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Volumn 42, Issue 14, 2009, Pages 5104-5111

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

Author keywords

[No Author keywords available]

Indexed keywords

ABSORPTION BAND; ACYCLIC DIENE METATHESIS; ALKYL SIDE CHAINS; CARBENE COMPLEXES; CYCLOHEXYL; DEFECT-FREE; DOUBLE BONDS; FLUORENE; FLUORESCENCE SPECTRA; FLUORESCENT SPECTRA; HIGH MOLECULAR WEIGHT; PEAK MAXIMA; UNIMODAL;

EID: 67651115542     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma900775x     Document Type: Article
Times cited : (50)

References (74)
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    • n=2.7 (at 45°C, initial monomer concentration= 50 ìmol/mL), Mn=7.35×104, Mwn=2.79 (at 55°C, initial monomer concentration=50 μmol/mL)].
    • n= 2.2 (at 50°C, initial monomer concentration=270 μmol/mL), Ru- (A) 40 equiv].The results also indicate that certain optimizations are necessary for obtainment of high molecular weight polymers. The results also clearly suggest that continuous removl of ethylene (and initial monomer concentration, amount of ruthenium catalyst) should be the key for obtainment of high molecular weight polymer, as we previously emphasized,8,10,11 and the effect of solvent may not be very important for obtainment of the high molecular weight polymers (if the resultant polymers are soluble).
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    • 1HNMRspectra (in CDCl3 at 25 °C)for poly(1)s prepared by ADEMT and by precursor method (purchased from Aldrich) are shown in the Supporting Information
    • 1HNMRspectra (in CDCl3 at 25 °C)for poly(1)s prepared by ADEMT and by precursor method (purchased from Aldrich) are shown in the Supporting Information.
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    • Absolute quantum efficiencies were measured by using a Hamamatsu C9920-02 (Hamamatsu Photonics K.K.), and these values were estimated by using a calibrated integration sphere at an exciting wavelength of 400 nm.
    • Absolute quantum efficiencies were measured by using a Hamamatsu C9920-02 (Hamamatsu Photonics K.K.), and these values were estimated by using a calibrated integration sphere at an exciting wavelength of 400 nm.
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* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.