Article
Polymer Science
Sean T. McDermott, Shawn P. Ward, Ngoc Chau H Vy, Zilu Wang, Mayra Daniela Morales-Acosta, Andrey Dobrynin, Douglas H. Adamson
Summary: Passing-through polymerization is a method for synthesizing thicker and more densely packed polymer brushes by diffusing monomers through a functionalized surface. The study used computer simulations and experiments to demonstrate the implementation of this method and observed some unique phenomena.
Article
Polymer Science
Min Ki Cho, Hyun Ji Seo, Ji Hoon Lee, Woo Kyung Cho, Kyung-sun Son
Summary: Surface-initiated reversible addition-fragmentation chain transfer polymerization using oxygen (O-2-SI-RAFT) allows material-independent surface coating on various substrates in the presence of air. The excellent growth of polymer brushes, including the highest reported growth on Ti/TiO2 substrates, was characterized. Additionally, large surfaces can be coated with polymer brushes by O-2-SI-RAFT, demonstrating versatility and efficiency.
Article
Materials Science, Multidisciplinary
Jakob Pagh Nikolajsen, Lukas Vogtmann Thinnesen, Orhan Altug Karabiber, Kim Daasbjerg, Steen Uttrup Pedersen, Mikkel Kongsfelt, Mie Lillethorup
Summary: Surface coatings of immobilized polymer brushes, formed through a fast and versatile scaled SI-CRP approach, have various uses including as lubricants, anti-fouling coatings, and adhesives. The chemical process allows for easy preparation and reuse of the solution for over 6 hours, even in the presence of oxygen, without the need for an inert atmosphere. This method can be carried out under ambient conditions with no significant loss of polymerization activity and viability, making it industrially relevant and enabling uniform polymer brush-functionalized materials for a broader range of applications.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Polymer Science
Bingbing Yang, Siwen Liu, Jiashu Ma, Yang Yang, Jiahao Li, Bang-Ping Jiang, Shichen Ji, Xing-Can Shen
Summary: Computer simulations are commonly used to study surface-initiated polymerization (SIP), but they often assume a homogeneous reaction environment with chains growing at the same speed. However, SIP is actually a heterogeneous reaction. In this study, a stochastic reaction model is proposed to consider the inherent heterogeneity of the reaction environment by calculating the reaction probability of each active end individually. The results reveal that SIP in a heterogeneous reaction environment leads to larger dispersity and broader molecular weight distribution, which further affects properties such as density profile and brush height.
Article
Chemistry, Multidisciplinary
Friederike K. Metze, Irene Filipucci, Harm-Anton Klok
Summary: Polymer brushes can be produced by surface-initiated polymerization using initiators or chain transfer agents. This manuscript presents an alternative method using non-covalent host-guest interactions to immobilize initiators for atom transfer radical polymerization. These non-covalent initiators can generate supramolecular polymer brushes with film thicknesses over 100 nm.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Biophysics
Pranav P. Kalelkar, Zhishuai Geng, Bronson Cox, M. G. Finn, David M. Collard
Summary: In this study, the surface of PLA was modified by bromination using NBS under UV irradiation, allowing for the introduction of bromine and quaternary ammonium groups to enhance antimicrobial efficacy and hydrophilicity of PLA films.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Biochemical Research Methods
Chao Huang, Chunjing Tang, Ruizhi Tang, Zheng Gao, Shujuan Ma, Boli Gong, Junjie Ou
Summary: A hydrophilic adsorbent was prepared for the enrichment of N-glycopeptides. The adsorbent was synthesized through surface-initiated atom transfer radical polymerization (SI-ATRP) and photo-initiated thiol-ene reaction. It showed great potential in capturing N-glycopeptides from IgG digest and human serum digest with high sensitivity.
JOURNAL OF CHROMATOGRAPHY A
(2023)
Article
Chemistry, Applied
Biwen Wang, Peng Wang, Baoluo He, Shuanhong Ma, Shujuan Liu, Qian Ye, Feng Zhou
Summary: A double-network hydrogel was prepared by embedding an initiator (HHy-Br) and reinforcing with Fe3+, followed by grafting the antifouling polymer (PSBVI) onto the HHy-Br substrate via subsurface-initiated atom transfer radical polymerization (sSIATRP) to obtain HHy-PSBVI. Fe3+ increased the crosslinking density of HHy-Br, resulting in improved tensile strength and anti-swelling properties of the hydrogel. The presence of Fe3+ also promoted the sSIATRP process. HHy-PSBVI exhibited decreased friction coefficient and excellent antibacterial and antifouling properties due to the hydration of the zwitterionic polymer and the bactericidal effect of the cationic imidazole group.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Polymer Science
Shuaijie Chen, Peng Wang, Haitao Zhao, Weiwei He, Lifen Zhang, Zhenping Cheng
Summary: This study developed a facile and efficient method for preparing grafted polyesters by combining photocontrolled BIT-RDRP and ROP in flow reactors at room temperature for the first time. Polymethacrylate macroinitiators were synthesized in the first tube and employed for TBD-catalyzed ROP in the second tube to provide tailored grafted polyesters. The use of flow tube reactors significantly improved the polymerization rates and allowed for the production of grafted polyesters with controlled molar mass and narrow dispersity.
Article
Polymer Science
Ryo Satoh, Saika Honma, Hiroyuki Arafune, Ryo Shomura, Toshio Kamijo, Takashi Morinaga, Takaya Sato
Summary: This study developed a novel method of in situ surface-initiated atom-transfer radical polymerization using nonvolatile ionic liquid components to form concentrated polymer brushes on a silicon wafer, which was confirmed by gel permeation chromatography. The effectiveness of in situ preparation for CPBs using the coating technique was established for the first time in this paper.
Article
Polymer Science
Baoluo He, Qi Lu, Xiangyuan Zhao, Xiaozhi Zhang, Rong Mu, Wenbo Sheng, Bin Li, Shujuan Liu, Qian Ye, Feng Zhou
Summary: This study reports a facile method of gallium-based liquid metal (GLM) nanodroplets mediated surface-initiated atom transfer radical polymerization (SI-ATRP) for preparing polymer brushes on GLM surfaces. The feasibility of GLM surface modified SI-ATRP is confirmed by UV-vis spectra, which also indicates that the thickness and density of polymer brushes are crucial for successful ATRP on GLM nanodroplets surfaces. Polymer brushes modified GLM nanodroplets show potential applications such as friction reduction and oil-water emulsion separation.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Biochemistry & Molecular Biology
Miroslav Mrlik, Jozef Kollar, Katarina Borska, Marketa Ilcikova, Danila Gorgol, Josef Osicka, Michal Sedlacik, Alena Ronzova, Peter Kasak, Jaroslav Mosnacek
Summary: In this study, the conducting polymer PPEMA was synthesized using conventional atom transfer radical polymerization, and a conducting shell was successfully grown on the magnetic core using surface-bonded method. The molar mass and dispersity of the polymers can be controlled, providing a system with a tailorable structure and brush-like morphology. Short polymer chains grafted to the CI particles exhibited a plasticizing effect and enhanced electromagnetic shielding. The SE materials containing the CI-PPEMA hybrid particles showed improved damping factor and mechanical performance.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Nanoscience & Nanotechnology
Yunsoo Choi, Chul Soon Park, Hung-Vu Tran, Chien-Hung Li, Cathleen M. Crudden, Randall Lee
Summary: This study reports the development and use of bench-stable NHC adsorbates for the direct formation of NHC films on gold surfaces under ambient conditions. The generated NHC SAMs were fully characterized and compared to analogous SAMs generated from a different adsorbate. Furthermore, the potential utility of these NHC films as surface-initiated polymerization platforms was demonstrated.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Polymer Science
Ryo Takabayashi, Stephan Feser, Hiroshi Yonehara, Ilhyong Ryu, Takahide Fukuyama
Summary: The nitroxide-mediated radical polymerization (NMP) of styrene and butyl acrylate using BlocBuilder MA under continuous flow reaction conditions showed higher conversions and smaller polydispersity index (D) values compared with batch reaction conditions. The addition of a small amount of acetol or malononitrile accelerated the NMP reaction without sacrificing D values. Flow reactors enable the highly controlled synthesis of styrene and butyl acrylate NMP reactions initiated by BlocBuilder MA (BB MA) with additives, and BA-St di-block copolymers were also synthesized.
Article
Chemistry, Multidisciplinary
Yu Wang, Sushant P. Sahu, Alec J. Clay, Amanda J. Gildersleeve
Summary: By combining nitroxide radicals and ATRP active halogens into a functional reagent, simultaneous ATRP-NRC relay polymerization was successfully achieved, allowing for tailored macromolecular architecture and functionality by using different functional reagents.
CHEMICAL COMMUNICATIONS
(2021)
Article
Materials Science, Biomaterials
Izabela Stupka, Artur P. Biela, Bernard Piette, Agnieszka Kowalczyk, Karolina Majsterkiewicz, Kinga Borzecka-Solarz, Antonina Naskalska, Jonathan G. Heddle
Summary: Artificial protein cages, such as TRAP-cages, have potential applications in vaccines and drug delivery. TRAP-cages have the ability to control the disassembly conditions by modifying the interface between their building blocks. By using TRAP rings with different numbers of monomers, it is possible to predict the formation of other cages.
JOURNAL OF MATERIALS CHEMISTRY B
(2024)
Article
Materials Science, Biomaterials
Guo Zhang, Yu Wang, Hua Qiu, Lei Lu
Summary: This study presents a one-pot synthesis method for flower-like AMPs@EAMP particles by combining antimicrobial peptides with ellagic acid, offering enlarged surface area, excellent biocompatibility, and broad-spectrum antibacterial activity. In vivo studies indicate their potential for tissue repair and immune barrier reconstruction.
JOURNAL OF MATERIALS CHEMISTRY B
(2024)
Article
Materials Science, Biomaterials
Jiamei Zhang, Lingshuang Wang, Cheng Xu, Yingui Cao, Shengsheng Liu, Rui L. Reis, Subhas C. Kundu, Xiao Yang, Bo Xiao, Lian Duan
Summary: Pluronic F127 modified silk fibroin film with different types of antibacterial agents could accelerate wound recovery by promoting fibroblast adhesion, eradicating bacteria, and facilitating angiogenesis and re-epithelialization.
JOURNAL OF MATERIALS CHEMISTRY B
(2024)
Article
Materials Science, Biomaterials
Yinsheng Liu, Mingyue Wang, Yinfei Hui, Lei Sun, Yanrui Hao, Henlong Ren, Hao Guo, Wu Yang
Summary: In this study, a rare-earth hybrid luminescent material was developed for the detection of a biomarker for anthrax. The material showed excellent selectivity and high sensitivity, allowing for the determination of the biomarker in saliva and urine. Additionally, a convenient point-of-care testing method using fluorescent test paper and a smartphone was established for the initial diagnosis of anthrax.
JOURNAL OF MATERIALS CHEMISTRY B
(2024)
Review
Materials Science, Biomaterials
Wenshuai Yang, Jingsi Chen, Ziqian Zhao, Meng Wu, Lu Gong, Yimei Sun, Charley Huang, Bin Yan, Hongbo Zeng
Summary: Injectable hydrogels with shear-thinning and/or in situ formation properties offer distinct advantages in bioengineering applications, as they can be directly delivered to target sites, possess self-healing abilities, and simplify the implantation process.
JOURNAL OF MATERIALS CHEMISTRY B
(2024)