The assembly behavior of both symmetrically substituted tetraphenylporphyrin (TPP) (sym-16OTPP, meso-tetra(3,5-dihexadecyloxyphenyl)) and asymmetrically substituted tetraphenylporphyrin (TPP) (asym-16OTPP, meso-tetra(3,4-dihexadecyloxyphenyl)) on a highly oriented pyrolytic graphite (HOPG) surface has been studied by a scanning probe microscope in this work. Scanning tunneling microscope results show that asym-16OTPP and sym-16OTPP form different arrangements on the graphite surface in a “face-on” manner due to different site substitution. The atomic force microscope detection further confirms the site effect on one-dimensional ordered assembling structures formed from sym- and asym-16OTPP on HOPG by adopting the “edge-on” mode.
本研究利用扫描探针显微镜研究了对称取代的
四苯基卟啉(
TPP)(sym-16O
TPP,中-四(3,5-
二十六烷氧基苯基))和不对称取代的
四苯基卟啉(
TPP)(asym-16O
TPP,中-四(3,4-
二十六烷氧基苯基))在高取向热解石墨(HO
PG)表面的组装行为。扫描隧道显微镜结果表明,asym-16O
TPP 和 sym-16O
TPP 由于位点置换不同,在石墨表面形成了不同的 "面朝上 "排列方式。原子力显微镜检测进一步证实了 sym-16O
TPP 和 asym-16O
TPP 在 HO
PG 上以 "边上 "方式形成的一维有序组装结构的位点效应。