DPV
DPV
Potential / V
1.
CD
3D-G/HP-β-CD
HP-β-CD
L-Trp
L-Trp
D-Trp
D-Trp
18
12
DPV
I /
μA
6
0.4 0.5 0.6 0.7
E vs.SCE/V
0.8 0.9
L-cysteine, NH 3
. H 2 O
2.
D-Trp
D-Trp
L-Trp
L-Trp
0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
100
80
60
40
20
0
Current /
μA
Current /
μA
20
15
10
5
0
Potential / V
0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
MWCNTs
GO
PLA/MWCNTs
Cu-b-CD
Cu-b-CD/PLA/MWCNTs
self-assembly
Cu-b-CD
MWCNTs
L-Arg
electropolymerization
a
b
Fig. 3 The procedure for the preparation of Cu-β-CD/PLA/MWCNTs modified GCE (a) [21]
(Copyright 2019 Elsevier Ltd.); and the preparation of 3D-G/HP-β-CD and sensing of tryptophan isomers by an electrochemical strategy (b) [12]. (Copyright 2018 Royal Society of
Chemistry)
430
W. Liang and S. Shuang
DPV
Potential / V
1.
CD
3D-G/HP-β-CD
HP-β-CD
L-Trp
L-Trp
D-Trp
D-Trp
18
12
DPV
I /
μA
6
0.4 0.5 0.6 0.7
E vs.SCE/V
0.8 0.9
L-cysteine, NH 3
. H 2 O
2.
D-Trp
D-Trp
L-Trp
L-Trp
0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
100
80
60
40
20
0
Current /
μA
Current /
μA
20
15
10
5
0
Potential / V
0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
MWCNTs
GO
PLA/MWCNTs
Cu-b-CD
Cu-b-CD/PLA/MWCNTs
self-assembly
Cu-b-CD
MWCNTs
L-Arg
electropolymerization
a
b
Fig. 3 The procedure for the preparation of Cu-β-CD/PLA/MWCNTs modified GCE (a) [21]
(Copyright 2019 Elsevier Ltd.); and the preparation of 3D-G/HP-β-CD and sensing of tryptophan isomers by an electrochemical strategy (b) [12]. (Copyright 2018 Royal Society of
Chemistry)
430
W. Liang and S. Shuang