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Precise size control of sub-10 nm structures of cholesteryl-containing mesogen-jacketed liquid crystalline polymers. POLYMER 2017. [DOI: 10.1016/j.polymer.2016.08.085] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Tóth-Katona T, Cigl M, Fodor-Csorba K, Hamplová V, Jánossy I, Kašpar M, Vojtylová T, Hampl F, Bubnov A. Functional Photochromic Methylhydrosiloxane-Based Side-Chain Liquid-Crystalline Polymers. MACROMOL CHEM PHYS 2014. [DOI: 10.1002/macp.201300729] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Tibor Tóth-Katona
- Institute for Solid State Physics and Optics, Wigner Research Centre for Physics; Hungarian Academy of Sciences, Budapest, P.O.B. 49 H-1525 Hungary
| | - Martin Cigl
- Institute of Physics, Academy of Sciences of the Czech Republic; Na Slovance 2 Prague 182 21 Czech Republic
- Department of Organic Chemistry; Institute of Chemical Technology; Technická 5, 166 28 Prague 6 Czech Republic
| | - Katalin Fodor-Csorba
- Institute for Solid State Physics and Optics, Wigner Research Centre for Physics; Hungarian Academy of Sciences, Budapest, P.O.B. 49 H-1525 Hungary
| | - Věra Hamplová
- Institute of Physics, Academy of Sciences of the Czech Republic; Na Slovance 2 Prague 182 21 Czech Republic
| | - István Jánossy
- Institute for Solid State Physics and Optics, Wigner Research Centre for Physics; Hungarian Academy of Sciences, Budapest, P.O.B. 49 H-1525 Hungary
| | - Miroslav Kašpar
- Institute of Physics, Academy of Sciences of the Czech Republic; Na Slovance 2 Prague 182 21 Czech Republic
| | - Terezia Vojtylová
- Institute of Physics, Academy of Sciences of the Czech Republic; Na Slovance 2 Prague 182 21 Czech Republic
| | - František Hampl
- Department of Organic Chemistry; Institute of Chemical Technology; Technická 5, 166 28 Prague 6 Czech Republic
| | - Alexej Bubnov
- Institute of Physics, Academy of Sciences of the Czech Republic; Na Slovance 2 Prague 182 21 Czech Republic
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Geryak R, Tsukruk VV. Reconfigurable and actuating structures from soft materials. SOFT MATTER 2014; 10:1246-63. [PMID: 24651547 DOI: 10.1039/c3sm51768c] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The recent interest in reconfigurable soft materials may lead to the next paradigm in the development of adaptive and actuating materials and structures. Actuating soft materials eventually can be precisely designed to show stimuli-sensing, multi-length scale actuation, tunable transport, programmed shape control and multifunctional orthogonal responses. Herein, we discuss the various advances in the emerging field of reconfigurable soft materials with a focus on the various parameters that can be modulated to control a complex system behavior. In particular, we detail approaches that use either long-range fields (i.e. electrical, magnetic) or changes in local thermodynamic parameters (e.g., solvent quality) in order to elicit a precise dimensional and controlled response. The theoretical underpinnings and practical considerations for different approaches are briefly presented alongside several illustrative examples from the recent studies. In the end, we summarize recent accomplishments, critical issues to consider, and give perspectives on the developments of this exciting research field.
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Affiliation(s)
- Ren Geryak
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.
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Zhang QK, Tian HJ, Li CF, Zhu YF, Liang Y, Shen Z, Fan XH. Synthesis and phase behavior of a new 2-vinylbiphenyl-based mesogen-jacketed liquid crystalline polymer with a high glass transition temperature and low threshold molecular weight. Polym Chem 2014. [DOI: 10.1039/c3py01755a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new mesogen-jacketed liquid crystalline (LC) polymer was synthesized by NMP. It has a high Tg and a relatively low threshold MW for LC formation.
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Affiliation(s)
- Qi-Kai Zhang
- Beijing National Laboratory for Molecular Sciences
- Department of Polymer Science and Engineering
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
| | - Hai-Jian Tian
- Beijing National Laboratory for Molecular Sciences
- Department of Polymer Science and Engineering
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
| | - Chang-Feng Li
- Beijing National Laboratory for Molecular Sciences
- Department of Polymer Science and Engineering
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
| | - Yu-Feng Zhu
- Beijing National Laboratory for Molecular Sciences
- Department of Polymer Science and Engineering
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
| | - Yongri Liang
- State Key Laboratory of Polymer Physics and Chemistry
- Joint Laboratory of Polymer Science and Materials
- Beijing National Laboratory for Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Science
| | - Zhihao Shen
- Beijing National Laboratory for Molecular Sciences
- Department of Polymer Science and Engineering
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
| | - Xing-He Fan
- Beijing National Laboratory for Molecular Sciences
- Department of Polymer Science and Engineering
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
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Shevchenko V, Sidorenko A, Bliznyuk V, Tkachenko I, Shekera O, Smirnov N, Maslyanitsyn I, Shigorin V, Yakimansky A, Tsukruk V. Synthesis and properties of hydroxylated core-fluorinated diamines and polyurethanes based on them with azobenzene nonlinear optical chromophores in the backbone. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.09.053] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Gunawidjaja R, Huang F, Gumenna M, Klimenko N, Nunnery GA, Shevchenko V, Tannenbaum R, Tsukruk VV. Bulk and surface assembly of branched amphiphilic polyhedral oligomer silsesquioxane compounds. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:1196-1209. [PMID: 19090655 DOI: 10.1021/la803182n] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
This study probes the behavior of two series of organic-functionalized core-shell silsesquioxane (POSS-M)p-(x/y) derivatives with various hydrophobic-hydrophilic terminal group compositions in the bulk state and within mono- and multilayered films at the air-water interface and on solid surface. POSS-M refers to mixed silsesquioxane cores, in contrast to the geometrically specific POSS compounds. It is composed of polyhedra, incompletely condensed polyhedra, ladder-type structures, linear structures, and all the possible combinations thereof and attracts great interest because of its facile preparation, low polydispersity, high yield, and low cost. The two series of (POSS-M)p-(x/y) molecules are different in hydrophobic-hydrophilic balance of their terminal groups, with x and y respectively referring to the molar percent of -OCONH-C(18)H(37) tails and -OH for p = 1 and the percent of -OCONH-C(18)H(37) tails and -OCO-C(6)H(4)COOH terminal groups for p = 2. In the bulk state, the presence of aromatic rings in (POSS-M)2-(x/y) series resulted in a lower symmetry crystal structure than the (POSS-M)1-(x/y) series. Moreover, the (POSS-M)p-(x/y) molecules that contain a sufficient amount of -OCONH-C(18)H(37) tails exhibit double endothermic transition, which attributed to the melting of alkyl chains followed by the melting of the unit cells of (POSS-M) cores. The surface morphologies for the various hydrophobic-hydrophilic combinations at surface pressure p = 0.5 mN/m are similar to that observed for the classical amphiphilic star polymers. However, at higher surface pressure (p > or = 5 mN/m), the POSS-M compounds with lower content of hydrophilic groups form a uniform monolayer.
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Affiliation(s)
- Ray Gunawidjaja
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, USA
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Ko H, Singamaneni S, Tsukruk VV. Nanostructured surfaces and assemblies as SERS media. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2008; 4:1576-99. [PMID: 18844309 DOI: 10.1002/smll.200800337] [Citation(s) in RCA: 437] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Metallic nanostructures attract much interest as an efficient media for surface-enhanced Raman scattering (SERS). Significant progress has been made on the synthesis of metal nanoparticles with various shapes, composition, and controlled plasmonic properties, all critical for an efficient SERS response. For practical applications, efficient strategies of assembling metal nanoparticles into organized nanostructures are paramount for the fabrication of reproducible, stable, and highly active SERS substrates. Recent progress in the synthesis of novel plasmonic nanoparticles, fabrication of highly ordered one-, two-, and three-dimensional SERS substrates, and some applications of corresponding SERS effects are discussed.
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Affiliation(s)
- Hyunhyub Ko
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
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Luzinov I, Minko S, Tsukruk VV. Responsive brush layers: from tailored gradients to reversibly assembled nanoparticles. SOFT MATTER 2008; 4:714-725. [PMID: 32907173 DOI: 10.1039/b718999k] [Citation(s) in RCA: 163] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We present a condensed overview of the recent developments of novel responsive thin polymer films from end-tethered chains (polymer brushes), which are different from conventional, uniform, and planar brush layers. For this discussion, we selected two types of recently introduced surface layers: binary brush layers with variable chemical composition forming a controllable gradient of composition and properties in a selected direction and brush layers either grafted directly to inorganic nanoparticles to form hybrid core-shell structures or combined with inorganic nanoparticles embedded into this layer. Unlike traditional brush layers, such a design brings a novel set of responsive surface properties allowing for capillary-driven microfluidic motion, combinatorial-like multiplexing response, reversible aggregation and dis-assembly of nanoparticles, fabrication of ultrahydrophobic coatings, and switchable mass transport across interfaces.
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Affiliation(s)
- Igor Luzinov
- School of Materials Science and Engineering and Center for Optical Materials Science and Engineering Technologies, Clemson University, Clemson, SC 29634, USA.
| | - Sergiy Minko
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY 13699, USA.
| | - Vladimir V Tsukruk
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.
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Buruiana EC, Buruiana T, Melinte V. Azo alkylammonium polyacrylates with one and two alkyl chains: Synthesis and properties. REACT FUNCT POLYM 2006. [DOI: 10.1016/j.reactfunctpolym.2006.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Holzmueller J, Genson KL, Park Y, Yoo YS, Park MH, Lee M, Tsukruk V. Amphiphilic treelike rods at interfaces: layered stems and circular aggregation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2005; 21:6392-8. [PMID: 15982046 DOI: 10.1021/la0504107] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Amphiphilic dendron-rod molecules with three hydrophilic poly(ethylene oxide) (PEO) branches attached to a hydrophobic octa-p-phenylene rod stem were investigated for their ability to form two-dimensional micellar structures on a solid surface. A treelike shape of the molecules was reported to be a major factor in the formation of nonplanar micellar structures in solution and in the bulk state (cylindrical and spherical). We observed that in these treelike amphiphilic molecules the hydrophilic terminated dendron branches assemble themselves in surface monolayers with the formation of two-dimensional layered or circular micellar structures. We suggested the formation of the planar ribbon-like structures with interdigitated layering within the loosely packed monolayers and circular, ringlike structures (2D circular aggregates) in the precollapsed state.
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Affiliation(s)
- Jason Holzmueller
- Materials Science and Engineering, Iowa State University, Ames, Iowa 50011, USA
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Luzinov I, Minko S, Tsukruk VV. Adaptive and responsive surfaces through controlled reorganization of interfacial polymer layers. Prog Polym Sci 2004. [DOI: 10.1016/j.progpolymsci.2004.03.001] [Citation(s) in RCA: 414] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Figueiredo P, Geppert S, Brandsch R, Bar G, Thomann R, Spontak RJ, Gronski W, Samlenski R, Müller-Buschbaum P. Ordering of Cylindrical Microdomains in Thin Films of Hybrid Isotropic/Liquid Crystalline Triblock Copolymers. Macromolecules 2000. [DOI: 10.1021/ma0011441] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- P. Figueiredo
- Institut für Makromolekulare Chemie, Universität Freiburg, D-79104 Freiburg, Germany
| | - S. Geppert
- Institut für Makromolekulare Chemie, Universität Freiburg, D-79104 Freiburg, Germany
| | - R. Brandsch
- Institut für Makromolekulare Chemie, Universität Freiburg, D-79104 Freiburg, Germany
| | - G. Bar
- Institut für Makromolekulare Chemie, Universität Freiburg, D-79104 Freiburg, Germany
| | - R. Thomann
- Institut für Makromolekulare Chemie, Universität Freiburg, D-79104 Freiburg, Germany
| | - R. J. Spontak
- Institut für Makromolekulare Chemie, Universität Freiburg, D-79104 Freiburg, Germany
| | - W. Gronski
- Institut für Makromolekulare Chemie, Universität Freiburg, D-79104 Freiburg, Germany
| | - R. Samlenski
- Fakultät für Physik, Universität Freiburg, D-79104 Freiburg, Germany
| | - P. Müller-Buschbaum
- Fakultät für Physik, Technische Universität München, D-85747 Garching, Germany
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Davidson P. Selected Topics in X-Ray Scattering by Liquid-Crystalline Polymers. LIQUID CRYSTALS II 1999. [DOI: 10.1007/3-540-68118-3_1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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