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Volumn 37, Issue 3, 2008, Pages 282-283

Temperature dependence of refractive index of films of well-defined linear and star-shaped polystyrenes

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EID: 42049116817     PISSN: 03667022     EISSN: None     Source Type: Journal    
DOI: 10.1246/cl.2008.282     Document Type: Article
Times cited : (10)

References (7)
  • 6
    • 42049123189 scopus 로고    scopus 로고
    • 2-), 1.84-2.05 (m, 30H, >CH-), 6.46-7.24 (m, 154H, aromatic H).
    • 2-), 1.84-2.05 (m, 30H, >CH-), 6.46-7.24 (m, 154H, aromatic H).
  • 7
    • 42049093940 scopus 로고    scopus 로고
    • A typical procedure for the synthesis of star-shaped polySTs was as follows (Run 6 in Table 1, The reaction of CRA-BP (0.022 g, 0.0125 mmol, CuBr (0.015g, 0.1 mmol, bipyridine (0.032 g, 0.2 mmol, and ST (1.04 g, 10 mmol) was carried out in DMF (1.2 mL) at 130 °C for 2 h in vacuo in a polymerization tube. After that, CHCl3 was added to the resulting mixture and the whole was washed with water several times. The organic layer was evaporated and poured into a large amount of n-hexane to precipitate the star-shaped polyST as a white solid. IR (film, cm-1, 1750 (v C=O ester, 1595 and 1490 (v C=C aromatic, 1HNMR (500 MHz, CDCl 3, TMS) δ 0.50-1.53 (m, 412H, CH3 of calixarene, C(O)-C(CH3)2, and -CH2, 1.86-2.06 (m, 176H, >CH, 4.50 (broad s, 4.0H, >CH- of calixarene, 6.46-7.24 m, 888H, aromatic H
    • 2-), 1.86-2.06 (m, 176H, >CH-), 4.50 (broad s, 4.0H, >CH- of calixarene), 6.46-7.24 (m, 888H, aromatic H).


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.