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https://irlib.pccu.edu.tw/handle/987654321/35940
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| 題名: | Flexibility and electrical and humidity-sensing properties of N-substituted pyrrole derivatives and composite films of Au nanoparticles/N-substituted pyrrole derivatives |
| 作者: | Su, PG (Su, Pi-Guey)
Chiu, SR (Chiu, Sih-Ru)
LinDepartment, YT (LinDepartment, Yu-Te) |
| 貢獻者: | 化學系 |
| 關鍵詞: | Humidity sensor
N-substituted pyrrole derivatives
Gold nanoparticles
Composite |
| 日期: | 2016-03 |
| 上傳時間: | 2017-04-17 10:40:20 (UTC+8) |
| 摘要: | Novel impedance-type humidity sensors were fabricated by coating 2,5-dimethy1-1-phenyl-1H-pyrrole (1), 1-(4-aminopheny1)-2,5-dimethy1-1H-pyrrole (2), 1-(4-nitropheny1)-2,5-dimethy1-1H-pyrrole (3) and gold nanoparticles/compound 3 (AuNPs/compound 3) composite films on alumina and plastic substrates. Compound 1, compound 2, compound 3 and AuNPs/compound 3 composite films were analyzed using atomic force microscopy (AFM) and UV-vis spectroscopy. The effects of the substituents on the benzene ring of compound 1 on the electrical and humidity-sensing properties of the compound 1 film were studied. The humidity sensor that was fabricated with the compound 3 exhibited high sensitivity but a higher resistance at low humidity than that which was made of the compound I. The effects of the AuNPs on the electrical and humidity sensing properties of the AuNPs/compound 3 composite film on a PET substrate were investigated. The sensor that was made of the AuNPs/compound 3 composite film exhibited high sensitivity, good linearity, small hysteresis, high flexibility, a short response/recovery time, a weak dependence on temperature and high long-term stability. The linearity of the humidity sensor depended on the applied frequency. The sensing mechanism of the AuNPs/compound 3 composite film was elucidated with reference to impedance plots. (C) 2015 Elsevier B.V. All rights reserved. |
| 關聯: | SENSORS AND ACTUATORS B-CHEMICAL 卷: 224 頁碼: 833-840 |
| 顯示於類別: | [化學系所] 期刊論文
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