Fast detection of organic amine vapors based on fluorescent nanofibrils fabricated from triphenylamine functionalized -diketone-boron difluorideElectronic Supplementary Information (ESI) available: 11B NMR spectra of 1; UVvis absorption and fluorescence spectra of 1. See DOI: 10.1039/c1jm14187b
Nanofibrils emitting strong red light have been fabricated from triphenylamine functionalized -diketone-boron difluoride 1 , via a rapid solution dispersion approach. It is found that the nanofibrils based on compound 1 can sense volatile organic amines and pyridine selectively. For example, the flu...
Saved in:
Main Authors | , , , , |
---|---|
Format | Journal Article |
Language | English |
Published |
13.12.2011
|
Online Access | Get full text |
Cover
Loading…
Summary: | Nanofibrils emitting strong red light have been fabricated from triphenylamine functionalized -diketone-boron difluoride
1
,
via
a rapid solution dispersion approach. It is found that the nanofibrils based on compound
1
can sense volatile organic amines and pyridine selectively. For example, the fluorescence of the nanofibril-based film can be quenched quickly and significantly upon exposed to the vapors of
n
-butylamine, dibutylamine, tributylamine, triethylamine, cyclohexylamine, hydrazine, aniline,
N
,
N
-dimethylaniline and pyridine instead of other common reagents. Notably, the response time of the nanofibril-based film to aniline is
ca.
1.06 s, which is one of the fastest fluorescent responses to aniline. The detection limit of the nanofibril-based film for aniline vapor can reach
ca.
100 ppb. We suggest that the high sensitivity and fast response of the sensory nanofibrils towards gaseous amines may come from the high surface-to-volume ratio and large interspace in the nanofibril-based networks, which favor the enhanced adsorption, accumulation and diffusion of gaseous molecules. In addition, the amplified fluorescence quenching induced by the enhanced intermolecular exciton diffusion along the long axis of the 1D nanostructures is another reason for the high performance of the obtained sensory nanomaterial.
Nanofibrils emitting strong red light have been fabricated from -diketone-boron difluoride
via
a rapid solution dispersion approach and they can sense volatile organic amines with high sensitivity and a rapid response. |
---|---|
Bibliography: | 11 1 UVvis absorption and fluorescence spectra of 10.1039/c1jm14187b See DOI Electronic Supplementary Information (ESI) available B NMR spectra of |
ISSN: | 0959-9428 1364-5501 |
DOI: | 10.1039/c1jm14187b |