai‐Hong Xi, Di Zhou, Hui‐Dong Xie, Bin He, Qiu‐Ping Wang, Journal of the American Ceramic Society, 2014

In this work, a series of scheelite solid solution [(Li0.5Ln0.5)1−xCax]MoO4 (Ln=Sm and Nd; x=0.20, 0.40, 0.60, 0.70, 0.80, 0.85, 0.90) ceramics were prepared by conventional solid‐state reaction method. The sintering temperature was lowered to 925°C by (Li0.5Ln0.5)2+ substituting for Ca2+ in ...

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Molecules, Vol. 19, Pages 18705-18720: Removing Tannins from Medicinal Plant Extracts Using an Alkaline Ethanol Precipitation Process: A Case Study of Danshen Injection

14-11-2014 | Gong, Xingchu ; Li, Yao ; Qu, Haibin, Molecules, 2014

The alkaline ethanol precipitation process is investigated as an example of a technique for the removal of tannins extracted from Salviae miltiorrhizae Radix et Rhizoma for the manufacture of Danshen injection. More than 90% of the tannins can be removed. However, the recoveries of danshensu, ...

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Anomalous Diffusion in Thermoresponsive Polymer–Clay Composite Hydrogels Probed by Wide-Field Fluorescence Microscopy

13-11-2014 | Beate Stempfle; Anna Große; Bernhard Ferse; Karl-Friedrich Arndt; Dominik Wöll, Langmuir, 2014

Thermoresponsive materials exhibit an enormous potential for tissue engineering, separation systems, and drug delivery. We investigated the diffusion of laponite clay nanoparticles, which serve as physical cross-linkers to achieve improved material properties in poly(N-isopropylacrylamide) ...

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Control of the Structural Stability of α-Crystallin under Thermal and Chemical Stress: The Role of Carnosine

13-11-2014 | Valentina Villari; Francesco Attanasio; Norberto Micali, Journal of Physical Chemistry B, 2014

The structural properties of α-crystallin, the major protein of the eye lens of mammals, in aqueous solution are investigated by means of small angle X-ray and dynamic light scattering. The research interest is devoted in particular to the effect of carnosine in protecting the protein under ...

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Solution Synthesis of Metal Silicide Nanoparticles

12-11-2014 | Joshua M. McEnaney; Raymond E. Schaak, Inorganic Chemistry, 2014

Transition-metal silicides are part of an important family of intermetallic compounds, but the high-temperature reactions that are generally required to synthesize them preclude the formation of colloidal nanoparticles. Here, we show that palladium, copper, and nickel nanoparticles react with ...

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Redox and Photochemistry of Bis(terpyridine)ruthenium(II) Amino Acids and Their Amide Conjugates – from Understanding to Applications (Eur. J. Inorg. Chem. 32/2014)

11-11-2014 | Aaron Breivogel, Christoph Kreitner, Katja Heinze, European Journal of Inorganic Chemistry, 2014

The cover picture shows push‐pull‐substituted bis(terpyridine)ruthenium(II) amino acid [Ru(4′‐tpy‐COOH)(4′‐tpy‐NH2)]2+ (tpy = 2,2′;6′,2″‐terpyridine) and its interaction with light, as well as with electron donors and electron acceptors, in the front. This multifunctional complex is ...

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Solution processed organic thermoelectrics: towards flexible thermoelectric modules

11-11-2014 | Yani Chen; Yan Zhao; Ziqi Liang, Energy & Environmental Science, 2014

Organic semiconductor materials have advantages of low cost, light weight, mechanical flexibility and low-temperature solution processability over large areas, enabling the development of personal, portable, and flexible thermal modules. This review article summarizes the recent progress made in ...

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Effect of Isomerism on Molecular Packing and Gas Transport Properties of Poly(benzoxazole-co-imide)s

11-11-2014 | Yongbing Zhuang; Jong Geun Seong; Yu Seong Do; Hye Jin Jo; Moon Joo Lee; Gang Wang; Michael D. Guiver; Young Moo Lee, Macromolecules, 2014

A facile approach to synthesize poly(benzoxazole-co-imide)s without thermal rearrangement at high temperature is proposed. Poly(benzoxazole-co-imide)s with improved mechanical and solution-processable properties were prepared through polycondensation of 4,4′-(hexafluoroisopropylidene) diphthalic ...

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