私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

相關鏈接
聯系方式
  • 通信地址:上海市梅隴路130號華東理工大學材料科學與工程學院
  • 郵編:200237
  • 電話:86-21-64252464
  • 傳真:
  • Email:liuxiaoyun@ecust.edu.cn
當前位置:> 首頁 > 論文著作 > 正文
Protonation effect of polybenzoxazole: experimental evidence
作者:Xiaohui Xu, Xiaoyun Liu, Qixin Zhuang, Zhewen Han,
關鍵字:polybenzoxazole,thiophene,photoluminescence,protonation effect
論文來源:期刊
具體來源:Journal of Macromolecular Science, Part A Pure and Applied Chemistry,2010, 47: 977-982
發表時間:2010年

In order to investigate the protonation effect of polybenzoxazole, a kind of soluble thiophene-based polybenzoxazole (PBOP-Th) is synthesized and characterized by the FTIR, 1H NMR, elemental analysis, thermogravimetric analysis (TGA), UV-Vis and photoluminescence (PL) spectra. Another polymer aminophenols -based polybenzoxazole (PBOP-Ph) was also synthesized as reference polymer. Unlike usual polybenzoxazoles such as poly(p-phenylenebenzobisoxazole) (PBO) and poly(2,5-thienylbenzobisoxazole) (PBOT), PBOP-Th and PBO-Ph has greatly enhanced solubility due to the introduction of isopropylidene and/or thiophene cycle. The effect of protonation on photophysical properties of polybenzoxazoles is studied by experiment method for the first time. The 30 nm red shift on the UV-Vis and PL spectra of polymer is observed in methanesulfonic acid (MSA) solution comparing with that of polymer in neutral N, N-dimethyl fomamide (DMF) solution, which is believed due to the protonation effect.

主站蜘蛛池模板: 邳州市| 渝北区| 鹤庆县| 鄂托克前旗| 富锦市| 西乌珠穆沁旗| 隆德县| 锡林郭勒盟| 黄石市| 湟中县| 筠连县| 桃江县| 永定县| 昔阳县| 庄浪县| 贺州市| 祁门县| 东港市| 博乐市| 四川省| 衡阳县| 宜春市| 长治县| 左贡县| 鹿邑县| 海伦市| 南昌县| 澄江县| 榆树市| 厦门市| 东台市| 乌兰县| 简阳市| 马鞍山市| 交口县| 昭觉县| 利辛县| 马公市| 娄底市| 澜沧| 兰考县|