نتایج جستجو برای: responsive polymer

تعداد نتایج: 151027  

Journal: :Chemical communications 2014
Jin Zhang Shusen You Shouke Yan Klaus Müllen Wantai Yang Meizhen Yin

pH-responsive perylene-ended amphiphilic homopolymers can self-assemble into flower-like structures by pH-adjustment. Both the π-π stacking of perylene end groups and the electrostatic repulsion effect of the polymer chains contribute to the pH-responsive self-assembly in aqueous solution.

Journal: :Chemical communications 2015
Wei Cao Yuwei Gu Tianyu Li Huaping Xu

A novel tellurium-containing polymer micelle system is reported to be responsive to 100 μM H2O2 and can undergo a series of morphological changes. The polymer micelles also respond to 2 Gy gamma radiation, which is the exact dosage a patient receives per day for clinical radiation therapy.

Journal: :Angewandte Chemie 2022

Understanding the complex behavior and dynamics of cellular membranes is integral to gain insight into division fusion processes. Bottom-up synthetic cells are as a platform for replicating probing behavior. Giant polymer vesicles more robust than liposomal counterparts, well having broad range chemical functionalities. However, stability membrane can prohibit dynamic processes such phase separ...

Journal: :Chemical communications 2006
Jianhua Zhou Geng Wang Jianqiang Hu Xianbo Lu Jinghong Li

A reversible electrochemical switching has been displayed at smart polymer brush interfaces, which was responsive to temperature, ionic strength and pH stimuli, independently or simultaneously.

Journal: :Chemical communications 2015
YanLi Shang Yuqi Zhang Pei Li Jing Lai Xiang-Yu Kong Weida Liu Kai Xiao Ganhua Xie Ye Tian Liping Wen Lei Jiang

A simple biomimetic ionic gate has been developed by modifying lead(II) ion responsive DNAzymes onto the inner surface of ion-etched polymer nanochannels.

2010
Vikas Mittal

Environmentally responsive poly(N-isopropylacrylamide) brushes were grafted from the surface of polymer particles or flat surfaces in order to generate reversible hydrophilic and hydrophobic surfaces. The use of atom transfer radical polymerization was demonstrated for the grafting of polymer brushes as it allows efficient control on the amount of grafted polymer. The polymer particles were gen...

2016
Menglian Wei Yongfeng Gao Xue Li Michael J. Serpe

Responsive polymer-based materials are capable of altering their chemical and/or physical properties upon exposure to external stimuli. These materials have been intensively studied over the years for a diverse range of applications, e.g., for on-demand drug delivery, tissue generation/repair, biosensing, smart coatings, and artificial muscles. Here, we review recent advances in the areas of se...

Journal: :Nanoscale 2016
Qian Yu Linnea K Ista Renpeng Gu Stefan Zauscher Gabriel P López

Surfaces with end-grafted, nanopatterned polymer brushes that exhibit well-defined feature dimensions and controlled chemical and physical properties provide versatile platforms not only for investigation of nanoscale phenomena at biointerfaces, but also for the development of advanced devices relevant to biotechnology and electronics applications. In this review, we first give a brief introduc...

Journal: :Journal of controlled release : official journal of the Controlled Release Society 2001
John Weidner

We report a new thermal targeting method in which a thermally responsive drug carrier selectively accumulates in a solid tumor that is maintained above physiological temperature by externally applied, focused hyperthermia. We synthesized two thermally responsive polymers that were designed to exhibit a lower critical solution temperature (LCST) transition slightly above physiological temperatur...

2015
Liang Ma Ryan Baumgartner Yanfeng Zhang Ziyuan Song Kaimin Cai Jianjun Cheng

A UV-responsive polymer was prepared via condensation polymerization of 2-nitrobenzyl(4-(1,2-dihydroxyethyl)phenyl)carbamate and azalaic acid dichloride. When the polymer was irradiated with UV light, the nitrobenzyl urethane protecting group was removed and the deprotected aniline underwent spontaneous 1,6-elimination reactions, resulting in degradation of the polymer. Nanoparticles with encap...

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