Modification of Cotton Fabric with Molecularly Imprinted Polymer-Coated Carbon Dots as a Sensor for 17 α-methyltestosterone.
In: Molecules (Basel, Switzerland), Jg. 27 (2022-10-26), Heft 21
Online
academicJournal
Zugriff:
Molecularly imprinted polymers@ethylenediamine-modified carbon dots grafted on cotton fabrics (MIPs@EDA-CDs/CF) and smartphone-based fluorescence image analysis were proposed and used for the first time for the detection of 17 α-methyltestosterone (MT). The EDA-CDs were synthesized and grafted on cotton fabric before coating with the MIPs. The MIPs were synthesized using the MT as a template molecule, methacrylic acid (MAA) as a functional monomer, ethylene glycol dimethacrylate (EGDMA) as a cross-linker, and azobisisobutyronitrile (AIBN) as an initiator. The MIPs@EDA-CDs/CF were characterized using FTIR, SEM-EDS, and RGB fluorescence imaging. The fluorescence images were also taken using a smartphone and the ImageJ program was used for RGB measurement. The Δ red intensity was linearly proportional to MT concentration in the range of 100 to 1000 μg/L (R 2 = 0.999) with a detection limit of 44.4 μg/L and quantification limit of 134 μg/L. The MIPs@EDA-CDs/CF could be stored at 4 °C for a few weeks and could be reused twice. The proposed method could apply for the specific determination of MT in water and sediment samples along with satisfactory recoveries of 96-104% and an acceptable relative standard deviation of 1-6% at the ppb level.
Titel: |
Modification of Cotton Fabric with Molecularly Imprinted Polymer-Coated Carbon Dots as a Sensor for 17 α-methyltestosterone.
|
---|---|
Autor/in / Beteiligte Person: | Lim, M ; Thanasupsin, SP ; Thongkon, N |
Link: | |
Zeitschrift: | Molecules (Basel, Switzerland), Jg. 27 (2022-10-26), Heft 21 |
Veröffentlichung: | Basel, Switzerland : MDPI, c1995-, 2022 |
Medientyp: | academicJournal |
ISSN: | 1420-3049 (electronic) |
DOI: | 10.3390/molecules27217257 |
Schlagwort: |
|
Sonstiges: |
|