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Henschel C, Schanzenbach D, Laschewsky A, Ko CH, Papadakis CM, Müller-Buschbaum P. Thermoresponsive and co-nonsolvency behavior of poly(N-vinyl isobutyramide) and poly(N-isopropyl methacrylamide) as poly(N-isopropyl acrylamide) analogs in aqueous media. Colloid Polym Sci 2023. [DOI: 10.1007/s00396-023-05083-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
Abstract
Sets of the nonionic polymers poly(N-vinyl isobutyramide) (pNVIBAm) and poly(N-isopropyl methacrylamide) (pNIPMAm) are synthesized by radical polymerization covering the molar mass range from about 20,000 to 150,000 kg mol−1, and their thermoresponsive and solvent-responsive behaviors in aqueous solution are studied. Both polymers feature a lower critical solution temperature (LCST) apparently of the rare so-called type II, as characteristic for their well-studied analogue poly(N-isopropyl acrylamide) (pNIPAm). Moreover, in analogy to pNIPAm, both polymers exhibit co-nonsolvency behavior in mixtures of water with several co-solvents, including short-chain alcohols as well as a range of polar aprotic solvents. While the cloud points of the aqueous solutions are a few degrees higher than those for pNIPAm and increase in the order pNIPAm < pNVIBAm < pNIPMAm, the co-nonsolvency behavior becomes less pronounced in the order pNIPAm > pNVIBAm > pNIPMAm. Exceptionally, pNIPMAm does not show co-nonsolvency in mixtures of water and N,N-dimethylformamide.
Graphical Abstract
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2
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Schlattmann D, Schönhoff M. Interplay of the Influence of Crosslinker Content and Model Drugs on the Phase Transition of Thermoresponsive PNiPAM-BIS Microgels. Gels 2022; 8:gels8090571. [PMID: 36135283 PMCID: PMC9498534 DOI: 10.3390/gels8090571] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 09/02/2022] [Accepted: 09/05/2022] [Indexed: 11/16/2022] Open
Abstract
The phase transition behavior of differently crosslinked poly(N-isopropylacrylamide)/N,N’-methylenebisacrylamide (PNiPAM/BIS) microgels with varying crosslinker content is investigated in presence of aromatic additives. The influence of meta-hydroxybenzaldehyde (m-HBA) and 2,4-dihydroxybenzaldehyde (2,4-DHBA), chosen as model drugs, on the volume phase transition temperature (VPTT) is analyzed by dynamic light scattering (DLS), differential scanning calorimetry (DSC), and 1H-NMR, monitoring and comparing the structural, calorimetric, and dynamic phase transition, respectively. Generally, the VPTT is found to increase with crosslinker content, accompanied by a drastic decrease of transition enthalpy. The presence of an additive generally decreases the VPTT, but with distinct differences concerning the crosslinker content. While the structural transition is most affected at lowest crosslinker content, the calorimetric and dynamic transitions are most affected for an intermediate crosslinker content. Additive uptake of the collapsed gel is largest for low crosslinked microgels and in case of large additive-induced temperature shifts. Furthermore, as temperature is successively raised, 1H NMR data, aided by spin relaxation rates, reveal an interesting uptake behavior, as the microgels act in a sponge-like fashion including a large initial uptake and a squeeze-out phase above VPTT.
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Liu H, Prachyathipsakul T, Koyasseril-Yehiya TM, Le SP, Thayumanavan S. Molecular bases for temperature sensitivity in supramolecular assemblies and their applications as thermoresponsive soft materials. MATERIALS HORIZONS 2022; 9:164-193. [PMID: 34549764 PMCID: PMC8757657 DOI: 10.1039/d1mh01091c] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Thermoresponsive supramolecular assemblies have been extensively explored in diverse formats, from injectable hydrogels to nanoscale carriers, for a variety of applications including drug delivery, tissue engineering and thermo-controlled catalysis. Understanding the molecular bases behind thermal sensitivity of materials is fundamentally important for the rational design of assemblies with optimal combination of properties and predictable tunability for specific applications. In this review, we summarize the recent advances in this area with a specific focus on the parameters and factors that influence thermoresponsive properties of soft materials. We summarize and analyze the effects of structures and architectures of molecules, hydrophilic and lipophilic balance, concentration, components and external additives upon the thermoresponsiveness of the corresponding molecular assemblies.
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Affiliation(s)
- Hongxu Liu
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA.
| | | | | | - Stephanie P Le
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA.
| | - S Thayumanavan
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA.
- Department of Biomedical Engineering, University of Massachusetts, Amherst, Massachusetts 01003, USA
- Molecular and Cellular Biology Program, University of Massachusetts, Amherst, Massachusetts 01003, USA
- Centre for Bioactive Delivery, Institute for Applied Life Science, University of Massachusetts, Amherst, Massachusetts 01003, USA
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4
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Kim T, Lee J, Lee B, Park J, Song S, Kim BK, Kim SY. Determination of the hydrogenation state of benzene by the thermally induced phase separation of Poly(ethersulfone). POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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5
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Wang X, Qiu H, Wu Q, Xie J, Zhou S, Wu W. Salt-Enhanced CO 2-Responsiveness of Microgels. ACS Macro Lett 2020; 9:1611-1616. [PMID: 35617062 DOI: 10.1021/acsmacrolett.0c00617] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Here, we report a distinct mechanism for harnessing CO2-responsiveness through enhancing CO2 capture ability. The finding is demonstrated on the microgels that are composed of oligo(ethylene glycol) and sulfonate moieties. Laser light scattering studies on dilute aqueous dispersion of these microgels indicated a low CO2-responsivity, which can be significantly enhanced by adding NaCl and other salts. This salt-enhanced CO2-responsiveness of microgels can be elucidated by the antipolyelectrolyte behavior and its superposition of forming cross-links physically with CO2 as an intermediate. Further results of the filtration experiments on microgel translocation through pores suggest the feasibility of the explanation. The finding is also supported by the CO2 capture-release experiments on the dispersion, which can reversibly absorb and desorb CO2.
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Affiliation(s)
- Xiaofei Wang
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, The Key Laboratory for Chemical Biology of Fujian Province, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Huijuan Qiu
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, The Key Laboratory for Chemical Biology of Fujian Province, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Qingshi Wu
- College of Chemical Engineering and Materials Science, Quanzhou Normal University, Quanzhou, Fujian 362000, China
| | - Jianda Xie
- School of Materials Science and Engineering, Xiamen University of Technology, Xiamen, Fujian 361024, China
| | - Shiming Zhou
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Weitai Wu
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, The Key Laboratory for Chemical Biology of Fujian Province, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
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7
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Segiet D, Jerusalem R, Katzenberg F, Tiller JC. Investigation of the swelling behavior of hydrogels derived from high‐molecular‐weight poly(2‐ethyl‐2‐oxazoline). JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20190267] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Dominik Segiet
- Biomaterials and Polymer Science, Department of Biochemical and Chemical Engineering Dortmund Germany
| | - Robert Jerusalem
- Biomaterials and Polymer Science, Department of Biochemical and Chemical Engineering Dortmund Germany
| | - Frank Katzenberg
- Biomaterials and Polymer Science, Department of Biochemical and Chemical Engineering Dortmund Germany
| | - Joerg C. Tiller
- Biomaterials and Polymer Science, Department of Biochemical and Chemical Engineering Dortmund Germany
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8
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Molecular Mechanisms of the Interactions of N-(2-Hydroxypropyl)methacrylamide Copolymers Designed for Cancer Therapy with Blood Plasma Proteins. Pharmaceutics 2020; 12:pharmaceutics12020106. [PMID: 32013056 PMCID: PMC7076460 DOI: 10.3390/pharmaceutics12020106] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 01/14/2020] [Accepted: 01/26/2020] [Indexed: 12/04/2022] Open
Abstract
The binding of plasma proteins to a drug carrier alters the circulation of nanoparticles (NPs) in the bloodstream, and, as a consequence, the anticancer efficiency of the entire nanoparticle drug delivery system. We investigate the possible interaction and the interaction mechanism of a polymeric drug delivery system based on N-(2-hydroxypropyl)methacrylamide (HPMA) copolymers (pHPMA) with the most abundant proteins in human blood plasma—namely, human serum albumin (HSA), immunoglobulin G (IgG), fibrinogen (Fbg), and apolipoprotein (Apo) E4 and A1—using a combination of small-angle X-ray scattering (SAXS), analytical ultracentrifugation (AUC), and nuclear magnetic resonance (NMR). Through rigorous investigation, we present evidence of weak interactions between proteins and polymeric nanomedicine. Such interactions do not result in the formation of the protein corona and do not affect the efficiency of the drug delivery.
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10
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Xu R, Tian J, Guan Y, Zhang Y. Extraordinarily Large LCST Depression Converts Nonthermosensitive Polymer to Thermosensitive. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b02121] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Rong Xu
- Key Laboratory of Functional Polymer Materials and State Key Laboratory of Medicinal Chemical Biology, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Jiafeng Tian
- Key Laboratory of Functional Polymer Materials and State Key Laboratory of Medicinal Chemical Biology, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Ying Guan
- Key Laboratory of Functional Polymer Materials and State Key Laboratory of Medicinal Chemical Biology, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yongjun Zhang
- Key Laboratory of Functional Polymer Materials and State Key Laboratory of Medicinal Chemical Biology, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
- Collaborative
Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China
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11
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Velychkivska N, Starovoytova L, Březina V, Hanyková L, Hill JP, Labuta J. Improving the Colloidal Stability of Temperature-Sensitive Poly( N-isopropylacrylamide) Solutions Using Low Molecular Weight Hydrophobic Additives. ACS OMEGA 2018; 3:11865-11873. [PMID: 31459272 PMCID: PMC6645090 DOI: 10.1021/acsomega.8b01811] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 09/11/2018] [Indexed: 06/10/2023]
Abstract
Poly(N-isopropylacrylamide) (PNIPAM) is an important polymer with stimuli-responsive properties, making it suitable for various uses. Phase behavior of the temperature-sensitive PNIPAM polymer in the presence of four low-molecular weight additives tert-butylamine (t-BuAM), tert-butyl alcohol (t-BuOH), tert-butyl methyl ether (t-BuME), and tert-butyl methyl ketone (t-BuMK) was studied in water (D2O) using high-resolution nuclear magnetic resonance (NMR) spectroscopy and dynamic light scattering. Phase separation was thermodynamically modeled as a two-state process which resulted in a simple curve which can be used for fitting of NMR data and obtaining all important thermodynamic parameters using simple formulas presented in this paper. The model is based on a modified van't Hoff equation. Phase separation temperatures T p and thermodynamic parameters (enthalpy and entropy change) connected with the phase separation of PNIPAM were obtained using this method. It was determined that T p is dependent on additives in the following order: T p(t-BuAM) > T p(t-BuOH) > T p(t-BuME) > T p(t-BuMK). Also, either increasing the additive concentration or increasing pK a of the additive leads to depression of T p. Time-resolved 1H NMR spin-spin relaxation experiments (T 2) performed above the phase separation temperature of PNIPAM revealed high colloidal stability of the phase-separated polymer induced by the additives (relative to the neat PNIPAM/D2O system). Small quantities of selected suitable additives can be used to optimize the properties of PNIPAM preparations including their phase separation temperatures, colloidal stabilities, and morphologies, thus improving the prospects for the application.
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Affiliation(s)
- Nadiia Velychkivska
- Department
of NMR Spectroscopy, Institute of Macromolecular
Chemistry AS CR, v.v.i., Heyrovsky Sq. 2, Prague 6 162 06, Czech Republic
| | - Larisa Starovoytova
- Department
of NMR Spectroscopy, Institute of Macromolecular
Chemistry AS CR, v.v.i., Heyrovsky Sq. 2, Prague 6 162 06, Czech Republic
| | - Václav Březina
- Faculty
of Mathematics and Physics, Department of Macromolecular Physics, Charles University, V Holešovičkách 2, 180 00 Prague 8, Czech Republic
| | - Lenka Hanyková
- Faculty
of Mathematics and Physics, Department of Macromolecular Physics, Charles University, V Holešovičkách 2, 180 00 Prague 8, Czech Republic
| | - Jonathan P. Hill
- National
Institute for Materials Science (NIMS), International Center for Materials
Nanoarchitectonics (WPI-MANA), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Jan Labuta
- National
Institute for Materials Science (NIMS), International Center for Materials
Nanoarchitectonics (WPI-MANA), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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12
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Grimm O, Schacher FH. Dual Stimuli-Responsive P(NIPAAm-co-SPA) Copolymers: Synthesis and Response in Solution and in Films. Polymers (Basel) 2018; 10:E645. [PMID: 30966679 PMCID: PMC6403943 DOI: 10.3390/polym10060645] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 05/28/2018] [Accepted: 06/04/2018] [Indexed: 12/23/2022] Open
Abstract
We present the synthesis and solution properties of dual stimuli-responsive poly(N-isopropylacrylamide-co-spiropyran acrylate) (P(NIPAAm-co-SPA)) copolymers of varying composition prepared via nitroxide-mediated copolymerization. The resulting copolymers feature molar masses from 40,000 to 100,000 g/mol according to static light scattering and an SPA content of up to 5.3%. The latter was determined by ¹H NMR spectroscopy and UV⁻Vis spectroscopy. These materials exhibit reversible response upon irradiation in polymeric films for a minimum of three cycles; their response in solution to both light and temperature was also investigated in an aqueous TRIS buffer (pH 8). Irradiation was carried out using LED setups with wavelengths of 365 and 590 nm. In aqueous solution, a custom-made setup using a fiber-coupled 200 W Hg(Xe) lamp with 340 and 540 nm filters was used and additional heating of the copolymer solutions during irradiation allowed to study influence of the presence of either the spiropyran or merocyanine form on the cloud point temperature. Hereby, it was found that increasing the SPA content leads to a more pronounced difference between both states and decreasing cloud points in general.
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Affiliation(s)
- Oliver Grimm
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich-Schiller-University Jena, Humboldtstraße 10, D-07743 Jena, Germany.
| | - Felix H Schacher
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich-Schiller-University Jena, Humboldtstraße 10, D-07743 Jena, Germany.
- Jena Center for Soft Matter (JCSM), Friedrich-Schiller-University Jena, Philosophenweg 7, D-07743 Jena, Germany.
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13
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Marques NDN, Balaban RDC, Halila S, Borsali R. Synthesis and characterization of carboxymethylcellulose grafted with thermoresponsive side chains of high LCST: The high temperature and high salinity self-assembly dependence. Carbohydr Polym 2018; 184:108-117. [DOI: 10.1016/j.carbpol.2017.12.053] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 12/06/2017] [Accepted: 12/19/2017] [Indexed: 12/30/2022]
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14
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Jadhav SA, Nisticò R, Magnacca G, Scalarone D. Packed hybrid silica nanoparticles as sorbents with thermo-switchable surface chemistry and pore size for fast extraction of environmental pollutants. RSC Adv 2018; 8:1246-1254. [PMID: 35540902 PMCID: PMC9076942 DOI: 10.1039/c7ra11869d] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 12/18/2017] [Indexed: 11/21/2022] Open
Abstract
Thermoresponsive poly(N-isopropylacrylamide)-grafted silica nanoparticles (SiNPs) have been synthesized and fully characterized by ATR-FTIR, TGA, HRTEM, BET and DLS analysis. Hybrid solid phase extraction (SPE) beds with tuneable pore size and switchable surface chemistry were prepared by packing the polymer-grafted nanoparticles inside SPE cartridges. The cartridges were tested by checking the thermo-regulated elution of model compounds, namely methylene blue, caffeine and amoxicillin. Extraction of the analytes and regeneration of the interaction sites on the sorbent surface was carried out entirely in water solution by changing the external temperature below and above the lower critical solution temperature (LCST) of the polymer. The results demonstrate that the elution of model compounds depends on the temperature-regulated size of the inter-particle voids and on the change of surface properties of the PNIPAM-grafted nanoparticles from hydrophilic to hydrophobic. Thermoresponsive poly(N-isopropylacrylamide)-grafted silica nanoparticles were synthesized and used to prepare solid phase extraction sorbents with switchable pore size and surface chemistry for temperature-regulated extraction of water pollutants.![]()
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Affiliation(s)
- Sushilkumar A. Jadhav
- Department of Chemistry and NIS Research Centre
- University of Torino
- 10125 Torino
- Italy
| | - Roberto Nisticò
- Department of Chemistry and NIS Research Centre
- University of Torino
- 10125 Torino
- Italy
| | - Giuliana Magnacca
- Department of Chemistry and NIS Research Centre
- University of Torino
- 10125 Torino
- Italy
| | - Dominique Scalarone
- Department of Chemistry and NIS Research Centre
- University of Torino
- 10125 Torino
- Italy
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15
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Tang Z, Guan Y, Zhang Y. The synthesis of a contraction-type glucose-sensitive microgel working at physiological temperature guided by a new glucose-sensing mechanism. Polym Chem 2018. [DOI: 10.1039/c8py00072g] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A new glucose-sensing mechanism was proposed, guided by which a contraction-type glucose-sensitive microgel working at physiological temperature was synthesized successfully.
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Affiliation(s)
- Zhuo Tang
- Key Laboratory of Functional Polymer Materials and State Key Laboratory of Medicinal Chemical Biology
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University. The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin
- Tianjin 300071
| | - Ying Guan
- Key Laboratory of Functional Polymer Materials and State Key Laboratory of Medicinal Chemical Biology
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University. The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin
- Tianjin 300071
| | - Yongjun Zhang
- Key Laboratory of Functional Polymer Materials and State Key Laboratory of Medicinal Chemical Biology
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University. The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin
- Tianjin 300071
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16
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Tang Z, Weng J, Guan Y, Zhang Y. Unexpected Large Depression of VPTT of a PNIPAM Microgel by Low Concentration of PVA. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201700364] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Zhuo Tang
- State Key Laboratory of Medicinal Chemical Biology and Key Laboratory of Functional Polymer Materials; Institute of Polymer Chemistry; College of Chemistry; Nankai University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300071 China
| | - Junying Weng
- State Key Laboratory of Medicinal Chemical Biology and Key Laboratory of Functional Polymer Materials; Institute of Polymer Chemistry; College of Chemistry; Nankai University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300071 China
| | - Ying Guan
- State Key Laboratory of Medicinal Chemical Biology and Key Laboratory of Functional Polymer Materials; Institute of Polymer Chemistry; College of Chemistry; Nankai University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300071 China
| | - Yongjun Zhang
- State Key Laboratory of Medicinal Chemical Biology and Key Laboratory of Functional Polymer Materials; Institute of Polymer Chemistry; College of Chemistry; Nankai University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300071 China
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17
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Termühlen F, Kuckling D, Schönhoff M. Isothermal Titration Calorimetry to Probe the Coil-to-Globule Transition of Thermoresponsive Polymers. J Phys Chem B 2017; 121:8611-8618. [DOI: 10.1021/acs.jpcb.7b07428] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Frank Termühlen
- Institute
of Physical Chemistry, University of Muenster, Corrensstr. 28/30, D-48149 Muenster, Germany
| | - Dirk Kuckling
- Chemistry
Department, University of Paderborn, Warburger Str. 100, D-33098 Paderborn, Germany
| | - Monika Schönhoff
- Institute
of Physical Chemistry, University of Muenster, Corrensstr. 28/30, D-48149 Muenster, Germany
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18
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Thermodynamic and kinetic analysis of phase separation of temperature-sensitive poly(vinyl methyl ether) in the presence of hydrophobic tert-butyl alcohol. Colloid Polym Sci 2017. [DOI: 10.1007/s00396-017-4100-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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19
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Chen J, Yan B, Wang X, Huang Q, Thundat T, Zeng H. Core cross-linked double hydrophilic block copolymer micelles based on multiple hydrogen-bonding interactions. Polym Chem 2017. [DOI: 10.1039/c7py00210f] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Facile preparation and characterization of core cross-linked micelles via strong multiple hydrogen bonds using well-defined thermo-responsive double hydrophilic block copolymers.
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Affiliation(s)
- Jingsi Chen
- Department of Chemical and Materials Engineering
- University of Alberta
- Edmonton
- Canada
| | - Bin Yan
- Department of Chemical and Materials Engineering
- University of Alberta
- Edmonton
- Canada
- College of Light Industry
| | - Xiaogang Wang
- Material Science & Engineering Science College
- Taiyuan University of Science and Technology
- Taiyuan 030024
- China
| | - Qingxue Huang
- Material Science & Engineering Science College
- Taiyuan University of Science and Technology
- Taiyuan 030024
- China
| | - Thomas Thundat
- Department of Chemical and Materials Engineering
- University of Alberta
- Edmonton
- Canada
| | - Hongbo Zeng
- Department of Chemical and Materials Engineering
- University of Alberta
- Edmonton
- Canada
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20
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Verma NK, Purohit MP, Equbal D, Dhiman N, Singh A, Kar AK, Shankar J, Tehlan S, Patnaik S. Targeted Smart pH and Thermoresponsive N,O-Carboxymethyl Chitosan Conjugated Nanogels for Enhanced Therapeutic Efficacy of Doxorubicin in MCF-7 Breast Cancer Cells. Bioconjug Chem 2016; 27:2605-2619. [PMID: 27643823 DOI: 10.1021/acs.bioconjchem.6b00366] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In cancer treatment, developing ideal anticancer drug delivery systems to target tumor microenvironment by circumventing various physiological barriers still remains a daunting challenge. Here, in our work, a series of pH- and temperature-responsive nanogels based on poly(N-isopropylacrylamide-co-1-propene-2-3-dicarboxylate-co-2-acrylamido-2-methyl-1-propanesulfonate [poly(NIPAAm-IA-AMPS)] cross-linked by ethylene glycol dimethacrylate (EGDMA) were synthesized by random copolymerization. The molar ratio between monomer-comonomers-cross-linker was varied to fine-tune the optimum responsiveness of the nanogels. These optimized nanogels were further coupled to N,O-carboxymethyl chitosan (NOCC) stoichiometrically using EDC-NHS coupling chemistry to enhance the swelling behavior at lower pH. Interestingly, these NOCC-g-nanogels, when dispersed in aqueous media under sonication, attain nanosize and retain their high water-retention capacity with conspicuous pH and temperature responsiveness (viz. nanogel shrinkage in size beyond 35 °C and swelled at acidic pH) in vitro, as reflected by dynamic light scattering data. Doxorubicin (DOX), a potent anticancer drug, was loaded into these nanogels using the physical entrapment method. These drug-loaded nanogels exhibited a slow and sustained DOX release profile at physiological temperature and cytosolic pH. Furthermore, confocal and TEM results demonstrate that these nanogels were swiftly internalized by MCF-7 cells, and cell viability data showed preferential heightened cytotoxicity toward cancer cells (MCF-7 and MDA-MB231) compared to the MCF10A cells (human breast epithelial cell). Furthermore, intracellular DNA damage and cell cycle arrest assays suggest a mitochondrial mediated apoptosis in MCF-7 cells. This study substantiates our NOCC-g-nanogel platform as an excellent modality for passive diffusive loading and targeted release of entrapped drug(s) at physiological conditions in a controlled way for the improved therapeutic efficacy of the drug in anticancer treatment.
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Affiliation(s)
- Neeraj K Verma
- Water Analysis Laboratory, Nanotherapeutics & Nanomaterial Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR) , Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India.,College of Dental Sciences, BBD University , Faizabad Road, Lucknow 226028, Uttar Pradesh, India
| | - Mahaveer P Purohit
- Water Analysis Laboratory, Nanotherapeutics & Nanomaterial Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR) , Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India.,Academy of Scientific and Innovative Research (AcSIR) , CSIR-IITR Campus, Lucknow 226001, Uttar Pradesh, India
| | - Danish Equbal
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute (CSIR-CDRI) , Jankipuram Extension, Sitapur Road, Lucknow 226031, Uttar Pradesh, India
| | - Nitesh Dhiman
- Water Analysis Laboratory, Nanotherapeutics & Nanomaterial Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR) , Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India.,Academy of Scientific and Innovative Research (AcSIR) , CSIR-IITR Campus, Lucknow 226001, Uttar Pradesh, India
| | - Amrita Singh
- Water Analysis Laboratory, Nanotherapeutics & Nanomaterial Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR) , Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
| | - Aditya K Kar
- Water Analysis Laboratory, Nanotherapeutics & Nanomaterial Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR) , Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India.,Academy of Scientific and Innovative Research (AcSIR) , CSIR-IITR Campus, Lucknow 226001, Uttar Pradesh, India
| | - Jai Shankar
- Water Analysis Laboratory, Nanotherapeutics & Nanomaterial Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR) , Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
| | - Sarita Tehlan
- Department of Chemistry, Motilal Nehru College, University of Delhi South Campus , Benito Juarez Road, South Campus, New Delhi 110021, Delhi, India
| | - Satyakam Patnaik
- Water Analysis Laboratory, Nanotherapeutics & Nanomaterial Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR) , Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India.,Academy of Scientific and Innovative Research (AcSIR) , CSIR-IITR Campus, Lucknow 226001, Uttar Pradesh, India
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21
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Mahalik JP, Sumpter BG, Kumar R. Vertical Phase Segregation Induced by Dipolar Interactions in Planar Polymer Brushes. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01138] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Jyoti P. Mahalik
- Computer
Science and Mathematics
Division and Center for Nanophase Materials
Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Bobby G. Sumpter
- Computer
Science and Mathematics
Division and Center for Nanophase Materials
Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Rajeev Kumar
- Computer
Science and Mathematics
Division and Center for Nanophase Materials
Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
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22
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Liu HJ, Xu YY, Chen Y. Influence of sodium dodecyl sulfate on the phase transition of thermoresponsive hyperbranched polymer in water. CHINESE JOURNAL OF POLYMER SCIENCE 2016. [DOI: 10.1007/s10118-016-1779-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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23
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Olejniczak MN, Piechocki K, Kozanecki M, Koynov K, Adamus A, Wach RA. The influence of selected NSAIDs on volume phase transition in poly(2-(2-methoxyethoxy)ethyl methacrylate) hydrogels. J Mater Chem B 2016; 4:1528-1534. [DOI: 10.1039/c5tb02217g] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydrogels exhibiting Volume Phase Transition (VPT) are considered as useful biomaterials for the preparation of various drug delivery systems.
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Affiliation(s)
| | - Krzysztof Piechocki
- Department of Molecular Physics
- Faculty of Chemistry
- Lodz University of Technology
- Lodz
- Poland
| | - Marcin Kozanecki
- Department of Molecular Physics
- Faculty of Chemistry
- Lodz University of Technology
- Lodz
- Poland
| | - Kaloian Koynov
- Max Planck Institute for Polymer Research
- D-55021 Mainz
- Germany
| | - Agnieszka Adamus
- Institute of Applied Radiation Chemistry
- Lodz University of Technology
- 93-590 Lodz
- Poland
| | - Radosław A. Wach
- Institute of Applied Radiation Chemistry
- Lodz University of Technology
- 93-590 Lodz
- Poland
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24
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Micciulla S, Michalowsky J, Schroer MA, Holm C, von Klitzing R, Smiatek J. Concentration dependent effects of urea binding to poly(N-isopropylacrylamide) brushes: a combined experimental and numerical study. Phys Chem Chem Phys 2016; 18:5324-35. [DOI: 10.1039/c5cp07544k] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The concentration-dependent binding of urea to PNIPAM influences the chain conformation as a result of the subtle interplay between hydration properties and urea repartition around the polymer surface.
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Affiliation(s)
- Samantha Micciulla
- Stranski-Laboratorium
- Institut für Chemie
- Technische Universität Berlin
- D-10623 Berlin
- Germany
| | - Julian Michalowsky
- Institut für Computerphysik
- Universität Stuttgart
- D-70569 Stuttgart
- Germany
| | - Martin A. Schroer
- Deutsches Elektronen-Synchrotron DESY
- D-22607 Hamburg
- Germany
- The Hamburg Centre for Ultrafast Imaging (CUI)
- D-22761 Hamburg
| | - Christian Holm
- Institut für Computerphysik
- Universität Stuttgart
- D-70569 Stuttgart
- Germany
| | - Regine von Klitzing
- Stranski-Laboratorium
- Institut für Chemie
- Technische Universität Berlin
- D-10623 Berlin
- Germany
| | - Jens Smiatek
- Institut für Computerphysik
- Universität Stuttgart
- D-70569 Stuttgart
- Germany
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25
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Etika KC, Liu L, Cox MA, Grunlan JC. Clay-mediated carbon nanotube dispersion in poly(N-Isopropylacrylamide). Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2015.09.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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26
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Wang J, Liu B, Ru G, Bai J, Feng J. Effect of Urea on Phase Transition of Poly(N-isopropylacrylamide) and Poly(N,N-diethylacrylamide) Hydrogels: A Clue for Urea-Induced Denaturation. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01949] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Jian Wang
- State
Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics,
National Center for Magnetic Resonance in Wuhan, Wuhan Institute of
Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, P. R. China
- University of
Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Biaolan Liu
- State
Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics,
National Center for Magnetic Resonance in Wuhan, Wuhan Institute of
Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, P. R. China
- University of
Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Geying Ru
- State
Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics,
National Center for Magnetic Resonance in Wuhan, Wuhan Institute of
Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, P. R. China
| | - Jia Bai
- State
Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics,
National Center for Magnetic Resonance in Wuhan, Wuhan Institute of
Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, P. R. China
- University of
Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Jiwen Feng
- State
Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics,
National Center for Magnetic Resonance in Wuhan, Wuhan Institute of
Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, P. R. China
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27
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Additive Effects on Phase Transition and Interactions in Poly(vinyl methyl ether) Solutions. Polymers (Basel) 2015. [DOI: 10.3390/polym7121533] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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28
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Costa MC, Silva SM, Antunes FE. Adjusting the low critical solution temperature of poly(N-isopropyl acrylamide) solutions by salts, ionic surfactants and solvents: A rheological study. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.02.008] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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29
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Chatterjee P, Dai A, Yu H, Jiang H, Dai LL. Thermal and mechanical properties of poly(N-isopropylacrylamide)-based hydrogels as a function of porosity and medium change. J Appl Polym Sci 2015. [DOI: 10.1002/app.42776] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Prithwish Chatterjee
- School for Engineering of Matter, Transport and Energy, Arizona State University; Tempe Arizona 85287
| | - Annie Dai
- Harvard College, Harvard University; Cambridge Massachusetts 02138
| | - Hongyu Yu
- School of Earth and Space Exploration; Arizona State University; Tempe Arizona 85287
- School of Electrical; Computer and Energy Engineering, Arizona State University; Tempe Arizona 85287
| | - Hanqing Jiang
- School for Engineering of Matter, Transport and Energy, Arizona State University; Tempe Arizona 85287
| | - Lenore L. Dai
- School for Engineering of Matter, Transport and Energy, Arizona State University; Tempe Arizona 85287
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30
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Jiang Y, Wu Y, Huo Y. Thermo-responsive hydrogels withN-isopropylacrylamide/acrylamide interpenetrating networks for controlled drug release. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2015; 26:917-30. [DOI: 10.1080/09205063.2015.1068532] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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31
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Interactions in aromatic probe molecule loaded poly(N-isopropylacrylamide) hydrogels and implications for drug delivery. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.03.043] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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32
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Marques NDN, Maia AMDS, Balaban RDC. Development of dual-sensitive smart polymers by grafting chitosan with poly ( N-isopropylacrylamide): an overview. POLIMEROS 2015. [DOI: 10.1590/0104-1428.1744] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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33
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Yuan Y, Liu HJ, Chen Y. Influence of hydrophilic dyes on the phase transition of a thermoresponsive hyperbranched polymer. RSC Adv 2015. [DOI: 10.1039/c5ra18687k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The influences of hydrophilic dyes on the phase transition behaviors of HPEI-IBAm in the neutral and charged state were different.
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Affiliation(s)
- Yuan Yuan
- Department of Chemistry
- School of Sciences
- Tianjin University
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300072
| | - Hua-Ji Liu
- Department of Chemistry
- School of Sciences
- Tianjin University
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300072
| | - Yu Chen
- Department of Chemistry
- School of Sciences
- Tianjin University
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300072
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34
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Wang M, Gao Y, Cao C, Chen K, Wen Y, Fang D, Li L, Guo X. Binary Solvent Colloids of Thermosensitive Poly(N-isopropylacrylamide) Microgel for Smart Windows. Ind Eng Chem Res 2014. [DOI: 10.1021/ie502828b] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Mi Wang
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
- Shanghai Institute of Ceramics, 1295 Dingxi Road, Shanghai 200050, China
| | - Yanfeng Gao
- Shanghai Institute of Ceramics, 1295 Dingxi Road, Shanghai 200050, China
- School
of Materials Science and Engineering, Shanghai University, 99 Shangda
Rd., Baoshan, Shanghai 200444, China
| | - Chuanxiang Cao
- Shanghai Institute of Ceramics, 1295 Dingxi Road, Shanghai 200050, China
| | - Kaimin Chen
- College
of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
| | - Yicun Wen
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Dingye Fang
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Li Li
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Xuhong Guo
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
- Key
Laboratory of Materials-Oriented Chemical Engineering of Xinjiang
Uygur Autonomous Region, Shihezi University, Xinjiang 832000, PR China
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35
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Suzue A, Honda H, Kadokura M, Tanaka S, Tukada H. Investigation of New Cooling Systems Based on Complexes of Temperature-Responsive Poly(N-isopropylacrylamide) with Porous Materials. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2014. [DOI: 10.1246/bcsj.20140187] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Atsushi Suzue
- Graduate School of Nanobioscience, Yokohama City University
| | - Hisashi Honda
- Graduate School of Nanobioscience, Yokohama City University
| | - Meiko Kadokura
- International College of Arts and Sciences, Yokohama City University
| | - Susumu Tanaka
- Department of Materials Science, Yonago National College of Technology
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36
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Mamaghani PY, Kaffashi B, Salehi R, Davaran S. Synthesis, Characterization, and Viscoelastic Behavior of Thermothickening Poly (N-Isopropylacrylamide-Methacrylicacide-Vinylpyrrolidone) Nanogels as an Injectable Biocompatible Drug Carrier. INT J POLYM MATER PO 2014. [DOI: 10.1080/00914037.2014.886236] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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37
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Thavanesan T, Herbert C, Plamper FA. Insight in the phase separation peculiarities of poly(dialkylaminoethyl methacrylate)s. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:5609-5619. [PMID: 24762295 DOI: 10.1021/la5007583] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The thermoresponsive and pH-sensitive behavior of poly(N,N-dimethylaminoethyl methacrylate) (PDMAEMA), poly(N,N-diethylaminoethyl methacrylate) (PDEAEMA), and poly(N,N-diisopropylaminoethyl methacrylate) (PDiPAEMA) is compared by use of different techniques. We employed temperature- and pH-dependent turbidimetry, fluorescence spectroscopy (of the polarity indicator 4-(dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran, 4HP, which is sometimes also abbreviated as DCM), and IR spectroscopy (of the carbonyl band). Within specific pH windows, all polymers showed phase separation at elevated temperatures (showing a lower critical solution temperature behavior, an LCST behavior). By increasing the hydrophobicity of the dialkylaminoethyl substituent, the phase separation is shifted to lower pH (at constant temperatures; pH(PDMAEMA) > pH(PDEAEMA) > pH(PDiPAEMA)) or to lower temperatures (at constant pH; T(PDMAEMA) > T(PDEAEMA) > T(PDiPAEMA)). While PDMAEMA does not exhibit pronounced changes in polarity upon phase separation (as seen by fluorescence spectroscopy), PDEAEMA and PDiPAEMA provide a nonpolar surrounding for the 4HP uptake above their collapse. In addition, PDiPAEMA causes the sharpest transition (as seen by the 4HP probe), although the carbonyl hydration experiences a more gradual (sigmoidal) transition for all polymers (as seen by IR). These observations allow a distinction of the phase separation mechanisms. While the LCST properties of PDMAEMA are mainly caused by backbone/carbonyl interactions, its rather polar dimethylaminoethyl group does not inflict pronounced hydrophobicity, but promotes a higher water content within the phase-separated polymer. In contrast, the phase separation of PDEAEMA and PDiPAEMA is mainly influenced by the less polar dialkylaminoethyl groups, leading to drastic changes in the hydrophobicity around the cloud points. Further, the IR data suggest that the diisopropylaminoethyl groups of PDiPAEMA tend to backfold to the carbonyl groups/backbone to minimize water-polymer contact already in its soluble state. Finally, this study might lead to advanced lasing applications of the laser dye 4HP.
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Affiliation(s)
- Thaanuskah Thavanesan
- Institute of Physical Chemistry, RWTH Aachen University , Landoltweg 2, 52056 Aachen, Germany
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38
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Ebeling B, Eggers S, Hendrich M, Nitschke A, Vana P. Flipping the Pressure- and Temperature-Dependent Cloud-Point Behavior in the Cononsolvency System of Poly(N-isopropylacrylamide) in Water and Ethanol. Macromolecules 2014. [DOI: 10.1021/ma5001139] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bastian Ebeling
- Institut
für Physikalische
Chemie, Georg-August-Universität, Tammannstr. 6, D-37077 Göttingen, Germany
| | - Steffen Eggers
- Institut
für Physikalische
Chemie, Georg-August-Universität, Tammannstr. 6, D-37077 Göttingen, Germany
| | - Michael Hendrich
- Institut
für Physikalische
Chemie, Georg-August-Universität, Tammannstr. 6, D-37077 Göttingen, Germany
| | - Annika Nitschke
- Institut
für Physikalische
Chemie, Georg-August-Universität, Tammannstr. 6, D-37077 Göttingen, Germany
| | - Philipp Vana
- Institut
für Physikalische
Chemie, Georg-August-Universität, Tammannstr. 6, D-37077 Göttingen, Germany
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39
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Li W, Wu P. On the thermodynamic phase behavior of poly(N-vinylcaprolactam) solution in the presence of different ionic liquids. Polym Chem 2014. [DOI: 10.1039/c3py01104f] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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40
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Schönhoff M. NMR studies of sorption and adsorption phenomena in colloidal systems. Curr Opin Colloid Interface Sci 2013. [DOI: 10.1016/j.cocis.2013.03.004] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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41
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Temperature-induced phase transition in hydrogels of interpenetrating networks poly(N-isopropylmethacrylamide)/poly(N-isopropylacrylamide). Colloid Polym Sci 2013. [DOI: 10.1007/s00396-013-2992-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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42
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Domján A, Manek E, Geissler E, László K. Host–Guest Interactions in Poly(N-isopropylacrylamide) Hydrogel Seen by One- and Two-Dimensional 1H CRAMPS Solid-State NMR Spectroscopy. Macromolecules 2013. [DOI: 10.1021/ma400295a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Attila Domján
- NMR Spectroscopy Laboratory,
Institute of Organic Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, P.O. Box 17, H-1525
Budapest, Pusztaszeri út 59-67, Hungary
| | - Enikő Manek
- Department of Physical Chemistry
and Materials Science, Budapest University of Technology and Economics, H-1521 Budapest, Hungary
| | - Erik Geissler
- Laboratoire Interdisciplinaire
de Physique CNRS UMR5588, Université J. Fourier de Grenoble, B.P.87, 38402 St Martin d’Hères
cedex, France
| | - Krisztina László
- Department of Physical Chemistry
and Materials Science, Budapest University of Technology and Economics, H-1521 Budapest, Hungary
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43
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Mu XR, Tong JG, Liu Y, Liu XY, Liu HJ, Chen Y. Influence of aliphatic acids on the phase transition of thermoresponsive hyperbranched polymer. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.03.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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44
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Elliott LCC, Jing B, Akgun B, Zhu Y, Bohn PW, Fullerton-Shirey SK. Loading and distribution of a model small molecule drug in poly(N-isopropylacrylamide) brushes: a neutron reflectometry and AFM study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:3259-3268. [PMID: 23441753 DOI: 10.1021/la305088k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The structure of a hydrated poly(N-isopropylacrylamide) brush loaded with 5 vol % Isoniazid is studied as a function of temperature using neutron reflectometry (NR) and atomic force microscopy (AFM). NR measurements show that Isoniazid increases the thickness of the brush before, during and after the polymer collapse, and it is retained inside the brush at all measured temperatures. The Isoniazid concentration in the expanded brush is ~14% higher than in the bulk solution, and the concentration nearly doubles in the collapsed polymer, suggesting stronger binding between Isoniazid and the polymer compared to water, even at temperatures below the lower critical solution temperature (LCST) where the polymer is hydrophilic. Typically, additives that bind strongly to the polymer backbone and increase the hydrophilicity of the polymer will delay the onset of the LCST, which is suggested by AFM and NR measurements. The extent of small-molecule loading and distribution throughout a thermo-responsive polymer brush, such as pNIPAAm, will have important consequences for applications such as drug delivery and gating.
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Affiliation(s)
- Lindsay C C Elliott
- Department of Chemistry and Biochemistry, Notre Dame Center for Nano Science and Technology, University of Notre Dame, Notre Dame, Indiana 46556, United States
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45
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Wang X, Li S, Su Y, Huo F, Zhang W. Aqueous RAFT polymerization ofN-isopropylacrylamide-mediated with hydrophilic macro-RAFT agent: Homogeneous or heterogeneous polymerization? ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26599] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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46
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Hofmann CH, Plamper FA, Scherzinger C, Hietala S, Richtering W. Cononsolvency Revisited: Solvent Entrapment by N-Isopropylacrylamide and N,N-Diethylacrylamide Microgels in Different Water/Methanol Mixtures. Macromolecules 2012. [DOI: 10.1021/ma302384v] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christian H. Hofmann
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D 52056 Aachen,
Germany
| | - Felix A. Plamper
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D 52056 Aachen,
Germany
| | - Christine Scherzinger
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D 52056 Aachen,
Germany
| | - Sami Hietala
- Laboratory of Polymer
Chemistry,
Department of Chemistry, University of Helsinki, PB 55, Helsinki, FIN 00014 Finland
| | - Walter Richtering
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D 52056 Aachen,
Germany
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47
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Strandman S, Le Dévédec F, Zhu XX. Self-Assembly of Bile Acid–PEG Conjugates in Aqueous Solutions. J Phys Chem B 2012; 117:252-8. [DOI: 10.1021/jp307989a] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Satu Strandman
- Department of Chemistry, Université de Montréal, CP 6128, Succursale Centre-ville,
Montreal, QC H3C 3J7, Canada
| | - Frantz Le Dévédec
- Department of Chemistry, Université de Montréal, CP 6128, Succursale Centre-ville,
Montreal, QC H3C 3J7, Canada
| | - X. X. Zhu
- Department of Chemistry, Université de Montréal, CP 6128, Succursale Centre-ville,
Montreal, QC H3C 3J7, Canada
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Jaber J, Mohsen E. Synthesis of Fe3O4@silica/poly(N-isopropylacrylamide) as a novel thermo-responsive system for controlled release of H3PMo12O40 nano drug in AC magnetic field. Colloids Surf B Biointerfaces 2012; 102:265-72. [PMID: 23010117 PMCID: PMC7127514 DOI: 10.1016/j.colsurfb.2012.08.024] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Revised: 08/14/2012] [Accepted: 08/16/2012] [Indexed: 12/25/2022]
Abstract
In this work, a new method is introduced for synthesis of nano drug for the first time. H3PMo12O40 and Fe3O4@SiO2/poly(N-isopropylacrylamide), were prepared as nano drug and magneto thermally responsive nano-carrier respectively. Then the released behavior of H3PMo12O40 nano-drug from this thermo-responsive carrier was investigated in an AC magnetic field. When a drug particle is broken up to nanometer range, the total surface area is increased; therefore the rate of dissolution and the rate of release are increased. The as-synthesized nanostructures were characterized by scanning electron microscopy (SEM), X-ray powder diffraction (XRD), transmission electron microscopy (TEM), vibrating sample magnetometer (VSM), and Fourier transform infrared spectroscopy (FT-IR). Furthermore, experimental condition which lead to the released profile of H3PMo12O40 nano-drug from Fe3O4@SiO2/poly(N-isopropylacrylamide), such as strength of magnetic field (H), temperature (T), particle size of drug and content of loaded drug were tested. Increasing the strength of magnetic field, temperature and content of loaded drug, the rate of drug release was also increased.
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Affiliation(s)
- Javidi Jaber
- Institute of Nano Science and Nano Technology, University of Kashan, Kashan, Iran.
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NMR and DSC study of temperature-induced phase transition in aqueous solutions of poly(N-isopropylmethacrylamide-co-acrylamide) copolymers. Colloid Polym Sci 2012. [DOI: 10.1007/s00396-012-2701-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Chou FY, Shih CM, Tsai MC, Chiu WY, Lue SJ. Functional acrylic acid as stabilizer for synthesis of smart hydrogel particles containing a magnetic Fe3O4 core. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.05.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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