TY - JOUR
T1 - Rapid visual identification of nitroaromatics compounds by aggregation-induced enhanced emission fluorescent assays with a Cd(II)-H3BTT complex
AU - Liu, Yi
AU - Zhang, Qi
AU - Jing, Dong
AU - He, Xuan
AU - Cui, Sheng
AU - Liu, Yu
N1 - Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/10/1
Y1 - 2019/10/1
N2 - A new type of aggregation induced enhance emission (AIEE) active Cd(II) complex based on novel nitrogen-rich polycyclic ligand 4,5-bis(tetrazol-5-yl)-2H-1,2,3-triazole (H3BTT) and its metal organic gel (MOG) had been synthesized for the first time. The colloid of Cd(II)-H3BTT complex showed obvious AIEE characteristics in binary solvent system of DMF and ethanol, and displayed high sensitivity and selectivity for PA sensing over other nitroaromatics like DNB, TNB and TNT, where the limit of detection had been found as low as 9.3 × 10−7 M. Further, visual colorimetric recognition in colloidal state sensor and coated filter paper were all accomplished by spiking PA in tap water and river water. Interestingly, after being ripened, this colloid could be converted into stable MOG with the AIEE performance inherited, which also shown good fluorescence recognition ability and excellent reusability for the visual colorimetric PA detection. Surprisingly, we found that this gel could be reverse to colloidal state by simple ultrasound operation. And this regenerated colloid from the MOG storage for a period of time kept the same detection ability for PA as fresh colloid. Finally, the recognition mechanism of PA was confirmed as the counterion-displacement assays by FTIR and UV experiments. This novel Cd(II)-H3BTT complex provided a new insight into the design and synthesis of AIEE naked eyes recognized sensor for nitroaromatics with a simple and cheap preparation process, high sensitivity and stable storage.
AB - A new type of aggregation induced enhance emission (AIEE) active Cd(II) complex based on novel nitrogen-rich polycyclic ligand 4,5-bis(tetrazol-5-yl)-2H-1,2,3-triazole (H3BTT) and its metal organic gel (MOG) had been synthesized for the first time. The colloid of Cd(II)-H3BTT complex showed obvious AIEE characteristics in binary solvent system of DMF and ethanol, and displayed high sensitivity and selectivity for PA sensing over other nitroaromatics like DNB, TNB and TNT, where the limit of detection had been found as low as 9.3 × 10−7 M. Further, visual colorimetric recognition in colloidal state sensor and coated filter paper were all accomplished by spiking PA in tap water and river water. Interestingly, after being ripened, this colloid could be converted into stable MOG with the AIEE performance inherited, which also shown good fluorescence recognition ability and excellent reusability for the visual colorimetric PA detection. Surprisingly, we found that this gel could be reverse to colloidal state by simple ultrasound operation. And this regenerated colloid from the MOG storage for a period of time kept the same detection ability for PA as fresh colloid. Finally, the recognition mechanism of PA was confirmed as the counterion-displacement assays by FTIR and UV experiments. This novel Cd(II)-H3BTT complex provided a new insight into the design and synthesis of AIEE naked eyes recognized sensor for nitroaromatics with a simple and cheap preparation process, high sensitivity and stable storage.
KW - Aggregation induced enhanced emission
KW - Flexible test paper
KW - Naked-eye recognition
KW - Nitroaromatic compounds
KW - Stable storage
UR - http://www.scopus.com/inward/record.url?scp=85066871132&partnerID=8YFLogxK
U2 - 10.1016/j.snb.2019.126623
DO - 10.1016/j.snb.2019.126623
M3 - 文章
AN - SCOPUS:85066871132
SN - 0925-4005
VL - 296
JO - Sensors and Actuators B: Chemical
JF - Sensors and Actuators B: Chemical
M1 - 126623
ER -