TY - JOUR
T1 - Determination of Hg(II) at sub-nanomolar levels
T2 - A comparative study with nanofibrous materials and continuous thin films
AU - Ongun, Merve Zeyrek
AU - Ertekin, Kadriye
AU - Hizliates, Cevher Gundogdu
AU - Oter, Ozlem
AU - Ergun, Yavuz
AU - Celik, Erdal
PY - 2013
Y1 - 2013
N2 - Emission based response of highly luminescent carbozole derivative, 2-(9-methyl-9H-carbazol-3-yl)-5-(pyridin-4-yl)-1,3,4-oxadiazole (ODC-3), to Hg(II) ions was investigated. The dye was encapsulated in ionic liquid doped ethyl cellulose (EC) matrix in form of nanofibrous materials and continuous thin films. The nanofibers were fabricated by electrospinning technique. The ratiometric response to Hg(II) ions was monitored at 418 nm and 505 nm. The quenching behavior follows Stern-Volmer quenching kinetics. The ODC-3 dye can be used for quantitative determination of Hg(II) in the concentration range of 1.0 × 10-11-1.0 × 10-3 M. With respect to continuous thin films, the electrospun nanofibers offered enhanced sensitivity, lower LOD values and shorter response times in optical chemical sensing of Hg(II).
AB - Emission based response of highly luminescent carbozole derivative, 2-(9-methyl-9H-carbazol-3-yl)-5-(pyridin-4-yl)-1,3,4-oxadiazole (ODC-3), to Hg(II) ions was investigated. The dye was encapsulated in ionic liquid doped ethyl cellulose (EC) matrix in form of nanofibrous materials and continuous thin films. The nanofibers were fabricated by electrospinning technique. The ratiometric response to Hg(II) ions was monitored at 418 nm and 505 nm. The quenching behavior follows Stern-Volmer quenching kinetics. The ODC-3 dye can be used for quantitative determination of Hg(II) in the concentration range of 1.0 × 10-11-1.0 × 10-3 M. With respect to continuous thin films, the electrospun nanofibers offered enhanced sensitivity, lower LOD values and shorter response times in optical chemical sensing of Hg(II).
KW - Electrospinning
KW - Fluorescence
KW - Nanofiber
KW - Nanosensor
KW - Optical Hg(II) sensor
UR - http://www.scopus.com/inward/record.url?scp=84875157460&partnerID=8YFLogxK
U2 - 10.1016/j.snb.2013.01.055
DO - 10.1016/j.snb.2013.01.055
M3 - Article
AN - SCOPUS:84875157460
SN - 0925-4005
VL - 181
SP - 244
EP - 250
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
ER -