Synthesis and characterization of side-chain liquid-crystalline block-copolymers containing laterally attached photoluminescent quinquephenyl units via ATRP

Wang, Ling Yung; Li, Kuang Chieh; Lin, Hong‐Cheu

doi:10.1016/j.polymer.2009.10.071

Cited by 7 publications

(4 citation statements)

References 84 publications

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“…Many polymers containing poly(3-hexylthiophene), polyfluorene and other segments based on fully conjugated polymer blocks or pendants have been synthesized using NMP 193,[221][222][223]225,226 and ATRP. [227][228][229][230][231][232][233][234] Advantages of RAFT polymerization over the ''competing technologies'' of ATRP and NMP are the absence of metal ions in the polymerization process (required for ATRP), a generally more convenient polymerization process and compatibility with a wider range of monomer types and polymerization conditions. [4][5][6][7][8][9][10][11] Advantages seen for ATRP and NMP are the absence of sulfur compounds from the polymerization medium and the polymer product and that no additional initiator is required for polymerization.…”

Section: Block Copolymers By Non-raft Radical Polymerizationmentioning

confidence: 99%

Functional polymers for optoelectronic applications by RAFT polymerization

et al. 2011

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This review focuses on the approaches to the synthesis of functional polymers for optoelectronic applications that make use of radical polymerization with reversible addition-fragmentation chain transfer (RAFT) polymerization. Optoelectronic applications include hole/electron transport in photovoltaics (OPVs), light emitting diodes (OLEDs and PLEDs), thin-film transistors (TFTs), sensors, light-harvesting and related applications. In this context we consider metallopolymers (polymers that incorporate a metal or possess metal ligating functionality as a pendant group to the backbone, as an end-group or as a connecting group), organic semiconductors (polymers with an organic semiconductor moiety either as a block or as a pendant group), and various surfaces, nanoparticles and quantum dots that are formed by RAFT polymerization or where a RAFTsynthesized polymer forms an integral part of the process or structure.

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Section: Block Copolymers By Non-raft Radical Polymerizationmentioning

confidence: 99%

Functional polymers for optoelectronic applications by RAFT polymerization

et al. 2011

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“…The synthetic route for the macromer DM1 is outlined in Scheme 1. ATRP has been proven to be a successful polymerization technique to prepare polymers for a variety of monomers with narrow polydispersity [10,19,20]. All polymers were prepared using CuBr, PMDETA, and EBriB as the catalyst, ligand and initiator respectively in anisole and the reaction conditions were all kept at 90°C for 7 h. The relative molecular weights and polydispersity index (PDI) values of the polymers were determined by GPC.…”

Section: Synthesis and Characterizationmentioning

confidence: 99%

“…Atom transfer radical polymerization (ATRP) is one of the most efficient, nitroxide-mediated and stable controlled/livingradical polymerization methods that have been used recently [8][9][10][11]. This method has been chosen in this study because it can be easily applied to a wide number of monomers which lead to polymer architectures with narrow polydispersities resembling living nature [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Naphthalene group containing side chain liquid crystalline polymers and their rheological behavior

et al. 2013

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A new polymerizable macromer containing naphthalene ring in the mesogen, 4-butoxyphenyl 6-(6-(methacryloyloxy)hexyl)-2-naphthoate, has been synthesized. The chemical structure of the macromer was confirmed by FTIR, 1 H NMR, 13 C NMR and liquid crystal behavior was confirmed by polarized optical microscope (POM) and small angle X-ray (SAXS). Results from the POM showed nematic phase appearing at 101.9°C and smectic phase at 83.8°C while differential scanning calorimetry (DSC) suggested presence of a wide mesophase range between 50 and 104°C. This macromer was used to synthesize a series of side-chain liquid crystal polymers (SCLCPs) with different molecular weights having narrow polydispersity (PDI) values via living atom transfer radical polymerization (ATRP). The mesomorphic properties of the liquid crystal macromer and polymers were characterized by POM, DSC and SAXS. In addition, the frequency behavior of the polymers in a smectic phase is characterized by the storage modulus, G', leveling off, at low frequencies. Complex viscosities, |η*| of the smectic phase exhibited a shear thinning behavior over the shear rates investigated.

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“…The synthesis of well-defined amphiphilic functionalized macromolecular coupling agent has attracted a great deal of interest due to its improved properties in adhesion, compatibility with other polymer materials [1][2][3][4][5] . Many techniques have been used to synthesize the amphiphilic functionalized block copolymers, one of the most important techniques is atom transfer radical polymerization, because this method has been developed to obtain narrow polydispersity index, architectures, functionalities and well-defined compositions [6][7][8] . However, there are a few limitations for normal atom transfer radical polymerization.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of St-AN-(KH-570) Block Macromolecular Coupling Agent Copolymers

Cheng¹,

Song²,

Miao³

et al. 2013

Asian J. Chem.

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A new well-defined amphiphilic St-AN-(KH-570) block macromolecular coupling agent copolymers was successfully synthesized via free radical polymerization with styrene (St), acrylonitrile (AN) and γ-methacryloxypropyl trimethoxy silane (KH-570) in dimethylbenzene. The compositions of copolymers were confirmed by Fourier transform infrared spectroscopy and proton nuclear magnetic resonance. Thermal analysis by differential scanning calorimetry indicated that glass transition temperature (Tg) of macromolecular coupling agent is much lower than polystyrene and polyacrylonitrile. The synthesis possessed the number average molecular weights (Mn) of 1.05 × 10 4 by gel permeation chromatography with broad polydispersity index value of 2.48.

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Synthesis and characterization of side-chain liquid-crystalline block-copolymers containing laterally attached photoluminescent quinquephenyl units via ATRP

Cited by 7 publications

References 84 publications

Functional polymers for optoelectronic applications by RAFT polymerization

Functional polymers for optoelectronic applications by RAFT polymerization

Naphthalene group containing side chain liquid crystalline polymers and their rheological behavior

Synthesis and Characterization of St-AN-(KH-570) Block Macromolecular Coupling Agent Copolymers

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