1
|
Serkhacheva NS, Prokopov NI, Lysenko EA, Kozhunova EY, Chernikova EV. Modern Trends in Polymerization-Induced Self-Assembly. Polymers (Basel) 2024; 16:1408. [PMID: 38794601 PMCID: PMC11125046 DOI: 10.3390/polym16101408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2024] [Revised: 05/01/2024] [Accepted: 05/12/2024] [Indexed: 05/26/2024] Open
Abstract
Polymerization-induced self-assembly (PISA) is a powerful and versatile technique for producing colloidal dispersions of block copolymer particles with desired morphologies. Currently, PISA can be carried out in various media, over a wide range of temperatures, and using different mechanisms. This method enables the production of biodegradable objects and particles with various functionalities and stimuli sensitivity. Consequently, PISA offers a broad spectrum of potential commercial applications. The aim of this review is to provide an overview of the current state of rational synthesis of block copolymer particles with diverse morphologies using various PISA techniques and mechanisms. The discussion begins with an examination of the main thermodynamic, kinetic, and structural aspects of block copolymer micellization, followed by an exploration of the key principles of PISA in the formation of gradient and block copolymers. The review also delves into the main mechanisms of PISA implementation and the principles governing particle morphology. Finally, the potential future developments in PISA are considered.
Collapse
Affiliation(s)
- Natalia S. Serkhacheva
- Lomonosov Institute of Fine Chemical Technologies, MIREA—Russian Technological University, pr. Vernadskogo, 86, 119571 Moscow, Russia;
| | - Nickolay I. Prokopov
- Lomonosov Institute of Fine Chemical Technologies, MIREA—Russian Technological University, pr. Vernadskogo, 86, 119571 Moscow, Russia;
| | - Evgenii A. Lysenko
- Faculty of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1, bld. 3, 119991 Moscow, Russia; (E.A.L.); (E.Y.K.)
| | - Elena Yu. Kozhunova
- Faculty of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1, bld. 3, 119991 Moscow, Russia; (E.A.L.); (E.Y.K.)
- Faculty of Physics, Lomonosov Moscow State University, Leninskie Gory 1, bld. 2, 119991 Moscow, Russia
| | - Elena V. Chernikova
- Faculty of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1, bld. 3, 119991 Moscow, Russia; (E.A.L.); (E.Y.K.)
| |
Collapse
|
2
|
Sharma A, Singh M, Sharma V, Vashishth A, Raj M, Upadhyay SK, Singh S, Ramniwas S, Dhama K, Sharma AK, Bhatia SK. Current paradigms in employing self-assembled structures: Drug delivery implications with improved therapeutic potential. Colloids Surf B Biointerfaces 2024; 234:113745. [PMID: 38241890 DOI: 10.1016/j.colsurfb.2024.113745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 12/18/2023] [Accepted: 01/02/2024] [Indexed: 01/21/2024]
Abstract
Recent efforts have focused on developing improved drug delivery systems with enhanced therapeutic efficacy and minimal side effects. Micelles, self-assembled from amphiphilic block copolymers in aqueous solutions, have gained considerable attention for drug delivery. However, there is a need to further enhance their efficiency. These micelles offer benefits like biodegradability, biocompatibility, sustained drug release, and improved patient compliance. Yet, researchers must address stability issues and reduce toxicity. Nanoscale self-assembled structures have shown promise as efficient drug carriers, offering an alternative to conventional methods. Fine-tuning at the monomeric and molecular levels, along with structural modifications, is crucial for optimal drug release profiles. Various strategies, such as entrapping hydrophobic drugs and using polyethylene oxide diblock copolymer micelles to resist protein adsorption and cellular adhesion, protect the hydrophobic core from degradation. The polyethylene oxide corona also provides stealth properties, prolonging blood circulation for extended drug administration. Amphiphilic copolymers are attractive for drug delivery due to their adjustable properties, allowing control over micelle size and morphology. Emerging tools promise complex and multifunctional platforms. This article summarizes about the challenges as far as the use of micelles is concerned, including optimizing performance, rigorous pre-clinical and clinical research, and suggests further improvement for drug delivery efficacy.
Collapse
Affiliation(s)
- Ajay Sharma
- Department of Chemistry, Career Point University, Tikker - Kharwarian, Hamirpur, Himachal Pradesh 176041, India; Center for Nanoscience and Technology, Career Point University, Tikker - Kharwarian, Hamirpur, Himachal Pradesh, 176041, India.
| | - Manoj Singh
- Department of Bio-sciences and Technology, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, Haryana 133207, India.
| | - Varruchi Sharma
- Department of Biotechnology & Bioinformatics, Sri Guru Gobind Singh College, Chandigarh 160019, India.
| | - Amit Vashishth
- Department of Science and Humanities, SRM Institute of Science & Technology (Deemed to be University) Delhi-NCR Campus, Ghaziabad, UP 201204, India.
| | - Mayank Raj
- Department of Bio-sciences and Technology, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, Haryana 133207, India.
| | - Sushil K Upadhyay
- Department of Bio-sciences and Technology, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, Haryana 133207, India.
| | - Sandeep Singh
- Department of Chemistry, Sri Guru Gobind Singh College, Sector -26, Chandigarh, India.
| | - Seema Ramniwas
- University Centre for Research and Development, University Institute of Biotechnology Chandigarh University, Gharuan, Mohali, India.
| | - Kuldeep Dhama
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Izatnagar, UP, India.
| | - Anil K Sharma
- Department of Biotechnology, Amity University, Sector 82 A, IT City Rd, Block D, Sahibzada Ajit Singh Nagar, Punjab, 140306, India.
| | - Shashi Kant Bhatia
- Biotransformation and Biomaterials Lab, Department of Biological Engineering, College of Engineering, KonkukUniversity, Hwayang-dong Gwangjin-gu, Seoul 05029, South Korea.
| |
Collapse
|
3
|
Ghorbanizamani F, Moulahoum H, Zihnioglu F, Timur S. Self-assembled block copolymers in ionic liquids: Recent advances and practical applications. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.115076] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
4
|
|
5
|
Majdanski TC, Pretzel D, Czaplewska JA, Vitz J, Sungur P, Höppener S, Schubert S, Schacher FH, Schubert US, Gottschaldt M. Spherical and Worm-Like Micelles from Fructose-Functionalized Polyether Block Copolymers. Macromol Biosci 2018; 18:e1700396. [DOI: 10.1002/mabi.201700396] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 01/26/2018] [Indexed: 12/31/2022]
Affiliation(s)
- Tobias C. Majdanski
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstraße 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
| | - David Pretzel
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstraße 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
| | - Justyna A. Czaplewska
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstraße 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
| | - Jürgen Vitz
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstraße 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
| | - Pelin Sungur
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstraße 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
| | - Stephanie Höppener
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstraße 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
| | - Stephanie Schubert
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
- Institute of Pharmacy; Friedrich Schiller University Jena; Otto-Schott-Straße 41 07743 Jena Germany
| | - Felix H. Schacher
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstraße 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
| | - Ulrich S. Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstraße 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
| | - Michael Gottschaldt
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstraße 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
| |
Collapse
|
6
|
Mitsouras D, Lee TC, Liacouras P, Ionita CN, Pietilla T, Maier SE, Mulkern RV. Three-dimensional printing of MRI-visible phantoms and MR image-guided therapy simulation. Magn Reson Med 2016; 77:613-622. [PMID: 26864335 DOI: 10.1002/mrm.26136] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2015] [Revised: 12/23/2015] [Accepted: 01/05/2016] [Indexed: 12/27/2022]
Abstract
PURPOSE To demonstrate the use of anatomic MRI-visible three-dimensional (3D)-printed phantoms and to assess process accuracy and material MR signal properties. METHODS A cervical spine model was generated from computed tomography (CT) data and 3D-printed using an MR signal-generating material. Printed phantom accuracy and signal characteristics were assessed using 120 kVp CT and 3 Tesla (T) MR imaging. The MR relaxation rates and diffusion coefficient of the fabricated phantom were measured and 1 H spectra were acquired to provide insight into the nature of the proton signal. Finally, T2 -weighted imaging was performed during cryoablation of the model. RESULTS The printed model produced a CT signal of 102 ± 8 Hounsfield unit, and an MR signal roughly 1/3rd that of saline in short echo time/short repetition time GRE MRI (456 ± 36 versus 1526 ± 121 arbitrary signal units). Compared with the model designed from the in vivo CT scan, the printed model differed by 0.13 ± 0.11 mm in CT, and 0.62 ± 0.28 mm in MR. The printed material had T2 ∼32 ms, T2*∼7 ms, T1 ∼193 ms, and a very small diffusion coefficient less than olive oil. MRI monitoring of the cryoablation demonstrated iceball formation similar to an in vivo procedure. CONCLUSION Current 3D printing technology can be used to print anatomically accurate phantoms that can be imaged by both CT and MRI. Such models can be used to simulate MRI-guided interventions such as cryosurgeries. Future development of the proposed technique can potentially lead to printed models that depict different tissues and anatomical structures with different MR signal characteristics. Magn Reson Med 77:613-622, 2017. © 2016 International Society for Magnetic Resonance in Medicine.
Collapse
Affiliation(s)
- Dimitris Mitsouras
- Applied Imaging Science Lab, Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Thomas C Lee
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Peter Liacouras
- 3D Medical Applications Center, Department of Radiology, Walter Reed National Military Medical Center, Bethesda, Maryland, USA
| | - Ciprian N Ionita
- Department of Biomedical Engineering, State University of New York at Buffalo, Buffalo, New York, USA
| | | | - Stephan E Maier
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.,Department of Radiology, Sahlgrenska University Hospital, Gothenburg University, Gothenburg, Sweden
| | - Robert V Mulkern
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.,Department of Radiology, Children's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| |
Collapse
|
7
|
Self-Assembly of Amphiphilic Block Copolymers in Selective Solvents. FLUORESCENCE STUDIES OF POLYMER CONTAINING SYSTEMS 2016. [DOI: 10.1007/978-3-319-26788-3_2] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
8
|
Hiller W, Engelhardt N, Kampmann AL, Degen P, Weberskirch R. Micellization and Mobility of Amphiphilic Poly(2-oxazoline) Based Block Copolymers Characterized by 1H NMR Spectroscopy. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00149] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Wolf Hiller
- Faculty
of Chemistry and Chemical Biology, TU Dortmund, Otto-Hahn-Straße 6, D-44227 Dortmund, Germany
| | - Nadine Engelhardt
- Faculty
of Chemistry and Chemical Biology, TU Dortmund, Otto-Hahn-Straße 6, D-44227 Dortmund, Germany
| | - Anne-Larissa Kampmann
- Faculty
of Chemistry and Chemical Biology, TU Dortmund, Otto-Hahn-Straße 6, D-44227 Dortmund, Germany
| | - Patrick Degen
- Center
for Synchrotron Radiation (DELTA), TU Dortmund, Maria-Goeppert-Meyer-Str. 2, D-44227 Dortmund, Germany
| | - Ralf Weberskirch
- Faculty
of Chemistry and Chemical Biology, TU Dortmund, Otto-Hahn-Straße 6, D-44227 Dortmund, Germany
| |
Collapse
|
9
|
Kudina O, Kohut A, Tarnavchyk I, Hevus I, Voronov A. Solvent-responsive self-assembly of amphiphilic invertible polymers determined with SANS. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:3310-3318. [PMID: 24606021 DOI: 10.1021/la404939w] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Amphiphilic invertible polymers (AIPs) are a new class of macromolecules that self-assemble into micellar structures and rapidly change structure in response to changes in solvent polarity. Using small-angle neutron scattering (SANS) data, we obtained a quantitative description of the invertible micellar assemblies (IMAs). The detailed composition and size of the assemblies (including the effect of temperature) were measured in aqueous and toluene polymer solutions. The results show that the invertible macromolecules self-assemble into cylindrical core-shell micellar structures. The composition of the IMAs in aqueous and toluene solutions was used to reveal the inversion mechanism by changing the polarity of the medium. Our experiments demonstrate that AIP unimers self-assemble into IMAs in aqueous solution, predominantly through interactions between the hydrophobic moieties of macromolecules. The hydrophobic effect (or solvophobic interaction) is the major driving force for self-assembly. When the polarity of the environment is changed from polar to nonpolar, poly(ethylene glycol) (PEG) and aliphatic dicarboxylic acid fragments of AIP macromolecules tend to replace each other in the core and the shell of the IMAs. However, neither the interior nor the exterior of the IMAs consists of fragments of a single component of the macromolecule. In aqueous solution, with the temperature increasing from 15 to 35 °C, the IMAs' mixed core from aliphatic dicarboxylic acid and PEG moieties and PEG-based shell change the structure. As a result of the progressive dehydration of the macromolecules, the hydration level (water content) in the micellar core decreases at 25 °C, followed by dehydrated PEG fragments entering the interior of the IMAs when the temperature increases to 35 °C.
Collapse
Affiliation(s)
- Olena Kudina
- Department of Coatings and Polymeric Materials, North Dakota State University , Fargo, North Dakota 58108-6050 United States
| | | | | | | | | |
Collapse
|
10
|
Watanabe E, Boutis GS, Sato H, Sekine S, Asakura T. NMR Studies of Thermo-responsive Behavior of an Amphiphilic Poly(asparagine) Derivative in Water. POLYMER 2014; 55:278-286. [PMID: 25614708 PMCID: PMC4299659 DOI: 10.1016/j.polymer.2013.11.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The thermo-responsive behavior of a unique biocompatible polymer, poly(N-substituted α/β-asparagine) derivative (PAD), has been studied with several NMR methods. The 1H and 13C solution NMR measurements of the PAD in DMSO-d6 were used to investigate the isolated polymer and perform spectral assignments. By systematic addition of D2O we have tracked structural changes due to aggregation and observed contraction of hydrophilic side chains. Solution and cross polarization / magic angle spinning (CP/MAS) 13C NMR approaches were implemented to investigate the aggregates of the PAD aqueous solution during the liquid to gel transition as the temperature was increased. At temperatures near 20 °C, all of the peaks from the PAD were observed in the 13C CP/MAS and 13C solution NMR spectra, indicating the presence of polymer chain nodes. Increasing the temperature to 40 °C resulted in a partial disentanglement of the nodes due to thermal agitation and further heating resulted in little to no additional structural changes. Deuterium T1-T2 and T2-T2 two-dimensional relaxation spectroscopies using an inverse Laplace transform, were also implemented to monitor the water-PAD interaction during the phase transition. At temperatures near 20 °C the dynamical characteristics of water were manifested into one peak in the deuterium T1-T2 map. Increasing the temperature to 40 °C resulted in several distinguishable reservoirs of water with different dynamical characteristics. The observation of several reservoirs of water at the temperature of gel formation at 40 °C is consistent with a physical picture of a gel involving a network of interconnected polymer chains trapping a fluid. Further increase in temperature to 70 °C resulted in two non-exchanging water reservoirs probed by deuterium T2-T2 measurements.
Collapse
Affiliation(s)
- Eiji Watanabe
- Department of Biotechnology, Tokyo University of Agriculture and Technology, Koganei 184-8588, Japan
| | - Gregory S. Boutis
- Department of Physics, Brooklyn College of The City University of New York, Brooklyn, New York 11210, United States
| | - Hiroko Sato
- Mitsui Chemical Analysis & Consulting Service, Inc., Sodegaura, 299-0265, Japan
| | - Sokei Sekine
- Mitsui Chemical Analysis & Consulting Service, Inc., Sodegaura, 299-0265, Japan
| | - Tetsuo Asakura
- Department of Biotechnology, Tokyo University of Agriculture and Technology, Koganei 184-8588, Japan
| |
Collapse
|
11
|
Wyman IW, Liu G. Micellar structures of linear triblock terpolymers: Three blocks but many possibilities. POLYMER 2013. [DOI: 10.1016/j.polymer.2012.12.079] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
12
|
Haloi DJ, Ata S, Singha NK, Jehnichen D, Voit B. Acrylic AB and ABA block copolymers based on poly(2-ethylhexyl acrylate) (PEHA) and poly(methyl methacrylate) (PMMA) via ATRP. ACS APPLIED MATERIALS & INTERFACES 2012; 4:4200-4207. [PMID: 22834708 DOI: 10.1021/am300915j] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Acrylic block copolymers have several advantages over conventional styrenic block copolymers, because of the presence of a saturated backbone and polar pendant groups. This investigation reports the preparation and characterization of di- and triblock copolymers (AB and ABA types) of 2-ethylhexyl acrylate (EHA) and methyl methacrylate (MMA) via atom transfer radical polymerization (ATRP). A series of block copolymers, PEHA-block-PMMA(AB diblock) and PMMA-block-PEHA-block-PMMA(ABA triblock) were prepared via ATRP at 90 °C using CuBr as catalyst in combination with N,N,N',N″,N″-pentamethyl diethylenetriamine (PMDETA) as ligand and acetone as additive. The chemical structure of the macroinitiators and molar composition of block copolymers were characterized by (1)H NMR analysis, and molecular weights of the polymers were analyzed by GPC analysis. DSC analysis showed two glass transition temperatures (T(g)), indicating formation of two domains, which was corroborated by AFM analysis. Small-angle X-ray scattering (SAXS) analysis of AB and ABA block copolymers showed scattering behavior inside the measuring limits indicating nanophase separation. However, SAXS pattern of AB diblock copolymers indicated general phase separation only, whereas for ABA triblock copolymer an ordered or mixed morphology could be deduced, which is assumed to be the reason for the better mechanical properties achieved with ABA block copolymers than with the AB analogues.
Collapse
Affiliation(s)
- Dhruba J Haloi
- Rubber Technology Centre, Indian Institute of Technology Kharagpur, Kharagpur-721302, India
| | | | | | | | | |
Collapse
|
13
|
Kulthe SS, Choudhari YM, Inamdar NN, Mourya V. Polymeric micelles: authoritative aspects for drug delivery. Des Monomers Polym 2012. [DOI: 10.1080/1385772x.2012.688328] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Affiliation(s)
- Sushant S. Kulthe
- a Government College of Pharmacy , Aurangabad , 431005 , Maharashtra , India
| | - Yogesh M. Choudhari
- a Government College of Pharmacy , Aurangabad , 431005 , Maharashtra , India
| | - Nazma N. Inamdar
- a Government College of Pharmacy , Aurangabad , 431005 , Maharashtra , India
| | - Vishnukant Mourya
- a Government College of Pharmacy , Aurangabad , 431005 , Maharashtra , India
| |
Collapse
|
14
|
|
15
|
Neugebauer D, Bury K, Pendziałek K. High molecular weight diblock and ABA/ABC triblock copolymers of tert-butyl (meth)acrylate. POLYM INT 2012. [DOI: 10.1002/pi.4164] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
16
|
Cai G, Zhang H, Liu P, Wang L, Jiang H. Triggered disassembly of hierarchically assembled onion-like micelles into the pristine core-shell micelles via a small change in pH. Acta Biomater 2011; 7:3729-37. [PMID: 21742068 DOI: 10.1016/j.actbio.2011.06.027] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2011] [Revised: 06/21/2011] [Accepted: 06/21/2011] [Indexed: 12/20/2022]
Abstract
The size and surface property of nanomaterial-based delivery systems administered intravenously play important roles in their cell uptake and in vivo distribution. Both of them should be capable of self-evolution in order to achieve efficient targeting performance. A facile strategy was proposed to manipulate both the size and surface property of polymeric micelles. It was found that the hierarchical assembly between trimethylated chitosan-g-poly(ε-caprolactone) (TMC-PCL) micelles and carboxyethyl chitosan-g-poly(ethylene glycol) (CEC-PEG) could produce onion-like micelles with enlarged size and PEGylated surface. The onion-like micelles could withstand the ionic strength of plasma and competitive exchange with BSA, and abruptly disassemble into the pristine TMC-PCL micelles via a small change in pH. By varying the degree of carboxyethylation, the disassembly pH could be modulated to the range of the tumoral microclimate pH. In contrast with TMC-PCL micelles, which displayed high cytotoxicity and endocytic ability towards C6 glioma cells, the onion-like micelles were cell-friendly and internalized by the cells at a very low level. Doxorubicin was used as a model chemotherapeutic agent and incorporated within TMC-PCL micelles. Dox release from both TMC-PCL micelles and the onion-like micelles was very slow under normal physiological conditions and displayed excellent pH sensitivity. Cell viability of Dox-loaded micelles was also investigated.
Collapse
|
17
|
Jiang T, Wang L, Lin S, Lin J, Li Y. Structural evolution of multicompartment micelles self-assembled from linear ABC triblock copolymer in selective solvents. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:6440-6448. [PMID: 21506539 DOI: 10.1021/la201080z] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Using dissipative particle dynamics simulation, structural evolution from concentric multicompartment micelles to raspberry-like multicompartment micelles self-assembled from linear ABC triblock copolymers in selective solvents was investigated. The structural transformation from concentric micelles to raspberry-like micelles can be controlled by changing either the length of B blocks or the solubility of B block. It was found that the structures with B bumps on C surface (B-bump-C) are formed at shorter B block length and the structures with C bumps on B surface (C-bump-B) are formed at relative lower solubility of B blocks. The formation of B-bump-C is entropy-driven, while the formation of C-bump-B is enthalpy-dominated. Furthermore, when the length of C blocks is much lower than that of B blocks, an inner-penetrating vesicle was discovered. The results gained through the simulations provide an insight into the mechanism behind the formation of raspberry-like micelles.
Collapse
Affiliation(s)
- Tao Jiang
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | | | | | | | | |
Collapse
|
18
|
Ren T, Wang A, Yuan W, Li L, Feng Y. Synthesis, self‐assembly, fluorescence, and thermosensitive properties of star‐shaped amphiphilic copolymers with porphyrin core. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.24665] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Tianbin Ren
- Institute of Nano and Bio‐Polymeric Materials, School of Materials Science and Engineering, Tongji University, Shanghai 200092, People's Republic of China
- Key Laboratory of Advanced Civil Engineering Materials, Ministry of Education, Shanghai 200092, People's Republic of China
| | - An Wang
- Institute of Nano and Bio‐Polymeric Materials, School of Materials Science and Engineering, Tongji University, Shanghai 200092, People's Republic of China
| | - Weizhong Yuan
- Institute of Nano and Bio‐Polymeric Materials, School of Materials Science and Engineering, Tongji University, Shanghai 200092, People's Republic of China
- Key Laboratory of Advanced Civil Engineering Materials, Ministry of Education, Shanghai 200092, People's Republic of China
| | - Lan Li
- Institute of Nano and Bio‐Polymeric Materials, School of Materials Science and Engineering, Tongji University, Shanghai 200092, People's Republic of China
| | - Yue Feng
- Institute of Nano and Bio‐Polymeric Materials, School of Materials Science and Engineering, Tongji University, Shanghai 200092, People's Republic of China
| |
Collapse
|
19
|
Wilmes GM, Arnold DJ, Kawchak KS. Effect of chain rigidity on block copolymer micelle formation and dissolution as observed by 1H-NMR spectroscopy. JOURNAL OF POLYMER RESEARCH 2011. [DOI: 10.1007/s10965-011-9585-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
20
|
Gorrasi G, Stanzione M, Izzo L. Synthesis and characterization of novel star-like PEO–PMMA based copolymers. REACT FUNCT POLYM 2011. [DOI: 10.1016/j.reactfunctpolym.2010.11.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
21
|
Liu J, Yoneda A, Liu D, Yokoyama Y, Yusa SI, Nakashima K. Mixed micelles of poly(styrene-b-3-(methacryloylamino)propyltrimethylammonium chloride-b-ethylene oxide) and anionic amphiphiles in aqueous solutions. CAN J CHEM 2010. [DOI: 10.1139/v09-159] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The micelles of poly(styrene-b-3-(methacryloylamino)propyltrimethylammonium chloride-b-ethylene oxide) (PS-b-PMAPTAC-b-PEO) have been successfully prepared in aqueous solutions. The micelles have a PS core, cationic PMAPTAC shell, and PEO corona. Due to the short PS chain (degree of polymerization = 8), the formation of micelles is difficult at a low concentration, and the micelles are detected only at concentrations higher than 1 g L–1. The addition of anionic amphiphiles, such as sodium dodecyl sulfate (SDS) and poly(methacrylic acid) (PMAA), induces the formation of mixed micelles at a low concentration level of the polymer (~0.005 g L–1). This can be ascribed to insolubilization of the cationic PMAPTAC block due to charge neutralization by the anionic amphiphiles. The binding of SDS or PMAA to the PMAPTAC block is confirmed by zeta-potential measurements. The mixed micelles are characterized by dynamic light scattering (DLS), scanning electron microscopy (SEM), and fluorescence measurements. Based on DLS measurements, it is revealed that the hydrodynamic diameter of the mixed micelles falls in the range of 120–130 nm. SEM measurements provided clear pictures of mixed micelles with a spherical morphology. The kinetics of exchange of organic dyes between the micelle particles was investigated by fluorescence techniques. The result indicates that the exchange of the dyes between the micelle particles takes places within a time scale of seconds.
Collapse
Affiliation(s)
- Jingjing Liu
- Department of Chemistry, Faculty of Science and Engineering, Saga University, 1 Honjo-machi, Saga 840-8502, Japan
- Department of Materials Science and Chemistry, University of Hyogo, 2167 Shosha, Himeji 671-2280, Japan
| | - Airi Yoneda
- Department of Chemistry, Faculty of Science and Engineering, Saga University, 1 Honjo-machi, Saga 840-8502, Japan
- Department of Materials Science and Chemistry, University of Hyogo, 2167 Shosha, Himeji 671-2280, Japan
| | - Dian Liu
- Department of Chemistry, Faculty of Science and Engineering, Saga University, 1 Honjo-machi, Saga 840-8502, Japan
- Department of Materials Science and Chemistry, University of Hyogo, 2167 Shosha, Himeji 671-2280, Japan
| | - Yuuichi Yokoyama
- Department of Chemistry, Faculty of Science and Engineering, Saga University, 1 Honjo-machi, Saga 840-8502, Japan
- Department of Materials Science and Chemistry, University of Hyogo, 2167 Shosha, Himeji 671-2280, Japan
| | - Shin-ichi Yusa
- Department of Chemistry, Faculty of Science and Engineering, Saga University, 1 Honjo-machi, Saga 840-8502, Japan
- Department of Materials Science and Chemistry, University of Hyogo, 2167 Shosha, Himeji 671-2280, Japan
| | - Kenichi Nakashima
- Department of Chemistry, Faculty of Science and Engineering, Saga University, 1 Honjo-machi, Saga 840-8502, Japan
- Department of Materials Science and Chemistry, University of Hyogo, 2167 Shosha, Himeji 671-2280, Japan
| |
Collapse
|
22
|
Voets IK, Leermakers FA, de Keizer A, Charlaganov M, Stuart MAC. Co-assembly Towards Janus Micelles. SELF ORGANIZED NANOSTRUCTURES OF AMPHIPHILIC BLOCK COPOLYMERS I 2010. [DOI: 10.1007/12_2010_100] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
|
23
|
Schacher F, Walther A, Ruppel M, Drechsler M, Müller AHE. Multicompartment Core Micelles of Triblock Terpolymers in Organic Media. Macromolecules 2009. [DOI: 10.1021/ma9002424] [Citation(s) in RCA: 98] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Felix Schacher
- Makromolekulare Chemie II and Zentrum für Kolloide and Grenzflächen, Universität Bayreuth, 95440 Bayreuth, Germany, Department of Applied Physics, Helsinki University of Technology, FIN-02015 TKK, Helsinki, Finland, and Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
| | - Andreas Walther
- Makromolekulare Chemie II and Zentrum für Kolloide and Grenzflächen, Universität Bayreuth, 95440 Bayreuth, Germany, Department of Applied Physics, Helsinki University of Technology, FIN-02015 TKK, Helsinki, Finland, and Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
| | - Markus Ruppel
- Makromolekulare Chemie II and Zentrum für Kolloide and Grenzflächen, Universität Bayreuth, 95440 Bayreuth, Germany, Department of Applied Physics, Helsinki University of Technology, FIN-02015 TKK, Helsinki, Finland, and Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
| | - Markus Drechsler
- Makromolekulare Chemie II and Zentrum für Kolloide and Grenzflächen, Universität Bayreuth, 95440 Bayreuth, Germany, Department of Applied Physics, Helsinki University of Technology, FIN-02015 TKK, Helsinki, Finland, and Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
| | - Axel H. E. Müller
- Makromolekulare Chemie II and Zentrum für Kolloide and Grenzflächen, Universität Bayreuth, 95440 Bayreuth, Germany, Department of Applied Physics, Helsinki University of Technology, FIN-02015 TKK, Helsinki, Finland, and Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
| |
Collapse
|
24
|
Zhang Y, Liu H, Dong H, Li C, Liu S. Micelles possessing mixed cores and thermoresponsive shells fabricated from well-defined amphiphilic ABC miktoarm star terpolymers. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/pola.23273] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
25
|
Wang X, Liu L, Luo Y, Zhao H. Bioconjugation of biotin to the interfaces of polymeric micelles via in situ click chemistry. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:744-750. [PMID: 19105785 DOI: 10.1021/la802810w] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Azido-containing amphiphilic triblock copolymer poly(ethylene glycol)-b-poly(azidoethyl methacrylate)-b-poly(methyl methacrylate) (PEG-b-PAzEMA-b-PMMA) was prepared by postpolymerization functionalization of poly(ethylene glycol)-b-poly(hydroxyethyl methacrylate)-b-poly(methyl methacrylate) (PEG-b-PHEMA-b-PMMA). In aqueous media, PEG-b-PAzEMA-b-PMMA self-assembled into spherical micelles with the azide groups at the hydrophobic/hydrophilic interface due to the molecular architecture. Biotin was conjugated to the micelles by in situ click chemistry between azide groups and alkynated biotin, resulting in the formation of a functional interface between the hydrophilic shell and the hydrophobic core. The bioavailability of biotin to avidin was demonstrated by an avidin/4'-hydroxyazobenzene-2-carboxylic acid (avidin/HABA) assay, transmission electron microscopy, and dynamic light scattering investigations.
Collapse
Affiliation(s)
- Xiaojuan Wang
- Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, Tianjin 300071, People's Republic of China
| | | | | | | |
Collapse
|
26
|
Liu J, Liu D, Yokoyama Y, Yusa SI, Nakashima K. Physicochemical properties of micelles of poly(styrene-b-[3-(methacryloylamino)propyl]trimethylammonium chloride-b-ethylene oxide) in aqueous solutions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:739-743. [PMID: 19072145 DOI: 10.1021/la802690m] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Polymeric micelles from a new triblock copolymer, polystyrene-block-poly[(3-(methacryloylamino)propyl)trimethylammonium chloride]-block-poly(ethylene oxide) (PS-b-PMAPTAC-b-PEO), were prepared in aqueous solutions and characterized by various techniques including dynamic light scattering (DLS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and fluorescence spectroscopy. The micelle consists of a PS core, PMAPTAC shell, and PEO corona. It was revealed by SEM and DLS measurements that the micelles have a spherical structure with a hydrodynamic diameter about 75 nm. The addition of tungstate to the micellar solution caused a morphological change in the micelles from extended to shrunken spheres, which can be attributed to the fact that electrostatic repulsion among the cationic PMAPTAC blocks is canceled by the negative charge of the bound tungstate ions. Effective incorporation of tungstate ions into the micelles were confirmed by TEM and zeta-potential measurements.
Collapse
Affiliation(s)
- Jingjing Liu
- Department of Chemistry, Faculty of Science and Engineering, Saga University, 1 Honjo-machi, Saga 840-8502, Japan
| | | | | | | | | |
Collapse
|
27
|
|
28
|
Njikang G, Han D, Wang J, Liu G. ABC Triblock Copolymer Micelle-Like Aggregates in Selective Solvents for A and C. Macromolecules 2008. [DOI: 10.1021/ma801882r] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gabriel Njikang
- Department of Chemistry, Queen’s University, 90 Bader Lane, Kingston, Ontario, Canada K7L 3N6
| | - Dehui Han
- Department of Chemistry, Queen’s University, 90 Bader Lane, Kingston, Ontario, Canada K7L 3N6
| | - Jian Wang
- Department of Chemistry, Queen’s University, 90 Bader Lane, Kingston, Ontario, Canada K7L 3N6
| | - Guojun Liu
- Department of Chemistry, Queen’s University, 90 Bader Lane, Kingston, Ontario, Canada K7L 3N6
| |
Collapse
|
29
|
Voets IK, Fokkink R, de Keizer A, May RP, de Waard P, Cohen Stuart MA. On the transition between a heterogeneous and homogeneous corona in mixed polymeric micelles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:12221-12227. [PMID: 18828617 DOI: 10.1021/la801816p] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Two-dimensional NMR and small-angle neutron scattering experiments were performed on comicelles of poly(N-methyl-2-vinyl pyridinium iodide)-block-poly(ethylene oxide), P2MVP-b-PEO, and poly(acrylic acid)-block-poly(acryl amide), PAA-b-PAAm, in aqueous solutions to study whether a transition between a heterogeneous (Janus-type) and homogeneous corona can be observed upon a variation of parameters that are anticipated to affect the miscibility of the PEO and PAAm coronal blocks. Investigated were the effect of a salt-induced decrease in micellar aggregation number, P agg for 1<or=[NaNO3]<or=279 mM, a temperature increase for 25<or=T<or=80 degrees C, a variation of the fraction of EO monomers in the corona, fEO, at a fixed corona block length, N corona, for 0<or=fEO<or=1, a decrease in the PEO block length, N PEO, at a fixed PAAm block length, NPAAm, for 200<or=NPEO<or=450, and finally, upon a decrease in corona block length at NPAAm=NPEO for 100<or=N corona<or=400. These parameters should affect the mixing/demixing transition via their effect on the PEO/PAAm interfacial area (e.g., as in the case of f EO and P agg) or the relevant Flory-Huggins interaction parameters (e.g., as in the case of temperature). None of the above parameters was shown to yield a transition toward a homogeneous corona wherein the polymer chains are randomly mixed; i.e., the segregation of PAAm and PEO chains within the micellar corona of comicelles of PAA-b-PAAm and P2MVP-b-PEO appears to be rather robust.
Collapse
Affiliation(s)
- Ilja K Voets
- Laboratory of Physical Chemistry and Colloid Science, Wageningen University, Dreijenplein 6, 6703 HB Wageningen, The Netherlands.
| | | | | | | | | | | |
Collapse
|
30
|
Hu J, Njikang G, Liu G. Twisted ABC Triblock Copolymer Cylinders with Segregated A and C Coronal Chains. Macromolecules 2008. [DOI: 10.1021/ma801626y] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jiwen Hu
- Department of Chemistry, Queen’s University, 90 Bader Lane, Kingston, Ontario, Canada K7L 3N
| | - Gabriel Njikang
- Department of Chemistry, Queen’s University, 90 Bader Lane, Kingston, Ontario, Canada K7L 3N
| | - Guojun Liu
- Department of Chemistry, Queen’s University, 90 Bader Lane, Kingston, Ontario, Canada K7L 3N
| |
Collapse
|
31
|
Tsitsilianis C, Roiter Y, Katsampas I, Minko S. Diversity of Nanostructured Self-Assemblies from a pH-Responsive ABC Terpolymer in Aqueous Media. Macromolecules 2008. [DOI: 10.1021/ma070948e] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
32
|
Triftaridou AI, Vamvakaki M, Patrickios CS. Cationic Amphiphilic Model Networks Based on Symmetrical ABCBA Pentablock Terpolymers: Synthesis, Characterization, and Modeling. Biomacromolecules 2007; 8:1615-23. [PMID: 17417905 DOI: 10.1021/bm0611477] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Eight isomeric networks based on equimolar terpolymers were synthesized using group transfer polymerization (GTP) and were characterized in terms of their swelling properties. Two hydrophilic monomers, the nonionic methoxy hexa(ethylene glycol) methacrylate (HEGMA) and the ionizable 2-(dimethylamino)ethyl methacrylate (DMAEMA), and a hydrophobic (nonionic) monomer, methyl methacrylate (MMA), were employed for the syntheses. 1,4-Bis(methoxytrimethylsiloxymethylene)cyclohexane (MTSMC) was used as the bifunctional GTP initiator, while ethylene glycol dimethacrylate (EGDMA) served as the cross-linker. Seven of the networks were model networks, six of which were based on the symmetrical pentablock terpolymers ABCBA, ACBCA, BACAB, BCACB, CBABC, and CABAC, whereas the seventh model network was based on the statistical terpolymer. The eighth network was a randomly cross-linked network based on the statistical terpolymer, prepared by the simultaneous quaterpolymerization of the three monomers and the cross-linker. The molecular weights and molecular weight distributions of the linear pentablock terpolymer precursors, as well as those of their homopolymer and ABA triblock copolymer precursors, were characterized by gel permeation chromatography (GPC) in tetrahydrofuran. The sol fraction of each network was measured and found to be relatively low. The aqueous degrees of swelling of all networks were found to increase at acidic pH due to the ionization of the DMAEMA tertiary amine units. The acidic degrees of swelling of the pentablock terpolymer networks were lower than those of their statistical counterparts due to microphase separation in the former type of networks, also confirmed by thermodynamic calculations and small-angle neutron scattering experiments.
Collapse
|
33
|
Stavrouli N, Triftaridou AI, Patrickios CS, Tsitsilianis C. Multi-Compartment Unimolecular Micelles from (ABC)n Multi-Arm Star Triblock Terpolymers. Macromol Rapid Commun 2007. [DOI: 10.1002/marc.200600738] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
34
|
Ma JW, Li X, Tang P, Yang Y. Self-Assembly of Amphiphilic ABC Star Triblock Copolymers and Their Blends with AB Diblock Copolymers in Solution: Self-Consistent Field Theory Simulations. J Phys Chem B 2007; 111:1552-8. [PMID: 17266363 DOI: 10.1021/jp067650v] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The self-assembled morphologies of amphiphilic ABC star triblock copolymers consisting of hydrophilic A blocks and hydrophobic B and C blocks and the blends with their counterpart linear AB diblock copolymers in solution are investigated by 2D real-space implementation of self-consistent field theory (SCFT) simulation. The star triblock copolymers self-assemble in solution to form various micellar structures from hamburger, to segmented wormlike, to toroidal segmented micelles, and finally to vesicles with simultaneously increasing hydrophobic lengths of blocks B and C. When the length of hydrophobic blocks B and C is asymmetric, specific bead-on-string worm micelles are found. Particularly, when the star ABC triblock copolymer is in a strong segregation regime and both B and C blocks are strongly hydrophobic, quite long segmented wormlike micelles are obtained, which had not been found in previously investigated diblock and linear ABC triblock copolymers solution. Additionally, raspberry micelles with beads dispersed on the core also occur in the strong segregation regime of bulk star ABC triblock copolymers. Furthermore, the aggregate morphology of ABC star triblock copolymers is strongly influenced by the addition of linear AB diblock copolymers. The most significant feature is that the long segmented worms will become shorter, to form hamburger micelles with the addition of AB diblock copolymers. These simulations are in good agreement with the experimental findings by Lodge's group.
Collapse
Affiliation(s)
- Jian Wai Ma
- Key Laboratory of Molecular Engineering of Polymer, Ministry of Education, and Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | | | | | | |
Collapse
|
35
|
Nakashima K, Bahadur P. Aggregation of water-soluble block copolymers in aqueous solutions: recent trends. Adv Colloid Interface Sci 2006; 123-126:75-96. [PMID: 16860770 DOI: 10.1016/j.cis.2006.05.016] [Citation(s) in RCA: 197] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
This review summarizes recent literature and some of our own results on aggregation behavior on water-soluble block copolymers belonging to three different classes viz. hydrophilic-hydrophobic (AB, ABA and BAB) block copolymers, double hydrophilic block copolymers (DHBCs) and ABC triblock copolymers. In the case of amphiphilic copolymers, special attention has been focussed on aggregation of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO) triblock copolymers (Pluronics) and their aggregation in aqueous solutions at different temperatures as well as in the presence of various additives. Recent studies based on modern techniques viz. scattering (static and dynamic light scattering and small angle neutron scattering), spectral methods, e.g., fluorescence (static and time resolved), nuclear magnetic resonance and Fourier transform infrared spectroscopies, thermal methods e.g., differential scanning calorimetry and isothermal titration calorimetry, cryotransmission electron microscopy, ultrasonic absorption along with general physical properties like surface tension, viscosity and dye solubilization are summarized. For the DHBCs where one of the blocks is usually a polyion, complex formation by adding oppositely charged ions induces the formation of nanoaggregates. Characterization of such nanoaggregates of polyion complexes of DHBCs and their potential use for incorporation of ionic solutes in the micellar core are reviewed. The formation and characteristics of core-shell-corona micelles of ABC triblock copolymers and their applications as vehicles for controlled drug release are also discussed.
Collapse
Affiliation(s)
- Kenichi Nakashima
- Department of Chemistry, Faculty of Science and Engineering, Saga University, 1 Honjo-machi, Saga 840-8502, Japan
| | | |
Collapse
|
36
|
Thermoresponsive core–shell–corona micelles of poly(ethyleneglycol)-b-poly(N-isopropylacrylamide)-b-polystyrene. POLYMER 2006. [DOI: 10.1016/j.polymer.2006.09.053] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
37
|
Castelletto V, Hamley IW, Triftaridou AI, Patrickios CS. SAXS Investigation of ABC Triblock Star Terpolymers in Aqueous Solution. J MACROMOL SCI B 2006. [DOI: 10.1081/mb-120027750] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- V. Castelletto
- a Department of Chemistry , University of Leeds , Leeds , LS2 9JT , UK
| | - I. W. Hamley
- a Department of Chemistry , University of Leeds , Leeds , LS2 9JT , UK
| | | | - C. S. Patrickios
- b Department of Chemistry , University of Cyprus , Nicosia , Cyprus
| |
Collapse
|
38
|
Voets IK, de Keizer A, Cohen Stuart MA, de Waard P. Core and Corona Structure of Mixed Polymeric Micelles. Macromolecules 2006. [DOI: 10.1021/ma060965o] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ilja K. Voets
- Laboratory of Physical Chemistry and Colloid Science, Wageningen University, Dreijenplein 6, 6703 HB Wageningen, The Netherlands
| | - Arie de Keizer
- Laboratory of Physical Chemistry and Colloid Science, Wageningen University, Dreijenplein 6, 6703 HB Wageningen, The Netherlands
| | - Martien A. Cohen Stuart
- Laboratory of Physical Chemistry and Colloid Science, Wageningen University, Dreijenplein 6, 6703 HB Wageningen, The Netherlands
| | - Pieter de Waard
- Wageningen NMR Centre, Wageningen University, Dreijenlaan 3, 6703 HA Wageningen, The Netherlands
| |
Collapse
|
39
|
Studies on the self-assembly behavior of the amphiphilic block copolymer of PSt-b-PAA in apolar solvents with polar fluorescent probe. Colloid Polym Sci 2006. [DOI: 10.1007/s00396-005-1409-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
40
|
Yan X, Liu G, Hu J, Willson CG. Coaggregation of B−C and D−C Diblock Copolymers with H-Bonding C Blocks in Block-Selective Solvents. Macromolecules 2006. [DOI: 10.1021/ma052435i] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaohu Yan
- Department of Chemistry, Queen's University, 90 Bader Lane, Kingston, Ontario, Canada K7L 3N6
| | - Guojun Liu
- Department of Chemistry, Queen's University, 90 Bader Lane, Kingston, Ontario, Canada K7L 3N6
| | - Jiwen Hu
- Department of Chemistry, Queen's University, 90 Bader Lane, Kingston, Ontario, Canada K7L 3N6
| | - C. Grant Willson
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712-1167
| |
Collapse
|
41
|
Pleštil J, Koňák Č, Hu X, Lal J. Study of Comicellization of Diblock Copolymers in a Selective Solvent. MACROMOL CHEM PHYS 2006. [DOI: 10.1002/macp.200500438] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
42
|
Zhang W, Shi L, Miao ZJ, Wu K, An Y. Core-Shell-Corona Micellar Complexes between Poly(ethylene glycol)-block-poly(4-vinyl pyridine) and Polystyrene-block-poly(acrylic acid). MACROMOL CHEM PHYS 2005. [DOI: 10.1002/macp.200500368] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
43
|
Zhu J, Jiang W. Self-Assembly of ABC Triblock Copolymer into Giant Segmented Wormlike Micelles in Dilute Solution. Macromolecules 2005. [DOI: 10.1021/ma051258i] [Citation(s) in RCA: 97] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jintao Zhu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Graduate School of the Chinese Academy of Sciences, People's Republic of China
| | - Wei Jiang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Graduate School of the Chinese Academy of Sciences, People's Republic of China
| |
Collapse
|
44
|
Hu J, Liu G. Chain Mixing and Segregation in B−C and C−D Diblock Copolymer Micelles. Macromolecules 2005. [DOI: 10.1021/ma0510082] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jiwen Hu
- Department of Chemistry, Queen's University, 90 Bader Lane, Kingston, Ontario, Canada K7L 3N6
| | - Guojun Liu
- Department of Chemistry, Queen's University, 90 Bader Lane, Kingston, Ontario, Canada K7L 3N6
| |
Collapse
|
45
|
Zhang W, Shi L, Gao L, An Y, Wu K. Formation of Core-Shell-Corona Micellar Complexes through Adsorption of Double Hydrophilic Diblock Copolymers into Core-Shell Micelles. Macromol Rapid Commun 2005. [DOI: 10.1002/marc.200500281] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
46
|
Kubowicz S, Baussard JF, Lutz JF, Thünemann AF, von Berlepsch H, Laschewsky A. Multicompartment Micelles Formed by Self-Assembly of Linear ABC Triblock Copolymers in Aqueous Medium. Angew Chem Int Ed Engl 2005; 44:5262-5. [PMID: 16035011 DOI: 10.1002/anie.200500584] [Citation(s) in RCA: 274] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Stephan Kubowicz
- Fraunhofer Institute for Applied Polymer Research, Potsdam, Germany
| | | | | | | | | | | |
Collapse
|
47
|
Kubowicz S, Baussard JF, Lutz JF, Thünemann AF, von Berlepsch H, Laschewsky A. Multikompartiment-Micellen durch Selbstorganisation von linearen ABC-Triblock-Copolymeren in wässriger Lösung. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200500584] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
48
|
Wang R, Tang P, Qiu F, Yang Y. Aggregate Morphologies of Amphiphilic ABC Triblock Copolymer in Dilute Solution Using Self-Consistent Field Theory. J Phys Chem B 2005; 109:17120-7. [PMID: 16853184 DOI: 10.1021/jp053248p] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The complex microstructures of amphiphilic ABC linear triblock copolymers in which one of the end blocks is relatively short and hydrophilic, and the other two blocks B and C are hydrophobic in a dilute solution, have been investigated by the real-space implementation of self-consistent field theory (SCFT) in two dimensions (2D). In contrast to diblock copolymers in solution, the aggregation of triblock copolymers are more complicated due to the presence of the second hydrophobic blocks and, hence, big ranges of parameter space controlling the morphology. By tailoring the hydrophobic degree and its difference between the blocks B and C, the various shapes of vesicles, circlelike and linelike micelles possibly corresponding to spherelike, and rodlike micelles in 3D, and especially, peanutlike micelles not found in diblock copolymers are observed. The transition from vesicles to circlelike micelles occurs with increasing the hydrophobicity of the blocks B and C, while the transition from circlelike micelles to linelike micelles or from the mixture of micelles and vesicles to the long linelike micelles takes place when the repulsive interaction of the end hydrophobic block C is stronger than that of the middle hydrophobic block B. Furthermore, it is favorable for dispersion of the block copolymer in the solvent into aggregates when the repulsion of the solvent to the end hydrophobic block is larger than that of the solvent to the middle hydrophobic block. Especially when the bulk block copolymers are in a weak segregation regime, the competition between the microphase separation and macrophase separation exists and the large compound micelle-like aggregates are found due to the macrophase separation with increasing the hydrophobic degree of blocks B and C, which is absent in diblock copolymer solution. The simulation results successfully reproduce the existing experimental ones.
Collapse
Affiliation(s)
- Rong Wang
- Department of Polymer Science and Engineering, College of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
| | | | | | | |
Collapse
|
49
|
Pleštil J, Kříž J, Koňák Č, Pospíšil H, Kadlec P, Sedláková Z, Grillo I, Cubitt R. SANS Study of Coated Block Copolymer Micelles. MACROMOL CHEM PHYS 2005. [DOI: 10.1002/macp.200400543] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
50
|
Sun P, Dang Q, Li B, Chen T, Wang Y, Lin H, Jin Q, Ding D, Shi AC. Mobility, Miscibility, and Microdomain Structure in Nanostructured Thermoset Blends of Epoxy Resin and Amphiphilic Poly(ethylene oxide)-block-poly(propylene oxide)-block-poly(ethylene oxide) Triblock Copolymers Characterized by Solid-State NMR. Macromolecules 2005. [DOI: 10.1021/ma0505979] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pingchuan Sun
- Key Laboratory of Functional Polymer Materials for Adsorption and Separation, College of Chemistry and College of Physics, Nankai University, Tianjin, 300071, China
| | - Qinqin Dang
- Key Laboratory of Functional Polymer Materials for Adsorption and Separation, College of Chemistry and College of Physics, Nankai University, Tianjin, 300071, China
| | - Baohui Li
- Key Laboratory of Functional Polymer Materials for Adsorption and Separation, College of Chemistry and College of Physics, Nankai University, Tianjin, 300071, China
| | - Tiehong Chen
- Key Laboratory of Functional Polymer Materials for Adsorption and Separation, College of Chemistry and College of Physics, Nankai University, Tianjin, 300071, China
| | - Yinong Wang
- Key Laboratory of Functional Polymer Materials for Adsorption and Separation, College of Chemistry and College of Physics, Nankai University, Tianjin, 300071, China
| | - Hai Lin
- Key Laboratory of Functional Polymer Materials for Adsorption and Separation, College of Chemistry and College of Physics, Nankai University, Tianjin, 300071, China
| | - Qinghua Jin
- Key Laboratory of Functional Polymer Materials for Adsorption and Separation, College of Chemistry and College of Physics, Nankai University, Tianjin, 300071, China
| | - Datong Ding
- Key Laboratory of Functional Polymer Materials for Adsorption and Separation, College of Chemistry and College of Physics, Nankai University, Tianjin, 300071, China
| | - An-Chang Shi
- Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| |
Collapse
|