Preparation of Poly(1,5 diamino naphthalene) Nanobelts/Nanodiscs Through a 'Hard-Soft Combined Templates' Approach

摘要

This is the first report on the preparation of nanobeltsanodiscs of poly(1,5-diamino naphthalene) (PDAN-P) in bulk quantities through a "hard-soft combined templates" approach. PDAN was nanostructured within the channels of MCM-41 (hard template) in the presence of β-napthalene sulfonic acid (β-NSA) (soft template) and further used as the seed for the bulk preparation of pure PDAN nanobeltsanodiscs of PDAN (PDAN-P). Field emision scanning electron microscope image reveals that a typical nanobelt has a length of ～3 μm, with a uniform breadth of ～150 nm and a thickness of ～50 nm. UV-Visible spectrum reveals that the electronic features of PDAN-P are different from PDAN prepared by conventional method (PDAN-C). The electrochemical and interfacial characteristics of PDAN-P were evaluated by cyclic voltammetry and impedance spectroscopy and compared with PDAN-C. The current density characteristics of ITO/PDAN-P and ITO/PDAN-C were also compared. The potential for the onset of current and the current densities beyond the onset potentials were higher at ITO/PDAN-P than for ITO/PDAN-C. Results from electrochemical imedance spectroscopy informed that the ac conductivity of PDAN-P is higher than PDAN-C. Thus, PDAN-P exhibits distinctly different electronic and electrochemical characteristics as compared to PDAN-C.