六氟苯的高压固体化学反应研究
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- 英文论文题名：High pressure studies of hexafluorobenzene
- 论文作者：汪雅洁 ; 郑海燕 ; 李阔 ; 董校 ; 孙江曼 ; 王丽娟
- 英文论文作者：Yajie Wang ; Haiyan Zheng ; Kuo Li ; Xiao Dong ; Jiangman Sun ; Lijuan Wang ; Center for High Pressure Science Technology and Advanced Research
- 年：2016
- 作者机构：北京高压科学研究中心;
- 论文关键词：高压有机固体化学 ; 高压诱导聚合 ; 六氟苯
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第十六分会：晶体工程
- 语种：中文
- 分类号：O631.5
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第十六分会 ; 晶体工程
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：160k
- 原文格式：D
- 会议级别：全国
摘要
高压是化学学科中一个新兴的研究领域。近年来,归功于高压技术的发展,科学家发现高压条件可以通过连续不问断地加压方式促使体系发生相变,分解,聚合,离子化,金属化,甚至改变元素种类。因此,高压技术可以为化学领域带来新奇特异的结构。芳香类化合物自其发现以来由于独特的离域结构和共轭性质一直受到了化学家的广泛重视。研究发现,在准静态高压条件下(>18 GPa),苯分子(C_6H_6)会发生以sp2不饱和碳碳键加成为主的聚合反应,生成具有规则有序的三维纳米线结构的聚合物。~([1],[2])本文通过拉曼和红外光谱等手段研究了苯的衍生物-六氟苯(C_6F_6)在高压下的变化过程(Fig.1)。结果显示,当压力高达21.5Pa时,六氟苯开始出现聚合的现象。在1050 cm-1处的新拉曼峰可推测源于苯环上的sp2碳向sp3的转变后产生的饱和碳碳单键。
High pressure allows producing new dense materials by directly and continuously tuning the spatial structure,which will promote phase transitions and even chemical reactions.In the past decade,compression-induced polymerization of benzene has been demonstrated,and subsequently crystalline one-dimensional sp~3 carbon threads were detected when slowly recovered to ambient pressure from ~20GPa.~([1],[2]) In this work,we are exploring the process of high-pressure reaction of hexafluorobenzene.The results provided by Raman and IR spectra indicated the polymerization of C_6F_6 when pressure up to 21.5 GPa.
High pressure allows producing new dense materials by directly and continuously tuning the spatial structure,which will promote phase transitions and even chemical reactions.In the past decade,compression-induced polymerization of benzene has been demonstrated,and subsequently crystalline one-dimensional sp~3 carbon threads were detected when slowly recovered to ambient pressure from ~20GPa.~([1],[2]) In this work,we are exploring the process of high-pressure reaction of hexafluorobenzene.The results provided by Raman and IR spectra indicated the polymerization of C_6F_6 when pressure up to 21.5 GPa.
引文
[1]Xiao-Dong Wen,?Roald Hoffmann,and N.W.Ashcroft JACS,2013,133,9023
[2]Thomas C.Fitzgibbons,Malcolm Guthrie,En-shi Xu,Vincent H.Crespi,Stephen K.Davidowski,George D.Cody,Nasim Alem and John V.Badding Nat.Mater,2014,14,43
[2]Thomas C.Fitzgibbons,Malcolm Guthrie,En-shi Xu,Vincent H.Crespi,Stephen K.Davidowski,George D.Cody,Nasim Alem and John V.Badding Nat.Mater,2014,14,43