Formation of a Perylenetetracarboxylic Diimide Network Film by Post Electrochemical Treatment

详细信息    查看全文

• 作者：Suk-ho Kim ; Heung Cho Ko ; Bongjin Moon ; Hoosung Lee
• 刊名：Langmuir
• 出版年：2006
• 出版时间：October 24, 2006
• 年：2006
• 卷：22
• 期：22
• 页码：9431 - 9435
• 全文大小：320K
• 年卷期：v.22,no.22(October 24, 2006)
• ISSN：1520-5827

文摘

Perylenetetracarboxylic diimide (PDI) derivatives bearing two or four peripheral pyrrole pendants (PDI-nPy, n =2 or 4) are cross-linkable materials by electro/phototreatment. In this paper, we introduce a new posttreatment techniqueto produce an insoluble film. Unlike the common solution-phase electrochemical deposition, we first spin-coatedPDI-nPy on an electrode and then electrotreated the coated surface in a monomer-free electrolyte solution. This methodgives the film a smooth surface with no granules, while the common method induces a rough film with a lot of granules.The post electrochemical treatment also provides a merit of higher resolution in a patterning process on a specificmetal electrode. As one of the applications, we carried out an electrochromic study on the posttreated PDI-4Py film.It turned purple (_max = 590 nm) and sky blue (_max = 797 nm) at 0 and -1.9 V vs Ag/Ag⁺, respectively. We believethis method will broaden the patterning concept with the desired film morphology and resolution using PDI on aspecific electrode.