结合方式对氧化石墨烯/卟啉组装体结构及性能的影响
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摘要
通过π-π相互作用及氢键作用是对石墨烯进行非共价键功能化的重要手段。选择三种含不同官能团的卟啉分子,通过非共价相互作用将其与氧化石墨烯进行组装,研究不同结合方式对氧化石墨烯/卟啉结构和性能的影响。研究结果显示:不同结合方式对氧化石墨烯与卟啉分子之间作用力的大小和光生电子的传递具有决定性作用,二者之间相互作用越强,光电流越大。本研究旨在通过改变氧化石墨烯与卟啉分子之间的结合方式,达到对氧化石墨烯结构和物理化学性能调控的目的,为氧化石墨烯/卟啉组装体在光电化学、传感器等领域的进一步应用奠定较好的理论和实验基础。
Three kinds of graphene oxide(GO)–porphyrin composites were facilely assembled by means of non–covalent interaction. It was found that the functional groups linked on the peripheries of the porphyrins had an important influence on the combination mode of porphyrin and GO, and also the properties of GO–porphyrin composites. 5, 10, 15, 20–Tetrakis(4–hydroxyphenyl)porphyrin(THPP) was easy to react with GO and flat on the GO due to the strong hydrogen bond and π–π interaction between THPP and GO. Therefore, the photoelectronic activity of the GO–THPP was higher than those of the other porphyrins–GO. These results provided some hints for how to adjust the properties of the GO–porphyrin composites by modifying the combination mode between porphyrins and GO.
引文
[1]Ge,R.;Wang X.;Zhang C.;Kang S.;Qin,L.;Li,G.;Li,X.Colloids Surf.A,2015,483:45.

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