Ultrasensitive detection of nitrogen oxides over a nanoporous membrane.
A nitrogen oxide (NO(x); x = 1, 2) optical sensor with an extremely low detection limit in the range of fractions of ppbV (0.3 ppbV for 20 s sample injection) is presented. Phenylenediamine derivatives are utilized as molecular probes in the solid state on a nanoporous membrane to produce a miniaturized and low cost sensing platform for use as a wearable personal monitor.
Center for Bioelectronics and Biosensors, the Biodesign Institute, Arizona State University, Tempe, Arizona 85287, USA.
Amlendu
A
Prabhakar
Rodrigo A
RA
Iglesias
Rui
R
Wang
Francis
F
Tsow
Erica S
ES
Forzani
Nongjian
N
Tao
D000537:Aluminum Oxide / Q000737:chemistry; D015335:Molecular Probes / Q000737:chemistry; D053758:Nanoparticles / Q000737:chemistry*; D009589:Nitrogen Oxides / Q000032:analysis*; D010655:Phenylenediamines / Q000737:chemistry; D016062:Porosity; D013056:Spectrophotometry, Ultraviolet / Q000379:methods*
D015335:Molecular Probes; D009589:Nitrogen Oxides; D010655:Phenylenediamines; D000537:Aluminum Oxide