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Self-assembled nanostructures from amphiphilic block copolymers prepared via ring-opening metathesis polymerization (ROMP). Prog Polym Sci 2020. [DOI: 10.1016/j.progpolymsci.2020.101278] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Pirolt F, Glatter O, Trimmel G. Reverse Hexosome Dispersions in Alkanes-The Challenge of Inverting Structures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:8379-8387. [PMID: 29902017 DOI: 10.1021/acs.langmuir.8b01455] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Monoglycerides form lipophilic liquid-crystalline (LC) phases when mixed with water. The corresponding LC nanostructures coexist with excess water, which is a necessary condition for the formation of internally nanostructured dispersed particles. These nanostructures comprise bicontinuous cubic phases, inverted hexagonal phases, and inverted micellar cubic phases. The dispersed particles are therefore named cubosomes, hexosomes, or micellar cubosomes. Such dispersions are usually stabilized by hydrophilic high-molecular-weight triblock (TB) copolymers. Another way to stabilize such dispersions is by forming the so-called Pickering or Ramsden emulsions using nanoparticles as stabilizers. In this contribution, we explore the possibility of forming and stabilizing inverted or reverse systems, that is, dispersions of hydrophilic LC phases in an excess oil phase like tetradecane. Our aim was to change from oil-in-water emulsions to water-in-oil emulsions, where the water phase is a LC phase in equilibrium with excess oil and where the oil is nonpolar, for example, an alkane. This work consists of three parts: (1) to find a hexagonal hydrophilic LC phase that can not only incorporate a certain amount of tetradecane but can also coexist with excess tetradecane in the case of higher oil concentration, (2) to find a suitable stabilizer-either polymeric or nanoparticle type-that can stabilize the emulsion without destroying the hexagonal LC phase, and finally (3) to check the stability of this reverse hexosome emulsion. We discovered that it is possible to create a hexagonal hydrophilic LC phase with short-chain nonionic surfactants such as polyethylene glycol alkyl ethers or with high-molecular-weight TB copolymers of type A-B-A. Furthermore, it is possible to successfully stabilize the reverse hexosomes with low hydrophilic-lipophilic balance TB copolymers-either synthesized in our laboratory or commercially available ones-as well as with hydrophobized, commercially available silica nanoparticles.
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Riga EK, Boschert D, Vöhringer M, Widyaya VT, Kurowska M, Hartleb W, Lienkamp K. Fluorescent ROMP Monomers and Copolymers for Biomedical Applications. MACROMOL CHEM PHYS 2017; 218:1700273. [PMID: 34404977 PMCID: PMC7611511 DOI: 10.1002/macp.201700273] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The synthesis and characterization of a series of green, blue and red-fluorescent exo-oxanorbornene acid and imide monomers carrying nitrobenzofurazan, coumarin, and Rhodamin B, respectively, as fluorophores is presented. These monomers carry oxanorbornene as polymerizable unit, and were readily copolymerized with bioactive functional oxanorbornene monomers by ring-opening metathesis polymerization (ROMP), as demonstrated by gel permeation chromatography and NMR spectroscopy. Due to the ease of synthesis of these monomers, and their cost-effectiveness compared many to other fluorescent probes, they are useful for biomaterials applications.
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Affiliation(s)
| | | | | | | | | | | | - Karen Lienkamp
- Bioactive Polymer Synthesis and Surface Engineering Group, Department of Microsystems Engineering (IMTEK) and Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), Georges-Köhler-Allee 105, 79110 Freiburg, Germany
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Jia YG, Zhu XX. Thermo- and pH-Responsive Copolymers Bearing Cholic Acid and Oligo(ethylene glycol) Pendants: Self-Assembly and pH-Controlled Release. ACS APPLIED MATERIALS & INTERFACES 2015; 7:24649-24655. [PMID: 26479835 DOI: 10.1021/acsami.5b06909] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A family of block and random copolymers of norbornene derivatives bearing cholic acid and oligo(ethylene glycol) pendants were prepared in the presence of Grubbs' catalyst. The phase transition temperature of the copolymers in aqueous solutions may be tuned by the variation of comonomer ratios and pH values. Both types of copolymers formed micellar nanostructures with a hydrophilic poly(ethylene glycol) shell and a hydrophobic core containing cholic acid residues. The micellar size increased gradually with increasing pH due to the deprotonation of the carboxylic acid groups. These micelles were capable of encapsulating hydrophobic compounds such as Nile Red (NR). A higher hydrophobicity/hydrophilicity ratio in both copolymers resulted in a higher loading capacity for NR. With similar molecular weights and monomer compositions, the block copolymers showed a higher loading capacity for NR than the random copolymers. The NR-loaded micelles exhibited a pH-triggered release behavior. At pH 7.4 within 96 h, the micelles formed by the block and random of copolymers released 56 and 97% NR, respectively. Therefore, these micelles may have promise for use as therapeutic nanocarriers in drug delivery systems.
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Affiliation(s)
- Yong-Guang Jia
- Département de Chimie, Université de Montréal , C.P. 6128, Succursale Centre-ville, Montréal, QC H3C 3J7, Canada
| | - X X Zhu
- Département de Chimie, Université de Montréal , C.P. 6128, Succursale Centre-ville, Montréal, QC H3C 3J7, Canada
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Dye-functionalized polymers via ring opening metathesis polymerization: principal routes and applications. MONATSHEFTE FUR CHEMIE 2015. [DOI: 10.1007/s00706-015-1493-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Shao Y, Jia YG, Shi C, Luo J, Zhu XX. Block and random copolymers bearing cholic acid and oligo(ethylene glycol) pendant groups: aggregation, thermosensitivity, and drug loading. Biomacromolecules 2014; 15:1837-44. [PMID: 24725005 PMCID: PMC4020593 DOI: 10.1021/bm5002262] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of block and random copolymers consisting of oligo(ethylene glycol) and cholic acid pendant groups were synthesized via ring-opening metathesis polymerization of their norbornene derivatives. These block and random copolymers were designed to have similar molecular weights and comonomer ratios; both types of copolymers showed thermosensitivity in aqueous solutions with similar cloud points. The copolymers self-assembled into micelles in water as shown by dynamic light scattering and transmission electron microscopy. The hydrodynamic diameter of the micelles formed by the block copolymer is much larger and exhibited a broad and gradual shrinkage from 20 to 54 °C below its cloud point, while the micelles formed by the random copolymers are smaller in size but exhibited some swelling in the same temperature range. Based on in vitro drug release studies, 78% and 24% paclitaxel (PTX) were released in 24 h from micelles self-assembled by the block and random copolymers, respectively. PTX-loaded micelles formed by the block and random copolymers exhibited apparent antitumor efficacy toward the ovarian cancer cells with a particularly low half-maximal inhibitory concentration (IC50) of 27.4 and 40.2 ng/mL, respectively. Cholic acid-based micelles show promise as a versatile and potent platform for cancer chemotherapy.
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Affiliation(s)
- Yu Shao
- Département de Chimie, Université de Montréal , C.P. 6128, Succ. Centre-ville, Montréal, Quebec H3C 3J7, Canada
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Gallas K, Knall AC, Scheicher SR, Fast DE, Saf R, Slugovc C. A Modular Approach Towards Fluorescent pH and Ascorbic Acid Probes Based on Ring-Opening Metathesis Polymerization. MACROMOL CHEM PHYS 2013. [DOI: 10.1002/macp.201300561] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Katharina Gallas
- Institute for Chemistry and Technology of Materials (ICTM), Graz University of Technology; Stremayrgasse 9/5, Graz, A-8010; Austria
| | - Astrid-Caroline Knall
- Institute for Chemistry and Technology of Materials (ICTM), Graz University of Technology; Stremayrgasse 9/5, Graz, A-8010; Austria
| | - Sylvia R. Scheicher
- Joanneum Research, Institute of Surface Technologies and Photonics; Steyrergasse 17; Graz A-8010 Austria
| | - David E. Fast
- Institute for Chemistry and Technology of Materials (ICTM), Graz University of Technology; Stremayrgasse 9/5, Graz, A-8010; Austria
| | - Robert Saf
- Institute for Chemistry and Technology of Materials (ICTM), Graz University of Technology; Stremayrgasse 9/5, Graz, A-8010; Austria
| | - Christian Slugovc
- Institute for Chemistry and Technology of Materials (ICTM), Graz University of Technology; Stremayrgasse 9/5, Graz, A-8010; Austria
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Knall AC, Schinagl C, Pein A, Noormofidi N, Saf R, Slugovc C. Polynorbornenes With Pendant Europium (III) Coordination Compounds. MACROMOL CHEM PHYS 2012. [DOI: 10.1002/macp.201200454] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Ring-opening metathesis polymerisable charged platinum(II) complexes: Towards enhanced phosphorescent quantum yields by aggregation in polymers. POLYMER 2011. [DOI: 10.1016/j.polymer.2011.03.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Kreutzwiesner E, Noormofidi N, Wiesbrock F, Kern W, Rametsteiner K, Stelzer F, Slugovc C. Contact bactericides and fungicides on the basis of amino-functionalized poly(norbornene)s. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/pola.24241] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Bauer T, Slugovc C. The thermo responsive behavior of glycol functionalized ring opening metathesis polymers. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/pola.23977] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Noormofidi N, Slugovc C. Optical response of phenantroimidazole-dyes covalently linked to a polynorbornene-backbone to acid and base. Eur Polym J 2010. [DOI: 10.1016/j.eurpolymj.2010.01.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2008. Coord Chem Rev 2010. [DOI: 10.1016/j.ccr.2009.07.018] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Kaditi E, Pispas S. β-Lactam functionalized poly(isoprene-b
-ethylene oxide) amphiphilic block copolymers. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/pola.23748] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Eren T, Tew GN. Phosphonic acid-based amphiphilic diblock copolymers derived from ROMP. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/pola.23425] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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SYNTHESIS AND SELFASSEMBLY OF AMPHIPHILIC ABA TRIBLOCK COPOLYMER via COMBINATION OF ROMP AND ATRP. ACTA POLYM SIN 2009. [DOI: 10.3724/sp.j.1105.2009.00345] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Sandholzer M, Slugovc C. Solution Self-Assembly of Core-Labeled Block Random-Copolymers Prepared by Ring Opening Metathesis Polymerization. MACROMOL CHEM PHYS 2009. [DOI: 10.1002/macp.200800549] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Niedermair F, Sandholzer M, Kremser G, Slugovc C. Solution Self-Assembly and Photophysics of Platinum Complexes Containing Amphiphilic Triblock Random Copolymers Prepared by ROMP. Organometallics 2009. [DOI: 10.1021/om900083n] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Fabian Niedermair
- Institute for Chemistry and Technology of Materials (ICTM), Graz University of Technology, Graz, Austria
| | - Martina Sandholzer
- Institute for Chemistry and Technology of Materials (ICTM), Graz University of Technology, Graz, Austria
| | - Gabriele Kremser
- Institute for Chemistry and Technology of Materials (ICTM), Graz University of Technology, Graz, Austria
| | - Christian Slugovc
- Institute for Chemistry and Technology of Materials (ICTM), Graz University of Technology, Graz, Austria
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Stubenrauch K, Voets I, Fritz‐Popovski G, Trimmel G. pH and ionic strength responsive polyelectrolyte block copolymer micelles prepared by ring opening metathesis polymerization. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/pola.23229] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kurt Stubenrauch
- Institute for Chemistry and Technology of Materials, Graz University of Technology, 8010 Graz, Austria
| | - Ilja Voets
- Laboratory of Physical Chemistry and Colloid Science, Wageningen University, 6703 HB Wageningen, The Netherlands
| | | | - Gregor Trimmel
- Institute for Chemistry and Technology of Materials, Graz University of Technology, 8010 Graz, Austria
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Lexer C, Saf R, Slugovc C. Acrylates as termination reagent for the preparation of semi-telechelic polymers made by ring opening metathesis polymerization. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/pola.23137] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Wang J, Xu W, Cheng Z, Zhu X, Zhang Z, Zhu J, Zhang W. Synthesis of chiral amphiphilic diblock copolymers via consecutive RAFT polymerizations and their aggregation behavior in aqueous solution. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/pola.23072] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jian Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow (Suzhou) University, Suzhou 215123, China
- School Science of Jiangnan University, Wuxi 214000, China
| | - Wenliang Xu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow (Suzhou) University, Suzhou 215123, China
| | - Zhenping Cheng
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow (Suzhou) University, Suzhou 215123, China
| | - Xiulin Zhu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow (Suzhou) University, Suzhou 215123, China
| | - Zhengbiao Zhang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow (Suzhou) University, Suzhou 215123, China
| | - Jian Zhu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow (Suzhou) University, Suzhou 215123, China
| | - Wei Zhang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow (Suzhou) University, Suzhou 215123, China
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Nishihara Y, Izawa S, Inoue Y, Nakayama Y, Shiono T, Takagi K. Synthesis, characterization, and thermal properties of ring‐opening metathesis polynorbornenes and their hydrogenated derivatives bearing various ester and cyano groups. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/pola.22671] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yasushi Nishihara
- Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushimanaka, Okayama 700‐8530, Japan
| | - Seisuke Izawa
- Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushimanaka, Okayama 700‐8530, Japan
| | - Yoshiaki Inoue
- Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushimanaka, Okayama 700‐8530, Japan
| | - Yuushou Nakayama
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi‐Hiroshima 739‐8527, Japan
| | - Takeshi Shiono
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi‐Hiroshima 739‐8527, Japan
| | - Kentaro Takagi
- Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushimanaka, Okayama 700‐8530, Japan
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Sandholzer M, Bichler S, Stelzer F, Slugovc C. UV-induced crosslinking of ring opening metathesis block copolymer micelles. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/pola.22574] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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25
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Sandholzer M, Schuster M, Varga F, Liska R, Slugovc C. ROMP based photoinitiator-coinitiator systems with improved migration stability. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/pola.22705] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Mingotaud AF, Mingotaud C, Moussa W. Characterization of the micellar ring opening metathesis polymerization in water of a norbornene derivative initiated by Hoveyda-Grubbs' catalyst. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/pola.22617] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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