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利用STM研究苝四羧酸分子间的作用机制
引用本文:刘春华,李亿保,谢云志,李勋,范小林.利用STM研究苝四羧酸分子间的作用机制[J].赣南师范学院学报,2013(6):32-35.
作者姓名:刘春华  李亿保  谢云志  李勋  范小林
作者单位:赣南师范学院化学化工学院,江西赣州341000
基金项目:国家科技支撑“十一五”计划重点项目(2009BAI78B00);国家自然科学基金项目(21365003,21303024);江西省高校落地计划项目(KJLD13080);江西省教育厅一般项目(GJJ13664)
摘    要:通过对苝-3,4,9,10-四羧酸二酐(PTCDA)酸化,合成了苝-3,4,9,10-四羧酸(PTCA),采用红外、氢谱等方法对目标产物进行了表征.并且采用荧光光谱研究了产物的光学性质,结果表明:酸化后的PTCA表现出很强的荧光特性.为了进一步揭示分子作用机制,以高定向热解石墨HOPG(Highly Oriented Pyrolytic Graphite)为基底,利用扫描隧道显微镜(STM)研究了PTCA分子在固-液界面的二维(2D)自组装行为,实验结果表明了分子间的作用力来源于分子间的氢键和π-π堆积相互作用力.

关 键 词:苝-3  4  9  10-四羧酸  分子间作用力  扫描隧道显微镜(STM)

The Studies of Intermolecular Interactions for Perylene Tetracarboxylic Acid by Scanning Tunneling Microscopy
LIU Chunhua,LI Yibao,XIE Yunzhi,LI Xun,FAN Xiaolin.The Studies of Intermolecular Interactions for Perylene Tetracarboxylic Acid by Scanning Tunneling Microscopy[J].Journal of Gannan Teachers' College(Social Science(2)),2013(6):32-35.
Authors:LIU Chunhua  LI Yibao  XIE Yunzhi  LI Xun  FAN Xiaolin
Institution:LIU Chunhua LI Yibao XIE Yunzhi LI Xun FAN Xiaolin
Abstract:The perylene - 3,4,9,10 - tetracarboxylic acid (PTCA) has been synthesized from perylene - 3,4,9,10 - tetracarbox-ylie dianhydride ( PTCDA). The target product was characterized by IR and, ^1H NMR. The optical property of PTCA has been investi-gated by fluorescence spectra, which shows that PTCA presents strong fluorescence characteristics. In order to reveal the intermolecular interactions, the two-dimensional (2D) self-assembly behavior has been studied on highly oriented pyrolytic graphite (HOPG) sub-strate by scanning tunneling microscopy (STM) at the solid - liquid interface, which indicates the drive forces may be attributed to the intermolecular hydrogen - bonding and π - π stacking interactions.
Keywords:perylene - 3  4  9  10 - tetracarboxylic acid (PTCA)  intermolecular interactions  scanning tunneling microscopy(STM)
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