TY - JOUR
T1 - Silver Ion Polyelectrolyte Container as a Sensitive Quartz Crystal Microbalance Gas Detector
AU - Tsuge, Yosuke
AU - Moriyama, Yukari
AU - Tokura, Yuki
AU - Shiratori, Seimei
N1 - Publisher Copyright:
© 2016 American Chemical Society.
PY - 2016/11/1
Y1 - 2016/11/1
N2 - A polyelectrolyte film containing metastable silver ions was applied as a quartz crystal microbalance (QCM) gas detector. The polyelectrolyte film was obtained by immersing a polyelectrolyte with numerous amine groups in a metal ion solution. The QCM detector with silver ions responded to a very low methylmercaptan gas concentration (20 ppb) but did not respond to ammonia, volatile amines, aromatic compounds, or alcohols. The response speed of the QCM detector increased gradually with increasing methylmercaptan concentrations. The highly sensitive and selective response is promoted by a ligand substitution reaction caused by the formation of coordinative bonds between a metastable silver ion and amine groups in the polyelectrolyte film. To the best of our knowledge, this system has the highest sensitivity among reported QCM gas detectors. Such high-sensitivity among reported QCM gas detectors. Such high-sensitivity gas detectors for volatile sulfur compounds have wide ranging applications in areas such as volcanic eruption prediction, food inspection, environmental analysis, and medical diagnostics.
AB - A polyelectrolyte film containing metastable silver ions was applied as a quartz crystal microbalance (QCM) gas detector. The polyelectrolyte film was obtained by immersing a polyelectrolyte with numerous amine groups in a metal ion solution. The QCM detector with silver ions responded to a very low methylmercaptan gas concentration (20 ppb) but did not respond to ammonia, volatile amines, aromatic compounds, or alcohols. The response speed of the QCM detector increased gradually with increasing methylmercaptan concentrations. The highly sensitive and selective response is promoted by a ligand substitution reaction caused by the formation of coordinative bonds between a metastable silver ion and amine groups in the polyelectrolyte film. To the best of our knowledge, this system has the highest sensitivity among reported QCM gas detectors. Such high-sensitivity among reported QCM gas detectors. Such high-sensitivity gas detectors for volatile sulfur compounds have wide ranging applications in areas such as volcanic eruption prediction, food inspection, environmental analysis, and medical diagnostics.
UR - http://www.scopus.com/inward/record.url?scp=84993990838&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84993990838&partnerID=8YFLogxK
U2 - 10.1021/acs.analchem.6b03387
DO - 10.1021/acs.analchem.6b03387
M3 - Article
AN - SCOPUS:84993990838
VL - 88
SP - 10744
EP - 10750
JO - Analytical Chemistry
JF - Analytical Chemistry
SN - 0003-2700
IS - 21
ER -