TABLE 19.2

A Summary of Some Conducting Polymer-Based Sensors for Intrinsic Biogenic Molecules

Polymer used

Bioreceptor

Analyte

Sensor type

LOD (M)

Ref.

PEDOT

Fe2O3NPs/rGO/PEDOT

Acetylcholine

Electrochemical sensor

4.0 × 10−9

[ 29]

PEDOT

PEDOT/CNT

Dopamine

Electrochemical sensor

4.0 × 10−9

[ 30]

Ppy

MADH-PPy

Histamine

Electrochemical sensor

2.5 × 10−5

[ 31]

PANi

CeO2–PANI/DAO/nafion

Histamine

Electrochemical sensor

4.87 × 10−5

[ 32]

PEDOT

PEDOT–βCD

Creatinine

Electrochemical sensor

5.0 × 10−5

[ 35]

Poly(SNS-Aniline)

SNS-Aniline/DAFc

Urea

Electrochemical sensor

1.2 × 10−5

[ 37]

P(DTP(aryl)aniline)

P(DTP(aryl)aniline)/ChOx

Cholesterol

Electrochemical sensor

2.7 × 10−7

[ 39]

Ppy

BOx/GONP@Ppy/FTO

Bilirubin

Electrochemical sensor

1.0 × 10−10

[ 40]

PPy-PPa copolymer

PPy-PPa/ G-CNTs

Protein antigen (cTnI)

Electrochemical sensor

1.0 pg/mL∗

[ 41]

Notes: Ppy: polypyrrole, MADH: methylamine dehydrogenase, DAO: diamine oxidase, PANI: polyaniline, βCD: β-cyclodextrin, SNS-Aniline: 4-(2,5-Di(thiophen-2-yl)-1H-pyrrol-

1-yl)aniline, DAFc: di-amino-ferrocene, P(DTP(aryl)aniline): 4-(4H-dithienol[3,2-b: 2’,3’- d]pyrrole-4)aniline polymer, ChOx: cholesterol oxidase, BOx: bilirubin oxidase,

FTO: fluorine doped tin oxide, GONP: graphene oxide nanoparticle, PPy-PPa: poly(pyrrole-co-pyrrolepropylic acid) copolymer, G-CNTs: graphene-carbon nanotubes. ∗

LOD presented in g/mL due to nature of analyte.

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Bioelectronics