TY - JOUR
T1 - Polydiacetylene Capacitive Artificial Nose
AU - Rao, V. Kesava
AU - Teradal, Nagappa L.
AU - Jelinek, Raz
N1 - Funding Information: We are grateful to the Pazi Foundation for generous financial support. We are grateful to Prof. Yuri Feldman and Dr. Anna Greenbaum from Department of Applied Physics, The Hebrew University of Jerusalem, for their assistance with the dielectric spectroscopy experiments. We also thankful to Dr. Zeiri Leila for help with Raman analysis. Publisher Copyright: Copyright © 2019 American Chemical Society.
PY - 2019/1/30
Y1 - 2019/1/30
N2 - Polydiacetylenes are a class of conjugated polymers exhibiting unique color and fluorescence properties and employed as useful sensing vehicles. Here we demonstrate for the first time that the dielectric properties of polydiacetylenes can be exploited for vapor sensing. Specifically, electrodes coated with polydiacetylenes, embedded within a porous polyvinylpyrrolidone (PVP) matrix, exhibit significant capacitance transformations upon exposure to different vapors. The capacitive response of the polydiacetylene/PVP films depended upon both the structures of the diacetylene monomer and the extent of ultraviolet irradiation (i.e., polymerization), underscoring a unique sensing mechanism affected by conjugation, structure, and dielectric properties of the polydiacetylene/polymer matrix. Importantly, the variability of polydiacetylene structures allows vapor identification through an array-based pattern recognition (i.e., artificial nose). This study opens new avenues for applications of polydiacetylene systems, particularly pointing to their dielectric properties as powerful sensing determinants.
AB - Polydiacetylenes are a class of conjugated polymers exhibiting unique color and fluorescence properties and employed as useful sensing vehicles. Here we demonstrate for the first time that the dielectric properties of polydiacetylenes can be exploited for vapor sensing. Specifically, electrodes coated with polydiacetylenes, embedded within a porous polyvinylpyrrolidone (PVP) matrix, exhibit significant capacitance transformations upon exposure to different vapors. The capacitive response of the polydiacetylene/PVP films depended upon both the structures of the diacetylene monomer and the extent of ultraviolet irradiation (i.e., polymerization), underscoring a unique sensing mechanism affected by conjugation, structure, and dielectric properties of the polydiacetylene/polymer matrix. Importantly, the variability of polydiacetylene structures allows vapor identification through an array-based pattern recognition (i.e., artificial nose). This study opens new avenues for applications of polydiacetylene systems, particularly pointing to their dielectric properties as powerful sensing determinants.
KW - artificial nose
KW - capacitive vapor sensing
KW - dielectric properties
KW - polydiacetylene
KW - polyvinylpyrrolidone
UR - http://www.scopus.com/inward/record.url?scp=85060867508&partnerID=8YFLogxK
U2 - 10.1021/acsami.8b20930
DO - 10.1021/acsami.8b20930
M3 - Article
C2 - 30608135
SN - 1944-8244
VL - 11
SP - 4470
EP - 4479
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 4
ER -