نتایج جستجو برای: hyperbranched polymers

تعداد نتایج: 71794  

Journal: :Journal of materials chemistry. B 2014
Km Gattás-Asfura M Valdes E Celik Cl Stabler

The microencapsulation of cells has shown promise as a therapeutic vehicle for the treatment of a wide variety of diseases. While alginate microcapsules provide an ideal cell encapsulation material, polycations coatings are commonly employed to enhance stability and impart permselectivity. In this study, functionalized hyperbranched alginate and dendrimer polymers were used to generate discreet...

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2014
Michael J. Saxton

Scalable tracers are potentially a useful tool to examine diffusion mechanisms and to predict diffusion coefficients, particularly for hindered diffusion in complex, heterogeneous, or crowded systems. Scalable tracers are defined as a series of tracers varying in size but with the same shape, structure, surface chemistry, deformability, and diffusion mechanism. Both chemical homology and consta...

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2013
Masako Miki Hideki Horiuchi Yasuharu Yamada

Hyperbranched polyimide–silica hybrids (HBPI–silica HBDs) and hyperbranched polyimide–silica composites (HBPI–silica CPTs) were prepared, and their general and gas transport properties were investigated to clarify the effect of silica sources and preparation methods. HBPI–silica HBDs and HBPI–silica CPTs were synthesized by two-step polymerization of A2 + B3 monomer system via polyamic acid as ...

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Journal: :RSC Advances 2019

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Journal: :Express Polymer Letters 2022

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Journal: :Journal of the American Chemical Society 2015

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Journal: :Organic & Biomolecular Chemistry 2015

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Journal: :Chemical Communications 2016

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Journal: :Physical chemistry chemical physics : PCCP 2011
Li Zou Yan Liu Nan Ma Ermelinda Maçôas José M G Martinho Mika Pettersson Xingguo Chen Jingui Qin

A series of new hyperbranched polymers containing a 2,4,6-tris(thiophen-2-yl)-1,3,5-triazine core unit and polyfluorene chain arms have been synthesized via Suzuki coupling, and characterized by NMR, IR and GPC. All the polymers exhibit good thermal stability with a high decomposition temperature. By changing the 2,4,6-tris(thiophen-2-yl)-1,3,5-triazine/fluorene ratio the UV-vis absorption and ...

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Journal: :Nature Communications 2017

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