1
|
Puneet P, Kumar L, Singh S, Horechyy A, Srivastava R, Nandan B. Reversal of Handedness of Ionic liquid based Chiral Block Copolymers via Self-Assembly in Solution and Bulk Phase. Polym Chem 2022. [DOI: 10.1039/d2py00186a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polymerized ionic liquid (PIL) based ionic chiral block copolymers (BCPs*) were synthesized by functionalization of poly(4-vinyl pyridine) segment in poly(styrene)-block-poly(4-vinyl pyridine) (PS-b-P4VP) block copolymer. Owing to the ease of ion...
Collapse
|
2
|
Evans K, Xu T. Self-Assembly of Supramolecular Thin Films: Role of Small Molecule and Solvent Vapor Annealing. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b02460] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
| | - Ting Xu
- Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| |
Collapse
|
3
|
Encapsulation of inorganic nanoparticles into block copolymer micellar aggregates: Strategies and precise localization of nanoparticles. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.01.027] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
4
|
Kao J, Thorkelsson K, Bai P, Rancatore BJ, Xu T. Toward functional nanocomposites: taking the best of nanoparticles, polymers, and small molecules. Chem Soc Rev 2013. [DOI: 10.1039/c2cs35375j] [Citation(s) in RCA: 317] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
5
|
Ikkala O, Brinke GT. Towards Monodomains of Self-Organized Comb-Shaped Polymeric Supramolecules. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-775-p8.3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AbstractWe have previously shown that hierarchical self-organization is achieved upon physically bonding amphiphilic molecules to diblock copolymers. Here we discuss the effect of imposed shear flow to achieve overall alignment of the locally self-organized structures. We will first present shear aligned polystyrene-block-poly(4-vinyl pyridine) diblock copolymers (PS-b-P4VP), where pentadecyl phenol (PDP) has been hydrogen bonded to the pyridines. Depending on the selected molecular weights, eg. hexagonal arrangement of PS cylinders in the lamellar matrix of P4VP(PDP) can be obtained with high overall order of both structures. This is a template to obtain discrete PS nanorods, which have P4VP corona once the PDP molecules have been cleaved off by a solvent treatment. Selecting a relatively high molecular weight PS block and a short P4VP block leads to mesoporous materials with emptied cylinders with P4VP brushes at the walls. The glassy state of the PS matrix prevents the pores from collapsing. The pyridine groups of PS-b-P4VP can be protonated using eg. toluene sulphonic acid and the resulting polymeric salt has been complexed using PDP. The weight fractions have been selected so that the polyelectrolyte/amphiphile complex self-organizes into cylindrical domains with hexagonal packing. Shear alignment leads to high overall order. SAXS in combination with structural models suggests that within the cylinders there are parallel self-organized layers. The conductivity is anisotropic. We will also discuss dielectric reflectors based on self-organized block polyelectrolytes consisting PS-b-P4VP where DBSA has been complexed to P4VP. In this case, plasticization due to the oligomeric side chains promotes a facile structure formation at long periodicities in comparison to concepts based on eg. blends of high molecular weight polymers and block copolymers. Finally, plasticized comb-shaped supramolecules based on rigid conjugated poly(p-pyridine) are discussed. Even gentle shearing leads to highly aligned lamellar structures, which show efficient polarized photoluminescence.
Collapse
|
6
|
Liu J, Hameed N, Guo Q. Complexation and eutectic crystallization in poly(2-vinyl pyridine)-block-poly(ε-caprolactone) and pentadecylphenol mixtures. Eur Polym J 2010. [DOI: 10.1016/j.eurpolymj.2010.10.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
7
|
Mija A, Navard P, Peiti C, Babor D, Guigo N. Shear induced structuration of liquid crystalline epoxy thermosets. Eur Polym J 2010. [DOI: 10.1016/j.eurpolymj.2010.04.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
8
|
You LY, He YD, Zhao Y, Lu ZY. The complex influence of the oscillatory shear on the melt of linear diblock copolymers. J Chem Phys 2008; 129:204901. [PMID: 19045875 DOI: 10.1063/1.3021469] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Li-Yan You
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun, People's Republic of China
| | | | | | | |
Collapse
|
9
|
Iwan A, Sek D. Processible polyazomethines and polyketanils: From aerospace to light-emitting diodes and other advanced applications. Prog Polym Sci 2008. [DOI: 10.1016/j.progpolymsci.2007.09.005] [Citation(s) in RCA: 205] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
10
|
Bondzic S, Polushkin E, Schouten AJ, Ikkala O, ten Brinke G. The influence of grain size on the alignment of hexagonally ordered cylinders of self-assembled diblock copolymer-based supramolecules. POLYMER 2007. [DOI: 10.1016/j.polymer.2007.06.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
11
|
ten Brinke G, Ruokolainen J, Ikkala O. Supramolecular Materials Based On Hydrogen-Bonded Polymers. ADVANCES IN POLYMER SCIENCE 2007. [DOI: 10.1007/12_2006_111] [Citation(s) in RCA: 150] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
|
12
|
Laiho A, Ikkala O. A rheo-optical apparatus for real time kinetic studies on shear-induced alignment of self-assembled soft matter with small sample volumes. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2007; 78:015109. [PMID: 17503948 DOI: 10.1063/1.2409870] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
In soft materials, self-assembled nanoscale structures can allow new functionalities but a general problem is to align such local structures aiming at monodomain overall order. In order to achieve shear alignment in a controlled manner, a novel type of rheo-optical apparatus has here been developed that allows small sample volumes and in situ monitoring of the alignment process during the shear. Both the amplitude and orientation angles of low level linear birefringence and dichroism are measured while the sample is subjected to large amplitude oscillatory shear flow. The apparatus is based on a commercial rheometer where we have constructed a flow cell that consists of two quartz teeth. The lower tooth can be set in oscillatory motion whereas the upper one is connected to the force transducers of the rheometer. A custom made cylindrical oven allows the operation of the flow cell at elevated temperatures up to 200 degrees C. Only a small sample volume is needed (from 9 to 25 mm(3)), which makes the apparatus suitable especially for studying new materials which are usually obtainable only in small quantities. Using this apparatus the flow alignment kinetics of a lamellar polystyrene-b-polyisoprene diblock copolymer is studied during shear under two different conditions which lead to parallel and perpendicular alignment of the lamellae. The open device geometry allows even combined optical/x-ray in situ characterization of the alignment process by combining small-angle x-ray scattering using concepts shown by Polushkin et al. [Macromolecules 36, 1421 (2003)].
Collapse
Affiliation(s)
- Ari Laiho
- Department of Engineering Physics and Mathematics and Center for New Materials, Helsinki University of Technology, FI-02015 HUT, Espoo, Finland.
| | | |
Collapse
|
13
|
van Zoelen W, Alberda van Ekenstein G, Ikkala O, ten Brinke G. Incorporation of PPE in Lamellar Self-Assembled PS-b-P4VP(PDP) Supramolecules and PS-b-P4VP Diblock Copolymers. Macromolecules 2006. [DOI: 10.1021/ma060750e] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wendy van Zoelen
- Laboratory of Polymer Chemistry, Materials Science Centre, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, and Department of Engineering Physics and Mathematics and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT Espoo, Finland
| | - Gert Alberda van Ekenstein
- Laboratory of Polymer Chemistry, Materials Science Centre, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, and Department of Engineering Physics and Mathematics and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT Espoo, Finland
| | - Olli Ikkala
- Laboratory of Polymer Chemistry, Materials Science Centre, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, and Department of Engineering Physics and Mathematics and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT Espoo, Finland
| | - Gerrit ten Brinke
- Laboratory of Polymer Chemistry, Materials Science Centre, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, and Department of Engineering Physics and Mathematics and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT Espoo, Finland
| |
Collapse
|
14
|
Iwan A, Kaczmarczyk B, Kasperczyk J, Jurusik J, Janeczek H, Sek D, mazurak Z. Polyketanils. Polymers protonated with Bronsted acid. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/pola.21705] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
15
|
|
16
|
Iwan A, Sȩk D, Kasperczyk J. Characterization and Photoluminescence Study of Blue and Green Emitting Polyketanils and Their Blends. Macromolecules 2005. [DOI: 10.1021/ma050102f] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Agnieszka Iwan
- Centre of Polymer Chemistry, Polish Academy of Sciences, 34 M. Curie-Sklodowska Street, 41−819 Zabrze, Poland
| | - Danuta Sȩk
- Centre of Polymer Chemistry, Polish Academy of Sciences, 34 M. Curie-Sklodowska Street, 41−819 Zabrze, Poland
| | - Janusz Kasperczyk
- Centre of Polymer Chemistry, Polish Academy of Sciences, 34 M. Curie-Sklodowska Street, 41−819 Zabrze, Poland
| |
Collapse
|
17
|
Polushkin E, Bondzic S, de Wit J, Alberda van Ekenstein G, Dolbnya I, Bras W, Ikkala O, ten Brinke G. In-Situ SAXS Study on the Alignment of Ordered Systems of Comb-Shaped Supramolecules: A Shear-Induced Cylinder-to-Cylinder Transition. Macromolecules 2005. [DOI: 10.1021/ma048314k] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Evgeny Polushkin
- Laboratory of Polymer Chemistry, Materials Science Centre, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands; Dubble CRG/ESRF, Netherlands Organization for Scientific Research (NWO), c/o ESRF, BP 220, F-38043 Grenoble CEDEX, France; and Department of Engineering Physics and Mathematics, Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland
| | - Sasa Bondzic
- Laboratory of Polymer Chemistry, Materials Science Centre, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands; Dubble CRG/ESRF, Netherlands Organization for Scientific Research (NWO), c/o ESRF, BP 220, F-38043 Grenoble CEDEX, France; and Department of Engineering Physics and Mathematics, Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland
| | - Joost de Wit
- Laboratory of Polymer Chemistry, Materials Science Centre, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands; Dubble CRG/ESRF, Netherlands Organization for Scientific Research (NWO), c/o ESRF, BP 220, F-38043 Grenoble CEDEX, France; and Department of Engineering Physics and Mathematics, Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland
| | - Gert Alberda van Ekenstein
- Laboratory of Polymer Chemistry, Materials Science Centre, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands; Dubble CRG/ESRF, Netherlands Organization for Scientific Research (NWO), c/o ESRF, BP 220, F-38043 Grenoble CEDEX, France; and Department of Engineering Physics and Mathematics, Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland
| | - Igor Dolbnya
- Laboratory of Polymer Chemistry, Materials Science Centre, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands; Dubble CRG/ESRF, Netherlands Organization for Scientific Research (NWO), c/o ESRF, BP 220, F-38043 Grenoble CEDEX, France; and Department of Engineering Physics and Mathematics, Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland
| | - Wim Bras
- Laboratory of Polymer Chemistry, Materials Science Centre, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands; Dubble CRG/ESRF, Netherlands Organization for Scientific Research (NWO), c/o ESRF, BP 220, F-38043 Grenoble CEDEX, France; and Department of Engineering Physics and Mathematics, Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland
| | - Olli Ikkala
- Laboratory of Polymer Chemistry, Materials Science Centre, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands; Dubble CRG/ESRF, Netherlands Organization for Scientific Research (NWO), c/o ESRF, BP 220, F-38043 Grenoble CEDEX, France; and Department of Engineering Physics and Mathematics, Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland
| | - Gerrit ten Brinke
- Laboratory of Polymer Chemistry, Materials Science Centre, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands; Dubble CRG/ESRF, Netherlands Organization for Scientific Research (NWO), c/o ESRF, BP 220, F-38043 Grenoble CEDEX, France; and Department of Engineering Physics and Mathematics, Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland
| |
Collapse
|
18
|
Bondzic S, de Wit J, Polushkin E, Schouten AJ, ten Brinke G, Ruokolainen J, Ikkala O, Dolbnya I, Bras W. Self-Assembly of Supramolecules Consisting of Octyl Gallate Hydrogen Bonded to Polyisoprene-block-poly(vinylpyridine) Diblock Copolymers. Macromolecules 2004. [DOI: 10.1021/ma048913r] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
19
|
Tiitu M, Volk N, Torkkeli M, Serimaa R, ten Brinke G, Ikkala O. Cylindrical Self-Assembly and Flow Alignment of Comb-Shaped Supramolecules of Electrically Conducting Polyaniline. Macromolecules 2004. [DOI: 10.1021/ma0497409] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mari Tiitu
- Department of Engineering Physics and Mathematics, and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland, Laboratory of Polymer Chemistry, Materials Science Centre, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, and Department of Physical Sciences, University of Helsinki, P.O. Box 64, FIN-00014, Helsinki, Finland
| | - Nicole Volk
- Department of Engineering Physics and Mathematics, and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland, Laboratory of Polymer Chemistry, Materials Science Centre, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, and Department of Physical Sciences, University of Helsinki, P.O. Box 64, FIN-00014, Helsinki, Finland
| | - Mika Torkkeli
- Department of Engineering Physics and Mathematics, and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland, Laboratory of Polymer Chemistry, Materials Science Centre, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, and Department of Physical Sciences, University of Helsinki, P.O. Box 64, FIN-00014, Helsinki, Finland
| | - Ritva Serimaa
- Department of Engineering Physics and Mathematics, and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland, Laboratory of Polymer Chemistry, Materials Science Centre, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, and Department of Physical Sciences, University of Helsinki, P.O. Box 64, FIN-00014, Helsinki, Finland
| | - Gerrit ten Brinke
- Department of Engineering Physics and Mathematics, and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland, Laboratory of Polymer Chemistry, Materials Science Centre, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, and Department of Physical Sciences, University of Helsinki, P.O. Box 64, FIN-00014, Helsinki, Finland
| | - Olli Ikkala
- Department of Engineering Physics and Mathematics, and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland, Laboratory of Polymer Chemistry, Materials Science Centre, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, and Department of Physical Sciences, University of Helsinki, P.O. Box 64, FIN-00014, Helsinki, Finland
| |
Collapse
|
20
|
Alberda van Ekenstein G, Polushkin E, Nijland H, Ikkala O, ten Brinke G. Shear Alignment at Two Length Scales: Comb-Shaped Supramolecules Self-Organized as Cylinders-within-Lamellar Hierarchy. Macromolecules 2003. [DOI: 10.1021/ma034042u] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gert Alberda van Ekenstein
- Laboratory of Polymer Chemistry, Materials Science Centre, Dutch Polymer Institute, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, and Department of Engineering Physics and Mathematics and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland
| | - Evgeny Polushkin
- Laboratory of Polymer Chemistry, Materials Science Centre, Dutch Polymer Institute, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, and Department of Engineering Physics and Mathematics and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland
| | - Harry Nijland
- Laboratory of Polymer Chemistry, Materials Science Centre, Dutch Polymer Institute, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, and Department of Engineering Physics and Mathematics and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland
| | - Olli Ikkala
- Laboratory of Polymer Chemistry, Materials Science Centre, Dutch Polymer Institute, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, and Department of Engineering Physics and Mathematics and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland
| | - Gerrit ten Brinke
- Laboratory of Polymer Chemistry, Materials Science Centre, Dutch Polymer Institute, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, and Department of Engineering Physics and Mathematics and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland
| |
Collapse
|
21
|
Polushkin E, Alberda van Ekenstein G, Dolbnya I, Bras W, Ikkala O, ten Brinke G. In Situ Radial Small Angle Synchrotron X-ray Scattering Study of Shear-Induced Macroscopic Orientation of Hierarchically Structured Comb-Shaped Supramolecules. Macromolecules 2003. [DOI: 10.1021/ma0257548] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Evgeny Polushkin
- Laboratory of Polymer Chemistry, Materials Science Centre, Dutch Polymer Institute, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, NWO, DUBBLE CRG/ESRF, c/o BP 220 Grenoble F38043, France, and Department of Engineering Physics and Mathematics and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland
| | - Gert Alberda van Ekenstein
- Laboratory of Polymer Chemistry, Materials Science Centre, Dutch Polymer Institute, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, NWO, DUBBLE CRG/ESRF, c/o BP 220 Grenoble F38043, France, and Department of Engineering Physics and Mathematics and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland
| | - Igor Dolbnya
- Laboratory of Polymer Chemistry, Materials Science Centre, Dutch Polymer Institute, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, NWO, DUBBLE CRG/ESRF, c/o BP 220 Grenoble F38043, France, and Department of Engineering Physics and Mathematics and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland
| | - Wim Bras
- Laboratory of Polymer Chemistry, Materials Science Centre, Dutch Polymer Institute, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, NWO, DUBBLE CRG/ESRF, c/o BP 220 Grenoble F38043, France, and Department of Engineering Physics and Mathematics and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland
| | - Olli Ikkala
- Laboratory of Polymer Chemistry, Materials Science Centre, Dutch Polymer Institute, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, NWO, DUBBLE CRG/ESRF, c/o BP 220 Grenoble F38043, France, and Department of Engineering Physics and Mathematics and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland
| | - Gerrit ten Brinke
- Laboratory of Polymer Chemistry, Materials Science Centre, Dutch Polymer Institute, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, NWO, DUBBLE CRG/ESRF, c/o BP 220 Grenoble F38043, France, and Department of Engineering Physics and Mathematics and Center for New Materials, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT, Espoo, Finland
| |
Collapse
|
22
|
Thünemann AF, Kubowicz S, Burger C, Watson MD, Tchebotareva N, Müllen K. Alpha-helical-within-discotic columnar structures of a complex between poly(ethylene oxide)-block-poly(l-lysine) and a hexa-peri-hexabenzocoronene. J Am Chem Soc 2003; 125:352-6. [PMID: 12517145 DOI: 10.1021/ja0277632] [Citation(s) in RCA: 85] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Poly(ethylene oxide)-block-poly(l-lysine) (PEO-PLL) was complexed with an amphiphilic hexa-peri-hexabenzocoronene (HBC). This produced a thermotropic liquid crystalline material (PEO-PLL-HBC), which was investigated by FTIR spectroscopy and differential scanning calorimetry as well as by wide- and small-angle X-ray scattering. It was found that the poly(l-lysine) blocks form an alpha-helical secondary structure. Each helix is surrounded symmetrically by six discotic columns of HBC, which gives an alpha-helical-within-discotic column structural entity. The dense packing of these entities produces hexagonal sublattices (formed by the columns) in the frame of a two-dimensional hexagonal lattice (formed by the helices). An order-order transition from a columnar structure Col1 to Col2 was found at 54 degrees C. The unit cell constants are 5.75 nm (Col1) and 6.60 nm (Col2). The larger unit cell size of Col2 was explained by a higher intracolumnar order of the latter in which the packing distance of the disklike HBC cores is well-defined (0.353 nm). PEO-PLL-HBC combines essential features of liquid crystals with a basic structural element of proteins into a single material.
Collapse
|
23
|
Khalil H, Levon K. Shear-Induced Delocalization of Polarons in Polyaniline−Surfactant Complexes. Macromolecules 2002. [DOI: 10.1021/ma020146d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hanaa Khalil
- Polymer Research Institute, Polytechnic University, Six Metrotech Center, Brooklyn, New York 11201
| | - Kalle Levon
- Polymer Research Institute, Polytechnic University, Six Metrotech Center, Brooklyn, New York 11201
| |
Collapse
|