Ratiometric fluorescent sensors for nitrite detection in the environment based on carbon dot/Rhodamine B systems |
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| Authors: | Huihui Tao Zhao Zhang Qiao Cao Lingfei Li Shihao Xu Changlong Jiang Yucheng Li Yingying Liu |
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| Institution: | School of Resources and Environmental Engineering, Anhui University, Hefei 230601 Anhui Province P. R. China.; Institute of Intelligent Machines, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031 P. R. China.; Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031 P. R. China |
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| Abstract: | A novel carbon dot/Rhodamine B-based ratiometric fluorescent probe was developed for a highly sensitivity and selective detection of nitrite (NO2−). The probe showed colour changes from blue to orange under ultraviolet light in response to NO2− with a detection limit as low as 67 nM in the range of 0 to 40 μM. A ratiometric fluorescent test paper was successfully prepared using the probe solution, which demonstrated its feasibility towards a rapid and semi-quantitative detection of NO2− in real samples.A visual ratiometric fluorescent sensor based on blue carbon dot/Rhodamine B is used to selectively detect NO2− in the environment. |
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