نتایج جستجو برای: smart polymer

تعداد نتایج: 166721  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2002
Tsuyoshi Shimoboji Edmund Larenas Tim Fowler Samarth Kulkarni Allan S Hoffman Patrick S Stayton

The ability to photoregulate enzyme activities could provide important new opportunities for development of diagnostic assays, sequential bioprocessing, and lab assays in both traditional and microfluidic formats. We show here that the photoinduced changes in the size and hydration of a "smart" polymer chain coil can be used to regulate substrate access and enzyme activity when conjugated to th...

Journal: :Chemical communications 2013
Yibo Dou Ting Pan Awu Zhou Simin Xu Xiaoxi Liu Jingbin Han Min Wei David G Evans Xue Duan

A smart supercapacitor was fabricated by loading a thermosensitive polymer P(NIPAM-co-SPMA) onto the surface of NiAl-layered double hydroxide (LDH) nanowalls grown on a flexible Ni foil substrate, which displays temperature-triggered on-off ion channels for controlling the electrochemical behavior.

2016
F. Novio J. Simmchen N. Vazquez

Coordination polymer particles (CPPs) have recently emerged as a new family of nanoparticles. The potential multifunctionality of these nanosystems and the flexibility of their coordination chemistry open new perspectives in different fields, including medicine. This review outlines the most recent advances in this field, from CPP synthesis to their use as smart drug delivery systems, bioimagin...

Journal: :Angewandte Chemie 2012
Zhiqiang Cao Luo Mi Jose Mendiola Jean-Rene Ella-Menye Lei Zhang Hong Xue Shaoyi Jiang

Attack or defend! A smart polymer surface has two reversibly switchable equilibrium states, a cationic N,N-dimethyl-2-morpholinone (CB-Ring) and a zwitterionic carboxy betaine (CB-OH). CB-Ring will kill bacteria upon contact under dry conditions, whereas CB-OH will release the previously attached and dead bacteria and further resist adhesion of bacteria under wet conditions.

2012
Rong-Hua Ma Yu-Chia Chen

A BIPV-powered smart window comprising a building-integrated photovoltaic (BIPV) panel and an all-solid-state electrochromic (EC) stack is proposed. In the proposed device, the output voltage of the BIPV panel varies in accordance with the intensity of the incident light and is modulated in such a way as to generate the EC stack voltage required to maintain the indoor illuminance within a speci...

Journal: :European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V 2009
Sungwon Kim Jong-Ho Kim Oju Jeon Ick Chan Kwon Kinam Park

Engineered polymers have been utilized for developing advanced drug delivery systems. The development of such polymers has caused advances in polymer chemistry, which, in turn, has resulted in smart polymers that can respond to changes in environmental condition such as temperature, pH, and biomolecules. The responses vary widely from swelling/deswelling to degradation. Drug-polymer conjugates ...

Journal: :Chemical communications 2013
Yongping Hou Longcheng Gao Shile Feng Yuan Chen Yan Xue Lei Jiang Yongmei Zheng

We designed a kind of smart bioinspired fiber using the N-isopropylacrylamide (NIPAAm) polymer, with roughness and curvature features similar to those of wetted spider silk. The motion of tiny water droplets can be manipulated reversibly in directions by the effective cooperation of multi-gradients such as roughness, curvature and temperature-responsive wettability.

Journal: :Journal of colloid and interface science 2012
Thomas M Ruhland Paul M Reichstein Alexander P Majewski Andreas Walther Axel H E Müller

We present the preparation and the characterization of the solution behavior and functional properties of superparamagnetic and/or fluorescent, thermo-responsive inorganic/organic hybrid particles with an intermediate protective silica shell and a smart polymer corona. These well-defined multifunctional nanogels were prepared via two consecutive encapsulation processes of superparamagnetic Fe(2...

2017
Yuting Xiong Ge Jiang Minmin Li Guangyan Qing Xiuling Li Xinmiao Liang Taolei Sun

Biological systems that utilize multiple weak non-covalent interactions and hierarchical assemblies to achieve various bio-functions bring much inspiration for the design of artificial biomaterials. However, it remains a big challenge to correlate underlying biomolecule interactions with macroscopic level of materials, for example, recognizing such weak interaction, further transforming it into...

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