1
|
Wang X, Shi J, Xu Z, Wang D, Song Y, Han G, Wang B, Cao H, Liu Y, Hou J. Targeted delivery of Nitric Oxide triggered by α-Glucosidase to Ameliorate NSAIDs-induced Enteropathy. Redox Biol 2022; 59:102590. [PMID: 36603529 PMCID: PMC9813757 DOI: 10.1016/j.redox.2022.102590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 12/10/2022] [Accepted: 12/23/2022] [Indexed: 12/31/2022] Open
Abstract
Nonsteroidal anti-inflammatory drugs (NSAIDs) increase risks of severe small intestinal injuries. Development of effective therapeutic strategies to overcome this issue remains challenging. Nitric oxide (NO) as a gaseous mediator plays a protective role in small intestinal injuries. However, small intestine-specific delivery systems for NO have not been reported yet. In this study, we reported a small intestine-targeted polymeric NO donor (CS-NO) which was synthesized by covalent grafting of α-glucosidase-activated NO donor onto chitosan. In vitro and in vivo experiments demonstrated that CS-NO could be activated by intestinal α-glucosidase to release NO in the small intestine. Pre-treatment of mice with CS-NO significantly alleviated small intestinal damage induced by indomethacin, as demonstrated by down-regulation of the levels of pro-inflammatory cytokines and chemokines CXCL1/KC. Moreover, CS-NO also attenuated indomethacin-induced gut barrier dysfunction as evidenced by up-regulation of the levels of tight junction proteins and restoration of the levels of goblet cells and MUC2 production. Meanwhile, CS-NO effectively restored the defense function of Paneth cells against pathogens in small intestine. Our present study paves the way to develop NO-based therapeutic strategy for NSAIDs-induced small intestinal injuries.
Collapse
Affiliation(s)
- Xianglu Wang
- The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Key Laboratory of Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, 300070, China,Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Jiarui Shi
- The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Key Laboratory of Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, 300070, China
| | - Zhixin Xu
- The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Key Laboratory of Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, 300070, China
| | - Dan Wang
- Department of Pathology, General Hospital, Tianjin Medical University, Tianjin, China
| | - Yuguang Song
- The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Key Laboratory of Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, 300070, China
| | - Guifang Han
- The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Key Laboratory of Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, 300070, China
| | - Bangmao Wang
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China.
| | - Hailong Cao
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China.
| | - Yangping Liu
- The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Key Laboratory of Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, 300070, China.
| | - Jingli Hou
- The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Tianjin Key Laboratory of Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, 300070, China.
| |
Collapse
|
2
|
Silva RMS, Santos AM, Wong A, Fatibello-Filho O, Moraes FC, Farias MAS. Determination of ofloxacin in the presence of dopamine, paracetamol, and caffeine using a glassy carbon electrode based on carbon nanomaterials and gold nanoparticles. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:3859-3866. [PMID: 36129055 DOI: 10.1039/d2ay01177h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A new electrode was prepared based on functionalized graphene and gold nanoparticles dispersed in a chitosan film. Such an electrochemical sensor determines ofloxacin in the presence of dopamine, paracetamol, and caffeine. Characterization (morphological and electrochemical) was done using scanning electron microscopy, electrochemical impedance spectroscopy, and cyclic voltammetry. The sensor design improved the analytical signal, the electrochemical activity, and the electron transfer rate. Ofloxacin was determined by square-wave voltammetry, with a linear concentration range of 0.10-4.9 μmol L-1 (r = 0.999, LOD = 12 nmol L-1). The proposed sensor showed good repeatability and selectivity and was applied successfully to the determination of ofloxacin in pharmaceutical formulations, synthetic urine, and water river samples. The proposed method proved to be excellent; therefore, it is an alternative method for the determination of ofloxacin.
Collapse
Affiliation(s)
- Rebeca M S Silva
- Department of Chemistry, Federal University of Amazonas, 69080-900, Manaus, AM, Brazil
| | - Anderson M Santos
- Department of Chemistry, Federal University of São Carlos, 13560-970, São Carlos, SP, Brazil
| | - Ademar Wong
- Department of Chemistry, Federal University of São Carlos, 13560-970, São Carlos, SP, Brazil
| | - Orlando Fatibello-Filho
- Department of Chemistry, Federal University of São Carlos, 13560-970, São Carlos, SP, Brazil
| | - Fernando C Moraes
- Department of Chemistry, Federal University of São Carlos, 13560-970, São Carlos, SP, Brazil
| | - Marco A S Farias
- Department of Agroindustrial Technology and Rural Socioeconomics, Federal University of São Carlos, 13600-970, Araras, SP, Brazil.
| |
Collapse
|
3
|
Huang J, Cui W, Liang R, Zhang L, Qiu J. Porous BMTTPA-CS-GO nanocomposite for the efficient removal of heavy metal ions from aqueous solutions. RSC Adv 2021; 11:3725-3731. [PMID: 35424284 PMCID: PMC8694123 DOI: 10.1039/d0ra07836k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Accepted: 12/24/2020] [Indexed: 11/26/2022] Open
Abstract
In this study, a stable, cost-effective and environmentally friendly porous 2,5-bis(methylthio)terephthalaldehyde-chitosan-grafted graphene oxide (BMTTPA-CS-GO) nanocomposite was synthesized by covalently grafting BMTTPA-CS onto the surfaces of graphene oxide and used for removing heavy metal ions from polluted water. According to well-established Hg2+-thioether coordination chemistry, the newly designed covalently linked stable porous BMTTPA-CS-GO nanocomposite with thioether units on the pore walls greatly increases the adsorption capacity of Hg2+ and does not cause secondary pollution to the environment. The results of sorption experiments and inductively coupled plasma mass spectrometry measurements demonstrate that the maximum adsorption capacity of Hg2+ on BMTTPA-CS-GO at pH 7 is 306.8 mg g-1, indicating that BMTTPA-CS-GO has excellent adsorption performance for Hg2+. The experimental results show that this stable, environmentally friendly, cost-effective and excellent adsorption performance of BMTTPA-CS-GO makes it a potential nanocomposite for removing Hg2+ and other heavy metal ions from polluted water, and even drinking water. This study suggests that covalently linked crucial groups on the surface of carbon-based materials are essential for improving the adsorption capacity of adsorbents for heavy metal ions.
Collapse
Affiliation(s)
- Juan Huang
- College of Chemistry, Nanchang University Nanchang 330031 China +86-791-83969518
| | - Weirong Cui
- College of Chemistry, Nanchang University Nanchang 330031 China +86-791-83969518
| | - Ruping Liang
- College of Chemistry, Nanchang University Nanchang 330031 China +86-791-83969518
- Jiangxi Province Key Laboratory of Modern Analytical Science, Nanchang University Nanchang 330031 China
| | - Li Zhang
- College of Chemistry, Nanchang University Nanchang 330031 China +86-791-83969518
| | - Jianding Qiu
- College of Chemistry, Nanchang University Nanchang 330031 China +86-791-83969518
- College of Materials and Chemical Engineering, Pingxiang University Pingxiang 337055 China
| |
Collapse
|
4
|
Deepak, Afgan S, Pal K, Kumar R. Studies on non-gelatinous & thermo-responsive chitosan with the N-isopropylacrylamide by RAFT methodology for control release of levofloxacin. Int J Biol Macromol 2020; 164:2370-2379. [PMID: 32758607 DOI: 10.1016/j.ijbiomac.2020.07.279] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 07/15/2020] [Accepted: 07/18/2020] [Indexed: 11/25/2022]
Abstract
The non-gelatinous and thermo-responsive properties were introduced in chitosan by incorporating the chain of poly(N-isopropylacrylamide) via reversible addition-fragmentation chain transfer (RAFT) polymerization. To achieve this, the reaction was carried out at 80 °C by modifying the chitosan(CS) with RAFT agent as a macroinitiator (CS-RAFT), where the amine group of CS was protected with phthalic anhydride and then reacted with 4-cyano-4-[(dodecyl sulfanyl thiocarbonyl)sulfanyl]-pentanoic acid (CDSTSP) to form CS-RAFT agent. Further, the addition of NIPAAm chains onto CS-RAFT was carried out in N,N'-dimethylformamide (DMF) solvent by using 2,2'-azobisisobutyronitrile (AIBN) as an initiator in N2 atmosphere. The controlled addition of NIPAAm chains on to CS was confirmed by 1H NMR spectroscopy, further, a kinetic study was performed to get the characteristic features of the RAFT reaction. The product was characterized by 1H NMR, FT-IR, UV-Visible spectroscopy, XRD, SEM, and TGA analyses. The product in aqueous solution showed LCST at 2.0 mg/mL on 33 ± 0.1 °C. Further, beads were prepared with the sodium alginate and loaded the water-soluble levofloxacin drug (60% w/w loading was achieved). The drug delivery process was studied in-vitro at 37 ± 0.1 °C & pH 7.4, which shown controlled release of drug up to 32 h and it was 71% of the loaded levofloxacin.
Collapse
Affiliation(s)
- Deepak
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, UP, India
| | - Shere Afgan
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, UP, India
| | - Krishtan Pal
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, UP, India
| | - Rajesh Kumar
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, UP, India.
| |
Collapse
|
5
|
El-Arnaouty MB, Eid M, Abdel Ghaffar AM, Y. Abd El-Wahab S. Electrical Conductivity of Chitosan/Dimethyl Amino Ethyl Methacrylate/Metal Composite Prepared by Gamma Radiation. POLYMER SCIENCE SERIES A 2020. [DOI: 10.1134/s0965545x20060012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
6
|
Cazotti JC, Fritz AT, Garcia‐Valdez O, Smeets NMB, Dubé MA, Cunningham MF. Graft modification of starch nanoparticles with pH‐responsive polymers via nitroxide‐mediated polymerization. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20200337] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Jaime C. Cazotti
- Department of Chemical EngineeringQueen's University Kingston Ontario Canada
| | - Alexander T. Fritz
- Department of Chemical EngineeringQueen's University Kingston Ontario Canada
| | - Omar Garcia‐Valdez
- Department of Chemical EngineeringQueen's University Kingston Ontario Canada
| | - Niels M. B. Smeets
- Department of Research and DevelopmentEcoSynthetix Inc. Burlington Ontario Canada
| | - Marc A. Dubé
- Department of Chemical and Biological Engineering, Centre for Catalysis Research and InnovationUniversity of Ottawa Ottawa Ontario Canada
| | | |
Collapse
|
7
|
Solimando X, Champagne P, Cunningham MF. Synthesis of Biohybrid Particles by Modification of Chitosan Beads via RAFT Polymerization in Dispersed Media. MACROMOL REACT ENG 2020. [DOI: 10.1002/mren.202000029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Xavier Solimando
- Department of Civil Engineering Queen's University 58 University Avenue Kingston ON K7L 3N9 Canada
- Department of Chemical Engineering Queen's University 19 Division Street Kingston ON K7L 3N9 Canada
| | - Pascale Champagne
- Department of Civil Engineering Queen's University 58 University Avenue Kingston ON K7L 3N9 Canada
| | - Michael F. Cunningham
- Department of Chemical Engineering Queen's University 19 Division Street Kingston ON K7L 3N9 Canada
| |
Collapse
|
8
|
Bhattacharjee M, Pramanik NB, Singha NK, Haloi DJ. Recent advances in RDRP-modified chitosan: a review of its synthesis, properties and applications. Polym Chem 2020. [DOI: 10.1039/d0py00918k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
RDRP modified Chitosan exhibits improved hydrophobic, cationic and anionic properties, which make them more useful in diversified applications. This review delineates the recent advancement in RDRP-modified chitosan and their properties.
Collapse
Affiliation(s)
| | | | - Nikhil K. Singha
- Rubber Technology Centre
- Indian Institute of Technology Kharagpur
- India
| | | |
Collapse
|
9
|
Synthesis of water-soluble grafted chitosan copolymers by atom transfer radical polymerization. Polym Bull (Berl) 2019. [DOI: 10.1007/s00289-019-02807-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
10
|
Xu B, Zheng H, Zhou H, Wang Y, Luo K, Zhao C, Peng Y, Zheng X. Adsorptive removal of anionic dyes by chitosan-based magnetic microspheres with pH-responsive properties. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.02.061] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|
11
|
Synthesis and Characterization of Stimuli-Responsive Poly(2-dimethylamino-ethylmethacrylate)-Grafted Chitosan Microcapsule for Controlled Pyraclostrobin Release. Int J Mol Sci 2018. [PMID: 29538323 PMCID: PMC5877715 DOI: 10.3390/ijms19030854] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Controllable pesticide release in response to environmental stimuli is highly desirable for better efficacy and fewer adverse effects. Combining the merits of natural and synthetic polymers, pH and temperature dual-responsive chitosan copolymer (CS-g-PDMAEMA) was facilely prepared through free radical graft copolymerization with 2-(dimethylamino) ethyl 2-methacrylate (DMAEMA) as the vinyl monomer. An emulsion chemical cross-linking method was used to expediently fabricate pyraclostrobin microcapsules in situ entrapping the pesticide. The loading content and encapsulation efficiency were 18.79% and 64.51%, respectively. The pyraclostrobin-loaded microcapsules showed pH-and thermo responsive release. Microcapsulation can address the inherent limitation of pyraclostrobin that is photo unstable and highly toxic on aquatic organisms. Compared to free pyraclostrobin, microcapsulation could dramatically improve its photostability under ultraviolet light irradiation. Lower acute toxicity against zebra fish on the first day and gradually similar toxicity over time with that of pyraclostrobin technical concentrate were in accordance with the release profiles of pyraclostrobin microcapsules. This stimuli-responsive pesticide delivery system may find promising application potential in sustainable plant protection.
Collapse
|
12
|
|
13
|
Seidi F, Salimi H, Shamsabadi AA, Shabanian M. Synthesis of hybrid materials using graft copolymerization on non-cellulosic polysaccharides via homogenous ATRP. Prog Polym Sci 2018. [DOI: 10.1016/j.progpolymsci.2017.07.006] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
14
|
Gong P, Zhao Q, Dai D, Zhang S, Tian Z, Sun L, Ren J, Liu Z. Functionalized Ultrasmall Fluorinated Graphene with High NIR Absorbance for Controlled Delivery of Mixed Anticancer Drugs. Chemistry 2017; 23:17531-17541. [PMID: 28898464 DOI: 10.1002/chem.201702917] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Peiwei Gong
- Department of Chemistry and Chemical Engineering, Institute of Anticancer Agents Development and Theranostic Application, The Key Laboratory of Life-Organic Analysis, and Key Laboratory of Pharmaceutical Intermediate, and Analysis of Natural Medicine, Qufu Normal University, 57 Jingxuan West Road, Qufu, Shandong, P.R. China
| | - Qiao Zhao
- Department of Chemistry and Chemical Engineering, Institute of Anticancer Agents Development and Theranostic Application, The Key Laboratory of Life-Organic Analysis, and Key Laboratory of Pharmaceutical Intermediate, and Analysis of Natural Medicine, Qufu Normal University, 57 Jingxuan West Road, Qufu, Shandong, P.R. China
| | - Dujuan Dai
- Department of Chemistry and Chemical Engineering, Institute of Anticancer Agents Development and Theranostic Application, The Key Laboratory of Life-Organic Analysis, and Key Laboratory of Pharmaceutical Intermediate, and Analysis of Natural Medicine, Qufu Normal University, 57 Jingxuan West Road, Qufu, Shandong, P.R. China
| | - Shumiao Zhang
- Department of Chemistry and Chemical Engineering, Institute of Anticancer Agents Development and Theranostic Application, The Key Laboratory of Life-Organic Analysis, and Key Laboratory of Pharmaceutical Intermediate, and Analysis of Natural Medicine, Qufu Normal University, 57 Jingxuan West Road, Qufu, Shandong, P.R. China
| | - Zhenzhen Tian
- Department of Chemistry and Chemical Engineering, Institute of Anticancer Agents Development and Theranostic Application, The Key Laboratory of Life-Organic Analysis, and Key Laboratory of Pharmaceutical Intermediate, and Analysis of Natural Medicine, Qufu Normal University, 57 Jingxuan West Road, Qufu, Shandong, P.R. China
| | - Lu Sun
- Department of Chemistry and Chemical Engineering, Institute of Anticancer Agents Development and Theranostic Application, The Key Laboratory of Life-Organic Analysis, and Key Laboratory of Pharmaceutical Intermediate, and Analysis of Natural Medicine, Qufu Normal University, 57 Jingxuan West Road, Qufu, Shandong, P.R. China
| | - Jiashuo Ren
- Department of Chemistry and Chemical Engineering, Institute of Anticancer Agents Development and Theranostic Application, The Key Laboratory of Life-Organic Analysis, and Key Laboratory of Pharmaceutical Intermediate, and Analysis of Natural Medicine, Qufu Normal University, 57 Jingxuan West Road, Qufu, Shandong, P.R. China
| | - Zhe Liu
- Department of Chemistry and Chemical Engineering, Institute of Anticancer Agents Development and Theranostic Application, The Key Laboratory of Life-Organic Analysis, and Key Laboratory of Pharmaceutical Intermediate, and Analysis of Natural Medicine, Qufu Normal University, 57 Jingxuan West Road, Qufu, Shandong, P.R. China
| |
Collapse
|
15
|
Shieh YT, Lin YT, Cheng CC. CO 2 -switchable behavior of chitosan- g -poly[(2-dimethylamino)ethyl methacrylate] as an emulsifier. Carbohydr Polym 2017; 170:281-288. [DOI: 10.1016/j.carbpol.2017.04.095] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 04/28/2017] [Accepted: 04/28/2017] [Indexed: 12/01/2022]
|
16
|
Abstract
This review summarizes pH-responsive monomers, polymers and their derivative nano- and micro-structures including micelles, cross-linked micelles, microgels and hydrogels.
Collapse
Affiliation(s)
- G. Kocak
- Department of Chemistry
- Faculty of Arts and Science
- Eskisehir Osmangazi University
- Eskisehir
- Turkey
| | - C. Tuncer
- Department of Chemistry
- Faculty of Arts and Science
- Eskisehir Osmangazi University
- Eskisehir
- Turkey
| | - V. Bütün
- Department of Chemistry
- Faculty of Arts and Science
- Eskisehir Osmangazi University
- Eskisehir
- Turkey
| |
Collapse
|
17
|
Wang S, Liu C, Zhou H, Gao C, Zhang W. An efficient route to synthesize thermoresponsive molecular bottlebrushes of poly[o-aminobenzyl alcohol-graft-poly(N-isopropylacrylamide)]. Polym Chem 2017. [DOI: 10.1039/c6py02188c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The thermoresponsive molecular bottlebrushes of poly[o-aminobenzyl alcohol-graft-poly(N-isopropylacrylamide)] [P(oABA-g-PNIPAM)] were synthesized and their characteristic thermoresponse was demonstrated.
Collapse
Affiliation(s)
- Shuang Wang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Chonggao Liu
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Heng Zhou
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Chengqiang Gao
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Wangqing Zhang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071
- China
| |
Collapse
|
18
|
Bhavsar C, Momin M, Gharat S, Omri A. Functionalized and graft copolymers of chitosan and its pharmaceutical applications. Expert Opin Drug Deliv 2016; 14:1189-1204. [DOI: 10.1080/17425247.2017.1241230] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Chintan Bhavsar
- Department of Pharmaceutics, Dr. Bhanuben Nanavati College of Pharmacy, University of Mumbai, Mumbai, India
| | - Munira Momin
- Department of Pharmaceutics, Dr. Bhanuben Nanavati College of Pharmacy, University of Mumbai, Mumbai, India
| | - Sankalp Gharat
- Department of Pharmaceutics, Dr. Bhanuben Nanavati College of Pharmacy, University of Mumbai, Mumbai, India
| | - Abdelwahab Omri
- The Novel Drug & Vaccine Delivery Systems Facility, Department of Chemistry and Biochemistry, Laurentian University, Sudbury, Canada
| |
Collapse
|
19
|
Zhan S, Liu N, Wang W, Chen S, Wang J. Preparation and characterization of chitosan-graft-poly(L-lactic acid) microparticles. POLYM ENG SCI 2016. [DOI: 10.1002/pen.24389] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Shiping Zhan
- College of Environmental and Chemical Engineering, Dalian University; Dalian China
- Chemical and Environmental Protection Engineering Research Technology Center of Liaoning Province; Dalian China
| | - Nan Liu
- College of Environmental and Chemical Engineering, Dalian University; Dalian China
- Chemical and Environmental Protection Engineering Research Technology Center of Liaoning Province; Dalian China
| | - Weijing Wang
- College of Environmental and Chemical Engineering, Dalian University; Dalian China
- Chemical and Environmental Protection Engineering Research Technology Center of Liaoning Province; Dalian China
| | - Shuhua Chen
- College of Environmental and Chemical Engineering, Dalian University; Dalian China
- Chemical and Environmental Protection Engineering Research Technology Center of Liaoning Province; Dalian China
| | - Jingchang Wang
- College of Environmental and Chemical Engineering, Dalian University; Dalian China
- Chemical and Environmental Protection Engineering Research Technology Center of Liaoning Province; Dalian China
| |
Collapse
|
20
|
Seidi F, Zarei A. ATRP grafting of poly(N,N-dimethylamino-2-ethyl methacrylate) onto the fatty-acid-modified agarose backbone via the “grafting-from” technique. STARCH-STARKE 2016. [DOI: 10.1002/star.201500352] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Farzad Seidi
- Department of Chemistry, Sanandaj Branch; Islamic Azad University; Sanandaj Iran
| | - Armin Zarei
- Young Researchers and Elite Club, Sanandaj Branch; Islamic Azad university; Sanandaj Iran
| |
Collapse
|
21
|
Boyer C, Corrigan NA, Jung K, Nguyen D, Nguyen TK, Adnan NNM, Oliver S, Shanmugam S, Yeow J. Copper-Mediated Living Radical Polymerization (Atom Transfer Radical Polymerization and Copper(0) Mediated Polymerization): From Fundamentals to Bioapplications. Chem Rev 2015; 116:1803-949. [DOI: 10.1021/acs.chemrev.5b00396] [Citation(s) in RCA: 356] [Impact Index Per Article: 39.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Cyrille Boyer
- Australian Centre for Nanomedicine, and ‡Centre for Advanced
Macromolecular
Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney 2052, Australia
| | - Nathaniel Alan Corrigan
- Australian Centre for Nanomedicine, and ‡Centre for Advanced
Macromolecular
Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney 2052, Australia
| | - Kenward Jung
- Australian Centre for Nanomedicine, and ‡Centre for Advanced
Macromolecular
Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney 2052, Australia
| | - Diep Nguyen
- Australian Centre for Nanomedicine, and ‡Centre for Advanced
Macromolecular
Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney 2052, Australia
| | - Thuy-Khanh Nguyen
- Australian Centre for Nanomedicine, and ‡Centre for Advanced
Macromolecular
Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney 2052, Australia
| | - Nik Nik M. Adnan
- Australian Centre for Nanomedicine, and ‡Centre for Advanced
Macromolecular
Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney 2052, Australia
| | - Susan Oliver
- Australian Centre for Nanomedicine, and ‡Centre for Advanced
Macromolecular
Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney 2052, Australia
| | - Sivaprakash Shanmugam
- Australian Centre for Nanomedicine, and ‡Centre for Advanced
Macromolecular
Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney 2052, Australia
| | - Jonathan Yeow
- Australian Centre for Nanomedicine, and ‡Centre for Advanced
Macromolecular
Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney 2052, Australia
| |
Collapse
|
22
|
Zhang X, Zhang Z, Su X, Dong H, Zhong Z, Zhuo R. Synthesis of Amphiphilic Comb-Shape Copolymers Via Ring-Opening Polymerization of a Macromonomer. MACROMOL CHEM PHYS 2015. [DOI: 10.1002/macp.201500161] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xiaojin Zhang
- Key Laboratory of Biomedical Polymers of Ministry of Education, Department of Chemistry; Wuhan University; Wuhan 430072 P.R. China
| | - Zhenguo Zhang
- Key Laboratory of Biomedical Polymers of Ministry of Education, Department of Chemistry; Wuhan University; Wuhan 430072 P.R. China
| | - Xin Su
- Key Laboratory of Biomedical Polymers of Ministry of Education, Department of Chemistry; Wuhan University; Wuhan 430072 P.R. China
| | - Hui Dong
- Key Laboratory of Biomedical Polymers of Ministry of Education, Department of Chemistry; Wuhan University; Wuhan 430072 P.R. China
| | - Zhenlin Zhong
- Key Laboratory of Biomedical Polymers of Ministry of Education, Department of Chemistry; Wuhan University; Wuhan 430072 P.R. China
| | - Renxi Zhuo
- Key Laboratory of Biomedical Polymers of Ministry of Education, Department of Chemistry; Wuhan University; Wuhan 430072 P.R. China
| |
Collapse
|
23
|
García-Valdez O, George S, Champagne-Hartley R, Saldívar-Guerra E, Champagne P, Cunningham MF. Chitosan modification via nitroxide-mediated polymerization and grafting to approach in homogeneous media. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.04.043] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
24
|
García-Valdez O, Champagne-Hartley R, Saldívar-Guerra E, Champagne P, Cunningham MF. Modification of chitosan with polystyrene and poly(n-butyl acrylate) via nitroxide-mediated polymerization and grafting from approach in homogeneous media. Polym Chem 2015. [DOI: 10.1039/c5py00028a] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nitroxide-mediated polymerization was used to graft modify solubilized chitosan, allowing the reaction to be performed homogeneously.
Collapse
Affiliation(s)
- O. García-Valdez
- Department of Chemical Engineering
- Queen's University
- Kingston
- Canada K7L 3N6
- Polymerization Processes Department
| | | | - E. Saldívar-Guerra
- Polymerization Processes Department
- Centro de Investigación en Química Aplicada (CIQA) Blvd
- Saltillo
- México
| | - P. Champagne
- Department of Chemical Engineering
- Queen's University
- Kingston
- Canada K7L 3N6
- Department of Civil Engineering
| | - M. F. Cunningham
- Department of Chemical Engineering
- Queen's University
- Kingston
- Canada K7L 3N6
| |
Collapse
|
25
|
Grafting of Chitosan with Styrene and Maleic Anhydride via Nitroxide-Mediated Radical Polymerization in Supercritical Carbon Dioxide. MACROMOL CHEM PHYS 2013. [DOI: 10.1002/macp.201300014] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
26
|
Zhang L, Feng Y, Tian H, Zhao M, Khan M, Guo J. Amphiphilic depsipeptide-based block copolymers as nanocarriers for controlled release of ibuprofen with doxorubicin. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26713] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Li Zhang
- School of Chemical Engineering and Technology; Tianjin University; Weijin Road 92 Tianjin 300072 People's Republic of China
| | - Yakai Feng
- School of Chemical Engineering and Technology; Tianjin University; Weijin Road 92 Tianjin 300072 People's Republic of China
- Tianjin University-Helmholtz-Zentrum Geesthacht; Joint Laboratory for Biomaterials and Regenerative Medicine; Weijin Road 92 Tianjin 300072 People's Republic of China
- Key Laboratory of Systems Bioengineering, Ministry of Education; Tianjin University; Weijin Road 92 Tianjin 300072 People's Republic of China
| | - Hong Tian
- School of Chemical Engineering and Technology; Tianjin University; Weijin Road 92 Tianjin 300072 People's Republic of China
| | - Miao Zhao
- School of Chemical Engineering and Technology; Tianjin University; Weijin Road 92 Tianjin 300072 People's Republic of China
| | - Musammir Khan
- School of Chemical Engineering and Technology; Tianjin University; Weijin Road 92 Tianjin 300072 People's Republic of China
| | - Jintang Guo
- School of Chemical Engineering and Technology; Tianjin University; Weijin Road 92 Tianjin 300072 People's Republic of China
- Tianjin University-Helmholtz-Zentrum Geesthacht; Joint Laboratory for Biomaterials and Regenerative Medicine; Weijin Road 92 Tianjin 300072 People's Republic of China
| |
Collapse
|
27
|
Lefay C, Guillaneuf Y, Moreira G, Thevarajah JJ, Castignolles P, Ziarelli F, Bloch E, Major M, Charles L, Gaborieau M, Bertin D, Gigmes D. Heterogeneous modification of chitosan via nitroxide-mediated polymerization. Polym Chem 2013. [DOI: 10.1039/c2py20544k] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
28
|
He W, Jiang H, Zhang L, Cheng Z, Zhu X. Atom transfer radical polymerization of hydrophilic monomers and its applications. Polym Chem 2013. [DOI: 10.1039/c3py00122a] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
29
|
Tizzotti M, Charlot A, Fleury E, Stenzel M, Bernard J. Modification of polysaccharides through controlled/living radical polymerization grafting-towards the generation of high performance hybrids. Macromol Rapid Commun 2012; 31:1751-72. [PMID: 21567591 DOI: 10.1002/marc.201000072] [Citation(s) in RCA: 128] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
This review covers the literature concerning the modification of polysaccharides through controlled radical polymerizations (NMP, ATRP and RAFT). The different routes to well-defined polysaccharide-based macromolecules (block and graft copolymers) and graft-functionalized polysaccharide surfaces as well as the applications of these polysaccharide-based hybrids are extensively discussed.
Collapse
Affiliation(s)
- Morgan Tizzotti
- Université de Lyon, F-69361, Lyon, France; CNRS, UMR 5223, Ingénierie des Matériaux Polymères, F-69621, Villeurbanne, France; INSA Lyon, F-69621, Villeurbanne, France
| | | | | | | | | |
Collapse
|
30
|
Anderson-Wile AM, Coates GW, Auriemma F, De Rosa C, Silvestre A. Synthesis and Ring-Opening Metathesis Polymerization of Norbornene-Terminated Syndiotactic Polypropylene. Macromolecules 2012. [DOI: 10.1021/ma301073s] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Amelia M. Anderson-Wile
- Department of Chemistry
and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York, 14853-1301
| | - Geoffrey W. Coates
- Department of Chemistry
and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York, 14853-1301
| | - Finizia Auriemma
- Dipartimento
di Chimica “Paolo Corradini”, Università di Napoli “Federico II”, Complesso di
Monte S. Angelo, via Cintia, I-80126 Napoli, Italy
| | - Claudio De Rosa
- Dipartimento
di Chimica “Paolo Corradini”, Università di Napoli “Federico II”, Complesso di
Monte S. Angelo, via Cintia, I-80126 Napoli, Italy
| | - Amelia Silvestre
- Dipartimento
di Chimica “Paolo Corradini”, Università di Napoli “Federico II”, Complesso di
Monte S. Angelo, via Cintia, I-80126 Napoli, Italy
| |
Collapse
|
31
|
BAO HONGQIAN, PAN YONGZHENG, LI LIN. RECENT ADVANCES IN GRAPHENE-BASED NANOMATERIALS FOR BIOMEDICAL APPLICATIONS. ACTA ACUST UNITED AC 2012. [DOI: 10.1142/s179398441100030x] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Graphene, a two-dimensional nanomaterial reported for the first time in 2004, has been widely investigated for its novel physicochemical properties and potential applications. This review selectively summarizes the recent progress in using graphene-based nanomaterials for various biomedical applications. In particular, graphene-based sensors and biosensors, which are classified according to different sensing mechanisms and targets, are thoroughly discussed. Next, the utilization of graphene as nanocarriers for drug delivery, gene delivery and nanomedicine are demonstrated for potential cancer therapies. Finally, other graphene-based matrices, nanoscaffolds, and composites, which are used in bioapplications, are presented, followed by conclusions and perspective.
Collapse
Affiliation(s)
- HONGQIAN BAO
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
| | - YONGZHENG PAN
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
| | - LIN LI
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
| |
Collapse
|
32
|
Huang X, Xiao Y, Lang M. Self-assembly of pH-sensitive mixed micelles based on linear and star copolymers for drug delivery. J Colloid Interface Sci 2011; 364:92-9. [DOI: 10.1016/j.jcis.2011.08.028] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Revised: 08/07/2011] [Accepted: 08/11/2011] [Indexed: 10/17/2022]
|
33
|
|
34
|
Ma L, Geng H, Song J, Li J, Chen G, Li Q. Hierarchical self-assembly of polyhedral oligomeric silsesquioxane end-capped stimuli-responsive polymer: from single micelle to complex micelle. J Phys Chem B 2011; 115:10586-91. [PMID: 21830755 DOI: 10.1021/jp203782g] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Responsive polymeric micelles have been widely studied because of their potential use in nanocontainers and nanocarriers. In this study, polyhedral oligomeric silsesquioxane (POSS) end-capped poly[2-(dimethylamino)ethyl methacrylate] (POSS-PDMAEMA), a stimuli-responsive organic-inorganic hybrid polymer, was synthesized via atom transfer radical polymerization (ATRP) using POSS-Br as a macroinitiator. The self-assembly behaviors of POSS-PDMAEMA in aqueous solution were studied by fluorescence probe, transmission electron microscopy (TEM), dynamic light scattering (DLS), high-resolution transmission electron microscopy (HRTEM), and X-ray diffraction (XRD). The results revealed two self-assembly processes of POSS-PDMAEMA. First they self-assembled into a single micelle with the POSS molecules forming a crystal core and the PDMAEMA chains stretching as a corona. Then the single micelles, as building blocks, were able to reversibly form a hierarchical micelle-on-micelle structure (complex micelle) under external stimuli.
Collapse
Affiliation(s)
- Li Ma
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | | | | | | | | | | |
Collapse
|
35
|
Bao H, Pan Y, Ping Y, Sahoo NG, Wu T, Li L, Li J, Gan LH. Chitosan-functionalized graphene oxide as a nanocarrier for drug and gene delivery. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2011; 7:1569-78. [PMID: 21538871 DOI: 10.1002/smll.201100191] [Citation(s) in RCA: 554] [Impact Index Per Article: 42.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2011] [Revised: 03/14/2011] [Indexed: 05/20/2023]
Abstract
The covalent functionalization of graphene oxide (GO) with chitosan (CS) is successfully accomplished via a facile amidation process. The CS-grafted GO (GO-CS) sheets consist of about 64 wt.% CS, which imparts them with a good aqueous solubility and biocompatibility. Additionally, the physicochemical properties of GO-CS are studied. As a novel nanocarrier, GO-CS is applied to load a water-insoluble anticancer drug, camptothecin (CPT), via π-π stacking and hydrophobic interactions. It is demonstrated that GO-CS possesses a superior loading capacity for CPT, and the GO-CS-CPT complexes show remarkably high cytotoxicity in HepG2 and HeLa cell lines compared to the pure drug. At the same time, GO-CS is also able to condense plasmid DNA into stable, nanosized complexes, and the resulting GO-CS/pDNA nanoparticles exhibit reasonable transfection efficiency in HeLa cells at certain nitrogen/phosphate ratios. Therefore, the GO-CS nanocarrier is able to load and deliver both anticancer drugs and genes.
Collapse
Affiliation(s)
- Hongqian Bao
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore
| | | | | | | | | | | | | | | |
Collapse
|
36
|
Synthesis and drug release properties of novel pH- and temperature-sensitive copolymers based on a hyperbranched polyether core. Colloid Polym Sci 2010. [DOI: 10.1007/s00396-010-2314-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
37
|
Jiang J, Shu Q, Chen X, Yang Y, Yi C, Song X, Liu X, Chen M. Photoinduced morphology switching of polymer nanoaggregates in aqueous solution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:14247-14254. [PMID: 20704343 DOI: 10.1021/la102771h] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A novel photosensitive C-PNIPAAm comprising hydrophilic PNIPAAm conjugated with a relatively short but very hydrophobic coumarin part was designed and prepared using a coumarin-containing disulfide derivative (C-S-S-C) as transfer agent in the presence of Bu(3)P and water. It was found that C-PNIPAAm can form polymer micelles in aqueous solution. And the micellar morphology in aqueous solution can be photoswitched into hollow spheres according to the photodimerization of coumarin end groups upon 365 nm irradiation and reform the micellar morphology after the subsequent photoscission of dimers upon 254 nm. This instant morphology changing phenomenon was successfully monitored by dynamic light scattering (DLS) and transmission electron microscopy (TEM) measurements. TEM observations showed the small spherical shape of micelles with diameter at 30-50 nm before photo-cross-linking, the big vesicles with diameter at 200-350 nm after photo-cross-linking, and the small micelles with diameter at 30-50 nm after the subsequent photo-de-cross-linking in the first irradiation cycle. The reason for this significant morphology switching can be attributed to the reversible photoinduced amphiphilic structure transformation between the telechelic "hydrophobic end-hydrophilic chain" structure and the ABA type of "hydrophilic chain-hydrophobic center-hydrophilic chain" one upon alternating irradiation.
Collapse
Affiliation(s)
- Jinqiang Jiang
- School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu, China 214122.
| | | | | | | | | | | | | | | |
Collapse
|
38
|
Bao H, Li L, Leong WC, Gan LH. Thermo-Responsive Association of Chitosan-graft-Poly(N-isopropylacrylamide) in Aqueous Solutions. J Phys Chem B 2010; 114:10666-73. [DOI: 10.1021/jp105041z] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hongqian Bao
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, and Natural Sciences and Science Education, National Institute of Education, Nanyang Technological University, 1 Nanyang Walk, Singapore 637616
| | - Lin Li
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, and Natural Sciences and Science Education, National Institute of Education, Nanyang Technological University, 1 Nanyang Walk, Singapore 637616
| | - Wai Chong Leong
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, and Natural Sciences and Science Education, National Institute of Education, Nanyang Technological University, 1 Nanyang Walk, Singapore 637616
| | - Leong Huat Gan
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, and Natural Sciences and Science Education, National Institute of Education, Nanyang Technological University, 1 Nanyang Walk, Singapore 637616
| |
Collapse
|
39
|
Bao H, Li L, Gan LH, Ping Y, Li J, Ravi P. Thermo- and pH-Responsive Association Behavior of Dual Hydrophilic Graft Chitosan Terpolymer Synthesized via ATRP and Click Chemistry. Macromolecules 2010. [DOI: 10.1021/ma100894p] [Citation(s) in RCA: 118] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hongqian Bao
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
| | - Lin Li
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
| | - Leong Huat Gan
- Natural Sciences and Science Education, National Institute of Education, Nanyang Technological University, 1 Nanyang Walk, Singapore 637616
| | - Yuan Ping
- Division of Bioengineering, Faculty of Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574
| | - Jun Li
- Division of Bioengineering, Faculty of Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574
| | - Palaniswamy Ravi
- Innovation Centre, 3M Asia Pacific Pte. Ltd., 100 Woodlands Avenue 7, Singapore 738205
| |
Collapse
|