1
|
Organoselenium functionalized SBA-15 as a new catalyst for the cyanide-free conversion of oximes to nitriles. BMC Chem 2022; 16:99. [PMID: 36414989 PMCID: PMC9682781 DOI: 10.1186/s13065-022-00899-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 11/08/2022] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Here we report a new selenium-based heterogeneous catalyst, which was prepared from the immobilization of diphenyl diselenide on amine-functionalized Santa Barbara Amorphous-15 (SBA-15). The catalyst characterization study has been confirmed by different analysis methods including Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction patterns (XRD), field-emission scanning electron microscopy (FE-SEM), and Brunauer-Emmett-Teller (BET) surface area analysis. RESULTS The newly designed catalyst was successfully applied in the green dehydration reaction of oximes to corresponding nitriles in the presence of hydrogen peroxide/air. To demonstrate the role of the catalyst in this study, the model reaction was also carried out in the absence of the catalyst and a trace yield of the relevant product was achieved. CONCLUSION In this way, a series of nitrile derivatives were obtained with 72-96% yields, also, the catalyst could be separated easily and recycled for four consecutive runs with no obvious drop in catalytic activity.
Collapse
|
2
|
Sanadgol N, Wackerlig J. Developments of Smart Drug-Delivery Systems Based on Magnetic Molecularly Imprinted Polymers for Targeted Cancer Therapy: A Short Review. Pharmaceutics 2020; 12:E831. [PMID: 32878127 PMCID: PMC7558192 DOI: 10.3390/pharmaceutics12090831] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 07/29/2020] [Accepted: 08/29/2020] [Indexed: 12/13/2022] Open
Abstract
Cancer therapy is still a huge challenge, as especially chemotherapy shows several drawbacks like low specificity to tumor cells, rapid elimination of drugs, high toxicity and lack of aqueous solubility. The combination of molecular imprinting technology with magnetic nanoparticles provides a new class of smart hybrids, i.e., magnetic molecularly imprinted polymers (MMIPs) to overcome limitations in current cancer therapy. The application of these complexes is gaining more interest in therapy, due to their favorable properties, namely, the ability to be guided and to generate slight hyperthermia with an appropriate external magnetic field, alongside the high selectivity and loading capacity of imprinted polymers toward a template molecule. In cancer therapy, using the MMIPs as smart-drug-delivery robots can be a promising alternative to conventional direct administered chemotherapy, aiming to enhance drug accumulation/penetration into the tumors while fewer side effects on the other organs. Overview: In this review, we state the necessity of further studies to translate the anticancer drug-delivery systems into clinical applications with high efficiency. This work relates to the latest state of MMIPs as smart-drug-delivery systems aiming to be used in chemotherapy. The application of computational modeling toward selecting the optimum imprinting interaction partners is stated. The preparation methods employed in these works are summarized and their attainment in drug-loading capacity, release behavior and cytotoxicity toward cancer cells in the manner of in vitro and in vivo studies are stated. As an essential issue toward the development of a body-friendly system, the biocompatibility and toxicity of the developed drug-delivery systems are discussed. We conclude with the promising perspectives in this emerging field. Areas covered: Last ten years of publications (till June 2020) in magnetic molecularly imprinted polymeric nanoparticles for application as smart-drug-delivery systems in chemotherapy.
Collapse
Affiliation(s)
| | - Judith Wackerlig
- Department of Pharmaceutical Chemistry, Faculty of Life Sciences, University of Vienna, 1090 Vienna, Austria;
| |
Collapse
|
3
|
Liquid Crystalline Copolymers Containing Sulfonic and Light-Responsive Groups: From Molecular Design to Conductivity. Molecules 2020; 25:molecules25112579. [PMID: 32498249 PMCID: PMC7321325 DOI: 10.3390/molecules25112579] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 05/26/2020] [Accepted: 05/27/2020] [Indexed: 11/27/2022] Open
Abstract
In the search for novel smart multifunctional liquid crystalline materials, we report the synthesis, thermal and structural characterisation, and the conductivity, of a set of new block and statistical copolymers, containing light-responsive mesogenic groups (MeOAzB), polar sulfonic acids (AMPS), and methyl(methacrylate) groups (MMA). By using a cascade of reversible addition-fragmentation chain polymerisations, RAFT, we have tailored different side-chain polymeric structures by controlling monomer composition (MeOAzB/AMPS/MMA) and configuration. We have yielded simultaneous liquid crystalline behaviour and appreciable conductivity in polymers with low concentrations of polar acid groups, by the formation of smectic phases in narrow aggregates. The light-responsiveness of the polymers, via reversible trans-to-cis photoisomerization of azobenzene groups, and the local activation of conductivity at relatively low temperatures, opens the possibility to prepare polymer electrolytes for energy conversion and storage, whose conductivity could be controlled and optimised by external stimuli, including light irradiation.
Collapse
|
4
|
Pd nanoparticle incorporated mesoporous silicas with excellent catalytic activity and dual responsivity. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124074] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
|
5
|
Hu W, Bai X, Wang Y, Lei Z, Luo H, Tong Z. Upper critical solution temperature polymer-grafted hollow mesoporous silica nanoparticles for near-infrared-irradiated drug release. J Mater Chem B 2019; 7:5789-5796. [PMID: 31483429 DOI: 10.1039/c9tb01071h] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Near-infrared (NIR) irradiation responsive drug delivery systems have many advantages, which have attracted extensive interest from researchers. In this study, a NIR-triggered drug release system was established by grafting upper critical solution temperature (UCST) polymers on the surface of hollow mesoporous silica nanoparticles (HMSNs) followed by treatment with the photothermal conversion agent indocyanine green (ICG). The as-prepared UCST polymers showed the clearing temperature of 45 °C, which were advantageous to serve as gatekeepers in the physiological environment (37 °C). Under NIR irradiation, the temperature of the solution was elevated above the clearing point due to the presence of ICG; consequently, the collapsed UCST polymer chains became more hydrophilic; this resulted in the exposure of the mesoporous channels of the HMSNs and achievement of a burst drug release. Moreover, this NIR-responsive delivery system showed good biocompatibility and high anticancer efficiency towards the MCF-7 cancer cells upon exposure to NIR irradiation. In addition, a synergistic effect of thermal and chemo treatment has been achieved by the application of NIR irradiation since cancer cells are more vulnerable to high temperatures than normal cells.
Collapse
Affiliation(s)
- Wei Hu
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology (ATMT), Ministry of Education, Department of Polymer Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China. and Institute of Smart Fiber Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Xiaowen Bai
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology (ATMT), Ministry of Education, Department of Polymer Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Yaping Wang
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology (ATMT), Ministry of Education, Department of Polymer Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China. and Institute of Smart Fiber Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Zhentao Lei
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology (ATMT), Ministry of Education, Department of Polymer Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China. and Institute of Smart Fiber Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Haipeng Luo
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology (ATMT), Ministry of Education, Department of Polymer Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China. and Institute of Smart Fiber Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Zaizai Tong
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology (ATMT), Ministry of Education, Department of Polymer Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China. and Institute of Smart Fiber Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China
| |
Collapse
|
6
|
Vanti L, Mohd Alauddin S, Zaton D, Aripin NFK, Giacinti-Baschetti M, Imrie CT, Ribes-Greus A, Martinez-Felipe A. Ionically conducting and photoresponsive liquid crystalline terpolymers: Towards multifunctional polymer electrolytes. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.08.033] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
7
|
Samadi-Maybodi A, Sadeghi-Maleki MR. Preparation of Mesoporous SBA-15 Supported CdS Quantum Dots and Its Application for Photocatalytic Degradation of Organic Pollutants in Aqueous Media. J Inorg Organomet Polym Mater 2018. [DOI: 10.1007/s10904-018-0918-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
8
|
Tom JC, Brilmayer R, Schmidt J, Andrieu-Brunsen A. Optimisation of Surface-Initiated Photoiniferter-Mediated Polymerisation under Confinement, and the Formation of Block Copolymers in Mesoporous Films. Polymers (Basel) 2017; 9:E539. [PMID: 30965846 PMCID: PMC6418678 DOI: 10.3390/polym9100539] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 10/08/2017] [Accepted: 10/17/2017] [Indexed: 11/16/2022] Open
Abstract
Nature as the ultimate inspiration can direct, gate, and selectively transport species across channels to fulfil a specific targeted function. Harnessing such precision over local structure and functionality at the nanoscale is expected to lead to indispensable developments in synthetic channels for application in catalysis, filtration and sensing, and in drug delivery. By combining mesoporous materials with localised charge-switchable poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) brushes, precisely controlling pore filling and exploring the possibility of incorporating two different responsive polymers, we hope to approach the precision control of natural systems in the absence of an external force. Here, we report a simple one-step approach to prepare a mesoporous silica thin film with ~8 nm pores functionalised with a photoiniferter by combining sol⁻gel chemistry and evaporation-induced self-assembly (EISA). We show that surface-initiated photoiniferter-mediated polymerisation (SI-PIMP) allows the incorporation of a high polymer content up to geometrical pore blocking by the simple application of UV light in the presence of a monomer and solvent, proceeding in a controlled manner in pore sizes below 10 nm, with the potential to tune the material properties through the formation of surface-grafted block copolymers.
Collapse
Affiliation(s)
- Jessica C Tom
- Ernst-Berl Institut für Technische und Makromolekulare Chemie, Technische Universität Darmstadt, Alarich-Weiss-Straße 4, 64287 Darmstadt, Germany.
| | - Robert Brilmayer
- Ernst-Berl Institut für Technische und Makromolekulare Chemie, Technische Universität Darmstadt, Alarich-Weiss-Straße 4, 64287 Darmstadt, Germany.
| | - Johannes Schmidt
- Technische Universität Berlin, Fakultät II, Institut für Chemie, Hardenbergstr. 40, 10623 Berlin, Germany.
| | - Annette Andrieu-Brunsen
- Ernst-Berl Institut für Technische und Makromolekulare Chemie, Technische Universität Darmstadt, Alarich-Weiss-Straße 4, 64287 Darmstadt, Germany.
| |
Collapse
|
9
|
Huang K, Szleifer I. Design of Multifunctional Nanogate in Response to Multiple External Stimuli Using Amphiphilic Diblock Copolymer. J Am Chem Soc 2017; 139:6422-6430. [PMID: 28421749 DOI: 10.1021/jacs.7b02057] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Nature uses the interplay between hydrophobic and electrostatic interactions of disordered proteins to orchestrate complicated molecular gates such as the nuclear pore complex to control the transport of biological masses. Inspired by nature, we here theoretically show that well-defined gate shape, sensitive response to pH and salt concentration, and selectivity in cargo transport can be simultaneously achieved by grafting amphiphilic diblock copolymers made of sequence-controlled hydrophobic and ionizable monomers on the inner surface of solid-state nanopore. As a result, multiple functions such as ionic gating and molecular filtering can be implemented into one single copolymer nanogate. The gate structure and thermodynamics is a result of the self-assembly of the sequence-designed copolymer in the confined geometry that minimizes the free energy of the system. Our theory further predicts a phase transition and discontinuous charge regulation of the confined copolymer that allows logical gating in biosensors and nanofluidic devices. As an example of application, a nanolocker with the potential of molecular pumping has also been designed with the cooperation of two amphiphilic copolymer gates. Our results highlight the importance of polymer sequence in nanogating, and these insights can be used to guide the rational design of polymer-coated smart nanopores.
Collapse
Affiliation(s)
- Kai Huang
- Department of Biomedical Engineering, Northwestern University , Evanston, Illinois 60208, United States
| | - Igal Szleifer
- Department of Biomedical Engineering and Department of Chemistry and Chemistry of Life Processes Institute, Northwestern University , Evanston, Illinois 60208, United States
| |
Collapse
|
10
|
Yu Z, Cai Z, Chen Q, Liu M, Ye L, Ren J, Liao W, Liu S. Engineering β-sheet peptide assemblies for biomedical applications. Biomater Sci 2017; 4:365-74. [PMID: 26700207 DOI: 10.1039/c5bm00472a] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydrogels have been widely studied in various biomedical applications, such as tissue engineering, cell culture, immunotherapy and vaccines, and drug delivery. Peptide-based nanofibers represent a promising new strategy for current drug delivery approaches and cell carriers for tissue engineering. This review focuses on the recent advances in the use of self-assembling engineered β-sheet peptide assemblies for biomedical applications. The applications of peptide nanofibers in biomedical fields, such as drug delivery, tissue engineering, immunotherapy, and vaccines, are highlighted. The current challenges and future perspectives for self-assembling peptide nanofibers in biomedical applications are discussed.
Collapse
Affiliation(s)
- Zhiqiang Yu
- School of Pharmaceutical Sciences, Guangdong Provincial Key Laboratory of New Drug Screening, Southern Medical University, Guangzhou 510515, China.
| | - Zheng Cai
- School of Pharmaceutical Sciences, Guangdong Provincial Key Laboratory of New Drug Screening, Southern Medical University, Guangzhou 510515, China.
| | - Qiling Chen
- School of Pharmaceutical Sciences, Guangdong Provincial Key Laboratory of New Drug Screening, Southern Medical University, Guangzhou 510515, China.
| | - Menghua Liu
- School of Pharmaceutical Sciences, Guangdong Provincial Key Laboratory of New Drug Screening, Southern Medical University, Guangzhou 510515, China.
| | - Ling Ye
- School of Pharmaceutical Sciences, Guangdong Provincial Key Laboratory of New Drug Screening, Southern Medical University, Guangzhou 510515, China.
| | - Jiaoyan Ren
- Department of Food Science and Technology, South China University of Technology, Wushan Road 381, Guangzhou, Guangdong, China.
| | - Wenzhen Liao
- Department of Food Science and Technology, South China University of Technology, Wushan Road 381, Guangzhou, Guangdong, China.
| | - Shuwen Liu
- School of Pharmaceutical Sciences, Guangdong Provincial Key Laboratory of New Drug Screening, Southern Medical University, Guangzhou 510515, China.
| |
Collapse
|
11
|
Zoppe JO, Ataman NC, Mocny P, Wang J, Moraes J, Klok HA. Surface-Initiated Controlled Radical Polymerization: State-of-the-Art, Opportunities, and Challenges in Surface and Interface Engineering with Polymer Brushes. Chem Rev 2017; 117:1105-1318. [PMID: 28135076 DOI: 10.1021/acs.chemrev.6b00314] [Citation(s) in RCA: 587] [Impact Index Per Article: 83.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The generation of polymer brushes by surface-initiated controlled radical polymerization (SI-CRP) techniques has become a powerful approach to tailor the chemical and physical properties of interfaces and has given rise to great advances in surface and interface engineering. Polymer brushes are defined as thin polymer films in which the individual polymer chains are tethered by one chain end to a solid interface. Significant advances have been made over the past years in the field of polymer brushes. This includes novel developments in SI-CRP, as well as the emergence of novel applications such as catalysis, electronics, nanomaterial synthesis and biosensing. Additionally, polymer brushes prepared via SI-CRP have been utilized to modify the surface of novel substrates such as natural fibers, polymer nanofibers, mesoporous materials, graphene, viruses and protein nanoparticles. The last years have also seen exciting advances in the chemical and physical characterization of polymer brushes, as well as an ever increasing set of computational and simulation tools that allow understanding and predictions of these surface-grafted polymer architectures. The aim of this contribution is to provide a comprehensive review that critically assesses recent advances in the field and highlights the opportunities and challenges for future work.
Collapse
Affiliation(s)
- Justin O Zoppe
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
| | - Nariye Cavusoglu Ataman
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
| | - Piotr Mocny
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
| | - Jian Wang
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
| | - John Moraes
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
| | - Harm-Anton Klok
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
| |
Collapse
|
12
|
Gao L, Kong T, Huo Y. Dual Thermoresponsive and pH-Responsive Poly(vinyl alcohol) Derivatives: Synthesis, Phase Transition Study, and Functional Applications. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01316] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Liang Gao
- School
of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, China
| | - Tengfei Kong
- School
of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, China
| | - Yanping Huo
- School
of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, China
| |
Collapse
|
13
|
Karman C, Vilà N, Walcarius A. Amplified Charge Transfer for Anionic Redox Probes through Oriented Mesoporous Silica Thin Films. ChemElectroChem 2016. [DOI: 10.1002/celc.201600303] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Cheryl Karman
- Laboratoire de Chimie Physique et Microbiologie pour l'Environnement (LCPME), UMR 7564, CNRS-; Université de Lorraine; 405 rue de Vandoeuvre 54600 Villers-les-Nancy France
| | - Neus Vilà
- Laboratoire de Chimie Physique et Microbiologie pour l'Environnement (LCPME), UMR 7564, CNRS-; Université de Lorraine; 405 rue de Vandoeuvre 54600 Villers-les-Nancy France
| | - Alain Walcarius
- Laboratoire de Chimie Physique et Microbiologie pour l'Environnement (LCPME), UMR 7564, CNRS-; Université de Lorraine; 405 rue de Vandoeuvre 54600 Villers-les-Nancy France
| |
Collapse
|
14
|
Kuang T, Chang L, Fu D, Yang J, Zhong M, Chen F, Peng X. Improved crystallizability and processability of ultra high molecular weight polyethylene modified by poly(amido amine) dendrimers. POLYM ENG SCI 2016. [DOI: 10.1002/pen.24396] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Tairong Kuang
- National Engineering Research Center of Novel Equipment for Polymer Processing, The Key Laboratory of Polymer Processing Engineering of Ministry of Education, South China University of Technology; Guangzhou 510640 China
- NSEC Center for Affordable Nanoengineering of Polymeric Biomedical Devices, The Ohio State University; Columbus Ohio 43210
| | - Lingqian Chang
- NSEC Center for Affordable Nanoengineering of Polymeric Biomedical Devices, The Ohio State University; Columbus Ohio 43210
| | - Dajiong Fu
- National Engineering Research Center of Novel Equipment for Polymer Processing, The Key Laboratory of Polymer Processing Engineering of Ministry of Education, South China University of Technology; Guangzhou 510640 China
- NSEC Center for Affordable Nanoengineering of Polymeric Biomedical Devices, The Ohio State University; Columbus Ohio 43210
| | - Jintao Yang
- College of Materials Science and Engineering, Zhejiang University of Technology; Hangzhou 310014 China
| | - Mingqiang Zhong
- College of Materials Science and Engineering, Zhejiang University of Technology; Hangzhou 310014 China
| | - Feng Chen
- NSEC Center for Affordable Nanoengineering of Polymeric Biomedical Devices, The Ohio State University; Columbus Ohio 43210
- College of Materials Science and Engineering, Zhejiang University of Technology; Hangzhou 310014 China
| | - Xiangfang Peng
- National Engineering Research Center of Novel Equipment for Polymer Processing, The Key Laboratory of Polymer Processing Engineering of Ministry of Education, South China University of Technology; Guangzhou 510640 China
| |
Collapse
|
15
|
Fu D, Kuang T, Yen YC, Li D, Benatar A, Peng XF, Lee LJ. Polystyrene/multi-wall carbon nanotube composite and its foam assisted by ultrasound vibration. J CELL PLAST 2016. [DOI: 10.1177/0021955x16651253] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Polystyrene/multi-wall carbon nanotube composite with an interconnected honeycomb-like structure was prepared by firstly coating the surface of the polystyrene pellets with multi-wall carbon nanotube, and sequentially welded through an ultrasound vibration technique. The mechanical and morphological properties of as-prepared composite were investigated in various measurements. It was found that an aggregative and honeycomb-like morphology of multi-wall carbon nanotube existed in the polystyrene/multi-wall carbon nanotube composite according to the polarized optical microscopic and scanning electron microscopic results; the ultrasound vibration could benefit to the performance of flexural strength. Furthermore, different composite foams were studied in this work, employing supercritical carbon dioxide as a blowing agent. Compared to other foams prepared by the conventional methods, the compressive strength of the foams derived from as-described novel method, was significantly improved. Also, being ascribed to this interconnected structure by coating carbon nanotube on polystyrene pellets, good electrical conductivity of 0.05–0.11 S/m was achieved in the novel composite foams.
Collapse
Affiliation(s)
- Dajiong Fu
- National Engineering Research Center of Novel Equipment for Polymer Processing, South China University of Technology, Guangzhou, China
- Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, USA
| | - Tairong Kuang
- National Engineering Research Center of Novel Equipment for Polymer Processing, South China University of Technology, Guangzhou, China
- Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, USA
| | - Ying-Chieh Yen
- Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, USA
| | - Dachao Li
- Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, USA
| | - Avraham Benatar
- Department of Materials Science Engineering, The Ohio State University, Columbus, OH, USA
| | - Xiang Fang Peng
- National Engineering Research Center of Novel Equipment for Polymer Processing, South China University of Technology, Guangzhou, China
| | - Ly James Lee
- Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, USA
| |
Collapse
|
16
|
Wang L, Xu SW, Xu HR, Song YL, Liu JT, Luo JP, Cai XX. Spatio-temporally resolved measurement of quantal exocytosis from single cells using microelectrode array modified with poly l-lysine and poly dopamine. CHINESE CHEM LETT 2016. [DOI: 10.1016/j.cclet.2016.01.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
17
|
Effect of surface roughness on performance of magnetoelastic biosensors for the detection of Escherichia coli. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 58:541-7. [DOI: 10.1016/j.msec.2015.08.029] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2015] [Revised: 07/25/2015] [Accepted: 08/21/2015] [Indexed: 11/23/2022]
|
18
|
Tan Y, Zhang W, Li Y, Xia Y, Sui K. Grafting of multi-sensitive PDMAEMA brushes onto carbon nanotubes by ATNRC: tunable thickening/thinning and self-assembly behaviors in aqueous solutions. RSC Adv 2016. [DOI: 10.1039/c6ra20088e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Shear-induced thickening/thinning response of synthesized MWNTs-g-PDMAEMA suspensions was facially adjusted by altering the hydrophobic interaction, amount of f-PDMAEMA and grafted-chain length.
Collapse
Affiliation(s)
- Yeqiang Tan
- Collaborative Innovation Center for Marine Biomass Fibers
- Materials and Textiles of Shandong Province
- School of Materials Science and Engineering
- Qingdao University
- Qingdao
| | - Wenqian Zhang
- Collaborative Innovation Center for Marine Biomass Fibers
- Materials and Textiles of Shandong Province
- School of Materials Science and Engineering
- Qingdao University
- Qingdao
| | - Yanhui Li
- Collaborative Innovation Center for Marine Biomass Fibers
- Materials and Textiles of Shandong Province
- School of Materials Science and Engineering
- Qingdao University
- Qingdao
| | - Yanzhi Xia
- Collaborative Innovation Center for Marine Biomass Fibers
- Materials and Textiles of Shandong Province
- School of Materials Science and Engineering
- Qingdao University
- Qingdao
| | - Kunyan Sui
- Collaborative Innovation Center for Marine Biomass Fibers
- Materials and Textiles of Shandong Province
- School of Materials Science and Engineering
- Qingdao University
- Qingdao
| |
Collapse
|
19
|
Li L, Chen L, Zhang H, Yang Y, Liu X, Chen Y. Temperature and magnetism bi-responsive molecularly imprinted polymers: Preparation, adsorption mechanism and properties as drug delivery system for sustained release of 5-fluorouracil. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 61:158-68. [PMID: 26838836 DOI: 10.1016/j.msec.2015.12.027] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 11/20/2015] [Accepted: 12/14/2015] [Indexed: 01/28/2023]
Abstract
Temperature and magnetism bi-responsive molecularly imprinted polymers (TMMIPs) based on Fe3O4-encapsulating carbon nanospheres were prepared by free radical polymerization, and applied to selective adsorption and controlled release of 5-fluorouracil (5-FU) from an aqueous solution. Characterization results show that the as-synthesized TMMIPs have an average diameter of about 150 nm with a typical core-shell structure, and the thickness of the coating layer is approximately 50 nm. TMMIPs also displayed obvious magnetic properties and thermo-sensitivity. The adsorption results show that the prepared TMMIPs exhibit good adsorption capacity (up to 96.53 mg/g at 25 °C) and recognition towards 5-FU. The studies on 5-FU loading and release in vitro suggest that the release rate increases with increasing temperature. Meanwhile, adsorption mechanisms were explored by using a computational analysis to simulate the imprinted site towards 5-FU. The interaction energy between the imprinted site and 5-FU is -112.24 kJ/mol, originating from a hydrogen bond, Van der Waals forces and a hydrophobic interaction between functional groups located on 5-FU and a NIPAM monomer. The electrostatic potential charges and population analysis results suggest that the imprinted site of 5-FU can be introduced on the surface of TMMIPs, confirming their selective adsorption behavior for 5-FU.
Collapse
Affiliation(s)
- Longfei Li
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Ministry of Education, Taiyuan 030024, China; Research Center on Advanced Materials Science and Technology, Taiyuan University of Technology, Taiyuan 030024, China
| | - Lin Chen
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Ministry of Education, Taiyuan 030024, China; Research Center on Advanced Materials Science and Technology, Taiyuan University of Technology, Taiyuan 030024, China
| | - Huan Zhang
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Ministry of Education, Taiyuan 030024, China; College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Yongzhen Yang
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Ministry of Education, Taiyuan 030024, China; Research Center on Advanced Materials Science and Technology, Taiyuan University of Technology, Taiyuan 030024, China.
| | - Xuguang Liu
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Ministry of Education, Taiyuan 030024, China; College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China.
| | - Yongkang Chen
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Ministry of Education, Taiyuan 030024, China; University of Hertfordshire, School of Engineering and Technology, Hatfield, Hertfordshire AL10 9AB, UK
| |
Collapse
|
20
|
Li D, Fu D, Yen YC, Benatar A, Peng X, Chiu DY, Lee LJ. Ultrasound-assisted-pressure-induced-flow leading to superior polymer/carbon nanotube composites and foams. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.10.058] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
21
|
Tian C, Zhu L, Lin F, Boyes SG. Poly(acrylic acid) Bridged Gadolinium Metal-Organic Framework-Gold Nanoparticle Composites as Contrast Agents for Computed Tomography and Magnetic Resonance Bimodal Imaging. ACS APPLIED MATERIALS & INTERFACES 2015; 7:17765-75. [PMID: 26147906 PMCID: PMC4671634 DOI: 10.1021/acsami.5b03998] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Imaging contrast agents for magnetic resonance imaging (MRI) and computed tomography (CT) have received significant attention in the development of techniques for early stage cancer diagnosis. Gadolinium (Gd)(III), which has seven unpaired electrons and a large magnetic moment, can dramatically influence the water proton relaxation and hence exhibits excellent MRI contrast. On the other hand, gold (Au), which has a high atomic number and high X-ray attenuation coefficient, is an ideal contrast agent candidate for X-ray-based CT imaging. Gd metal-organic framework (MOF) nanoparticles with tunable size, high Gd(III) loading and multivalency can potentially overcome the limitations of clinically utilized Gd chelate contrast agents. In this work, we report for the first time the integration of GdMOF nanoparticles with gold nanoparticles (AuNPs) for the preparation of a MRI/CT bimodal imaging agent. Highly stable hybrid GdMOF/AuNPs composites have been prepared by using poly(acrylic acid) as a bridge between the GdMOF nanoparticles and AuNPs. The hybrid nanocomposites were then evaluated in MRI and CT imaging. The results revealed high longitudinal relaxivity in MRI and excellent CT imaging performance. Therefore, these GdMOF/AuNPs hybrid nanocomposites potentially provide a new platform for the development of multimodal imaging probes.
Collapse
Affiliation(s)
- Chixia Tian
- Department of Chemistry and Geochemistry, Colorado school of Mines, Golden, Colorado. 80401, USA
| | - Liping Zhu
- Department of Chemistry and Geochemistry, Colorado school of Mines, Golden, Colorado. 80401, USA
| | - Feng Lin
- Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, Berkeley CA 94720, USA
| | - Stephen G. Boyes
- Department of Chemistry and Geochemistry, Colorado school of Mines, Golden, Colorado. 80401, USA
- Corresponding Author,
| |
Collapse
|
22
|
Chen F, Jiang X, Kuang T, Chang L, Fu D, Yang Z, Yang J, Fan P, Fei Z, Zhong M. Effect of nanoporous structure and polymer brushes on the ionic conductivity of poly(methacrylic acid)/anode aluminum oxide hybrid membranes. RSC Adv 2015. [DOI: 10.1039/c5ra08990e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Anode aluminum oxide (AAO) porous materials have been widely used in ionic translocation for many biological and chemical studies.
Collapse
Affiliation(s)
- Feng Chen
- College of Materials Science and Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
- NSEC Center for Affordable Nanoengineering of Polymeric Biomedical Devices
| | - Xiaoping Jiang
- College of Materials Science and Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Tairong Kuang
- NSEC Center for Affordable Nanoengineering of Polymeric Biomedical Devices
- The Ohio State University
- Colombus
- USA
- National Engineering Research Center of Novel Equipment for Polymer Processing
| | - Lingqian Chang
- NSEC Center for Affordable Nanoengineering of Polymeric Biomedical Devices
- The Ohio State University
- Colombus
- USA
| | - Dajiong Fu
- NSEC Center for Affordable Nanoengineering of Polymeric Biomedical Devices
- The Ohio State University
- Colombus
- USA
- National Engineering Research Center of Novel Equipment for Polymer Processing
| | - Zhaogang Yang
- NSEC Center for Affordable Nanoengineering of Polymeric Biomedical Devices
- The Ohio State University
- Colombus
- USA
| | - Jintao Yang
- College of Materials Science and Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Ping Fan
- College of Materials Science and Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Zhengdong Fei
- College of Materials Science and Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Mingqiang Zhong
- College of Materials Science and Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| |
Collapse
|