14 research outputs found
Precise Synthesis of Poly(fluorene-2,7-vinylene)s Containing Oligo(thiophene)s at the Chain Ends: Unique Emission Properties by the End Functionalization
Defect-free Poly(9,9-bis(2-ethylhexyl)fluorene-2,7-vinylene) for Polymer Light-Emitting Diode (PLED) Devices
Synthesis of 4,7-Diphenyl-2,1,3-Benzothiadiazole-Based Copolymers and Their Photovoltaic Applications
Precise Synthesis of Poly(fluorene vinylene)s Capped with Chromophores: Efficient Fluorescent Polymers Modified by Conjugation Length and End-Groups
Synthesis of All-Trans High Molecular Weight Poly(N-alkylcarbazole-2,7-vinylene)s and Poly(9,9-dialkylfluorene-2,7-vinylene)s by Acyclic Diene Metathesis (ADMET) Polymerization Using Ruthenium-Carbene Complex Catalysts
Syntheses of poly(9,9-dialkylfluorene-2,7-vinylene)s (PFVs, alkyl=n-hexyl, n-octyl, 2́-ethylhexyl) and poly(N-alkylcarbazole-2,7-vinylene)s (PCVs, alkyl=n-octyl, 9́-heptadecanyl) by acyclic diene metathesis (ADMET) polymerization using Ru-carbene complexes have been explored. The polymerizations in the presence of Ru(CHPh)(Cl)2(IMesH 2)(PCy3) and Ru(CH-2-OiPr-C 6H4)(Cl)2(IMesH2) [Cy= cyclohexyl, IMesH2=1,3-bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene] afforded relatively high molecular weight PFVs, PCV (alkyl=9́-heptadecanyl) with unimodal molecular weight distributions, and the olefinic double bonds in the resultant polymers possessed highly trans regularity in all cases. The resultant defect-free PFVs possessed higher absolute quantum yields (φ=92-99%) than those reported previously, whereas no significant differences in the UV-vis and the fluorescent spectra (absorption bands,peak maxima) in the resultant PFVs were observed as an effect of alkyl side chain in the 9-position. The UV-vis and the fluorescence spectra in the PCV were similar to those in the PFVs, indicating that the replacement (from fluorene to carbazole) does not affect the observed spectra; the resultant PCV also possessed remarkable absolute quantum yield (φ=86%). © 2009 American Chemical Society.SCOPUS: ar.jinfo:eu-repo/semantics/publishe
Precise Synthesis of Amphiphilic Multiblock Copolymers by Combination of Acyclic Diene Metathesis (ADMET) Polymerization with Atom Transfer Radical Polymerization (ATRP) and Click Chemistry
Precise Synthesis of Poly(fluorene-2,7-vinylene)s Containing Oligo(thiophene)s at the Chain Ends: Unique Emission Properties by the End Functionalization
info:eu-repo/semantics/publishe