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https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/123406
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| Title: | N-Dodecyl-ethane-1,2-diamine as amphiphilic molecular probes in liquid crystal-based sensors for detecting aluminum ions |
| Authors: | Ho, Tsung Yang;Hsu, Chia-Wei;Chen, Chih-Hsin |
| Keywords: | Liquid crystal;Aluminum ions detection;Amphiphilic molecules |
| Date: | 2023-02-02 |
| Issue Date: | 2023-04-28 17:58:28 (UTC+8) |
| Publisher: | Elsevier |
| Abstract: | Conventional liquid crystal (LC)-based sensors for detecting metal ions usually apply a molecular probe for target recognition and an amphiphilic molecule for LC alignment, which makes LC-based sensors require additional pre-mixing procedures such that they are not suitable for in-situ monitoring. In this work, we applied an amphiphilic molecule, i.e., N-dodecyl-ethane-1,2-diamine (NN12C) as the molecular probes in LC-based sensors for detecting aluminum ions (Al3+). At the LC/aqueous interface, NN12C is protonated and aligns at the interface to cause the homeotropic orientation of LC. The binding of Al3+ and the amino groups of NN12C changed the amphiphilicity of NN12C and disrupted the orientation of LC, resulting into a dark-to-bright transition of LC images. Based on this mechanism, the lowest detectable concentration of Al3+ was 8 μM with the detection range from 8 to 25 μM. Moreover, we demonstrated that this sensor can detect aluminum ions in drinking water. This work provides a strategy to develop the LC-based sensors to detect metal ions with simplified operating procedures. |
| Relation: | Microchemical Journal 2023 188, 108472 |
| DOI: | 10.1016/j.microc.2023.108472 |
| Appears in Collections: | [化學學系暨研究所] 期刊論文
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