期刊論文
| 學年 | 111 |
|---|---|
| 學期 | 2 |
| 出版（發表）日期 | 2023-07-06 |
| 作品名稱 | Creating liquid crystal microdroplet arrays for multiplexed sensing by spatially-controlled molecular patterning |
| 作品名稱（其他語言） | |
| 著者 | Chen, Chih-hsin |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | Sensors and Actuators B: Chemical 393, 134253 |
| 摘要 | In this study, we presented a spatially-controlled molecular patterning technique to prepare liquid crystal (LC) microdroplet arrays on glass substrates. This technique utilizes an oxygen plasma activated PDMS stamp to remove the pre-coated dimethyloctadecyl 3-(trimethoxysilyl) propyl ammonium chloride (DMOAP) molecules from glass substrates, producing a surface with complementary patterns and specific hydrophobicity. When LC molecules are introduced onto this produced molecular pattern, a LC microdroplet array with uniform droplet size and positional order is formed. By using the LC microdroplet array doped with a Hg2+ selective ligand, the lowest detectable concentration of Hg2+ is 200-fold lower than that of conventional LC-based sensors. In addition, multiplexed detection of Hg2+, Al3+, Fe3+ and pH value in real water samples with a high recovery rate (∼100%) was demonstrated by using the LC microdroplet arrays doped with different molecular probes. Due to the specific arrangement of the LC microdroplet arrays, the collected optical signal of LC microarrays can be transformed into numerical symbols. The developed spatially controlled molecular patterning technique could be used to prepare highly uniform LC microdroplet arrays with consistent optical signals, providing a simple method to prepare the LC-based sensing platforms with improved sensing performance. |
| 關鍵字 | Molecular patterning;Liquid crystal;Liquid crystal-based sensors;Microdroplets array;Metal ions detection |
| 語言 | en |
| ISSN | 1873-3077 |
| 期刊性質 | 國內 |
| 收錄於 | SCI |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | 否 |
| 國別 | NLD |
| 公開徵稿 | |
| 出版型式 | ,電子版,紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/124522 ) |