Polarized luminescence from self-assembled, aligned, and cleaved supramolecules of highly ordered rodlike polymers

Knaapila, Matti; Ikkala, Olli; Torkkeli, Mika; Jokela, K.; Serimaa, Ritva; Dolbnya, Igor P.; Bras, Wim; Brinke, G. ten; Horsburgh, L. E.; Pålsson, Lars‐Olof; Monkman, Andrew P.

doi:10.1063/1.1499222

Cited by 44 publications

(60 citation statements)

References 13 publications

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“…The aligned cast films remain optically anisotropic as revealed by polarized PL i.e. the alignment of the polymer chains is not lost upon cleavage (Knaapila et al, 2002b). For spin-coated films also CSA can be removed and the cleaved films ( Fig.…”

Section: Self-assembled and Cleaved Structure In Thin Filmsmentioning

confidence: 99%

“…In view of similarities with PPY, a monoclinic unit cell for the complex is suggested instead orthorhombic (Knaapila et al, 2002a). The main argument is that d 001 is ca.…”

Section: Aligned Self-assembled Structurementioning

confidence: 99%

“…1). After alignment in the LC state, the cleaved solid material retains high structural anisotropy with polarized photoluminescence (PL) and high PLQY of pristine polymer (Knaapila et al, 2002a). X-ray diffraction analysis in different stages is presented here.…”

Section: Introductionmentioning

confidence: 99%

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Diffraction analysis of highly ordered smectic supramolecules of conjugated rodlike polymers

Knaapila¹,

Torkkeli²,

Jokela³

et al. 2003

J Appl Cryst

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A small/wide-angle X-ray scattering and grazing incidence diffraction study of comb-shaped supramolecules of conjugated poly(2,5-pyridinediyl), acid dopant and hydrogen bonded amphiphilic side chains is reported. In solution, polymers are dissolved rodlike particles. When the side-chains are introduced, polymers self-assemble in hierarchic liquid crystals (LC). Diffraction patterns of aligned LC show h00, 020, and 004 reflections, and additional small-angle reflections along the polymer axis. A triangular correlation function indicating a very large correlation length is seen along the smectic axis. An aligned solid structure can be formed by cleaving side chains from the aligned LC.

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Section: Self-assembled and Cleaved Structure In Thin Filmsmentioning

confidence: 99%

“…In view of similarities with PPY, a monoclinic unit cell for the complex is suggested instead orthorhombic (Knaapila et al, 2002a). The main argument is that d 001 is ca.…”

Section: Aligned Self-assembled Structurementioning

confidence: 99%

See 1 more Smart Citation

Diffraction analysis of highly ordered smectic supramolecules of conjugated rodlike polymers

Knaapila¹,

Torkkeli²,

Jokela³

et al. 2003

J Appl Cryst

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“…With conjugated polymers, 19,20 the alignment results in anisotropy of their optical 12,13 and electronic 21 properties. The alignment of conjugated hairy rods in thin films can also result in completely new structural features 22 compared to the bulk.…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4][5][6][7] The concept allows self-organization and improved solubility even for polymers of rigid rodlike backbone. Unlike hairy-rod polymers with rodlike polymer backbone and covalently bonded flexible side chains, supramolecular hairy-rod polymers have the side groups connected to the backbone by physical bonds, [8][9][10][11][12][13][14] see Scheme 1. Theoretical treatments of the self-organized structure formation of hairy-rod polymers 15 and supramolecular hairy-rod polymers 16 have recently been presented.…”

Section: Introductionmentioning

confidence: 99%

Structure and Phase Equilibria of Polyelectrolytic Hairy-Rod Supramolecules in the Melt State

Knaapila¹,

Stepanyan²,

Monkman³

et al. 2003

J. Phys. Chem. B

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Structure and phase equilibria of polyelectrolytic hairy-rod supramolecules in the melt state Knaapila, M; Stepanyan, R; Horsburgh, LE; Monkman, AP; Serimaa, R; Ikkala, O; Subbotin, A; Torkkeli, M; ten Brinke, G; Horsburgh, Lockhart E. Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal. For technical reasons the number of authors shown on this cover page is limited to 10 maximum. FIN-02015 HUT, Finland ReceiVed: June 25, 2003; In Final Form: September 29, 2003 The structure formation and phase behavior of supramolecular hairy-rod polymers consisting of rodlike polymer chains with physically bonded side chains are investigated in the melt state using small-angle X-ray scattering. The supramolecules consist of poly(2,5-pyridinediyl), complexed by methanesulfonic acid to form poly(2,5-pyridinium methane sulfonates), to which octyl gallates are hydrogen bonded. These comblike supramolecules self-organize in rodlike assemblies in a square or oblique lattice or form lamellar structures. Moreover, nematic (solid) and macrophase separated structures are observed. These results are collected in a phase diagram in the high polymer fraction limit and they are in a clear qualitative resemblance with recent theoretical modeling. The differences and similarities between the experiments and theory are discussed.

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Comb‐Like Polymers

Wang

et al. 2017

Encyclopedia of Polymer Science and Technology

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Comb‐like polymers, as a kind of special graft polymers, have attracted interests due to their predetermined molecular structure and selected functionality. By controlling the structural composition of comb‐like polymers—such as the rigidity of polymer backbone, the length‐scale and the topological structure of the side chains—some interesting properties can be manipulated, and the transformation from passive to intelligent response is well approached. The incompatible polymeric main chain and side chain in comb‐like polymers contribute to novel hierarchical architectures and topologies, which exhibit various applications in textile, chemistry, proton conduction, waste treatment, and electronic fields. A deep understanding of the hierarchical structure and the assembled morphologies is helpful in achieving high‐performance functional materials used in the fabrication of microelectronic devices, microchip cooling, and so on. Herein, we review the recent progress on comb‐like polymers and highlight their fabrication, structure, and property, especially from the viewpoint of crystallization, phase transition, and thermal behavior.

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Polarized luminescence from self-assembled, aligned, and cleaved supramolecules of highly ordered rodlike polymers

Cited by 44 publications

References 13 publications

Diffraction analysis of highly ordered smectic supramolecules of conjugated rodlike polymers

Diffraction analysis of highly ordered smectic supramolecules of conjugated rodlike polymers

Structure and Phase Equilibria of Polyelectrolytic Hairy-Rod Supramolecules in the Melt State

Comb‐Like Polymers

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