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Zuo S, Feng W, Liu F, Xu X, Tao X, Wang L, Liu H, Lin S. Polymerization-induced self-assembly of side-chain liquid crystalline copolymers by dissipative particle dynamics simulation. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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2
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Yuan Z, Ding J, Zhang Y, Huang B, Song Z, Meng X, Ma X, Gong X, Huang Z, Ma S, Xiang S, Xu W. Components, mechanisms and applications of stimuli-responsive polymer gels. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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3
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Liang Q, Xia X, Sun X, Yu D, Huang X, Han G, Mugo SM, Chen W, Zhang Q. Highly Stretchable Hydrogels as Wearable and Implantable Sensors for Recording Physiological and Brain Neural Signals. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2201059. [PMID: 35362243 PMCID: PMC9165511 DOI: 10.1002/advs.202201059] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Indexed: 06/01/2023]
Abstract
Recording electrophysiological information such as brain neural signals is of great importance in health monitoring and disease diagnosis. However, foreign body response and performance loss over time are major challenges stemming from the chemomechanical mismatch between sensors and tissues. Herein, microgels are utilized as large crosslinking centers in hydrogel networks to modulate the tradeoff between modulus and fatigue resistance/stretchability for producing hydrogels that closely match chemomechanical properties of neural tissues. The hydrogels exhibit notably different characteristics compared to nanoparticles reinforced hydrogels. The hydrogels exhibit relatively low modulus, good stretchability, and outstanding fatigue resistance. It is demonstrated that the hydrogels are well suited for fashioning into wearable and implantable sensors that can obtain physiological pressure signals, record the local field potentials in rat brains, and transmit signals through the injured peripheral nerves of rats. The hydrogels exhibit good chemomechanical match to tissues, negligible foreign body response, and minimal signal attenuation over an extended time, and as such is successfully demonstrated for use as long-term implantable sensory devices. This work facilitates a deeper understanding of biohybrid interfaces, while also advancing the technical design concepts for implantable neural probes that efficiently obtain physiological information.
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Affiliation(s)
- Quanduo Liang
- State Key Laboratory of Electroanalytical ChemistryChangchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022P. R. China
- School of Applied Chemistry and EngineeringUniversity of Science and Technology of ChinaHefei230026P. R. China
| | - Xiangjiao Xia
- State Key Laboratory of Electroanalytical ChemistryChangchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022P. R. China
- School of Applied Chemistry and EngineeringUniversity of Science and Technology of ChinaHefei230026P. R. China
| | - Xiguang Sun
- Bethune First Hospital of Jilin UniversityNo. 1, Xinmin StreetChangchun130061P. R. China
- Department of Oral GeriatricsHospital of StomatologyJilin UniversityChangchun130021P. R. China
| | - Dehai Yu
- Bethune First Hospital of Jilin UniversityNo. 1, Xinmin StreetChangchun130061P. R. China
- Department of Oral GeriatricsHospital of StomatologyJilin UniversityChangchun130021P. R. China
| | - Xinrui Huang
- Bethune First Hospital of Jilin UniversityNo. 1, Xinmin StreetChangchun130061P. R. China
- Department of Oral GeriatricsHospital of StomatologyJilin UniversityChangchun130021P. R. China
| | - Guanghong Han
- Department of Oral GeriatricsHospital of StomatologyJilin UniversityChangchun130021P. R. China
| | - Samuel M. Mugo
- Department of Physical SciencesMacEwan UniversityEdmontonABT5J4S2Canada
| | - Wei Chen
- State Key Laboratory of Electroanalytical ChemistryChangchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022P. R. China
- School of Applied Chemistry and EngineeringUniversity of Science and Technology of ChinaHefei230026P. R. China
| | - Qiang Zhang
- State Key Laboratory of Electroanalytical ChemistryChangchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022P. R. China
- School of Applied Chemistry and EngineeringUniversity of Science and Technology of ChinaHefei230026P. R. China
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4
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Wei M, Darcie T, Xu W, Gao Y, Mundel H, Aitchison JS, Zhang X, Serpe MJ. Enhancing the Sensitivity of Surface Plasmon Resonance Measurements Utilizing Polymer Film/Au Assemblies. Anal Chem 2021; 93:16718-16726. [PMID: 34851626 DOI: 10.1021/acs.analchem.1c04546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Surface plasmon resonance (SPR) is used to infer information about a sample that is in contact with an Au-coated glass slide coupled to the SPR prism. Shifts in the angle of the "SPR minimum reflection" can be related to changes in the refractive index (and/or thickness) of the sample that is in contact with the Au film, which can then be used to determine the concentration of an analyte in that sample. Here, we show that by depositing a layer of poly(N-isopropylacrylamide-co-acrylic acid) [p(NIPAm-co-AAc)] microgel on the SPR's Au film, with a subsequent layer of Au deposited on top of the microgels, the sensitivity of SPR to changes in solution properties can be enhanced. We investigated the sensitivity of the SPR to changes in the temperature of water in contact with the SPR's Au film as a function of the microgel immobilization density and the thickness of the Au layer deposited on the microgel layer. The data revealed that the SPR's Au film densely coated with microgels, with 5 nm of Au deposited, exhibited the maximal enhancement. The plasmon coupling effect between the additional Au film on the microgels and the SPR's Au film was further confirmed by 3D finite difference time domain simulations.
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Affiliation(s)
- Menglian Wei
- Key Laboratory of Optoelectronic Devices and Systems, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.,Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton T6G 2G2, Canada
| | - Todd Darcie
- Department of Electrical and Computer Engineering, University of Toronto, Toronto M5S3G4, Ontario, Canada
| | - Wenwen Xu
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton T6G 2G2, Canada
| | - Yongfeng Gao
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton T6G 2G2, Canada
| | - Hannah Mundel
- Department of Electrical and Computer Engineering, University of Toronto, Toronto M5S3G4, Ontario, Canada
| | - J Stewart Aitchison
- Department of Electrical and Computer Engineering, University of Toronto, Toronto M5S3G4, Ontario, Canada
| | - Xueji Zhang
- Key Laboratory of Optoelectronic Devices and Systems, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Michael J Serpe
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton T6G 2G2, Canada
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6
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Shu T, Hu L, Shen Q, Jiang L, Zhang Q, Serpe MJ. Stimuli-responsive polymer-based systems for diagnostic applications. J Mater Chem B 2021; 8:7042-7061. [PMID: 32743631 DOI: 10.1039/d0tb00570c] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Stimuli-responsive polymers exhibit properties that make them ideal candidates for biosensing and molecular diagnostics. Through rational design of polymer composition combined with new polymer functionalization and synthetic strategies, polymers with myriad responsivities, e.g., responses to temperature, pH, biomolecules, CO2, light, and electricity can be achieved. When these polymers are specifically designed to respond to biomarkers, stimuli-responsive devices/probes, capable of recognizing and transducing analyte signals, can be used to diagnose and treat disease. In this review, we highlight recent state-of-the-art examples of stimuli-responsive polymer-based systems for biosensing and bioimaging.
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Affiliation(s)
- Tong Shu
- School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen, Guangdong 518060, China
| | - Liang Hu
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, 199 Ren'ai Road, Suzhou 215123, China
| | - Qiming Shen
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada.
| | - Li Jiang
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, 199 Ren'ai Road, Suzhou 215123, China
| | - Qiang Zhang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China.
| | - Michael J Serpe
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada.
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7
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Wang J, Zhang X, Shi K, Zhang Q. Optical Devices Constructed From Responsive Microgels for Polyphenols Detection. Front Chem 2021; 9:580025. [PMID: 33777892 PMCID: PMC7991913 DOI: 10.3389/fchem.2021.580025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Accepted: 02/01/2021] [Indexed: 11/30/2022] Open
Abstract
Polyphenols are used as antioxidants in various foods and beverages, which are considered to be a health benefit. The measurement of polyphenols contents is of great interest in food chemistry and health science. This work reported a microgels based photonic device (etalon) to detect polyphenols. Dopamine was used as a model compound of polyphenols. Herein, we proposed a “block” concept for dopamine detection. The dopamine was oxidized and formed dopamine films catalyzed by tyrosinase on the surface of etalon. As the etalon was immersed in ZnCl2, the dopamine films blocked the ZnCl2 diffusion into etalon that caused optical property changes. The film thickness is associated with the concentration of dopamine which can be readout via optical signals.
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Affiliation(s)
- Jingying Wang
- Department of Laboratory, 15189 Accredited Laboratory, Jilin Province Drug Resistance Monitoring Center, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Xieli Zhang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China.,School of Applied Chemistry and Engineering University of Science and Technology of China, Hefei, China
| | - Kaiyao Shi
- Provincial Key Laboratory for Gene Diagnosis of Cardiovascular Disease, Jilin Provincial Engineering Laboratory for Endothelial Function and Genetic Diagnosis, Department of Cardiology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Qiang Zhang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China.,School of Applied Chemistry and Engineering University of Science and Technology of China, Hefei, China
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8
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Savage DT, Briot NJ, Hilt JZ, Dziubla TD. On the swelling behavior of poly( N-Isopropylacrylamide) hydrogels exposed to perfluoroalkyl acids. JOURNAL OF POLYMER SCIENCE 2021; 59:289-299. [PMID: 34859243 PMCID: PMC8631585 DOI: 10.1002/pol.20200805] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Accepted: 12/18/2020] [Indexed: 11/06/2022]
Abstract
Per- and polyfluoroalkyl substances (PFAS) have rapidly accumulated in the environment due to their widespread use prior to commercial discussion in the early 21st century, and their slow degradation has magnified concerns of their potential toxicity. Monitoring their distribution is, therefore, necessary to evaluate and control their impact on the health of exposed populations. This investigation evaluates the capability of a simple polymeric detection scheme for PFAS based on crosslinked, thermoresponsive poly(N-isopropylacrylamide) (PNIPAM) hydrogels. Surveying swelling perturbations induced by several hydrotropes and comparable hydrocarbon analogs, tetraethylammonium perfluorooctane sulfonate (TPFOS) showed a significantly higher swelling ratio on a mass basis (65.5 ± 8.8 at 15°C) than any of the other analytes tested. Combining swelling with the fluorimetric response of a solvachromatic dye, nile red, revealed the fluorosurfactant to initiate observable aggregation (i.e., its critical aggregation concentration) at 0.05 mM and reach saturation (i.e., its charge neutralization concentration) at 0.5 mM. The fluorosurfactant was found to homogeneously distribute throughout the polymer matrix with energy dispersive X-ray spectroscopy, marking the swelling response as a peculiar nexus of fluorinated interfacial positioning and delocalized electrostatic repulsion. Results from the current study hold promise for exploiting the physiochemical response of PNIPAM to assess TPFOS's concentration.
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Affiliation(s)
- Dustin T. Savage
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky
| | - Nicolas J. Briot
- Electron Microscopy Center, University of Kentucky, Lexington, Kentucky
| | - J. Zach Hilt
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky
| | - Thomas D. Dziubla
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky
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9
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Wrede O, Bergmann S, Hannappel Y, Hellweg T, Huser T. Smart microgels investigated by super-resolution fluorescence microscopy: influence of the monomer structure on the particle morphology. SOFT MATTER 2020; 16:8078-8084. [PMID: 32789349 DOI: 10.1039/d0sm00597e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In a recent publication [Bergmann et al. Phys. Chem. Chem. Phys., 2018, 20, 5074-5083] we presented a method which enables to investigate the morphology of microgels by superresolution fluorescence microscopy. Here, this method is applied to three microgel species, based on N-isopropylmethacrylamide (NIPMAM), N-n-propylacrylamide (NNPAM) and N-n-propylmethacrylamide (NNPMAM)) with 5, 7.5 and 10 mol% cross-linker, respectively. Super-resolution microscopy reveals differences of the network morphology of the synthesized particles showing the importance of the monomer structure.
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Affiliation(s)
- Oliver Wrede
- Biomolecular Photonics, Department of Physics, Bielefeld University, Universitätsstraße 25, 33615 Bielefeld, Germany.
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10
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Paciolla M, Arismendi-Arrieta DJ, Moreno AJ. Coarsening Kinetics of Complex Macromolecular Architectures in Bad Solvent. Polymers (Basel) 2020; 12:E531. [PMID: 32121665 PMCID: PMC7182883 DOI: 10.3390/polym12030531] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Revised: 02/04/2020] [Accepted: 02/20/2020] [Indexed: 11/16/2022] Open
Abstract
This study reports a general scenario for the out-of-equilibrium features of collapsing polymeric architectures. We use molecular dynamics simulations to characterize the coarsening kinetics, in bad solvent, for several macromolecular systems with an increasing degree of structural complexity. In particular, we focus on: flexible and semiflexible polymer chains, star polymers with 3 and 12 arms, and microgels with both ordered and disordered networks. Starting from a powerful analogy with critical phenomena, we construct a density field representation that removes fast fluctuations and provides a consistent characterization of the domain growth. Our results indicate that the coarsening kinetics presents a scaling behaviour that is independent of the solvent quality parameter, in analogy to the time-temperature superposition principle. Interestingly, the domain growth in time follows a power-law behaviour that is approximately independent of the architecture for all the flexible systems; while it is steeper for the semiflexible chains. Nevertheless, the fractal nature of the dense regions emerging during the collapse exhibits the same scaling behaviour for all the macromolecules. This suggests that the faster growing length scale in the semiflexible chains originates just from a faster mass diffusion along the chain contour, induced by the local stiffness. The decay of the dynamic correlations displays scaling behavior with the growing length scale of the system, which is a characteristic signature in coarsening phenomena.
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Affiliation(s)
- Mariarita Paciolla
- Centro de Física de Materiales (CSIC, UPV/EHU) and Materials Physics Center MPC, Paseo Manuel de Lardizabal 5, 20018 San Sebastián, Spain;
| | | | - Angel J. Moreno
- Centro de Física de Materiales (CSIC, UPV/EHU) and Materials Physics Center MPC, Paseo Manuel de Lardizabal 5, 20018 San Sebastián, Spain;
- Donostia International Physics Center, Paseo Manuel de Lardizabal 4, 20018 San Sebastián, Spain;
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11
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Li Z, Liu P, Ji X, Gong J, Hu Y, Wu W, Wang X, Peng HQ, Kwok RTK, Lam JWY, Lu J, Tang BZ. Bioinspired Simultaneous Changes in Fluorescence Color, Brightness, and Shape of Hydrogels Enabled by AIEgens. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1906493. [PMID: 32022969 DOI: 10.1002/adma.201906493] [Citation(s) in RCA: 84] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 12/27/2019] [Indexed: 05/28/2023]
Abstract
Development of stimuli-responsive materials with complex practical functions is significant for achieving bioinspired artificial intelligence. It is challenging to fabricate stimuli-responsive hydrogels showing simultaneous changes in fluorescence color, brightness, and shape in response to a single stimulus. Herein, a bilayer hydrogel strategy is designed by utilizing an aggregation-induced emission luminogen, tetra-(4-pyridylphenyl)ethylene (TPE-4Py), to fabricate hydrogels with the above capabilities. Bilayer hydrogel actuators with the ionomer of poly(acrylamide-r-sodium 4-styrenesulfonate) (PAS) as a matrix of both active and passive layers and TPE-4Py as the core function element in the active layer are prepared. At acidic pH, the protonation of TPE-4Py leads to fluorescence color and brightness changes of the actuators and the electrostatic interactions between the protonated TPE-4Py and benzenesulfonate groups of the PAS chains in the active layer cause the actuators to deform. The proposed TPE-4Py/PAS-based bilayer hydrogel actuators with such responsiveness to stimulus provide insights in the design of intelligent systems and are highly attractive material candidates in the fields of 3D/4D printing, soft robots, and smart wearable devices.
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Affiliation(s)
- Zhao Li
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen, 518057, China
| | - Pengchao Liu
- Department of Mechanical Engineering, City University of Hong Kong, Kowloon, Hong Kong, China
| | - Xiaofan Ji
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen, 518057, China
| | - Junyi Gong
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen, 518057, China
| | - Yubing Hu
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen, 518057, China
| | - Wenjie Wu
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen, 518057, China
| | - Xinnan Wang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen, 518057, China
| | - Hui-Qing Peng
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen, 518057, China
| | - Ryan T K Kwok
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen, 518057, China
| | - Jacky W Y Lam
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen, 518057, China
| | - Jian Lu
- Department of Mechanical Engineering, City University of Hong Kong, Kowloon, Hong Kong, China
- Center for Advanced Structural Materials, City University of Hong Kong, Shenzhen Research Institute, 8 Yuexing 1st Road, Shenzhen Hi-Tech Industrial Park, Nanshan District, Shenzhen, 518057, P. R. China
| | - Ben Zhong Tang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen, 518057, China
- Center for Aggregation-Induced Emission, SCUT-HKUST Joint Research Institutes, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, China
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Otto P, Bergmann S, Sandmeyer A, Dirksen M, Wrede O, Hellweg T, Huser T. Resolving the internal morphology of core-shell microgels with super-resolution fluorescence microscopy. NANOSCALE ADVANCES 2020; 2:323-331. [PMID: 36134006 PMCID: PMC9416983 DOI: 10.1039/c9na00670b] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 11/28/2019] [Indexed: 06/10/2023]
Abstract
We investigate the internal morphology of smart core-shell microgels by super-resolution fluorescence microscopy exploiting a combination of 3D single molecule localization and structured illumination microscopy utilizing freely diffusing fluorescent dyes. This approach does not require any direct chemical labeling and does not perturb the network structure of these colloidal gels. Hence, it allows us to study the morphology of the particles with very high precision. We found that the structure of the core-forming seed particles is drastically changed by the second synthesis step necessary for making the shell, resulting in a core region with highly increased dye localization density. The present work shows that super-resolution microscopy has great potential with respect to the study of soft colloidal systems.
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Affiliation(s)
- Pia Otto
- Physical and Biophysical Chemistry, Bielefeld University Germany
| | | | | | - Maxim Dirksen
- Physical and Biophysical Chemistry, Bielefeld University Germany
| | - Oliver Wrede
- Physical and Biophysical Chemistry, Bielefeld University Germany
| | - Thomas Hellweg
- Physical and Biophysical Chemistry, Bielefeld University Germany
| | - Thomas Huser
- Biomolecular Photonics, Bielefeld University Germany
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13
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Korde JM, Kandasubramanian B. Fundamentals and Effects of Biomimicking Stimuli-Responsive Polymers for Engineering Functions. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b00683] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Jay M. Korde
- Biocomposite Laboratory, Department of Metallurgical & Materials Engineering, DIAT (DU), Ministry of Defence, Girinagar, Pune-411025, India
| | - Balasubramanian Kandasubramanian
- Biocomposite Laboratory, Department of Metallurgical & Materials Engineering, DIAT (DU), Ministry of Defence, Girinagar, Pune-411025, India
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14
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Islam MR, Azimi S, Teimoory F, Loppnow G, Serpe MJ. Isolation of RNA from a mixture and its detection by utilizing a microgel-based optical device. CAN J CHEM 2018. [DOI: 10.1139/cjc-2018-0199] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
In this investigation, we show that RNA can be separated from a solution containing DNA and RNA and the isolated RNA can be detected using poly (N-isopropylacrylamide-co-N-(3-aminopropyl) methacrylamide hydrochloride) microgel-based optical devices (etalons). The isolation of RNA was accomplished by using hairpin-functionalized magnetic beads (MMPDNA) and differential melting, based on the fact that the DNA–RNA hybrid duplex is stronger (i.e., high melting temperature) than the DNA–DNA duplex (i.e., low melting temperature). By performing concurrent etalon sensing and fluorescent studies, we found that the MMPDNA combined with differential melting was capable of selectively separating RNA from DNA. This selective separation and simple colorimetric detection of RNA from a mixture will help lead to future RNA-based disease diagnostic devices.
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Affiliation(s)
- Molla R. Islam
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada
| | - Shakiba Azimi
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada
| | - Faranak Teimoory
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada
| | - Glen Loppnow
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada
| | - Michael J. Serpe
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada
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15
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Karanastasis AA, Zhang Y, Kenath GS, Lessard MD, Bewersdorf J, Ullal CK. 3D mapping of nanoscale crosslink heterogeneities in microgels. MATERIALS HORIZONS 2018; 5:1130-1136. [PMID: 30450211 PMCID: PMC6208052 DOI: 10.1039/c8mh00644j] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 08/07/2018] [Indexed: 05/30/2023]
Abstract
The majority of swollen polymer networks exhibit spatial variations in crosslink density. These spatial heterogeneities are particularly important in colloidal gel particles, or microgels, where they manifest themselves on the nanoscale and impact mechanical and transport properties. Despite their importance, the real space nanostructure of these heterogeneities at the individual particle level has remained elusive. Using state of the art super-resolution microscopy known as Whole cell 4Pi Single Molecule Switching Nanoscopy (W-4PiSMSN) we demonstrate 3D nanoscale mapping of spatial crosslink heterogeneities in a model system of poly(N-isopropylacrylamide) colloidal gel particles containing a novel fluorophore tagged crosslinker. We reveal the presence of higher crosslink density clusters embedded in a lower crosslink density matrix within the core of individual microgel particles, a phenomenon that has been predicted, but never been observed before in real space. The morphology of the clusters provides insight into the kinetics of microgel formation. This study also provides proof-of-concept 3D super-resolution imaging of spatial heterogeneities in bulk hydrogels.
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Affiliation(s)
- Apostolos A Karanastasis
- Department of Materials Science and Engineering , Rensselaer Polytechnic Institute , Troy , New York 12180 , USA .
| | - Yongdeng Zhang
- Department of Cell Biology , Yale University , New Haven , CT 06520 , USA
| | - Gopal S Kenath
- Department of Materials Science and Engineering , Rensselaer Polytechnic Institute , Troy , New York 12180 , USA .
| | - Mark D Lessard
- Department of Cell Biology , Yale University , New Haven , CT 06520 , USA
| | - Joerg Bewersdorf
- Department of Cell Biology , Yale University , New Haven , CT 06520 , USA
- Department of Biomedical Engineering , Yale University , New Haven , CT 06520 , USA
| | - Chaitanya K Ullal
- Department of Materials Science and Engineering , Rensselaer Polytechnic Institute , Troy , New York 12180 , USA .
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16
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Sun M, Bai R, Yang X, Song J, Qin M, Suo Z, He X. Hydrogel Interferometry for Ultrasensitive and Highly Selective Chemical Detection. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1804916. [PMID: 30252962 DOI: 10.1002/adma.201804916] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 08/26/2018] [Indexed: 06/08/2023]
Abstract
Developing ultrasensitive chemical sensors with small scale and fast response through simple design and low-cost fabrication is highly desired but still challenging. Herein, a simple and universal sensing platform based on a hydrogel interferometer with femtomol-level sensitivity in detecting (bio)chemical molecules is demonstrated. A unique local concentrating effect (up to 109 folds) in the hydrogel induced by the strong analyte binding and large amount of ligands, combined with the signal amplification effect by optical interference, endows this platform with an ultrahigh sensitivity, specifically 10-14 m for copper ions and 1.0 × 10-11 mg mL-1 for glycoprotein with 2-4 order-of-magnitude enhancement. The specific chemical reactions between selected ligands and target analytes provide high selectivity in detecting complex fluids. This universal principle with broad chemistry, simple physics, and modular design allows for high performance in detecting wide customer choices of analytes, including metal ions and proteins. The scale of the sensor can be down to micrometer size. The nature of the soft gel makes this platform transparent, flexible, stretchable, and compatible with a variety of substrates, showing high sensing stability and robustness after 200 cycles of bending or stretching. The outstanding sensing performance grants this platform great promise in broad practical applications.
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Affiliation(s)
- Mo Sun
- Department of Materials Science and Engineering, University of California, Los Angeles, CA, 90095, USA
| | - Ruobing Bai
- John A. Paulson School of Engineering and Applied Sciences, Kavli Institute for Bionano Science and Technology, Harvard University, Cambridge, MA, 02138, USA
| | - Xingyun Yang
- Department of Materials Science and Engineering, University of California, Los Angeles, CA, 90095, USA
| | - Jiaqi Song
- Department of Materials Science and Engineering, University of California, Los Angeles, CA, 90095, USA
| | - Meng Qin
- Department of Materials Science and Engineering, University of California, Los Angeles, CA, 90095, USA
| | - Zhigang Suo
- John A. Paulson School of Engineering and Applied Sciences, Kavli Institute for Bionano Science and Technology, Harvard University, Cambridge, MA, 02138, USA
| | - Ximin He
- Department of Materials Science and Engineering, University of California, Los Angeles, CA, 90095, USA
- California Nanosystems Institute, Los Angeles, CA, 90095, USA
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17
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Liu L, Ma G, Zeng M, Du W, Yuan J. Renewable boronic acid affiliated glycerol nano-adsorbents for recycling enzymatic catalyst in biodiesel fuel production. Chem Commun (Camb) 2018; 54:12475-12478. [PMID: 30338320 DOI: 10.1039/c8cc06169f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nano-adsorbents composed of poly(4-vinylphenyl boronic acid) shell and silica core efficiently remove residual glycerol from a lipase catalyst layer in biodiesel fuel production, resulting in excellent lipase recycling. The subsequent CO2-acidolysis endows the adsorbents with sustainable renewability.
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Affiliation(s)
- Lei Liu
- Department of Chemistry, Key Lab of Organic Optoelectronics & Molecular Engineering, Tsinghua University, Beijing 100084, China.
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18
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Matsui S, Inui K, Kumai Y, Yoshida R, Suzuki D. Autonomously Oscillating Hydrogel Microspheres with High-Frequency Swelling/Deswelling and Dispersing/Flocculating Oscillations. ACS Biomater Sci Eng 2018; 5:5615-5622. [DOI: 10.1021/acsbiomaterials.8b00850] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Shusuke Matsui
- Graduate School of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan
| | - Kohei Inui
- Graduate School of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan
| | - Yuki Kumai
- Graduate School of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan
| | - Ryo Yoshida
- Department of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku 113-8656, Japan
| | - Daisuke Suzuki
- Graduate School of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan
- Division of Smart Textiles, Institute for Fiber Engineering, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan
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19
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Moreno AJ, Lo Verso F. Computational investigation of microgels: synthesis and effect of the microstructure on the deswelling behavior. SOFT MATTER 2018; 14:7083-7096. [PMID: 30118116 DOI: 10.1039/c8sm01407h] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We present computer simulations of a realistic model of microgels. Unlike the regular network frameworks usually assumed in the simulation literature, we model and simulate a realistic and efficient synthesis route, mimicking cross-linking of functionalized chains inside a cavity. This model is inspired, e.g., by microfluidic fabrication of microgels from macromolecular precursors and is different from standard polymerization routes. The assembly of the chains is mediated by a low fraction of interchain crosslinks. The microgels are polydisperse in size and shape but globally spherical objects. In order to deeply understand the microgel structure and eventually improve the synthesis protocol we characterize their conformational properties and deswelling kinetics, and compare them with the results found for microgels obtained via underlying regular (diamond-like) structures. For the same molecular weight, monomer concentration and effective degree of cross-linking, the specific microstructure of the microgel has no significant effect on the locus of the volume phase transition (VPT). However, it strongly affects the deswelling kinetics, as revealed by a consistent analysis of the domain growth during the microgel collapse. Though both the disordered and the regular networks exhibit a similar early growth of the domains, an acceleration is observed in the regular network at the late stage of the collapse. Similar trends are found for the dynamic correlations coupled to the domain growth. As a consequence, the fast late processes for the domain growth and the dynamic correlations in the regular network are compensated, and the dynamic correlations follow a power-law dependence on the growing length scale that is independent of the microgel microstructure.
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Affiliation(s)
- Angel J Moreno
- Centro de Física de Materiales (CSIC, UPV/EHU) and Materials Physics Center MPC, Paseo Manuel de Lardizabal 5, 20018 San Sebastián, Spain.
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20
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Huo M, Song G, Zhang J, Wei Y, Yuan J. Nonspherical Liquid Crystalline Assemblies with Programmable Shape Transformation. ACS Macro Lett 2018; 7:956-961. [PMID: 35650972 DOI: 10.1021/acsmacrolett.8b00409] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Liquid crystalline (LC) assemblies with tailored shape and programmable shape transformation were prepared via polymerization-induced self-assembly. The influence of polymerization temperature and solvent on the shape of the LC assemblies indicated that shape of the LC assemblies could be delicately regulated by the repulsive interaction among the solvophilic chains and LC ordering. Programmable shape transformation of ellipsoidal LC assemblies was achieved, taking advantage of the smectic-to-isotropic phase transition. The ellipsoidal assemblies could remain ellipsoids or transform to faceted spheres and spheres, depending on the temperature procedure used. Besides, the generated spheres could be reshaped to ellipsoids with high shape recovery ratio. Small angle X-ray scattering study indicated that the interplay of the reversible smectic-to-isotropic phase transition and kinetic trapping underpins the programmed shape transformation. As a general approach to LC assemblies with programmable shape transformation, our strategy would provide a reliable platform for nanoactuators, nanomotors, and adaptive colloidal devices.
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Affiliation(s)
| | - Guangjie Song
- CAS Key Laboratory of Engineering Plastics and CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, China
| | - Jun Zhang
- CAS Key Laboratory of Engineering Plastics and CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, China
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21
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Wolff HJM, Kather M, Breisig H, Richtering W, Pich A, Wessling M. From Batch to Continuous Precipitation Polymerization of Thermoresponsive Microgels. ACS APPLIED MATERIALS & INTERFACES 2018; 10:24799-24806. [PMID: 29952202 DOI: 10.1021/acsami.8b06920] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Microgels are commonly synthesized in batch experiments, yielding quantities sufficient to perform characterization experiments for physical property studies. With increasing attention on the application potential of microgels, little attention is yet paid to the questions (a) whether they can be produced continuously on a larger scale, (b) whether synthesis routes can be easily transferred from batch to continuous synthesis, and (c) whether their properties can be precisely controlled as a function of synthesis parameters under continuous flow reaction conditions. We present a new continuous synthesis process of two typical but different microgel systems. Their size, size distribution, and temperature-responsive behavior are compared in depth to those of microgels synthesized using batch processes, and the influence of premixing and surfactant is also investigated. For the surfactant-free poly( N-vinylcaprolactam) and poly( N-isopropylacrylamide) systems, microgels are systematically smaller, while the actual size is depending on the premixing of the reaction solutions. However, by the use of a surfactant, the size difference between batch and continuous preparation diminishes, resulting in equal-sized microgels. Temperature-induced swelling-deswelling of microgels synthesized under continuous flow conditions was similar to that of their analogues synthesized using the batch polymerization process. Additionally, investigation of the internal microgel structure using static light scattering showed no significant changes between microgels prepared under batch and continuous conditions. The work encourages synthesis concepts of sequential chemical conditions in continuous flow reactors to prepare precisely tuned new microgel systems.
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Affiliation(s)
| | - Michael Kather
- DWI-Leibniz Institute for Interactive Materials , 52074 Aachen , Germany
| | | | | | - Andrij Pich
- DWI-Leibniz Institute for Interactive Materials , 52074 Aachen , Germany
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22
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Wang Y, Huo M, Zeng M, Liu L, Ye QQ, Chen X, Li D, Peng L, Yuan JY. CO2-responsive Polymeric Fluorescent Sensor with Ultrafast Response. CHINESE JOURNAL OF POLYMER SCIENCE 2018. [DOI: 10.1007/s10118-018-2167-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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23
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Wang H, Chen Q, Zhou S. Carbon-based hybrid nanogels: a synergistic nanoplatform for combined biosensing, bioimaging, and responsive drug delivery. Chem Soc Rev 2018; 47:4198-4232. [PMID: 29667656 DOI: 10.1039/c7cs00399d] [Citation(s) in RCA: 141] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Nanosized crosslinked polymer networks, named as nanogels, are playing an increasingly important role in a diverse range of applications by virtue of their porous structures, large surface area, good biocompatibility and responsiveness to internal and/or external chemico-physical stimuli. Recently, a variety of carbon nanomaterials, such as carbon quantum dots, graphene/graphene oxide nanosheets, fullerenes, carbon nanotubes, and nanodiamonds, have been embedded into responsive polymer nanogels, in order to integrate the unique electro-optical properties of carbon nanomaterials with the merits of nanogels into a single hybrid nanogel system for improvement of their applications in nanomedicine. A vast number of studies have been pursued to explore the applications of carbon-based hybrid nanogels in biomedical areas for biosensing, bioimaging, and smart drug carriers with combinatorial therapies and/or theranostic ability. New synthetic methods and structures have been developed to prepare carbon-based hybrid nanogels with versatile properties and functions. In this review, we summarize the latest developments and applications and address the future perspectives of these carbon-based hybrid nanogels in the biomedical field.
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Affiliation(s)
- Hui Wang
- High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, Anhui, P. R. China.
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24
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Li X, Yuan S, Shea KJ, Qiu G, Lu X, Zhang R. Redox/temperature responsive nonionic nanogel and photonic crystal hydrogel: Comparison between N, N′-Bis(acryloyl)cystamine and N, N′-methylenebisacrylamide. POLYMER 2018. [DOI: 10.1016/j.polymer.2017.12.066] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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25
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Zhang Q, Serpe MJ, Mugo SM. Stimuli Responsive Polymer-Based 3D Optical Crystals for Sensing. Polymers (Basel) 2017; 9:E436. [PMID: 30965852 PMCID: PMC6418830 DOI: 10.3390/polym9110436] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Revised: 08/23/2017] [Accepted: 08/25/2017] [Indexed: 11/16/2022] Open
Abstract
3D optical crystals have found their applications in sensing, actuation, optical devices, batteries, supercapacitors, etc. The 3D optical crystal devices are comprised of two main components: colloidal gels and nanoparticles. Nanoparticles self-assemble into face center cubic structures in colloidal gels. The inherent 3D optical crystal structure leads to display of structural colors on these devices following light impingement. As such, these optical properties have led to the utilization of these 3D optical crystals as self-reporting colorimetric sensors, which is the focus of this review paper. While there is extensive work done so far on these materials to exhaustively be covered in this review, we focus here in on: mechanism of color display, materials and preparation of 3D optical crystals, introduction of recent sensing examples, and combination of 3D optical crystals with molecular imprinting technology. The aim of this review is to familiarize the reader with recent developments in the area and to encourage further research in this field to overcome some of its challenges as well as to inspire creative innovations of these materials.
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Affiliation(s)
- Qiang Zhang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China.
| | - Michael J Serpe
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada.
| | - Samuel M Mugo
- Physical Sciences Department, MacEwan University, Edmonton, AB T5J 4S2, Canada.
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26
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Lanzalaco S, Armelin E. Poly(N-isopropylacrylamide) and Copolymers: A Review on Recent Progresses in Biomedical Applications. Gels 2017; 3:E36. [PMID: 30920531 PMCID: PMC6318659 DOI: 10.3390/gels3040036] [Citation(s) in RCA: 200] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 09/29/2017] [Accepted: 10/03/2017] [Indexed: 11/16/2022] Open
Abstract
The innate ability of poly(N-isopropylacrylamide) (PNIPAAm) thermo-responsive hydrogel to copolymerize and to graft synthetic polymers and biomolecules, in conjunction with the highly controlled methods of radical polymerization which are now available, have expedited the widespread number of papers published in the last decade-especially in the biomedical field. Therefore, PNIPAAm-based hydrogels are extensively investigated for applications on the controlled delivery of active molecules, in self-healing materials, tissue engineering, regenerative medicine, or in the smart encapsulation of cells. The most promising polymers for biodegradability enhancement of PNIPAAm hydrogels are probably poly(ethylene glycol) (PEG) and/or poly(ε-caprolactone) (PCL), whereas the biocompatibility is mostly achieved with biopolymers. Ultimately, advances in three-dimensional bioprinting technology would contribute to the design of new devices and medical tools with thermal stimuli response needs, fabricated with PNIPAAm hydrogels.
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Affiliation(s)
- Sonia Lanzalaco
- Industrial and Digital Innovation Department (DIID), Chemical Engineering, University of Palermo, Viale delle Scienze, Ed. 8, 90128 Palermo, Italy.
| | - Elaine Armelin
- Departament d'Enginyeria Química, EEBE, Universitat Politècnica de Catalunya, C/d'Eduard Maristany, 10-14, Building I, E-08019 Barcelona, Spain.
- Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Campus Diagonal Besòs (EEBE), C/d'Eduard Maristany 10-14, Edifici IS, 08019 Barcelona, Spain.
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27
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Gao Y, Wei M, Li X, Xu W, Ahiabu A, Perdiz J, Liu Z, Serpe MJ. Stimuli-responsive polymers: Fundamental considerations and applications. Macromol Res 2017. [DOI: 10.1007/s13233-017-5088-7] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Zhang Q, Colazo J, Berg D, Mugo SM, Serpe MJ. Multiresponsive Nanogels for Targeted Anticancer Drug Delivery. Mol Pharm 2017; 14:2624-2628. [DOI: 10.1021/acs.molpharmaceut.7b00325] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Qiang Zhang
- Department
of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Juan Colazo
- Department
of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Darren Berg
- Physical
Sciences Department, MacEwan University, Edmonton, AB T5J 4S2, Canada
| | - Samuel M. Mugo
- Physical
Sciences Department, MacEwan University, Edmonton, AB T5J 4S2, Canada
| | - Michael J. Serpe
- Department
of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
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29
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Dinh ND, Luo R, Christine MTA, Lin WN, Shih WC, Goh JCH, Chen CH. Effective Light Directed Assembly of Building Blocks with Microscale Control. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13. [PMID: 28481437 DOI: 10.1002/smll.201700684] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Indexed: 05/14/2023]
Abstract
Light-directed forces have been widely used to pattern micro/nanoscale objects with precise control, forming functional assemblies. However, a substantial laser intensity is required to generate sufficient optical gradient forces to move a small object in a certain direction, causing limited throughput for applications. A high-throughput light-directed assembly is demonstrated as a printing technology by introducing gold nanorods to induce thermal convection flows that move microparticles (diameter = 40 µm to several hundreds of micrometers) to specific light-guided locations, forming desired patterns. With the advantage of effective light-directed assembly, the microfluidic-fabricated monodispersed biocompatible microparticles are used as building blocks to construct a structured assembly (≈10 cm scale) in ≈2 min. The control with microscale precision is approached by changing the size of the laser light spot. After crosslinking assembly of building blocks, a novel soft material with wanted pattern is approached. To demonstrate its application, the mesenchymal stem-cell-seeded hydrogel microparticles are prepared as functional building blocks to construct scaffold-free tissues with desired structures. This light-directed fabrication method can be applied to integrate different building units, enabling the bottom-up formation of materials with precise control over their internal structure for bioprinting, tissue engineering, and advanced manufacturing.
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Affiliation(s)
- Ngoc-Duy Dinh
- Department of Biomedical Engineering, National University of Singapore, 21 Lower Kent Ridge Road, Singapore, 119077
| | - Rongcong Luo
- Department of Biomedical Engineering, National University of Singapore, 21 Lower Kent Ridge Road, Singapore, 119077
| | | | - Weikang Nicholas Lin
- Department of Biomedical Engineering, National University of Singapore, 21 Lower Kent Ridge Road, Singapore, 119077
| | - Wei-Chuan Shih
- Departments of Electrical and Computer Engineering, Biomedical Engineering and Chemistry, University of Houston, 4800 Calhoun Rd, Houston, TX, 77004, USA
| | - James Cho-Hong Goh
- Department of Biomedical Engineering, National University of Singapore, 21 Lower Kent Ridge Road, Singapore, 119077
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, 21 Lower Kent Ridge Road, Singapore, 119077
| | - Chia-Hung Chen
- Department of Biomedical Engineering, National University of Singapore, 21 Lower Kent Ridge Road, Singapore, 119077
- Singapore Institute of Neurotechnology (SINAPSE), National University of Singapore, 21 Lower Kent Ridge Road, Singapore, 119077
- Biomedical Institute for Global Health Research & Technology (BIGHEART), National University of Singapore, 21 Lower Kent Ridge Road, Singapore, 119077
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30
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Ahiabu A, Serpe MJ. Rapidly Responding pH- and Temperature-Responsive Poly ( N-Isopropylacrylamide)-Based Microgels and Assemblies. ACS OMEGA 2017; 2:1769-1777. [PMID: 31457540 PMCID: PMC6640923 DOI: 10.1021/acsomega.7b00103] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 04/18/2017] [Indexed: 05/29/2023]
Abstract
Rapidly responding stimuli-responsive materials can have a benefit in a myriad of applications, for example, sensing and biosensing, actuation, and in drug delivery systems. Thermo- and pH-responsive materials have been among the most widely studied, and can be triggered at physiologically relevant temperatures and pH. Here, we have used a "homologous series" of acids based on the acrylic acid (AAc) backbone and incorporated them into N-isopropylacrylamide (NIPAm)-based microgels. Specifically, the acids used were AAc, methacrylic acid (MAAc), ethylacrylic acid (EAAc), and butylacrylic acid (BAAc), which have pK a's in the range of 4.25-7.4. The resultant microgels were characterized by optical microscopy, and their responsivity to temperature and pH studied by dynamic light scattering. The microgels were subsequently used to generate optical devices (etalons) and their pH and temperature response was also investigated. We found that the devices composed of BAAc-modified microgels exhibit unusually fast response kinetics relative to those of the rest of the devices. We also found that the speed of the response decreased as the length of the acid pendant group decreased, with AAc-modified microgel-based devices exhibiting the slowest response kinetics. Finally, we showed that the kinetics of the device's temperature response also decreased as the length of the acid pendant group decreased, which we hypothesize is a consequence of the hydrophobicity of the acid groups, that is, increased hydrophobicity leads to faster responses. Understanding this behavior can lead to the rational design of fast responding materials for the applications mentioned above.
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Affiliation(s)
- Andrews Ahiabu
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Michael J. Serpe
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
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31
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Battista E, Causa F, Netti PA. Bioengineering Microgels and Hydrogel Microparticles for Sensing Biomolecular Targets. Gels 2017; 3:E20. [PMID: 30920517 PMCID: PMC6318684 DOI: 10.3390/gels3020020] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 05/11/2017] [Accepted: 05/23/2017] [Indexed: 12/17/2022] Open
Abstract
Hydrogels, and in particular microgels, are playing an increasingly important role in a diverse range of applications due to their hydrophilic, biocompatible, and highly flexible chemical characteristics. On this basis, solution-like environment, non-fouling nature, easy probe accessibility and target diffusion, effective inclusion of reporting moieties can be achieved, making them ideal substrates for bio-sensing applications. In fact, hydrogels are already successfully used in immunoassays as well as sensitive nucleic acid assays, also enabling hydrogel-based suspension arrays. In this review, we discuss key parameters of hydrogels in the form of micron-sized particles to be used in sensing applications, paying attention to the protein and oligonucleotides (i.e., miRNAs) targets as most representative kind of biomarkers.
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Affiliation(s)
- Edmondo Battista
- Interdisciplinary Research Centre on Biomaterials (CRIB) and Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale (DICMAPI), University of Naples Federico II, Piazzale Tecchio 80, 80125 Napoli, Italy.
| | - Filippo Causa
- Interdisciplinary Research Centre on Biomaterials (CRIB) and Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale (DICMAPI), University of Naples Federico II, Piazzale Tecchio 80, 80125 Napoli, Italy.
- Center for Advanced Biomaterials for HealthCare@CRIB, Istituto Italiano di Tecnologia, Largo Barsanti e Matteucci 53, 80125 Napoli, Italy.
| | - Paolo Antonio Netti
- Interdisciplinary Research Centre on Biomaterials (CRIB) and Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale (DICMAPI), University of Naples Federico II, Piazzale Tecchio 80, 80125 Napoli, Italy.
- Center for Advanced Biomaterials for HealthCare@CRIB, Istituto Italiano di Tecnologia, Largo Barsanti e Matteucci 53, 80125 Napoli, Italy.
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32
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Zhou N, Cao X, Du X, Wang H, Wang M, Liu S, Nguyen K, Schmidt-Rohr K, Xu Q, Liang G, Xu B. Hyper-Crosslinkers Lead to Temperature- and pH-Responsive Polymeric Nanogels with Unusual Volume Change. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611479] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Ning Zhou
- Department of Chemistry; Brandeis University; 415 South Street Waltham MA 02454 USA
| | - Xiaoyan Cao
- Department of Chemistry; Brandeis University; 415 South Street Waltham MA 02454 USA
| | - Xuewen Du
- Department of Chemistry; Brandeis University; 415 South Street Waltham MA 02454 USA
| | - Huaimin Wang
- Department of Chemistry; Brandeis University; 415 South Street Waltham MA 02454 USA
| | - Ming Wang
- Department of Biomedical Engineering; Tufts University; 419 Boston Ave Medford MA 02155 USA
| | - Shuang Liu
- Department of Chemistry; University of Science and Technology of China; 96 Jinzhai Road, Hefei Anhui 230026 China
| | - Khang Nguyen
- Department of Chemistry; Brandeis University; 415 South Street Waltham MA 02454 USA
| | - Klaus Schmidt-Rohr
- Department of Chemistry; Brandeis University; 415 South Street Waltham MA 02454 USA
| | - Qiaobing Xu
- Department of Biomedical Engineering; Tufts University; 419 Boston Ave Medford MA 02155 USA
| | - Gaolin Liang
- Department of Chemistry; University of Science and Technology of China; 96 Jinzhai Road, Hefei Anhui 230026 China
| | - Bing Xu
- Department of Chemistry; Brandeis University; 415 South Street Waltham MA 02454 USA
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33
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Zhou N, Cao X, Du X, Wang H, Wang M, Liu S, Nguyen K, Schmidt-Rohr K, Xu Q, Liang G, Xu B. Hyper-Crosslinkers Lead to Temperature- and pH-Responsive Polymeric Nanogels with Unusual Volume Change. Angew Chem Int Ed Engl 2017; 56:2623-2627. [DOI: 10.1002/anie.201611479] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 01/10/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Ning Zhou
- Department of Chemistry; Brandeis University; 415 South Street Waltham MA 02454 USA
| | - Xiaoyan Cao
- Department of Chemistry; Brandeis University; 415 South Street Waltham MA 02454 USA
| | - Xuewen Du
- Department of Chemistry; Brandeis University; 415 South Street Waltham MA 02454 USA
| | - Huaimin Wang
- Department of Chemistry; Brandeis University; 415 South Street Waltham MA 02454 USA
| | - Ming Wang
- Department of Biomedical Engineering; Tufts University; 419 Boston Ave Medford MA 02155 USA
| | - Shuang Liu
- Department of Chemistry; University of Science and Technology of China; 96 Jinzhai Road, Hefei Anhui 230026 China
| | - Khang Nguyen
- Department of Chemistry; Brandeis University; 415 South Street Waltham MA 02454 USA
| | - Klaus Schmidt-Rohr
- Department of Chemistry; Brandeis University; 415 South Street Waltham MA 02454 USA
| | - Qiaobing Xu
- Department of Biomedical Engineering; Tufts University; 419 Boston Ave Medford MA 02155 USA
| | - Gaolin Liang
- Department of Chemistry; University of Science and Technology of China; 96 Jinzhai Road, Hefei Anhui 230026 China
| | - Bing Xu
- Department of Chemistry; Brandeis University; 415 South Street Waltham MA 02454 USA
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34
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Abstract
Responsive polymer-based materials are capable of altering their chemical and/or physical properties upon exposure to external stimuli. This review highlights their use for sensing and biosensing, drug delivery, and artificial muscles/actuators.
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Affiliation(s)
- Menglian Wei
- Department of Chemistry
- University of Alberta
- Edmonton
- Canada
| | - Yongfeng Gao
- Department of Chemistry
- University of Alberta
- Edmonton
- Canada
| | - Xue Li
- Department of Chemistry
- University of Alberta
- Edmonton
- Canada
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35
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Nyström L, Malmsten M. Surface-bound microgels - From physicochemical properties to biomedical applications. Adv Colloid Interface Sci 2016; 238:88-104. [PMID: 27865424 DOI: 10.1016/j.cis.2016.11.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 11/02/2016] [Accepted: 11/04/2016] [Indexed: 12/18/2022]
Abstract
Microgels offer robust and facile approaches for surface modification, as well as opportunities to introduce biological functionality by loading such structures with bioactive agents, e.g., in the context of drug delivery, functional biomaterials, and biosensors. As such, they provide a versatile approach for the design of surfaces with pre-determined characteristics compared to more elaborate bottom-up approaches, such as layer-by-layer deposition and surface-initiated polymerization. In the present overview, properties of surface-bound microgels are discussed, ranging from physical adsorption and covalent grafting in dilute systems, to directed self-assembly, multilayer structures, and composites, as well as loading an release of drugs and other cargo molecules into/from such systems, and biomedical applications of these.
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36
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Mok Y, Noh M, Chan Kim G, Song Y, Kim H, Kim S, Yi S, Seo JH, Lee Y. Light-tunable thermoresponsive behavior of branched polyethylenimine derivatives in water. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.11.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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37
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Song Q, Gao Y, Xu JF, Qin B, Serpe MJ, Zhang X. Supramolecular Microgels Fabricated from Supramonomers. ACS Macro Lett 2016; 5:1084-1088. [PMID: 35658185 DOI: 10.1021/acsmacrolett.6b00592] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This letter describes a new method for fabricating supramolecular microgels from supramonomers. To this end, we designed and assembled supramonomers with one acrylate moiety on each end on the basis of noncovalent host-guest interactions, which could be utilized as a cross-linker. Then supramolecular microgels were fabricated through the copolymerization of supramonomers and N-isopropylacrylamide (NIPAm). The supramolecular microgels not only showed temperature-responsive properties as expected from conventional PNIPAm-based microgels but also exhibited stimuli-responsive and degradable properties benefiting from the dynamic nature of supramonomers. In addition, it was found that the degradation kinetics of the supramolecular microgels was related greatly to the structure of the microgels, providing a way to tune the degradation kinetics of the supramolecular microgels. Various supramolecular microgels with desired structure and function are supposed to be facilely fabricated from supramonomers. It is anticipated that the supramolecular microgels can enrich the application of microgels by easily endowing the microgels with stimuli-responsive and degradable properties.
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Affiliation(s)
- Qiao Song
- The Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Yongfeng Gao
- Department
of Chemistry, University of Alberta, Edmonton, Alberta, Canada
| | - Jiang-Fei Xu
- The Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Bo Qin
- The Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Michael J. Serpe
- Department
of Chemistry, University of Alberta, Edmonton, Alberta, Canada
| | - Xi Zhang
- The Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
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38
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Zhang QM, Berg D, Duan J, Mugo SM, Serpe MJ. Optical Devices Constructed from Ferrocene-Modified Microgels for H 2O 2 Sensing. ACS APPLIED MATERIALS & INTERFACES 2016; 8:27264-27269. [PMID: 27680293 DOI: 10.1021/acsami.6b11462] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Ferrocene-modified poly(N-isopropylacrylamide)-based microgels were synthesized, characterized, and used to construct optical devices (etalons). The response of the microgels and etalons to H2O2 was investigated, and we show that both the microgel diameter and the optical properties of the etalons depend on the solution concentration of H2O2 from 0.6 to 35 mM. This behavior is a direct result of the oxidation of ferrocene, which influences the microgel diameter. This was also demonstrated by electrochemical-mediated oxidation/reduction of ferrocene using cyclic voltammetry. We go on to show that these materials could be used to monitor H2O2 that is generated from enzymatic reactions. Specifically, we show that the H2O2 generated from the oxidation of glucose catalyzed by glucose oxidase could be quantified. Finally, the devices can be reused multiple times via a regeneration process. This investigation illustrates the versatility of the etalon system to detect species of broad relevance and how they could potentially be used to quantify products of biological reactions.
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Affiliation(s)
- Qiang Matthew Zhang
- Department of Chemistry, University of Alberta , Edmonton, AB T6G 2G2, Canada
| | - Darren Berg
- Physical Sciences Department, MacEwan University , Edmonton, AB T5J 4S2, Canada
| | - Jiaqi Duan
- Department of Chemistry, University of Alberta , Edmonton, AB T6G 2G2, Canada
| | - Samuel M Mugo
- Physical Sciences Department, MacEwan University , Edmonton, AB T5J 4S2, Canada
| | - Michael J Serpe
- Department of Chemistry, University of Alberta , Edmonton, AB T6G 2G2, Canada
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39
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Zhang X, Zhuo R. Dual UV- and pH-Responsive Supramolecular Vesicles Mediated by Host-Guest Interactions for Drug Controlled Release. MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201600177] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xiaojin Zhang
- Key Laboratory of Biomedical Polymers of Ministry of Education; Department of Chemistry; Wuhan University; Wuhan 430072 China
| | - Renxi Zhuo
- Key Laboratory of Biomedical Polymers of Ministry of Education; Department of Chemistry; Wuhan University; Wuhan 430072 China
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40
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Zhu Y, Gao S, Hu L, Jin J. Thermoresponsive Ultrathin Membranes with Precisely Tuned Nanopores for High-Flux Separation. ACS APPLIED MATERIALS & INTERFACES 2016; 8:13607-13614. [PMID: 27177239 DOI: 10.1021/acsami.6b03389] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
With the growing demand for small- and large-scale bioprocesses, advanced membranes with high energy efficiency are highly required. However, conventional polymer-based membranes often have to sacrifice selectivity for permeability. In this work, we report the fabrication of a thermoresponsive composite ultrathin membrane with precisely controlled nanopores for high-throughput separation. The composite membrane is made by grafting a PEG analogue thermoresponsive copolymer onto an ultrathin single-wall carbon nanotubes (SWCNTs) membrane via π-π interaction with no use of the common "grafting from" synthesis approach. The composite membrane exhibits ultrahigh water permeation flux as high as 6430 L m(-2) h(-1) at 40 °C, and more importantly, the pore size of the membrane could be finely adjusted by utilizing the thermoresponsive property of the grafted copolymer. With the temperature changing below and above the lower critical solution temperature (LCST) of the copolymer, the effective pore size of the membrane can be tuned precisely between approximately 12 and 14 nm, which could be applied to effectively separate materials with very small size differences through size sieving.
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Affiliation(s)
- Yuzhang Zhu
- i-Lab and CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences , Suzhou 215123, China
| | - Shoujian Gao
- i-Lab and CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences , Suzhou 215123, China
| | - Liang Hu
- i-Lab and CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences , Suzhou 215123, China
| | - Jian Jin
- i-Lab and CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences , Suzhou 215123, China
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41
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Stimuli-Responsive Assemblies for Sensing Applications. Gels 2016; 2:gels2010008. [PMID: 30674140 PMCID: PMC6318645 DOI: 10.3390/gels2010008] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 01/27/2016] [Accepted: 02/01/2016] [Indexed: 12/31/2022] Open
Abstract
Poly (N-isopropylacrylamide) (pNIPAm)-based hydrogels and hydrogel particles (microgels) have been extensively studied since their discovery a number of decades ago. While their utility seems to have no limit, this feature article is focused on their development and application for sensing small molecules, macromolecules, and biomolecules. We highlight hydrogel/microgel-based photonic materials that have order in one, two, or three dimensions, which exhibit optical properties that depend on the presence and concentration of various analytes. A particular focus is put on one-dimensional materials developed in the Serpe Group.
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42
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Yu S, Han Z, Jiao X, Chen D, Li C. Ultrathin polymer gel-infiltrated monolayer colloidal crystal films for rapid colorimetric chemical sensing. RSC Adv 2016. [DOI: 10.1039/c6ra12331g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The ultrathin polymer gel-infiltrated monolayer colloidal crystal film shows rapid, linear, reversible, and colorimetric responses to pH variations.
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Affiliation(s)
- Shimo Yu
- National Engineering Research Center for Colloidal Materials
- School of Chemistry and Chemical Engineering
- Shandong University
- 250100 Ji'nan
- China
| | - Zhiming Han
- National Engineering Research Center for Colloidal Materials
- School of Chemistry and Chemical Engineering
- Shandong University
- 250100 Ji'nan
- China
| | - Xiuling Jiao
- National Engineering Research Center for Colloidal Materials
- School of Chemistry and Chemical Engineering
- Shandong University
- 250100 Ji'nan
- China
| | - Dairong Chen
- National Engineering Research Center for Colloidal Materials
- School of Chemistry and Chemical Engineering
- Shandong University
- 250100 Ji'nan
- China
| | - Cheng Li
- National Engineering Research Center for Colloidal Materials
- School of Chemistry and Chemical Engineering
- Shandong University
- 250100 Ji'nan
- China
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43
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Zhang QM, Serpe MJ. Versatile Method for Coating Surfaces with Functional and Responsive Polymer-Based Films. ACS APPLIED MATERIALS & INTERFACES 2015; 7:27547-27553. [PMID: 26640982 DOI: 10.1021/acsami.5b09875] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A versatile surface modification technique was developed to yield poly(N-isopropylacrylamide) (pNIPAm) microgel-based thin films on a variety of substrates, e.g., metals, nonmetals, and polymers. Because the chemistry, and hence functionality and responsivity, of the pNIPAm-based microgels is easily tuned, multifunctional and responsive thin films could be generated on many different surfaces without varying the coating conditions. In one case, we showed that fluorescent/light emitting thin films could be generated using crystal violet-modified microgels. Antibacterial films could be obtained using silver nanoparticle-modified pNIPAm-based microgels. Finally, we show that thin films fabricated via the methods here could be used as a component in optical sensors. Although we show only a few examples of the utility of this approach, we feel that the apparent universality of the technique can be extended to countless other applications.
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Affiliation(s)
- Qiang Matthew Zhang
- Department of Chemistry, University of Alberta , 11227 Saskatchewan Drive, Edmonton, Alberta T6G 2G2, Canada
| | - Michael J Serpe
- Department of Chemistry, University of Alberta , 11227 Saskatchewan Drive, Edmonton, Alberta T6G 2G2, Canada
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44
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Jang YJ, Kim K, Tsay OG, Atwood DA, Churchill DG. Update 1 of: Destruction and Detection of Chemical Warfare Agents. Chem Rev 2015; 115:PR1-76. [DOI: 10.1021/acs.chemrev.5b00402] [Citation(s) in RCA: 249] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Yoon Jeong Jang
- Molecular Logic Gate Laboratory, Department of Chemistry, KAIST, Daejeon, 305-701, Republic of Korea
| | - Kibong Kim
- Molecular Logic Gate Laboratory, Department of Chemistry, KAIST, Daejeon, 305-701, Republic of Korea
| | - Olga G. Tsay
- Molecular Logic Gate Laboratory, Department of Chemistry, KAIST, Daejeon, 305-701, Republic of Korea
| | - David A. Atwood
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055, United States
| | - David G. Churchill
- Molecular Logic Gate Laboratory, Department of Chemistry, KAIST, Daejeon, 305-701, Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), 373-1 Guseong-dong, Yuseong-gu, Daejeon, 305−701, Republic of Korea
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45
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Wang T, Wang S, Zhang X, Song G, Yu Y, Chen X, Fu Y, Zhang J, Yang B. Responsive etalon based on PNIPAM@SiO₂ composite spacer with rapid response rate and excellent repeatability for sensing application. NANOTECHNOLOGY 2015; 26:285501. [PMID: 26118366 DOI: 10.1088/0957-4484/26/28/285501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this paper, we demonstrate a responsive etalon fabricated through combining colloidal lithography and surface-initiated atom-transfer radical polymerization (SI-ATRP). The responsive etalon is simply constructed with one responsive spacer sandwiched by two reflective layers, and the middle responsive spacer is constructed by grafting thermo-responsive poly(N-isopropylacrylamide) (PNIPAM) brushes on a SiO2 nanosphere array. The etalon possesses one single interference peak in the visible region, and the interference peak changes sensitively against the concentration of the external stimulant (water vapor) or the temperature of the system, owing to the responsiveness of the PNIPAM brush. Importantly, the as-prepared etalon shows a rapid response rate and excellent stability, and it is also handy to realize the miniaturization and integration of the responsive etalon based on a conventional micro-fabrication method. These features all make the as-prepared responsive etalon an attractive candidate for future sensing applications. We believe such responsive etalons are promising for the fabrication of smart photonic materials and optical sensors that may be useful in tissue engineering, medical diagnosis, public security, and biochip areas.
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Affiliation(s)
- Tieqiang Wang
- Research Center for Molecular Science and Engineering, College of Science, Northeastern University, Shenyang 110004, People's Republic of China
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46
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Li X, Gao Y, Serpe MJ. Reductant-responsive poly(N-isopropylacrylamide) microgels and microgel-based optical materials. CAN J CHEM 2015. [DOI: 10.1139/cjc-2014-0555] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Poly(N-isopropylacrylamide) based hydrogel particles (microgels) crosslinked with N,N′-bis(acryloyl)cystamine were prepared using free-radical precipitation polymerization. By coating a single layer of microgels on a gold-coated glass substrate followed by the addition of another gold layer, an optical device (etalon) was fabricated. The devices were shown to exhibit optical properties that are typical of microgel-based etalons, i.e., they exhibit visual color and unique multipeak reflectance spectra. Unique to the devices here are their ability to change their optical properties in the presence of thiols. Specifically, in the presence of dithiothreitol, the microgel crosslinks were reduced, leading to microgel swelling, which ultimately changes the optical properties of the etalon. We observed a linear relationship between the shift in the position of the reflectance peaks and the concentration of dithiothreitol, which suggests that they can be used to quantify thiols in solution.
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Affiliation(s)
- Xue Li
- Department of Chemistry, University of Alberta, Edmonton, AB, Canada
- Department of Chemistry, University of Alberta, Edmonton, AB, Canada
| | - Yongfeng Gao
- Department of Chemistry, University of Alberta, Edmonton, AB, Canada
- Department of Chemistry, University of Alberta, Edmonton, AB, Canada
| | - Michael J. Serpe
- Department of Chemistry, University of Alberta, Edmonton, AB, Canada
- Department of Chemistry, University of Alberta, Edmonton, AB, Canada
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47
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Li X, Gao Y, Serpe MJ. Responsive Polymer-Based Assemblies for Sensing Applications. Macromol Rapid Commun 2015; 36:1382-92. [DOI: 10.1002/marc.201500066] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 03/06/2015] [Indexed: 02/04/2023]
Affiliation(s)
- Xue Li
- Department of Chemistry; University of Alberta; Edmonton Alberta Canada
| | - Yongfeng Gao
- Department of Chemistry; University of Alberta; Edmonton Alberta Canada
| | - Michael J. Serpe
- Department of Chemistry; University of Alberta; Edmonton Alberta Canada
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48
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Liu BW, Zhou H, Zhou ST, Yuan JY. Macromolecules based on recognition between cyclodextrin and guest molecules: Synthesis, properties and functions. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.01.017] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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49
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Che H, Huo M, Peng L, Ye Q, Guo J, Wang K, Wei Y, Yuan J. CO2-switchable drug release from magneto-polymeric nanohybrids. Polym Chem 2015. [DOI: 10.1039/c4py01800a] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A CO2-responsive well-defined magneto-polymeric drug delivery system has been developed. A dosage release of doxorubicin (DOX) in vitro in a time-controllable manner can be easily executed with alternate CO2/N2 treatment by these smart nanocarriers.
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Affiliation(s)
- Hailong Che
- Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education
- Department of Chemistry
- Tsinghua University
- Beijing
- P. R. China
| | - Meng Huo
- Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education
- Department of Chemistry
- Tsinghua University
- Beijing
- P. R. China
| | - Liao Peng
- Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education
- Department of Chemistry
- Tsinghua University
- Beijing
- P. R. China
| | - Qiquan Ye
- Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education
- Department of Chemistry
- Tsinghua University
- Beijing
- P. R. China
| | - Jun Guo
- Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education
- Department of Chemistry
- Tsinghua University
- Beijing
- P. R. China
| | - Ke Wang
- Key Lab of Bioorganic Phosphorus Chemistry & Chemical Biology of Ministry of Education
- Department of Chemistry
- Tsinghua University
- Beijing
- P. R. China
| | - Yen Wei
- Key Lab of Bioorganic Phosphorus Chemistry & Chemical Biology of Ministry of Education
- Department of Chemistry
- Tsinghua University
- Beijing
- P. R. China
| | - Jinying Yuan
- Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education
- Department of Chemistry
- Tsinghua University
- Beijing
- P. R. China
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50
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Zhang QM, Berg D, Mugo SM, Serpe MJ. Lipase-modified pH-responsive microgel-based optical device for triglyceride sensing. Chem Commun (Camb) 2015; 51:9726-8. [DOI: 10.1039/c5cc02853a] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lipase-modified poly (N-isopropylacrylamide)-based microgels were synthesized, and used to fabricate optical devices (etalons). Triglyceride reacted with lipase to generate fatty acid, which yielded an etalon response.
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Affiliation(s)
| | - Darren Berg
- Physical Sciences Department
- MacEwan University
- Edmonton
- T5J 4S2 Canada
| | - Samuel M. Mugo
- Physical Sciences Department
- MacEwan University
- Edmonton
- T5J 4S2 Canada
| | - Michael J. Serpe
- Department of Chemistry
- University of Alberta
- Edmonton
- T6G 2G2 Canada
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