Biomedical Engineering Reference
In-Depth Information
Acid-functionalized CNTs
Polyacrylic acid-functionalized CNTs
AIBN, N
OH
Methacrylic acid
HCl
(NH
4
)
2
S
2
O
8
Vinyl group functionalized CNTs
Crude CNTs
SOCl
2
Acrylamide
(CNTs)
(CNTs)
(CNTs)
Imprinted/CNTs sorbent
Methacrylic acid
Extraction
Rebind
(Melamine)
Ethylene glycol dimethacrylate
2,2'-Azobisisobutyronitile
(CNTs)
(CNTs)
Figure 12.28
Schematic representation of the preparation of imprinted/MWCNTs
Sorbent [63].
Rebind
MWCNTs-AuNPs
Chitosan
Pre-polymer
Mixture
Remove
GCE
MWCNTs-AuNPs
Chitosan
Monomer
Tyramine
Figure 12.29
h e preparation of the molecularly imprinted tyramine-sensing electrode [64].
triethoxyphenylsilane as the functional monomers (Figure 12.29). h e
molecularly imprinted i lm displayed excellent selectivity towards tyra-
mine. Under the optimum conditions, the current response had a linear
relationship with the concentration of tyramine in the range of 1.08×10
-7
to 1×10
-5
mol/L, with a limit of detection 5.7×10
−8
mol/L. h e proposed
sensor exhibited excellent repeatability, which was better than the result
from previous literature. h e relative standard deviation (RSD) of the
repeated experiments for tyramine (5 mmol/L) was 7.0%. Determination
of tyramine in real samples showed good recovery.
h e author also reported a molecularly imprinted electrochemical sen-
sor based on gold electrode decorated by β-cyclodextrin (CD) incorpo-
rated MWCNTs, AuNPs-polyamide amine dendrimer nanocomposites
