1. Rhodamine-Immobilised Electrospun Chitosan Nanofibrous Material as a Fluorescence Turn-On Hg2+Sensor
- Author
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Mustafa M. Demir, Mustafa Emrullahoğlu, Nesrin Horzum, Erman Karakuş, Derya Mete, Muhammed Üçüncü, TR11372, TR113963, TR114736, TR203331, TR130614, Mete, Derya, Karakuş, Erman, Üçüncü, Muhammed, Emrullahoğlu, Mustafa, Demir, Mustafa M., and Izmir Institute of Technology. Materials Science and Engineering
- Subjects
Chitosan ,Fluorescence-lifetime imaging microscopy ,Fluorophore ,Mercury sensing ,02 engineering and technology ,General Chemistry ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Photochemistry ,01 natural sciences ,Fluorescence ,Fluorescence imaging ,Electrospinning ,0104 chemical sciences ,Nanofibre ,Rhodamine ,chemistry.chemical_compound ,chemistry ,Moiety ,Composite material ,0210 nano-technology ,Selectivity - Abstract
A turn-on fluorescence sensing system for mercuric (Hg2+) ions relying on a modified rhodamine B–chitosan fluorophore moiety was developed. This novel sensing approach relies on the simultaneous electrospinning of chitosan and rhodamine B hydrazide with phenylisothiocyanate functionality in hexafluoroisopropanol solution at 3.4 kV cm−1. The electrospun mats exhibited not only considerably enhanced fluorescence intensity in the presence of mercury ions, a result attributed to the ring opening of the spirolactam unit of the rhodamine-based fluorophore, but also a remarkably high sensitivity and selectivity toward Hg2+. In effect, the strategy has the potential to open new avenues in the design and development of other high-performance nanofibrous sensing materials for detecting target metal species of environmental interest.
- Published
- 2016