Article
Polymer Science
Linna Yu, Lingping Kong, Junpeng Xie, Wei Wang, Chen Chang, Hongli Che, Mingzhe Liu
Summary: The novel reduction-sensitive nanohydrogel prepared with NBACA showed high drug-loading capacity and exhibited good drug-release behavior, demonstrating high cytotoxicity against MCF-7 breast cancer cells.
DESIGNED MONOMERS AND POLYMERS
(2021)
Article
Biochemistry & Molecular Biology
Katrin Kappauf, Nikola Majstorovic, Seema Agarwal, Dorte Rother, Christiane Claassen
Summary: Smart hydrogels, specifically poly N-acryloyl glycinamide (pNAGA) hydrogels, have been explored as a potential matrix for immobilizing enzymes, with promising results in terms of immobilization efficiency and enzyme activity. The temperature-sensitive nature of pNAGA remains intact when used to immobilize the amine transaminase, resulting in a gradual deswelling effect as temperature decreases. Although enzyme activity is primarily temperature-controlled, immobilized BmTA shows higher deactivation rates compared to free BmTA, indicating a potential deactivating effect caused by the deswelling of the pNAGA gel.
Article
Chemistry, Applied
Tianyu Guo, Wangxia Wang, Junlong Song, Yongcan Jin, Huining Xiao
Summary: A novel cellulose-based hydrogel was constructed in this study for efficient delivery of agrochemicals. The hydrogel displayed reversible sol-gel transitions and dynamic reactions under various environmental conditions, showing potential for sustainable advancement of crop production.
CARBOHYDRATE POLYMERS
(2021)
Article
Polymer Science
Nicole Ziegenbalg, Juliane Eberhardt, Sebastian Staedter, Stephanie Hoeppener, Steffi Stumpf, Johannes C. Brendel
Summary: Aqueous emulsion or suspension polymerizations are widely used industrial processes, while dispersion polymerizations for stable particle dispersions are not common due to limited suitable monomers. In this study, Nacryloyl thiomorpholine (NAT) was found to be a promising candidate for aqueous dispersion polymerizations. By adding a surfactant and using low monomer concentrations, well-defined dispersions with monomodal size distributions can be obtained. The oxidation of NAT allows postpolymerization modifications, resulting in water-swollen microgels.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Ye-Ri Kim, Na-Ra Wi, Soo-Young Park
Summary: The shape of reactive cholesteric liquid crystal (rCLC)/fluorocarbon oil (FCO) droplets prepared by microfluidic method depends on the balance of interfacial energies, and complex-shaped droplets can be prepared by controlling the concentration of surfactants. These complex-shaped droplets exhibit photonic patterns and have potential as anticounterfeiting materials.
Article
Polymer Science
Bingqing Zheng, Genqi Liu, Lingli Zhao, Gang Wang, Yue Wang
Summary: We have developed a novel molecularly imprinted two-dimensional photonic crystal hydrogels (LVFXMIPCH) sensor for the visual monitoring of levofloxacin (LVFX). By measuring the diameter of the Debye diffraction ring, the response performance of the sensor was explored. The LVFX-MIPCH sensor showed high sensitivity (as low as 10^(-12) M), excellent specific recognition, and stable reusability.
Article
Chemistry, Physical
Zekun Zhang, Boru Wei, Dongpeng Yang, Dekun Ma, Shaoming Huang
Summary: In this work, a new photonic crystal hydrogel sensor has been developed for high-precision, selective, and visual detection of hydrofluoric acid (HF). The sensor utilizes a selective etching-induced swelling mechanism and is fabricated with silica/water/hydroxyethyl acrylate and non-closely packed structures. It demonstrates visually and spectrally sensing capabilities for HF (0-10 mM) by detecting the variation of reflection wavelength and structural colors. The sensor exhibits high sensing precision, outstanding selectivity, and a low detection limit of 0.1 mM, while also being tailorable, portable, easy-to-operate, and cost-effective (<0.01 $/sensor).
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Electrical & Electronic
Mahmoud Salman S. Ibrahim, M. Kotb G. Hamed, Mohammed M. El-Okr, S. S. A. Obayya, Mohamed Farhat O. Hameed
Summary: A highly sensitive 2D Si photonic crystal sensor is proposed for gamma-ray dose detection in the visible light region, achieving high sensitivity, linearity, and quality factor. The sensor design includes a cavity filled with a polymer doped with dyes and the analysis is conducted using finite-element and plane wave expansion methods. This is the first application of 2D-PhC technology for gamma-ray detection.
OPTICAL AND QUANTUM ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Bushra Rafique, Rizwan Ullah Khan, Aysha Sarfraz Rizvi, Muhammad Irfan, Ghulam Murtaza, Lili Qiu, Min Xue, Zihui Meng
Summary: A creatinine imprinted photonic crystal hydrogel (CIPC hydrogel) for naked-eye detection is developed to measure creatinine in the human serum. The CIPC hydrogel utilizes two-dimensional photonic crystal colloidal arrays embedded in the polyacrylamide hydrogel to bind and recognize creatinine in the serum samples, resulting in shrinkage of the hydrogel volume and a color shift. Molecular dockings are used to investigate the binding event and mechanism. The CIPC sensor demonstrates a low limit of detection, a linear detection range, and good recovery in the serum samples.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Article
Polymer Science
Ami Amano, Toshimitsu Kanai
Summary: We demonstrate the ability to control both the optical stopband wavelength and effective bandwidth of gel-immobilized loosely packed colloidal photonic crystals. By photopolymerizing the gelation reagent of charge-stabilized colloidal crystals under different upper- and bottom-light intensities, we obtain a gel-immobilized film with broadened Bragg reflection peak. Furthermore, by varying the swelling solvent concentration, we can vary the Bragg wavelength over a wide range while maintaining the same broadened effective bandwidth.
Article
Chemistry, Multidisciplinary
Mingzhu Li, Lei Yuan, Yifan Liu, Florian Vogelbacher, Xiaoyu Hou, Yanlin Song, Qunfeng Cheng
Summary: Inspired by the color changing mechanism of the butterfly Apatura ilia's wings, researchers have developed a highly efficient photothermally responsive artificial muscle and achieved a dynamic structural color imaging system. The artificial muscle exhibits stable and quick photothermal response and can provide real-time visual feedback. This research has significant implications for applications in sensors, displays, camouflage coatings, and other fields.
CELL REPORTS PHYSICAL SCIENCE
(2022)
Article
Materials Science, Characterization & Testing
Mohammad Bagher Sobhanimatin, Saeed Pourmahdian, Mohamad Mehdi Tehranchi
Summary: The study introduced a new fast colorimetric humidity sensor using the opal hydrogel composite (OHC), which is transparent in a dry state and changes color rapidly in response to increasing humidity. The sensor showed high sensitivity, repeatability, and good adhesion to the glass substrate, making it suitable for various applications.
Article
Biochemistry & Molecular Biology
Le Hang Dang, Phuong Doan, Tran Thi Yen Nhi, Dinh Trung Nguyen, Bich Tram Nguyen, Thi Phuong Nguyen, Ngoc Quyen Tran
Summary: This paper presents a new thermal sensitive hydrogel system based on cystamine-functionalised sodium alginate-g- pluronic F127 (ACP) which shows good biocompatibility and cell viability for long-term cell cultivation.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Polymer Science
Shengjie Xing, Guannan Zhang, Aobo Zhang, Zuobang Chang, Ziyu Guo, Anjie Dong, Jianhua Zhang
Summary: A new type of eutectogel was synthesized using low-cost and biocompatible deep eutectic solvents. The eutectogel exhibited adjustable mechanical properties, high electrical conductivity, and self-healing ability, making it suitable for constructing pressure sensors.
JOURNAL OF POLYMER SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Rongzhen Li, Lian Li, Bin Wang, Liping Yu
Summary: In this study, a photonic crystal structure was utilized to enhance the luminescence performance of fluorescent hydrogel, allowing it to be used as a fluorescence sensor for detecting nitrite in water with good selectivity. The hydrogel was endowed with fluorescence properties by PEI-CdS QDs, while the photonic crystal structure significantly enhanced the fluorescence emission capability, with a detection limit lower than the maximum limit for nitrite in drinking water.
Article
Chemistry, Multidisciplinary
Hiroyuki D. Koide, Keiichi Yoshimatsu, Yu Hoshino, Saki Ariizumi, Anna Okishima, Takafumi Ide, Hiromichi Egami, Yoshitaka Hamashima, Yuri Nishimura, Hiroaki Kanazawa, Yoshiko Miura, Tomohiro Asai, Naoto Oku, Kenneth J. Shea
JOURNAL OF CONTROLLED RELEASE
(2019)
Article
Biochemistry & Molecular Biology
Krista R. Fruehauf, Tae Il Kim, Edward L. Nelson, Joseph P. Patterson, Szu-Wen Wang, Kenneth J. Shea
Article
Nanoscience & Nanotechnology
Dan Yan, Lili Qiu, Kenneth J. Shea, Zihui Meng, Min Xue
ACS APPLIED MATERIALS & INTERFACES
(2019)
Article
Chemistry, Multidisciplinary
Masahiko Nakamoto, Di Zhao, Olivia Rose Benice, Shih-Hui Lee, Kenneth J. Shea
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2020)
Article
Biochemistry & Molecular Biology
Shunsuke Onogi, Shih-Hui Lee, Krista R. Fruehauf, Kenneth J. Shea
Summary: This approach utilizes synthetic hydrogel copolymers to selectively capture proteins by tuning their composition and polymerization conditions. The protein affinity reagent (PAR) can be rapidly synthesized in a chemistry laboratory without the need for living cells, and can reversibly capture and release proteins without denaturation under specific conditions.
Article
Chemistry, Multidisciplinary
Masahiko Nakamoto, Teresa Escalante, Jose M. Gutierrez, Kenneth J. Shea
Summary: A biomimetic of endogenous tissue inhibitors of metalloproteinases was engineered with three binding elements, showing inhibition of snake venom metalloproteinase. The size of the polymer contributed to inhibition efficacy, while a low crosslinked polymer hydrogel nanoparticle had comparable efficacy, suggesting potential for in vivo applications. The abiotic TIMP was effective against two classes of SVMPs in whole snake venom, serving as a design principle for biomimetic polymer inhibitors of enzymes.
Article
Materials Science, Biomaterials
Tong Zhang, Kamaran Khurshid Dar, Yuan Li, Jing Guo, Weiliang Sun, Kenneth J. Shea, Tianwei Tan, Yongqin Lv
Summary: An inhibitor for MMP-9 has been designed based on molecularly imprinted nanoparticles, showing selective inhibition of MMP-9 activity. This new approach effectively suppresses tumor migration and growth, offering a promising paradigm for cancer therapy engineering.
ACS BIOMATERIALS SCIENCE & ENGINEERING
(2021)
Article
Electrochemistry
Taylor L. Frey, Krista R. Fruehauf, Rachel A. Lucas, Jake W. Polster, Kenneth J. Shea, Zuzanna S. Siwy
Summary: This study investigates the application of solid state nanopores based on PIMs in ion transport and interactions. By controlling the pore structure and selecting functional groups, nanopore channels with consistent sizes can be achieved, and the interactions between ions and molecules inside the pores can be modified, opening up new avenues for water purification and energy storage.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Nanoscience & Nanotechnology
Qiaolian Cheng, Xiaoyang Yu, Zhouxuan Xiong, Zihao Wan, Yuxin Li, Weihua Ma, Wenfeng Tan, Mingming Liu, Kenneth J. Shea
Summary: This study presents a synthetic antibody (SA) that can bind to Bt Cry proteins. The SA, APhe-NP23, shows affinity and selectivity for Bt Cry1Ab/Ac proteins and inhibits their binding to insect receptors. These findings contribute to the concept that randomness and biospecificity are not mutually exclusive.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Wenxin Zhang, Lili Qiu, Kenneth J. Shea, Jing Fan, Yangyang Liu, Wenxiang Zheng, Min Xue, Wenfang Liu, Zhibin Xu, Xiu-tian-feng E, Xiao Dong, Yu Qiao, Zihui Meng
Summary: This study analyzes the structural color of photonic crystals using the HSB color space and demonstrates that the analysis based on hue value (H) can achieve accuracy comparable to spectrum analysis. Quantitative analysis of stimulus-responsive PhCs structural color is also possible using this method. This analysis method provides a convenient technology for general users.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Xiaoxiao Li, Xueting Li, Tingting Xia, Wei Chen, Kenneth J. Shea, Xihua Lu
Summary: It is discovered that introducing hydrophobic N-tert-butylacrylamide (TBA) with large sterically hindering side groups can slow down the dehydration of hydrophobic alkyl groups in PNIPAm-based nanogels, resulting in thermally induced sol-gel transition above the phase transition temperature (T-p). Furthermore, the introduction of N-acrylamido-L-phenylalanine (APhe) monomer with a strongly water-absorbing carboxyl group and larger steric hindrance can self-assemble PNIPAm/TBA/APhe terpolymer nanogels into colorful colloidal crystals that undergo sol-gel transition above T-p.
MATERIALS HORIZONS
(2023)
Article
Nanoscience & Nanotechnology
Shih-Hui Lee, Issa Moody, Zhiyang Zeng, Everly B. Fleischer, Gregory A. Weiss, Kenneth J. Shea
Summary: By utilizing phage display, high affinity peptide-polymer nanoparticle pairs can be selected. The affinity is derived from complementary physiochemical properties and specific peptide sequences, with peptide structure also contributing to the affinity. These findings present a general method for identifying polymer-peptide complementary pairs.
ACS APPLIED BIO MATERIALS
(2021)
Article
Polymer Science
Jose E. Baez, Kenneth J. Shea, Philip R. Dennison, Armando Obregon-Herrera, Jose Bonilla-Cruz
Meeting Abstract
Chemistry, Multidisciplinary
Krista Fruehauf, Tae-Il Kim, Quang Pham, Szu Wang, Kenneth Shea
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2018)
Meeting Abstract
Chemistry, Multidisciplinary
Kenneth Shea
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2018)
Article
Polymer Science
Yuanzhang Jiang, Xuyi Wang, Yanting Han, Dakai Gong, Yingchun Gu, Lin Tan
Summary: In this study, FeCl3 and poly(acrylic acid) (PAA) were doped into waterborne polyurethanes (WPUs) to create multifunctional materials with self-healing and antimicrobial properties. WPU/Fe/PAA-5.5, containing 5.5 wt % PAA, exhibited excellent mechanical properties, strong self-healing capabilities, and an impressive antimicrobial rate of over 90%. These supramolecular films were also highly recyclable through hot-pressing.
Article
Polymer Science
Longyu Tian, Min Wang, Guangming Liao, Baoliang Liu, Sujuan Zhang, Yucheng Sun, Zhen Meng, Jintao Zhang, Zaijun Lu
Summary: Two kinds of benzoxazine monomers were synthesized and used to prepare polybenzoxazine anion exchange membranes (AEMs) with quaternary ammonium functionalization. The LQPBZ AEM exhibited better ion conductivity and alkaline stability.
Article
Polymer Science
Claire A. Lemarchand
Summary: This study investigates the shock behavior of three different polymers through molecular dynamics simulations. The results reveal specificities in the shock behavior of polymers, including deviations from the linear relation between shock velocity and particle velocity, as well as differences in shear stress relaxation behind the shock front. It is found that the deviation of the Hugoniot locus is related to the change in the relative contribution of bonding and non-bonding potential energies, while polymers with higher glass transition temperatures exhibit slower shear stress relaxation.
Article
Polymer Science
Zengquan Liu, Xiaochun Yin, He Zhang, Shuo Gao, Qinglin Kuang, Yanhong Feng
Summary: A powder solid-state extension (PSSE) technology was proposed to address the high melt viscosity issue of UHMWPE. By uniaxial extension and sintering in the solid state, a highly self-reinforced material was prepared. X-ray diffraction and scattering techniques were used to study the structural evolution during the PSSE process, and a solid-phase induced transformation model was established.
Article
Polymer Science
Zhike Li, Anyu Luo, Rui Zhou, Xin Li, Haiyan Li
Summary: A novel high temperature resistance IL@SiO2 nanocapsules were successfully prepared and their friction and wear properties in PA6 composites were studied. The addition of IL@SiO2 nanocapsules reduced the friction coefficient and wear rate without affecting the mechanical properties of PA6. The synergy between the IL core and SiO2 wall in the nanocapsules improved the self-lubricating performance of the PA6 composites.
Article
Polymer Science
Xin Liu, Xuhong Guo, Qi Liao
Summary: In this study, an algorithm for accurately estimating viscosity is developed using molecular dynamics simulations and the Green-Kubo formula. This algorithm can be applied to complex systems with long correlations, such as macromolecular and biological simulation systems.
Article
Polymer Science
Hao Pu, Yun-Lei Hou, Jing -Zhou Chen, Dong -Lin Zhao
Summary: The use of modified graphene improves the interfacial adherence of carbon fibers to epoxy resin, resulting in enhanced interfacial and bending properties of CF and matrix in CF/EP composites, as well as increased interlaminar shear strength and flexural strength.
Article
Polymer Science
Wei-Chung Ke, Jin-Wei Lin, Manohar Reddy Busireddy, Yueh-Hsing Lee, Jiun-Tai Chen, Chain-Shu Hsu
Summary: This study introduces a crosslinkable monomer, TAIC, to synthesize three crosslinked polyimide films, which exhibit improved thermal, mechanical, and dielectric properties. The introduction of TAIC enhances the tensile strength, reduces the dielectric constant and dielectric loss, and decreases the coefficient of thermal expansion of the polyimide films.
Article
Polymer Science
Alex Kwasi Kumi, Ruiling Fan, Ye Chen, Yumei Zhang
Summary: The difference in leaching of amylopectin from cellulose/amylopectin/1-butyl-3-methylimidazolium chloride ([Bmim][Cl]) blends during regeneration in water and aqueous ethanol has been studied. Molecular dynamics simulations showed that the dissolution and regeneration mechanisms of amylopectin in [Bmim][Cl] are similar to cellulose in ionic liquids. Water regeneration leads to weak electrostatic interactions, resulting in high leaching of amylopectin. In contrast, ethanol-water interactions enhance electrostatic interactions among amylopectin chains, limiting amylopectin leaching in aqueous ethanol.
Article
Polymer Science
Xi Zeng, Junwei Zhou, Junbiao Peng, Chunsheng Zhang, Danling Wang, Yihu Song, Qiang Zheng
Summary: This study utilizes an oligomer deep eutectic solvent (DES) based on polyethylene glycol to regulate the vulcanization kinetics of rubber. The results show that the DES can accelerate vulcanization at low temperatures without affecting the crosslinking density and Mullins effect.
Article
Polymer Science
Qianqian Yue, Yongfei Peng, Xingjian Liu, Aihua He, Huarong Nie
Summary: The addition of metal deactivators can effectively suppress the aging of TBIR, prolong its lifespan, and have no negative effects on its physical and processing properties. These research findings are of great importance for improving the stability and aging resistance of polymers.
Article
Polymer Science
J. Gomez-Caturla, J. Ivorra-Martinez, R. Tejada-Oliveros, V Moreno, D. Garcia-Garcia, R. Balart
Summary: This work focuses on the development of environmentally friendly PLA formulations by using different esters derived from geraniol as plasticizers. The results show that these esters have good compatibility with PLA, and they can effectively enhance the elongation and plasticity of PLA, reduce its glass transition temperature, and slightly improve its water absorption capabilities.
Article
Polymer Science
Dandan Li, Zhaohui Lu, Zhao Ke, Ke Xu, Fengna Dai, Youhai Yu, Guangtao Qian, Chunhai Chen
Summary: In this study, cross-linked PI aerogel membranes with low dielectric constant and high moisture resistance were prepared by co-polymerization and scraping coating technology. The incorporation of fluorinated blocks and benzimidazole ring structures resulted in novel PI aerogel membranes with fascinating dielectric properties and outstanding moisture resistance.
Article
Polymer Science
Zhaoyang Chu, Qing Zhang, Haihua Luo, Han Zhou, Fapei Zhang, Wei Chen, Wenhua Zhang
Summary: Multi-physical fields solution processing strategy is a universal and facile method for preparing various conjugated polymer films and high-performance devices. In this study, we employed a combined microfluidic flow and ultrasonication strategy (FU) for processing CP solutions, and found a pronounced synergetic effect in promoting the pre-ordering of chains in solution. The conformation order and anisotropy of the solution were revealed through various characterizations. A non-classical nucleation model for polymer crystallization in non-equilibrium solution processing was confirmed. The roles of microfluidic flow and ultrasonication in chain aggregation and crystallization were addressed through multi-physical simulations. Compared to pristine solutions, the FU strategy showed improved solution anisotropy and crystallization kinetics, resulting in higher crystallinity in films and increased mobilities in OFET devices. The FU processing strategy provides a universal approach for regulating chain conformation and aggregation in conjugated polymer solutions.
