1
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Mei M, Bai B, Zheng D, Wang Q, Zhang Q. Application of the photothermal-responsive gelatin-based microspheres for controlled release of imidacloprid by helix-coil structural transition mechanism. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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2
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Rezvan G, Esmaeili M, Sadati M, Taheri-Qazvini N. Hybrid colloidal gels with tunable elasticity formed by charge-driven assembly between spherical soft nanoparticles and discotic nanosilicates. J Colloid Interface Sci 2022; 627:40-52. [PMID: 35841707 DOI: 10.1016/j.jcis.2022.07.039] [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: 04/27/2022] [Revised: 06/23/2022] [Accepted: 07/06/2022] [Indexed: 10/17/2022]
Abstract
Colloidal gels based on electrostatic interparticle attractions hold unexploited potential for tailoring their microstructure and properties. Here, we demonstrate that hetero-aggregation between oppositely charged particles with different geometries is a viable strategy for controlling their properties. Specifically, we studied hybrid colloidal gels prepared by the charge-driven assembly of oppositely charged spherical gelatin nanoparticles and two-dimensional (2D) nanosilicates. We show that the asymmetry between the building blocks and the resulting anisotropic interparticle interactions produces a variety of nanostructures and hybrid colloidal gels that exhibit high elasticity at low colloidal volume fractions. Tuning the competition between different attractive interactions in the system by varying the spatial charge heterogeneity on the 2D nanosheets, composition, and ionic strength was found to alter the mechanism of gel formation and their rheological properties. Remarkably, increasing the mass ratio of 2D nanosheets to spherical nanoparticles at a constant total mass fraction affords hybrid gels that exhibit an inverse relationship between elasticity and volume fraction. However, these hybrid gels are easily fluidized and exhibit rapid structural recovery once the stress is removed. These features allow for the engineering of versatile 3D-printable hybrid colloidal gels, whose structure and viscoelastic response are governed by parameters that have not been explored before.
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Affiliation(s)
- Gelareh Rezvan
- Department of Chemical Engineering, University of South Carolina, Columbia, SC 29208, United States.
| | - Mohsen Esmaeili
- Department of Chemical Engineering, University of South Carolina, Columbia, SC 29208, United States.
| | - Monirosadat Sadati
- Department of Chemical Engineering, University of South Carolina, Columbia, SC 29208, United States.
| | - Nader Taheri-Qazvini
- Department of Chemical Engineering, University of South Carolina, Columbia, SC 29208, United States; Biomedical Engineering Program, University of South Carolina, Columbia, SC 29208, United States.
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3
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Joshy KS, Augustine R, Hasan A, Ali Zahid A, Alex SM, Dalvi YB, Mraiche F, Thomas S, Kalarikkal N, Chi H. Cisplatin encapsulated nanoparticles from polymer blends for anti-cancer drug delivery. NEW J CHEM 2022. [DOI: 10.1039/d1nj04311k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Synthesis of cubic nanostructure for cisplatin encapsulation.
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Affiliation(s)
- K. S. Joshy
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, 2713, Doha, Qatar
- Biomedical Research Center (BRC), Qatar University, PO Box 2713, Doha, Qatar
| | - Robin Augustine
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, 2713, Doha, Qatar
- Biomedical Research Center (BRC), Qatar University, PO Box 2713, Doha, Qatar
| | - Anwarul Hasan
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, 2713, Doha, Qatar
- Biomedical Research Center (BRC), Qatar University, PO Box 2713, Doha, Qatar
| | - Alap Ali Zahid
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, 2713, Doha, Qatar
- Biomedical Research Center (BRC), Qatar University, PO Box 2713, Doha, Qatar
| | | | - Yogesh B. Dalvi
- Pushpagiri Research Centre, Pushpagiri Institute of Medical Sciences, Tiruvalla, Kerala 689 101, India
| | | | - Sabu Thomas
- International and Inter University Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam – 686 560, Kerala, India
| | - Nandakumar Kalarikkal
- School of Pure and Applied Physics, Mahatma Gandhi University, Kottayam – 686 560, Kerala, India
| | - Hong Chi
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
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4
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Synthesis of polypyrrole-modified gelatin/poly (acrylic acid) semi-interpenetrating network hydrogel and its controlled release of agrochemicals based on helix–coil transition of gelatin. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02651-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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5
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Xing J, Dang W, Li J, Huang J. Photo/thermal response of polypyrrole-modified calcium alginate/gelatin microspheres based on helix-coil structural transition and the controlled release of agrochemicals. Colloids Surf B Biointerfaces 2021; 204:111776. [PMID: 33930732 DOI: 10.1016/j.colsurfb.2021.111776] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 04/15/2021] [Accepted: 04/16/2021] [Indexed: 02/04/2023]
Abstract
Responsive controlled-release systems can not only improve the efficiency of agrochemical utilization but also increase crop yield and reduce environmental pollution caused by excessive use of agrochemicals. In this paper, the helix-coil structural transition of gelatin was adopted to construct a novel stimuli-responsive controlled-release system called polypyrrole/Ca-alginate/gelatin (PPy/Ca-alginate/Gel). In PPy/Ca-alginate/Gel, Ca-alginate and gelatin form a semi-interpenetrating network in which uncross-linked gelatin can undergo a free helix-coil structural transition due to the photothermal effect of PPy. The structural transition of gelatin will lead to changes in the functional groups and microstructure of semi-interpenetrating hydrogels and furthermore achieve the release of template agrochemical molecules embedded in hydrogels. By using carbendazim as a template molecule, the photothermal conversion and controlled release of PPy/Ca-alginate/Gel were systematically studied. After 600 s of light irradiation, its temperature could be increased by 17 ℃. The release of carbendazim in microspheres reached 91.8 % after 8 h of light irradiation, while it was only 13.3 % in the dark. The results indicated that PPy/Ca-alginate/Gel have excellent controlled-release and sustained-release properties and broad application potential in agriculture.
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Affiliation(s)
- Jianyu Xing
- School of Water and Environment, Chang'an University, Xi'an, Shaanxi, 710054, PR China; Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, Xi'an, 710054, PR China.
| | - Wenwen Dang
- School of Water and Environment, Chang'an University, Xi'an, Shaanxi, 710054, PR China; Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, Xi'an, 710054, PR China
| | - Jingchang Li
- School of Water and Environment, Chang'an University, Xi'an, Shaanxi, 710054, PR China; Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, Xi'an, 710054, PR China
| | - Jumei Huang
- School of Water and Environment, Chang'an University, Xi'an, Shaanxi, 710054, PR China; Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, Xi'an, 710054, PR China
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6
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Ghaeini-Hesaroeiye S, Razmi Bagtash H, Boddohi S, Vasheghani-Farahani E, Jabbari E. Thermoresponsive Nanogels Based on Different Polymeric Moieties for Biomedical Applications. Gels 2020; 6:E20. [PMID: 32635573 PMCID: PMC7559285 DOI: 10.3390/gels6030020] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/21/2020] [Accepted: 06/25/2020] [Indexed: 12/16/2022] Open
Abstract
Nanogels, or nanostructured hydrogels, are one of the most interesting materials in biomedical engineering. Nanogels are widely used in medical applications, such as in cancer therapy, targeted delivery of proteins, genes and DNAs, and scaffolds in tissue regeneration. One salient feature of nanogels is their tunable responsiveness to external stimuli. In this review, thermosensitive nanogels are discussed, with a focus on moieties in their chemical structure which are responsible for thermosensitivity. These thermosensitive moieties can be classified into four groups, namely, polymers bearing amide groups, ether groups, vinyl ether groups and hydrophilic polymers bearing hydrophobic groups. These novel thermoresponsive nanogels provide effective drug delivery systems and tissue regeneration constructs for treating patients in many clinical applications, such as targeted, sustained and controlled release.
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Affiliation(s)
- Sobhan Ghaeini-Hesaroeiye
- Biomedical Engineering Department, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran 14115, Iran; (S.G.-H.); (H.R.B.)
| | - Hossein Razmi Bagtash
- Biomedical Engineering Department, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran 14115, Iran; (S.G.-H.); (H.R.B.)
| | - Soheil Boddohi
- Biomedical Engineering Department, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran 14115, Iran; (S.G.-H.); (H.R.B.)
| | - Ebrahim Vasheghani-Farahani
- Biomedical Engineering Department, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran 14115, Iran; (S.G.-H.); (H.R.B.)
| | - Esmaiel Jabbari
- Biomimetic Materials and Tissue Engineering Laboratory, Department of Chemical Engineering, University of South Carolina, Columbia, SC 29208, USA;
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7
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Bioprintable tough hydrogels for tissue engineering applications. Adv Colloid Interface Sci 2020; 281:102163. [PMID: 32388202 DOI: 10.1016/j.cis.2020.102163] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 03/31/2020] [Accepted: 04/17/2020] [Indexed: 02/07/2023]
Abstract
Bioprinting is an advanced fabrication approach to engineer complex living structures as the conventional fabrication methods are incapable of integrating structural and biological complexities. It offers the versatility of printing different cell incorporated hydrogels (bioink) layer by layer; offering control over spatial resolution and cell distribution to mimic native tissue architectures. However, the bioprinting of tough hydrogels involve additional complexities, such as employing complex crosslinking or reinforcing mechanisms during printing and pre/post printing cellular activities. Solving this complexity requires attention from engineering, material science and cell biology perspectives. In this review, we discuss different types of bioprinting techniques with focus on current state-of-the-art in bioink formulations and pivotal characteristics of bioinks for tough hydrogel printing. We discuss the scope of transition from 3D to 4D bioprinting and some of the advanced characterization techniques for in-depth understanding of the 3D printing process from the microstructural perspective, along with few specific applications and conclude with the future perspectives in biofabrication of hydrogels for tissue engineering applications.
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8
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Das SS, Bharadwaj P, Bilal M, Barani M, Rahdar A, Taboada P, Bungau S, Kyzas GZ. Stimuli-Responsive Polymeric Nanocarriers for Drug Delivery, Imaging, and Theragnosis. Polymers (Basel) 2020; 12:E1397. [PMID: 32580366 PMCID: PMC7362228 DOI: 10.3390/polym12061397] [Citation(s) in RCA: 206] [Impact Index Per Article: 51.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 06/05/2020] [Accepted: 06/16/2020] [Indexed: 12/12/2022] Open
Abstract
In the past few decades, polymeric nanocarriers have been recognized as promising tools and have gained attention from researchers for their potential to efficiently deliver bioactive compounds, including drugs, proteins, genes, nucleic acids, etc., in pharmaceutical and biomedical applications. Remarkably, these polymeric nanocarriers could be further modified as stimuli-responsive systems based on the mechanism of triggered release, i.e., response to a specific stimulus, either endogenous (pH, enzymes, temperature, redox values, hypoxia, glucose levels) or exogenous (light, magnetism, ultrasound, electrical pulses) for the effective biodistribution and controlled release of drugs or genes at specific sites. Various nanoparticles (NPs) have been functionalized and used as templates for imaging systems in the form of metallic NPs, dendrimers, polymeric NPs, quantum dots, and liposomes. The use of polymeric nanocarriers for imaging and to deliver active compounds has attracted considerable interest in various cancer therapy fields. So-called smart nanopolymer systems are built to respond to certain stimuli such as temperature, pH, light intensity and wavelength, and electrical, magnetic and ultrasonic fields. Many imaging techniques have been explored including optical imaging, magnetic resonance imaging (MRI), nuclear imaging, ultrasound, photoacoustic imaging (PAI), single photon emission computed tomography (SPECT), and positron emission tomography (PET). This review reports on the most recent developments in imaging methods by analyzing examples of smart nanopolymers that can be imaged using one or more imaging techniques. Unique features, including nontoxicity, water solubility, biocompatibility, and the presence of multiple functional groups, designate polymeric nanocues as attractive nanomedicine candidates. In this context, we summarize various classes of multifunctional, polymeric, nano-sized formulations such as liposomes, micelles, nanogels, and dendrimers.
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Affiliation(s)
- Sabya Sachi Das
- Department of Pharmaceutical Sciences and Technology, Birla Institute of Technology, Mesra, Ranchi, Jharkhand 835215, India;
| | - Priyanshu Bharadwaj
- UFR des Sciences de Santé, Université de Bourgogne Franche-Comté, 21000 Dijon, France;
| | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian 223003, China;
| | - Mahmood Barani
- Department of Chemistry, Shahid Bahonar University of Kerman, Kerman 76175-133, Iran;
| | - Abbas Rahdar
- Department of Physics, University of Zabol, Zabol 98613-35856, Iran
| | - Pablo Taboada
- Colloids and Polymers Physics Group, Condensed Matter Physics Area, Particle Physics Department Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain;
- Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Simona Bungau
- Department of Pharmacy, Faculty of Medicine and Pharmacy, University of Oradea, 410028 Oradea, Romania;
| | - George Z. Kyzas
- Department of Chemistry, International Hellenic University, 65404 Kavala, Greece
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9
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Chatterjee S, Chi-Leung Hui P. Review of Stimuli-Responsive Polymers in Drug Delivery and Textile Application. Molecules 2019; 24:E2547. [PMID: 31336916 PMCID: PMC6681499 DOI: 10.3390/molecules24142547] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 06/27/2019] [Accepted: 07/11/2019] [Indexed: 12/22/2022] Open
Abstract
This review describes some commercially available stimuli-responsive polymers of natural and synthetic origin, and their applications in drug delivery and textiles. The polymers of natural origin such as chitosan, cellulose, albumin, and gelatin are found to show both thermo-responsive and pH-responsive properties and these features of the biopolymers impart sensitivity to act differently under different temperatures and pH conditions. The stimuli-responsive characters of these natural polymers have been discussed in the review, and their respective applications in drug delivery and textile especially for textile-based transdermal therapy have been emphasized. Some practically important thermo-responsive polymers such as pluronic F127 (PF127) and poly(N-isopropylacrylamide) (pNIPAAm) of synthetic origin have been discussed in the review and they are of great importance commercially because of their in situ gel formation capacity. Some pH-responsive synthetic polymers have been discussed depending on their surface charge, and their drug delivery and textile applications have been discussed in this review. The selected stimuli-responsive polymers of synthetic origin are commercially available. Above all, the applications of bio-based or synthetic stimuli-responsive polymers in textile-based transdermal therapy are given special regard apart from their general drug delivery applications. A special insight has been given for stimuli-responsive hydrogel drug delivery systems for textile-based transdermal therapy, which is critical for the treatment of skin disease atopic dermatitis.
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Affiliation(s)
- Sudipta Chatterjee
- Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Hong Kong
| | - Patrick Chi-Leung Hui
- Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Hong Kong.
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10
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Dual-functional gelatin-capped silver nanoparticles for antibacterial and antiangiogenic treatment of bacterial keratitis. J Colloid Interface Sci 2019; 536:112-126. [DOI: 10.1016/j.jcis.2018.10.041] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 10/15/2018] [Accepted: 10/16/2018] [Indexed: 02/08/2023]
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11
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Effect of salt on the coil-helix transition of gelatin at early stages: Optical rotation, rheology and DSC studies. Int J Biol Macromol 2018; 107:1074-1079. [DOI: 10.1016/j.ijbiomac.2017.09.079] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 09/19/2017] [Accepted: 09/20/2017] [Indexed: 11/18/2022]
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12
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13
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Matsukuma D, Sambai T, Otsuka H. UCST-type phase transition driven by protein-derived polypeptide employing gelatin and chitosan. POLYM ADVAN TECHNOL 2017. [DOI: 10.1002/pat.4033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Daisuke Matsukuma
- Department of Applied Chemistry, Faculty of Science Division I; Tokyo University of Science; 1-3 Kagurazaka, Shinjuku-ku Tokyo 162-8601 Japan
| | - Taketomo Sambai
- Department of Chemical Sciences and Technology, Graduate School of Chemical Science and Technology; Tokyo University of Science; 1-3 Kagurazaka, Shinjuku-ku Tokyo 162-8601 Japan
| | - Hidenori Otsuka
- Department of Applied Chemistry, Faculty of Science Division I; Tokyo University of Science; 1-3 Kagurazaka, Shinjuku-ku Tokyo 162-8601 Japan
- Department of Chemical Sciences and Technology, Graduate School of Chemical Science and Technology; Tokyo University of Science; 1-3 Kagurazaka, Shinjuku-ku Tokyo 162-8601 Japan
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14
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Structural studies on aqueous gelatin solutions: Implications in designing a thermo-responsive nanoparticulate formulation. Int J Biol Macromol 2017; 95:1126-1134. [DOI: 10.1016/j.ijbiomac.2016.10.103] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 10/29/2016] [Accepted: 10/31/2016] [Indexed: 01/22/2023]
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15
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Kim YJ, Matsunaga YT. Thermo-responsive polymers and their application as smart biomaterials. J Mater Chem B 2017; 5:4307-4321. [DOI: 10.1039/c7tb00157f] [Citation(s) in RCA: 324] [Impact Index Per Article: 46.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
This review summarises smart thermo-responsive polymeric materials with reversible and ‘on–off’ remotely switchable properties for a wide range of biomedical and biomaterials applications.
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Affiliation(s)
- Young-Jin Kim
- Center for International Research on Integrative Biomedical Systems (CIBiS)
- The University of Tokyo
- Tokyo 153-8505
- Japan
- Bioengineering Laboratory
| | - Yukiko T. Matsunaga
- Center for International Research on Integrative Biomedical Systems (CIBiS)
- The University of Tokyo
- Tokyo 153-8505
- Japan
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16
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Gandhi SS, Kim MS, Hwang JY, Chien LC. Electro-optical Memory of a Nanoengineered Amorphous Blue-Phase-III Polymer Scaffold. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:8998-9005. [PMID: 27554290 DOI: 10.1002/adma.201603226] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 07/13/2016] [Indexed: 06/06/2023]
Abstract
An electro-optical (EO) memory device is presented, which is based on a 3D nanostructured polymer scaffold of the amorphous blue phase III (BPIII) of cholesteric liquid crystals (LCs), which can impart optical isotropy, optical activity, and sub-millisecond EO response of BPIII to conventional nematic LCs. This functional scaffold also enables the first experimental observation of the long debated structure of BPIII.
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Affiliation(s)
- Sahil Sandesh Gandhi
- Chemical Physics Interdisciplinary Program and Liquid Crystal Institute, Kent State University, 1425 Lefton Esplanade, Kent, OH, 44242, USA.
| | - Min Su Kim
- Chemical Physics Interdisciplinary Program and Liquid Crystal Institute, Kent State University, 1425 Lefton Esplanade, Kent, OH, 44242, USA
| | - Jeoung-Yeon Hwang
- Chemical Physics Interdisciplinary Program and Liquid Crystal Institute, Kent State University, 1425 Lefton Esplanade, Kent, OH, 44242, USA
| | - Liang-Chy Chien
- Chemical Physics Interdisciplinary Program and Liquid Crystal Institute, Kent State University, 1425 Lefton Esplanade, Kent, OH, 44242, USA.
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17
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Dispenza C, Spadaro G, Jonsson M. Radiation Engineering of Multifunctional Nanogels. Top Curr Chem (Cham) 2016; 374:69. [PMID: 27645331 DOI: 10.1007/s41061-016-0071-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 08/30/2016] [Indexed: 01/18/2023]
Abstract
Nanogels combine the favourable properties of hydrogels with those of colloids. They can be soft and conformable, stimuli-responsive and highly permeable, and can expose a large surface with functional groups for conjugation to small and large molecules, and even macromolecules. They are among the very few systems that can be generated and used as aqueous dispersions. Nanogels are emerging materials for targeted drug delivery and bio-imaging, but they have also shown potential for water purification and in catalysis. The possibility of manufacturing nanogels with a simple process and at relatively low cost is a key criterion for their continued development and successful application. This paper highlights the most important structural features of nanogels related to their distinctive properties, and briefly presents the most common manufacturing strategies. It then focuses on synthetic approaches that are based on the irradiation of dilute aqueous polymer solutions using high-energy photons or electron beams. The reactions constituting the basis for nanogel formation and the approaches for controlling particle size and functionality are discussed in the context of a qualitative analysis of the kinetics of the various reactions.
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Affiliation(s)
- C Dispenza
- Dipartimento di Ingegneria Chimica, Gestionale, Informatica, Meccanica, Università degli Studi di Palermo, Viale delle Scienze, Edificio 6, 90128, Palermo, Italy. .,School of Chemical Science and Engineering, Royal Institute of Technology (KTH), 100 44, Stockholm, Sweden.
| | - G Spadaro
- Dipartimento di Ingegneria Chimica, Gestionale, Informatica, Meccanica, Università degli Studi di Palermo, Viale delle Scienze, Edificio 6, 90128, Palermo, Italy
| | - M Jonsson
- School of Chemical Science and Engineering, Royal Institute of Technology (KTH), 100 44, Stockholm, Sweden
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18
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Steyaert I, Rahier H, Van Vlierberghe S, Olijve J, De Clerck K. Gelatin nanofibers: Analysis of triple helix dissociation temperature and cold-water-solubility. Food Hydrocoll 2016. [DOI: 10.1016/j.foodhyd.2016.01.016] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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19
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Abstract
Gelation of the left helical N-substituted homopolypeptide poly(L-proline) (PLP) in water was explored, employing rheological and small-angle scattering studies at different temperatures and concentrations in order to investigate the network structure and its mechanical properties. Stiff gels were obtained at 10 wt % or higher at 5 °C, the first time gelation has been observed for homopolypeptides. The secondary structure and helical rigidity of PLP has large structural similarities to gelatin but as gels the two materials show contrasting trends with temperature. With increasing temperature in D2O, the network stiffens, with broad scattering features of similar correlation length for all concentrations and molar masses of PLP. A thermoresponsive transition was also achieved between 5 and 35 °C, with moduli at 35 °C higher than gelatin at 5 °C. The brittle gels could tolerate strains of 1% before yielding with a frequency-independent modulus over the observed range, similar to natural proline-rich proteins, suggesting the potential for thermoresponsive or biomaterial-based applications.
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Affiliation(s)
- Manos Gkikas
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Reginald K. Avery
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Bradley D. Olsen
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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20
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Poly(vinyl phosphonic acid) nanogels with tailored properties and their use for biomedical and environmental applications. Eur Polym J 2016. [DOI: 10.1016/j.eurpolymj.2016.01.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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21
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Matai I, Gopinath P. Chemically Cross-Linked Hybrid Nanogels of Alginate and PAMAM Dendrimers as Efficient Anticancer Drug Delivery Vehicles. ACS Biomater Sci Eng 2016; 2:213-223. [DOI: 10.1021/acsbiomaterials.5b00392] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Ishita Matai
- Nanobiotechnology Laboratory, Centre
for Nanotechnology, and ‡Department of
Biotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
| | - P. Gopinath
- Nanobiotechnology Laboratory, Centre
for Nanotechnology, and ‡Department of
Biotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
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22
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Biodegradable colloidal microgels with tunable thermosensitive volume phase transitions for controllable drug delivery. J Colloid Interface Sci 2015; 450:26-33. [DOI: 10.1016/j.jcis.2015.02.068] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 02/26/2015] [Accepted: 02/26/2015] [Indexed: 11/19/2022]
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23
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da Silva MA, Bode F, Grillo I, Dreiss CA. Exploring the Kinetics of Gelation and Final Architecture of Enzymatically Cross-Linked Chitosan/Gelatin Gels. Biomacromolecules 2015; 16:1401-9. [DOI: 10.1021/acs.biomac.5b00205] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Marcelo A. da Silva
- King’s
College London, Institute of Pharmaceutical Science, 150 Stamford Street, London, SE1 9NH, United Kingdom
| | - Franziska Bode
- King’s
College London, Institute of Pharmaceutical Science, 150 Stamford Street, London, SE1 9NH, United Kingdom
| | - Isabelle Grillo
- LSS Group,
Institut
Laue-Langevin, 6 rue Jules Horowitz
BP 156, F-38042 Grenoble, Cedex 9, France
| | - Cécile A. Dreiss
- King’s
College London, Institute of Pharmaceutical Science, 150 Stamford Street, London, SE1 9NH, United Kingdom
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Ma K, Xu Y, An Z. Templateless synthesis of polyacrylamide-based Nanogels via RAFT dispersion polymerization. Macromol Rapid Commun 2015; 36:566-70. [PMID: 25684634 DOI: 10.1002/marc.201400730] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 01/22/2015] [Indexed: 11/08/2022]
Abstract
This paper reports on the synthesis of well-defined polyacrylamide-based nanogels via reversible addition-fragmentation chain transfer (RAFT) dispersion polymerization, highlighting a templateless route for the efficient synthesis of nanogels based on water-soluble polymers. RAFT dispersion polymerization of acrylamide in co-nonsolvents of water-tert-butanol mixtures by chain extension from poly(dimethylacrylamide) shows well-controlled polymerization process, uniform nanogel size, and excellent colloidal stability. The versatility of this approach is further demonstrated by introducing a hydrophobic co-monomer (butyl acrylate) without disturbing the dispersion polymerization process.
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Affiliation(s)
- Kai Ma
- Institute of Nanochemistry and Nanobiology, College of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China; Department of Chemistry, Shanghai University, Shanghai, 200444, China
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