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大四寫(xiě)論文金蟲(chóng) (正式寫(xiě)手)
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Techniques The apparatus used for the polycondensation was a Samsung microwave oven(2450 MHz, 900 W). Proton nuclear magnetic resonance (1H-NMR, 500 MHz) spectra were recorded in DMSO-d6 solution using a Bruker (Germany) Avance 500 instrument at Sharif University of Technology, Tehran, Iran. Proton resonances are designated as singlet (s), doublet (d), doublet of doublet (dd), and multiplet (m). FT-IR spectra were recorded on (Jasco-680, Japan) spectrophotometer. The spectra of solids were obtained using KBr pellets. The vibrational transition frequencies are reported in wavenumbers (cm-1). Band intensities are assigned as weak (w), medium (m), strong (s), and broad (br). Inherent viscosities were measured by using a Cannon–Fenske Routine Viscometer (Germany) at concentration of 0.5 g dL-1 at 25 C. Specific rotations were measured by a Jasco Polarimeter (Japan). Quantitative solubility was determined using 0.05 g of the polymer in 1 mL of solvent. Thermal gravimetric analysis (TGA) data for polymers were taken on V5.1A DuPont 2000 at a heating rate of 10 C min-1 under N2 atmosphere. Differential scanning calorimetry (DSC) data were recorded on a DSC-PL-1200 instrument at a heating rate of 20 C min-1 under nitrogen atmosphere by the Research Institute of Polymer and Petrochemical of Iran. Glass transition temperatures (Tg) were read at the middle of the transition in the heat capacity taken from the heating DSC traces. Elemental analyses were also performed by Tarbit Moalem University,Tehran, Iran. Monomer synthesis 5-[3-Phenyl-2-(9,10-dihydro-9,10-ethanoanthracene-11,12-dicarboximido)propanoylamino] isophthalic acid (8) was prepared (Scheme 1) according to our previous works [10, 20]. Polymer synthesis Method I: polymerization of diacid 8 with diamines 9a–9g in [1,3-(pr)2im]Br/TPP as condensing agent |
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jiangguofeng
金蟲(chóng) (著名寫(xiě)手)
- 翻譯EPI: 248
- 應(yīng)助: 41 (小學(xué)生)
- 金幣: 25886.4
- 紅花: 25
- 帖子: 2100
- 在線: 567.1小時(shí)
- 蟲(chóng)號(hào): 72410
- 注冊(cè): 2005-06-04
- 專(zhuān)業(yè): 合成藥物化學(xué)
【答案】應(yīng)助回帖
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大四寫(xiě)論文: 金幣+50, 翻譯EPI+1, ★★★很有幫助 2015-04-07 08:26:12
大四寫(xiě)論文: 金幣+50, 翻譯EPI+1, ★★★很有幫助 2015-04-07 08:26:12
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技術(shù)裝備 縮聚反應(yīng)所用的裝置是三星牌微波爐( 2450 MHz, 900 W)。質(zhì)子核磁共振(1H NMR, 500 MHz)波譜是在二甲亞砜- d6溶液中使用Avance 500核磁共振儀布魯克公司（德國(guó)）在伊朗,德黑蘭,Sharif技術(shù)大學(xué)記錄的。 質(zhì)子共振指定為單峰(s)、雙峰(d)、雙重雙峰和多重峰(m)。FT-IR光譜是用(日本, Jasco - 680）分光光度計(jì)記錄的。固體光譜是使用KBr壓片法獲得的r。振動(dòng)躍遷頻率是以波數(shù)（cm-1）報(bào)告的。譜帶強(qiáng)度是以弱(w)、中(m)、強(qiáng)(s)和寬( br)的方式分配的。特性粘度是通過(guò)使用坎農(nóng)-芬斯克常規(guī)粘度儀（德國(guó)）于0.5 g dL-dL-1的濃度和25℃溫度下測(cè)定的。比旋光率是通過(guò)Jasco偏振光儀（日本）測(cè)定的。定量溶解度是通過(guò)使用0.05 g聚合物在1mL溶劑中進(jìn)行測(cè)定的。聚合物的熱解重量分析(TGA)數(shù)據(jù)是通過(guò)使用V5.1A杜邦2000，以10℃min-1的加熱速度，在N2氛圍下采取的。差示掃描量熱法( DSC)數(shù)據(jù)是由伊朗的聚合物和石油化學(xué)品研究所通過(guò)使用DSC-PL-1200儀器以20℃min-1的加熱速度，在氮?dú)夥諊杏涗浀�。玻璃態(tài)轉(zhuǎn)化溫度(Tg)是在取自熱DSC曲線的熱容量中轉(zhuǎn)移的中間段讀取的。元素分析也是由伊朗,德黑蘭的Tarbit Moalem大學(xué)完成的。 單體的合成 5-[3-苯基-2-(9,10-二氫-9,10-橋亞乙基-蒽-11,12-二甲酰亞胺基)丙酰氨基]間苯二甲酸(8)是依據(jù)我們以前的研究[10, 20]而制備的(圖1)。聚合物的合成方法I :二酸8與二胺9a-9g在[ 1,3-(pr)2im]Br/TPP冷凝劑中進(jìn)行聚合 |
2樓2015-04-06 20:22:19
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