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http://hdl.handle.net/10119/15727
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| Title: | Multilayer Growth of Porphyrin-Based Polyurea Thin Film Using Solution-Based Molecular Layer Deposition Technique |
| Authors: | Uddin, S. M. Nizam
Nagao, Yuki |
| Keywords: | Layer by layer
Covalent network
Relative humidity dependence
Urea coupling reaction |
| Issue Date: | 2017-10-12 |
| Publisher: | American Chemical Society |
| Magazine name: | Langmuir |
| Volume: | 33 |
| Number: | 44 |
| Start page: | 12777 |
| End page: | 12784 |
| DOI: | 10.1021/acs.langmuir.7b03450 |
| Abstract: | Controllable synthesis of organic thin film materials on solid surfaces is a challenging issue in the research field of surface science as it is affected by several physical parameters. In this work, we demonstrated a solution-based molecular layer deposition (MLD) approach to prepare porphyrin-based covalent organic molecular networks on a 3-aminopropyl trimethoxysilane (APTMS) modified substrate surface using the urea coupling reaction between 1,4-phenylene diisocyanate (1,4-PDI) and 5,10,15,20-tetrakis-(4-aminophenyl) porphyrin (H_2TAPP) at room temperature (22 ± 2 ºC). Multilayer growth was investigated under different relative humidity (RH) conditions of the reaction chamber. Sequential molecular growth at low relative humidity (≤10% RH) was observed using UV-vis absorption spectroscopy and atomic force microscopy (AFM). The high-RH condition shows limited film growth. Infrared spectroscopy (IR) and X-ray photoelectron spectroscopy (XPS) revealed the polyurea bond formation in sequential multilayer thin films, demonstrating that stepwise multilayer film growth was achieved using the urea coupling reaction. |
| Rights: | S. M. Nizam Uddin and Yuki Nagao, Langmuir, 2017, 33(44), pp.12777-12784. This document is the unedited author's version of a Submitted Work that was subsequently accepted for publication in Langmuir, copyright (c) American Chemical Society after peer review. To access the final edited and published work, see http://dx.doi.org/10.1021/acs.langmuir.7b03450 |
| URI: | http://hdl.handle.net/10119/15727 |
| Material Type: | author |
| Appears in Collections: | c10-1. 雑誌掲載論文 (Journal Articles)
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