TY - JOUR
T1 - Specially Designed Polyaniline/Polypyrrole Ink for a Fully Printed Highly Sensitive pH Microsensor
AU - Zea, Miguel
AU - Texidó, Robert
AU - Villa, Rosa
AU - Borrós, Salvador
AU - Gabriel, Gemma
N1 - Funding Information:
M.Z. acknowledges his financial support covered by Fundación Centro de Estudios Interdisciplinarios Básicos y Aplicados (CEIBA)-Gobernación de Bolivar (Colombia). This work was supported by the Spanish government-funded projects RTI2018-096786-B-I00 and RTI2018-102070-B-C21 by Ministerio de Ciencia, Innovación y Universidades (MINECO/FEDER, EU). The authors also thank the support of the Generalitat de Catalunya to 2017-SGR-988 and to 2017-SGR 1559 and the SU-8 Unit of the CIBER in Bioengineering, Biomaterials, and Nanomedicine (CIBER-BBN) at the IMB-CNM (CSIC) of ICTS “NANBIOSIS.” This work has also made use of the Spanish ICTS Network MICRONANOFABS partially supported by MEINCOM.
Publisher Copyright:
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PY - 2021/7/21
Y1 - 2021/7/21
N2 - pH sensing for healthcare applications requires sensors with mechanically stable materials of high sensitivity and high reproducibility combined with low-cost fabrication technologies. This work proposes a fully printed pH sensor based on a specially formulated conducting polymer deposited on a microelectrode in a flexible substrate. A formulation, which combined polyaniline (PANI) and polypyrrole (PPy) with integrated polyelectrolyte poly(sodium 4-styrenesulfonate) (PSS), was specially prepared to be printed by inkjet printing (IJP). The sensor has good sensitivity in the physiological region (pH 7-7.5) key for the healthcare biosensor. This mixture printed over a commercial gold ink, which has a singular chemical functionalization with phthalocyanine (Pc), increased the sensor sensitivity, showing an excellent reproducibility with a linear super-Nernstian response (81.2 ± 0.5 mV/pH unit) in a wide pH range (pH 3-10). This new ink together with the IJP low-cost technique opens new opportunities for pH sensing in the healthcare field with a single device, which is disposable, highly sensitive, and stable in the whole pH range.
AB - pH sensing for healthcare applications requires sensors with mechanically stable materials of high sensitivity and high reproducibility combined with low-cost fabrication technologies. This work proposes a fully printed pH sensor based on a specially formulated conducting polymer deposited on a microelectrode in a flexible substrate. A formulation, which combined polyaniline (PANI) and polypyrrole (PPy) with integrated polyelectrolyte poly(sodium 4-styrenesulfonate) (PSS), was specially prepared to be printed by inkjet printing (IJP). The sensor has good sensitivity in the physiological region (pH 7-7.5) key for the healthcare biosensor. This mixture printed over a commercial gold ink, which has a singular chemical functionalization with phthalocyanine (Pc), increased the sensor sensitivity, showing an excellent reproducibility with a linear super-Nernstian response (81.2 ± 0.5 mV/pH unit) in a wide pH range (pH 3-10). This new ink together with the IJP low-cost technique opens new opportunities for pH sensing in the healthcare field with a single device, which is disposable, highly sensitive, and stable in the whole pH range.
KW - inkjet printing
KW - pH sensor
KW - polyaniline
KW - polymeric ink
KW - polypyrrole
UR - http://www.scopus.com/inward/record.url?scp=85111067315&partnerID=8YFLogxK
UR - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=pure_univeritat_ramon_llull&SrcAuth=WosAPI&KeyUT=WOS:000677540900089&DestLinkType=FullRecord&DestApp=WOS_CPL
UR - http://hdl.handle.net/20.500.14342/4407
U2 - 10.1021/acsami.1c08043
DO - 10.1021/acsami.1c08043
M3 - Article
C2 - 34227800
AN - SCOPUS:85111067315
SN - 1944-8244
VL - 13
SP - 33524
EP - 33535
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 28
ER -