Table 2 Functionalization strategies with various ligands or specific (bio) receptors in polydiacetylene (PDA)-based colorimetric sensors and their analytical performances
From: Surface functionalization strategies for polydiacetylene-based colorimetric sensors
Target analyte | Specific (bio)receptors | Detection technique | Sensing time (min) | Linear range | Limit of detection | References |
|---|---|---|---|---|---|---|
Salmonella Typhimurium bacterium | Aptamer | Colorimetric (CR% value) | 15 | 103–107 CFU mL−1 | 103 CFU mL−1 | |
Zn2+ | Aptamer | Colorimetric (RCS% value) | 240 | 0–1000 µM | 125 µM | |
E. coli O157:H7, S. Typhimurium, V. parahaemolyticus | Aptamer | Colorimetric (CR% value) | 30 | E. coli O157:H7 (10–107 CFU mL−1), S. Typhimurium (10─106 PFU mL−1), V. parahaemolyticus (10–106 PFU mL−1) | E. coli O157:H7 (39 CFU mL−1), S. Typhimurium (60 PFU mL−1), V. parahaemolyticus (60 PFU mL−1) | |
Bacillus thuringiensis HD-73 Spores | Aptamer | Colorimetric (CR% value) | 240 | 3 × 107–3 × 1011 PFU mL−1 | 3 × 107 CFU mL−1 | |
Thrombin | Aptamer | Colorimetric (CR% value) | 15 | 0–10 µM | 0.5 µM | |
Genes | Oligonucleotide | Colorimetric (CR% value) | NA | 0–20 µM | NA | |
Exosome | Antibody | Colorimetric (CR% value) and fluorescence | 30 | 3 × 107–1 × 1010 vesicles mL-1 | 3 × 108 vesicles mL−1 | |
Pb2+ or volatile organic compounds (VOCs) | Amino acids (histidine) | Colorimetric (CR% value) and fluorescence | 0.12 | 0–37 μM | Pb2+ (0.04 µM) | |
Trinitrotoluene (TNT) | Peptide | Colorimetric (CR% value) | NA | 5.2–33.6 µM | NA | |
Adenosine triphosphate (ATP) | Tripeptide-based Zn (II) complex | Colorimetric (absorbance) | NA | NA | NA | |
E. Coli | Glycolipids | Colorimetric (absorbance) | NA | NA | NA | |
Free fatty acid (FFA) | Phospholipid | Colorimetric (CR% value) | 1440 | 0–2.5 mg mL−1 | NA | |
Cd2+ | Ligand chelator | Colorimetric (absorbance) and fluorescence | 1 | NA | NA | |
Streptavidin (protein) | Biotin | Colorimetric (absorbance) and fluorescence | 1 | NA | NA |
