1
|
Changez M, Anwar MF, Balushi RA, Lee JS. Solution-State Long-Range Molecular Ordering in Poly(3-hexylthiophene). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:11028-11033. [PMID: 32867477 DOI: 10.1021/acs.langmuir.0c01876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A blend of poly(3-hexylthiophene) (P3HT) and poly(n-hexyl isocyanate-block-2-vinylpyridine) (PHIC-b-P2VP) in a common solvent shows the formation of long-range (micrometer-scale) nanowires of P3HT through hydrophobic interactions between the hexyl arms of P3HT and PHIC in a parallel way, which increase the planarity that leads to the generation of vibration bands with a lower free exciton bandwidth (W = 67 meV) in the solution state, which is further decreased to 9 meV after 48 h annealing of the blend film. The resulting nanowires of the P3HT show a 100-fold increase in current in comparison to pristine P3HT.
Collapse
Affiliation(s)
- Mohammad Changez
- Department of Basic Sciences, College of Applied and Health Sciences, A' Sharqiyah University, Ibra 400, Oman
| | - Mohammad Faiyaz Anwar
- Department of Pathology, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Rayya Al Balushi
- Department of Basic Sciences, College of Applied and Health Sciences, A' Sharqiyah University, Ibra 400, Oman
| | - Jae-Suk Lee
- Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Korea
| |
Collapse
|
2
|
Schöbel J, Hils C, Weckwerth A, Schlenk M, Bojer C, Stuart MCA, Breu J, Förster S, Greiner A, Karg M, Schmalz H. Strategies for the selective loading of patchy worm-like micelles with functional nanoparticles. NANOSCALE 2018; 10:18257-18268. [PMID: 30238948 DOI: 10.1039/c8nr05935g] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Block copolymer self-assembly in solution paves the way for the construction of well-defined compartmentalized nanostructures. These are excellent templates for the incorporation and stabilisation of nanoparticles (NPs), giving rise to highly relevant applications in the field of catalysis or sensing. However, the regio-selective incorporation of NPs in specific compartments is still an issue, especially concerning the loading with different NP types. Using crystallisation-driven self-assembly (CDSA), functional worm-like crystalline-core micelles (wCCMs) with a tailor-made, nanometre-sized patchy corona were prepared as versatile templates for the incorporation and stabilisation of metal and metal oxide NPs. Different strategies, like ligand exchange or co-precipitation of polymer stabilised NPs with one surface patch, were developed that allow the incorporation of NPs in specific regions of the patchy wCCM corona. Independent of the NP type and the incorporation method, the NPs showed no tendency for agglomeration and were fixed within the corona patches of the wCCMs. The binary loading of patchy micelles with metal and metal oxide NPs was realised by combining different loading strategies, yielding hybrids with homogeneously dispersed NPs guided by the patchy structure of the template.
Collapse
Affiliation(s)
- Judith Schöbel
- Makromolekulare Chemie II, Universität Bayreuth, 95440 Bayreuth, Germany.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
3
|
Adams F, Machat MR, Altenbuchner PT, Ehrmaier J, Pöthig A, Karsili TNV, Rieger B. Toolbox of Nonmetallocene Lanthanides: Multifunctional Catalysts in Group-Transfer Polymerization. Inorg Chem 2017; 56:9754-9764. [DOI: 10.1021/acs.inorgchem.7b01261] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Friederike Adams
- WACKER-Lehrstuhl für Makromolekulare Chemie, §Chair of Theoretical Chemistry, and ‡Department Chemie & Catalysis Research Center, Technische Universität München, 85748 Garching bei München, Germany
| | - Martin R. Machat
- WACKER-Lehrstuhl für Makromolekulare Chemie, §Chair of Theoretical Chemistry, and ‡Department Chemie & Catalysis Research Center, Technische Universität München, 85748 Garching bei München, Germany
| | - Peter T. Altenbuchner
- WACKER-Lehrstuhl für Makromolekulare Chemie, §Chair of Theoretical Chemistry, and ‡Department Chemie & Catalysis Research Center, Technische Universität München, 85748 Garching bei München, Germany
| | - Johannes Ehrmaier
- WACKER-Lehrstuhl für Makromolekulare Chemie, §Chair of Theoretical Chemistry, and ‡Department Chemie & Catalysis Research Center, Technische Universität München, 85748 Garching bei München, Germany
| | - Alexander Pöthig
- WACKER-Lehrstuhl für Makromolekulare Chemie, §Chair of Theoretical Chemistry, and ‡Department Chemie & Catalysis Research Center, Technische Universität München, 85748 Garching bei München, Germany
| | - Tolga N. V. Karsili
- WACKER-Lehrstuhl für Makromolekulare Chemie, §Chair of Theoretical Chemistry, and ‡Department Chemie & Catalysis Research Center, Technische Universität München, 85748 Garching bei München, Germany
| | - Bernhard Rieger
- WACKER-Lehrstuhl für Makromolekulare Chemie, §Chair of Theoretical Chemistry, and ‡Department Chemie & Catalysis Research Center, Technische Universität München, 85748 Garching bei München, Germany
| |
Collapse
|
4
|
Kronast A, Reiter D, Altenbuchner PT, Vagin SI, Rieger B. 2-Methoxyethylamino-bis(phenolate)yttrium Catalysts for the Synthesis of Highly Isotactic Poly(2-vinylpyridine) by Rare-Earth Metal-Mediated Group Transfer Polymerization. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01179] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Alexander Kronast
- WACKER-Lehrstuhl für
Makromolekulare Chemie, Technische Universität München, Lichtenbergstraße
4, 85748 Garching
b. München, Germany
| | - Dominik Reiter
- WACKER-Lehrstuhl für
Makromolekulare Chemie, Technische Universität München, Lichtenbergstraße
4, 85748 Garching
b. München, Germany
| | - Peter T. Altenbuchner
- WACKER-Lehrstuhl für
Makromolekulare Chemie, Technische Universität München, Lichtenbergstraße
4, 85748 Garching
b. München, Germany
| | - Sergei I. Vagin
- WACKER-Lehrstuhl für
Makromolekulare Chemie, Technische Universität München, Lichtenbergstraße
4, 85748 Garching
b. München, Germany
| | - Bernhard Rieger
- WACKER-Lehrstuhl für
Makromolekulare Chemie, Technische Universität München, Lichtenbergstraße
4, 85748 Garching
b. München, Germany
| |
Collapse
|
5
|
Zepon KM, Otsuka I, Bouilhac C, Muniz EC, Soldi V, Borsali R. Self-Assembly of Oligosaccharide-b-PMMA Block Copolymer Systems: Glyco-Nanoparticles and Their Degradation under UV Exposure. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:4538-4545. [PMID: 27054350 DOI: 10.1021/acs.langmuir.6b00212] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This paper discusses the self-assembly of oligosaccharide-containing block copolymer and the use of ultraviolet (UV) to obtain nanoporous glyco-nanoparticles by photodegradation of the synthetic polymer block. Those glyco-nanoparticles consisting of oligosaccharide-based shell and a photodegradable core domain were obtained from the self-assembly of maltoheptaose-block-poly(methyl methacrylate) (MH-b-PMMA48) using the nanoprecipitation protocol. MH-b-PMMA48 self-assembled into well-defined spherical micelles (major compound) with a hydrodynamic radius (Rh) of ca. 10 nm and also into large compound micellar aggregates (minor compound) with an Rh of ca. 65 nm. The oligosaccharide shells of these glyco-nanoparticles were cross-linked through the Michael-type addition of divinyl sulfone under dilute conditions to minimize the intermicellar cross-linking. The core domain photodegradation of the cross-linked glyco-nanoparticles was induced under exposure to 254 nm UV radiation, resulting in porous glyco-nanoparticles with an Rh of ca. 44 nm. The morphology of the cross-linked shell and the core photodegradation of these glyco-nanoparticles were characterized using static light scattering, dynamic light scattering, Fourier transform infrared spectroscopy, proton nuclear magnetic resonance, field-emission gun-scanning electron microscopy, and transmission electron microscopy. The innovative aspect of this approach concerns the fact that after removing the PMMA domains the porous nanoparticles are mostly composed of biocompatible and nontoxic oligosaccharides.
Collapse
Affiliation(s)
- Karine M Zepon
- University Grenoble Alpes , CERMAV, F-38000 Grenoble, France
- CNRS , CERMAV, F-38000 Grenoble, France
- Departamento de Química, Universidade Federal de Santa Catarina , CEP - 88040-900, Florianópolis, Santa Catarina, Brazil
| | - Issei Otsuka
- University Grenoble Alpes , CERMAV, F-38000 Grenoble, France
- CNRS , CERMAV, F-38000 Grenoble, France
| | - Cécile Bouilhac
- Institut Charles Gerhardt Montpellier UMR5253 CNRS-UM-ENSCM, Equipe Ingénierie et Architectures Macromoléculaires, Université Montpellier , Bâtiment 17-cc1702, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France
| | - Edvani C Muniz
- Grupo de Materiais Poliméricos e Compósitos, GMPC-Departamento de Química, Universidade Estadual de Maringá , CEP 87020-900, Maringá, Paraná, Brazil
| | - Valdir Soldi
- Departamento de Química, Universidade Federal de Santa Catarina , CEP - 88040-900, Florianópolis, Santa Catarina, Brazil
| | - Redouane Borsali
- University Grenoble Alpes , CERMAV, F-38000 Grenoble, France
- CNRS , CERMAV, F-38000 Grenoble, France
| |
Collapse
|
6
|
Altenbuchner PT, Adams F, Kronast A, Herdtweck E, Pöthig A, Rieger B. Stereospecific catalytic precision polymerization of 2-vinylpyridine via rare earth metal-mediated group transfer polymerization with 2-methoxyethylamino-bis(phenolate)-yttrium complexes. Polym Chem 2015. [DOI: 10.1039/c5py01146a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
C
1-Symmetric 2-methoxyethylamino-bis(phenolate)-yttrium complexes for the stereospecific polymerization of 2-vinylpyridine.
Collapse
Affiliation(s)
- P. T. Altenbuchner
- WACKER-Lehrstuhl für Makromolekulare Chemie
- Technische Universität München
- 85748 Garching bei München
- Germany
| | - F. Adams
- WACKER-Lehrstuhl für Makromolekulare Chemie
- Technische Universität München
- 85748 Garching bei München
- Germany
| | - A. Kronast
- WACKER-Lehrstuhl für Makromolekulare Chemie
- Technische Universität München
- 85748 Garching bei München
- Germany
| | - E. Herdtweck
- Chair of Inorganic Chemistry/Molecular Catalysis
- Catalysis Research Center
- Technische Universität München
- 85748 Garching bei München
- Germany
| | - A. Pöthig
- Chair of Inorganic Chemistry/Molecular Catalysis
- Catalysis Research Center
- Technische Universität München
- 85748 Garching bei München
- Germany
| | - B. Rieger
- WACKER-Lehrstuhl für Makromolekulare Chemie
- Technische Universität München
- 85748 Garching bei München
- Germany
| |
Collapse
|
7
|
Kang NG, Changez M, Kim MJ, Lee JS. Effect of Biphenyl Spacers on the Anionic Polymerization of 2-(4′-Vinylbiphenyl-4-yl)pyridine. Macromolecules 2014. [DOI: 10.1021/ma500974m] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Nam-Goo Kang
- Department of Chemistry, University of Tennessee, 1420 Circle
Dr., Knoxville, Tennessee 37996, United States
| | - Mohammad Changez
- School
of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu,
Gwangju 500-712, Korea
| | - Myung-Jin Kim
- School
of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu,
Gwangju 500-712, Korea
| | - Jae-Suk Lee
- School
of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu,
Gwangju 500-712, Korea
| |
Collapse
|