中文摘要：

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.

英文摘要：

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.