Park et al. also developed a new "hybrid" approach to simplify and improve the flexibility and accuracy of PDAs for VOC detection in each liquid and vapor phase via integrating PDA-based hydrochromic sensors with a conventional smartphone device. PDAs are prepared by polymerization a set of DAs, each of which has the suitable functional group and alkyl chain length, were inkjet-printed on separated regions on a paper substrate, which offer the corresponding PDA a particular colorimetric response to solvents. After exposing the sensor array to eleven organic solvents, color changes of four PDAs occur simultaneously. ultimately, the smartphone camera and the application are used to identify the solvent, that is, exposing the PDA array to an unknown solvent changes color, which is imaged using the smartphone camera and analyzed using the analysis app. comparing color changes in a database created by eleven solvents permits the smartphone app to detect an unknown solvent with 100% accuracy.
Park et al.
also
developed a new
"
hybrid
"
approach to simplify and
improve
the flexibility and accuracy of
PDAs
for VOC detection in each liquid and vapor phase via integrating PDA-based
hydrochromic
sensors with a conventional smartphone device.
PDAs
are prepared
by polymerization a set of
DAs
, each of which has the suitable functional group and alkyl chain length, were
inkjet-printed
on separated regions on a paper substrate, which offer the corresponding PDA a particular colorimetric response to
solvents
. After exposing the sensor array to eleven organic
solvents
, color
changes
of four
PDAs
occur
simultaneously
.
ultimately
, the smartphone camera and the application are
used
to identify the solvent,
that is
, exposing the PDA array to an unknown solvent
changes
color, which
is imaged
using the smartphone camera and analyzed using the analysis app.
comparing
color
changes
in a database created by eleven
solvents
permits the smartphone app to detect an unknown solvent with 100% accuracy.
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