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 Wysłany: Pi± 21:47, 11 Lut 2011 Temat postu: Synthesis and Characterization of New UV-curable L |
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Synthesis and Characterization of New UV-curable Liquid Crystalline Diacrylates
tasmesogenunit. AsshowninScheme1. Theacid1wasrefluxedwiththionylchloridefor6h. Thecrudeproductwasfiltratedandrecrystallizedfromd Ⅳ choloroforil1. Thenitwasesterifiedwithdioltoaffordester2. Thecompound2inTHFWaSstirredat0 ℃ whileacryloylchloridewasaddeddropwiseover1h. andfurtherstirredformore23hours. TheSOlutionwaswashedwitha5% NaHC03solutionandtheproduct3WaSpurifiedwithcolumnchromatography. 3band3chaveliquidcrystalrangefromDSCcurves (Table1,. Table1Thermaltransitionsofproduct3'E-mail: mcchen@mail.gic.ac.cnHongBoLIUetalScheme1. Cc. C ÷ 1H =). OOC. c-c. Island cH two 21 b.HO (CH2) DOH ,190-200 Q. X. Zhou, D. S. Lha, Polym., 1999,31, l189.J.WSchultz, R.P-Chartoff, Polymer, 1998,39,319. M. H. Litt, WWhang, K. Yen , X. J. Qian, Polym.Sci: PartA, 1993,31,183 F. S. Yen, L. L. Lin, J.L. Hong, Macmmo ~ cules, 1999,32,3068. Spectraldata: 3a, IR (KBr): 1735,1637,1602,1506 cm-; HNlVIR (400MHZ,uggs ireland, CDC13,UGG ブーツ, 6ppm): 4.53 (m, 8H), 5.85 (d, 2H,Mont Blanc pens, J = 10.4Hz), 6.14 ( m, 2H),tory burch shoes, 6.43 (d, 2H, J = 5.2nz), 7.32 (d, 4H, J = 8.8Hz) ,8.13-8 .33 (m, 8H); MS ( APED: chat, z603 (M + l {); 3b, IR (KBO: 1733,1637,1604,1502 crn.:} 【NMR (400MHz, CDC1, 6ppm): 1.69.1.88 (m, 8H) ,3.71-4 .37 (m, 8H), 5.822H, J = 9.8Hz), 6.14 (m, 2H), 6.41 (d, 2H, J - 5.6nz), 7.33 (d, 4H, J = 8.6HZ), 8.13 ・ 8.33 (m, 8H); MS (APCI): m/z6590 + H); 3c, IR (KBr): 1731,1638 , 1602,p90x calendar,1504 cm; HN (400MHz, CDC13, 6ppm) :1.35-1 .80 (m, 16H) ,3.62-4_34 (m, 8n), 5.87 (d, 2H, J = 10. 2Hz), 6.18 (m, 2n), 6.43 (d, 2H, J = 5.2Hz), 7.27 (d, 4H, J = 8.6Hz), 8.21 (m, 8H) ; MS (APED: m/z715fM + + H). Received6June, 2003 |
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