Abstract
Breathalyzers estimate Blood Alcohol Content (BAC) from the concentration of ethanol in the breath. Breathalyzers are easy to use but are limited either by their high price and by environmental concerns, or by a short lifetime and the need for continuous recalibration. Here, we demonstrate a proof-of-concept disposable breathalyzer using an organic electrochemical transistor (OECT) modified with alcohol dehydrogenase (ADH) as the sensor. The OECT is made with the conducting polymer poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), and is printed on paper. ADH and its cofactor nicotinamide adenine dinucleotide (NAD +) are immobilized onto the OECT with an electrolyte gel. When the OECT-breathalyzer is exposed to ethanol vapor, the enzymatic reaction of ADH and ethanol transforms NAD + into NADH, which causes a decrease in the OECT source drain current. In this fashion, the OECT-breathalyzer easily detects ethanol in the breath equivalent to BAC from 0.01% to 0.2%. The use of a printed OECT may contribute to the development of breathalyzers that are disposable, ecofriendly, and integrated with wearable devices for real-time BAC monitoring.
| Original language | English |
|---|---|
| Article number | 27582 |
| Journal | Scientific Reports |
| Volume | 6 |
| DOIs | |
| Publication status | Published - 2016 Jun 13 |
| Externally published | Yes |
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ASJC Scopus subject areas
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Cite this
A Disposable paper breathalyzer with an alcohol sensing organic electrochemical transistor. / Bihar, Eloïse; Deng, Yingxin; Miyake, Takeo; Saadaoui, Mohamed; Malliaras, George G.; Rolandi, Marco.
In: Scientific Reports, Vol. 6, 27582, 13.06.2016.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A Disposable paper breathalyzer with an alcohol sensing organic electrochemical transistor
AU - Bihar, Eloïse
AU - Deng, Yingxin
AU - Miyake, Takeo
AU - Saadaoui, Mohamed
AU - Malliaras, George G.
AU - Rolandi, Marco
PY - 2016/6/13
Y1 - 2016/6/13
N2 - Breathalyzers estimate Blood Alcohol Content (BAC) from the concentration of ethanol in the breath. Breathalyzers are easy to use but are limited either by their high price and by environmental concerns, or by a short lifetime and the need for continuous recalibration. Here, we demonstrate a proof-of-concept disposable breathalyzer using an organic electrochemical transistor (OECT) modified with alcohol dehydrogenase (ADH) as the sensor. The OECT is made with the conducting polymer poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), and is printed on paper. ADH and its cofactor nicotinamide adenine dinucleotide (NAD +) are immobilized onto the OECT with an electrolyte gel. When the OECT-breathalyzer is exposed to ethanol vapor, the enzymatic reaction of ADH and ethanol transforms NAD + into NADH, which causes a decrease in the OECT source drain current. In this fashion, the OECT-breathalyzer easily detects ethanol in the breath equivalent to BAC from 0.01% to 0.2%. The use of a printed OECT may contribute to the development of breathalyzers that are disposable, ecofriendly, and integrated with wearable devices for real-time BAC monitoring.
AB - Breathalyzers estimate Blood Alcohol Content (BAC) from the concentration of ethanol in the breath. Breathalyzers are easy to use but are limited either by their high price and by environmental concerns, or by a short lifetime and the need for continuous recalibration. Here, we demonstrate a proof-of-concept disposable breathalyzer using an organic electrochemical transistor (OECT) modified with alcohol dehydrogenase (ADH) as the sensor. The OECT is made with the conducting polymer poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), and is printed on paper. ADH and its cofactor nicotinamide adenine dinucleotide (NAD +) are immobilized onto the OECT with an electrolyte gel. When the OECT-breathalyzer is exposed to ethanol vapor, the enzymatic reaction of ADH and ethanol transforms NAD + into NADH, which causes a decrease in the OECT source drain current. In this fashion, the OECT-breathalyzer easily detects ethanol in the breath equivalent to BAC from 0.01% to 0.2%. The use of a printed OECT may contribute to the development of breathalyzers that are disposable, ecofriendly, and integrated with wearable devices for real-time BAC monitoring.
UR - http://www.scopus.com/inward/record.url?scp=84974822356&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84974822356&partnerID=8YFLogxK
U2 - 10.1038/srep27582
DO - 10.1038/srep27582
M3 - Article
AN - SCOPUS:84974822356
VL - 6
JO - Scientific Reports
JF - Scientific Reports
SN - 2045-2322
M1 - 27582
ER -