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Electrospinning fibrous films doped with iridium complexes for high performance oxygen sensing: Synthesis and characterization
- Source :
- Sensors and Actuators B: Chemical. 240:697-708
- Publication Year :
- 2017
- Publisher :
- Elsevier BV, 2017.
-
Abstract
- This work was devoted to three Ir(III) complexes having large conjugation planes and various numbers of fluorine substituents for optical oxygen sensing purpose. These F atoms might broaden electronic distribution of excited electrons and increase their decay lifetime, hoping to increase sensing collision probability of excited electrons with O 2 molecules. These Ir(III) complexes were analyzed by single crystal analysis and density functional theory calculation. Photophysical measurement suggested that their phosphorescent emission was quenchable by O 2 gas. By doping these Ir(III) complexes into fibrous films through electrospinning method, their oxygen sensing performance was explored. The presence of F atoms improved oxygen sensing performance. High sensitivity (12.89), short response (8 s), good stability and, more importantly, linear response were observed.
- Subjects :
- Chemistry
Doping
Metals and Alloys
chemistry.chemical_element
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Electrospinning
0104 chemical sciences
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Excited state
Materials Chemistry
Molecule
Organic chemistry
Physical chemistry
Density functional theory
Iridium
Electrical and Electronic Engineering
0210 nano-technology
Phosphorescence
Instrumentation
Single crystal
Subjects
Details
- ISSN :
- 09254005
- Volume :
- 240
- Database :
- OpenAIRE
- Journal :
- Sensors and Actuators B: Chemical
- Accession number :
- edsair.doi...........49c9c0fb911fae7c1c7abe1492629307