TY - JOUR
T1 - Enhanced stability of ruthenium complex in ionic liquid doped electrospun fibers
AU - Ongun, Merve Zeyrek
AU - Oter, Ozlem
AU - Sabanci, Gulhan
AU - Ertekin, Kadriye
AU - Celik, Erdal
PY - 2013
Y1 - 2013
N2 - Utilization of electrospun polymer fibers for optical gas sensing purposes results with many advantages such as increasing in surface area, sensitivity and an enhancement in all sensor dynamics. In this study, oxygen sensitive fibers of polymethyl methacrylate and ethyl cellulose were fabricated by electrospinning technique. We utilized water miscible and immiscible ionic liquids, and perfluoro compounds as additives. Steady state and lifetime based spectral response of the fluorescent tris(2,2′-bipyridyl)ruthenium(II) chloride (Ru(bipy)32+) was measured as analytical signal in the absence and presence of the gaseous oxygen. The method can only be applied for gas samples. The stability of the Ru dye in the employed matrix materials was superior to the previously reported ones and when stored at the ambient air of the laboratory there was no significant drift in intensity after 44 months. Our stability tests are still in progress.
AB - Utilization of electrospun polymer fibers for optical gas sensing purposes results with many advantages such as increasing in surface area, sensitivity and an enhancement in all sensor dynamics. In this study, oxygen sensitive fibers of polymethyl methacrylate and ethyl cellulose were fabricated by electrospinning technique. We utilized water miscible and immiscible ionic liquids, and perfluoro compounds as additives. Steady state and lifetime based spectral response of the fluorescent tris(2,2′-bipyridyl)ruthenium(II) chloride (Ru(bipy)32+) was measured as analytical signal in the absence and presence of the gaseous oxygen. The method can only be applied for gas samples. The stability of the Ru dye in the employed matrix materials was superior to the previously reported ones and when stored at the ambient air of the laboratory there was no significant drift in intensity after 44 months. Our stability tests are still in progress.
KW - Fluorescence Lifetime Electrospinning Ionic liquid Oxygen sensor Ruthenium complex
UR - http://www.scopus.com/inward/record.url?scp=84876863731&partnerID=8YFLogxK
U2 - 10.1016/j.snb.2013.03.060
DO - 10.1016/j.snb.2013.03.060
M3 - Article
AN - SCOPUS:84876863731
SN - 0925-4005
VL - 183
SP - 11
EP - 19
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
ER -