Jungo Seung Tae, Oh Seung-Hwan, Kim Hyun Bin, Jeun Joon-Pyo, Lee Bum-Jae, Kang Phil-Hyun
Korea Atomic Energy Research Institute, Advanced Radiation Technology institute, 29 Geumgu-gi Jeongup-si Jeollabuk-do, 580-185, Republic of Korea.
J Nanosci Nanotechnol. 2013 Nov;13(11):7358-64. doi: 10.1166/jnn.2013.7854.
In order to overcome the difficulty of dispersion and low conductivity in composite containing graphene, graphene oxide (GO) has been used instead of neat graphene. And the GO treated by radiation, could give improved conductivity of the GO-containing polymer composite. In this study, fluorene based water-soluble conjugated polymer (WPF-6-oxy-F) was introduced in GO solution to investigate the change of optical and electrical properties through radiation process. UV-Vis absorption of irradiated WPF-6-oxy-F-GO composite was red shifted and I(D)/I(G) ratio of Raman spectra decreased. XPS analysis showed that C-N bonds was formed after the irradiation and confirmed the increased bonds between the GO and the water-soluble conjugated polymer matrix. From the AFM and XPS analysis, it was found that the water-soluble conjugated polymer matrix was stacked between the modified GO in the morphology of irradiated WPF-6-oxy-F-GO composite was increased after gamma ray irradiation up to 10(-2) S/cm.
为了克服含石墨烯复合材料中分散困难和导电性低的问题，已使用氧化石墨烯（GO）代替纯石墨烯。并且经辐射处理的GO可提高含GO聚合物复合材料的导电性。在本研究中，将芴基水溶性共轭聚合物（WPF-6-oxy-F）引入GO溶液中，以研究辐射过程中光学和电学性质的变化。辐照后的WPF-6-oxy-F-GO复合材料的紫外可见吸收发生红移，拉曼光谱的I(D)/I(G)比值降低。XPS分析表明，辐照后形成了C-N键，并证实了GO与水溶性共轭聚合物基体之间键的增加。通过原子力显微镜（AFM）和XPS分析发现，水溶性共轭聚合物基体堆叠在改性的GO之间，γ射线辐照后，辐照后的WPF-6-oxy-F-GO复合材料的形态增加，电导率高达10(-2) S/cm。
