WEKO3
アイテム
クマリン類を含浸させたポルフィリン型湿度検出剤の耐光性評価
http://hdl.handle.net/10458/6043
http://hdl.handle.net/10458/60435ec418da-5b12-40c3-ab9b-e36f6b2b8ad4
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
本文 (1.2 MB)
|
|
| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2020-06-21 | |||||
| タイトル | ||||||
| タイトル | クマリン類を含浸させたポルフィリン型湿度検出剤の耐光性評価 | |||||
| 言語 | ja | |||||
| タイトル | ||||||
| タイトル | Evaluation of UV-Stability of Coumarins-Loaded Porphyrin-Type Humidity Indicator | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Humidity Indicator, Porphyrin, Coumarin, UV-Stability, Decoloration ratio | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | departmental bulletin paper | |||||
| その他（別言語等）のタイトル | ||||||
| その他のタイトル | クマリンルイ ヲ ガンシン サセタ ポルフィリンガタシツドケンシュツザイ ノ タイコウセイヒョウカ | |||||
| 著者 |
松本, 朋子
× 松本, 朋子× 菅野, 健人× 松本, 仁× 笛田, 佳之× 保田, 昌秀× 菅野, 健人× 笛田, 佳之 |
|||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Cobalt-free humidity detection indicator (HDI) for silica gel was developed using tetraphenylporphyrin (Tpp) which showed distinguishable color change depending on pH. The HDI was prepared by the mixing of dichloro(tetraphenylporphyrinato)phosphorus chloride (PTpp) and MgCl2 with SiO2 beads and the drying at 130 °C for 24 h. During the preparation, the PTpp was decomposed into the protonated Tpp (H2Tpp2+). The pH change arose from a proton release by the reaction of MgCl2 with silanol of the SiO2 under dry conditions and neutralization under humid conditions. The HDI showed green color due to H2Tpp2+ under dry conditions and orange color due to Tpp under humid conditions. However, the HDI took place partial decoloration on extended exposure to sunlight. Here, in order to prevent this decoloration of the HDI by sun light, UV-absorbents such as 7-methoxycoumarin (1a) and 6- methylcoumarin (1b) were loaded to the HDI. The HDIs with and without 1 were irradiated at 352 nm by black light under dry conditions. The irradiated HDI beads were analyzed by microscopic absorption spectra on a confocal laser scanning microscope. The absorbance (A) at 650 nm of the HDI was monitored. The light-protecting ability of UV-absorbent was evaluated by the slope (%R) for time-conversion plots of absorbance ratio (A/A0), where A0 denotes absorbance before irradiation. Since the %R values were minimum values at the loading of 0.100 wt% of 1a and 0.075 wt% of 1b, these were determined to be the optimized concentrations. Thus the loading of 1 was effective to prevent the color degradation. | |||||
| 言語 | en | |||||
| 書誌情報 |
ja : 宮崎大学工学部紀要 en : Memoirs of Faculty of Engineering, University of Miyazaki 巻 46, p. 7-11, 発行日 2017-07-31 |
|||||
| 出版者 | ||||||
| 出版者 | 宮崎大学工学部 | |||||
| 言語 | ja | |||||
| 出版者 | ||||||
| 出版者 | Faculty of Engineering, University of Miyazaki | |||||
| 言語 | en | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 05404924 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA00732558 | |||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
