Preparation of a zinc porphyrinated nanofibrous membrane and its ammonia sensing property / 浙江大学学报·医学版
Journal of Zhejiang University. Medical sciences
; (6): 274-280, 2012.
Article
in Zh
| WPRIM
| ID: wpr-336796
Responsible library:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To prepare a zinc porphyrinated polyimide nanofibrous membrane for rapid detection of trace amount of ammonia.</p><p><b>METHODS</b>Zinc porphyrin chromophore was copolymerized into polyimide backbones and the according nanofibrous membrane was prepared by electrospinning technique. Ammonia detection was achieved by recording the color and spectral changes of the membrane before and after exposing to the target gas. The sensitivity, selectivity and detection limit of prepared membrane were further studied.</p><p><b>RESULTS</b>The obtained nanofibrous membrane preserved typical photophysical properties of zinc porphyrin chromophores. When exposed to ammonia, a dual chromo and spectrum responses of the nanofibrous membrane were observed. The binding affinity constant and the detection limit of zinc porphyrinated polyimide nanofibrous membrane calculated from surface plasmon resonance (SPR) analysis and UV-vis were 3.33 X10³ L/mol and 3.13 mg/m³, respectively.</p><p><b>CONCLUSION</b>The membrane prepared in this study exhibits good sensitivity, selectivity and reproducibility towards ammonia detection.</p>
Full text:
1
Index:
WPRIM
Main subject:
Sensitivity and Specificity
/
Surface Plasmon Resonance
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Nanostructures
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Ammonia
/
Imides
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Membranes, Artificial
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Metalloporphyrins
/
Methods
Type of study:
Diagnostic_studies
Language:
Zh
Journal:
Journal of Zhejiang University. Medical sciences
Year:
2012
Type:
Article