TY - JOUR
T1 - A highly sensitive, single selective, real-time and "turn-on" fluorescent sensor for Al3+ detection in aqueous media
AU - Shi, Xiaoyan
AU - Wang, Huan
AU - Han, Tianyu
AU - Feng, Xiao
AU - Tong, Bin
AU - Shi, Jianbing
AU - Zhi, Junge
AU - Dong, Yuping
PY - 2012/9/28
Y1 - 2012/9/28
N2 - A "turn-on" fluorescent sensor, sodium 4,4′, 4′′-(1H-pyrrole-1,2,5-triyl)tri-benzoate (Py(PhCOO-Na)3), has been prepared for the detection of Al3+ in aqueous solution. The detection mechanism, as well the mechanism specific to Al3+, was studied by fluorescence spectroscopy, UV-vis spectroscopy and dynamic light scattering (DLS) measurement. Py(PhCOONa)3 exhibited an aggregation-induced emission (AIE) characteristic and was found to show a specific affinity to Al3+, as indicated by the enhanced and bathochromically shifted emission of the AIE fluorogen. Upon binding Al 3+, a significant fluorescence enhancement with a turn-on ratio of over 10-fold was triggered by the AIE process. Moreover, this sensor is highly selective for Al3+ over other metal ions with a detection limit of 5 μM and a quantitative detection range of 5-120 μM, and is able to be used in the determination of Al3+ in drinking water. The time-response investigation indicates that the emission intensity of (Py(PhCOO -)3) can be quickly boosted to reach the maximum intensity in less than 10 s upon titration of Al3+.
AB - A "turn-on" fluorescent sensor, sodium 4,4′, 4′′-(1H-pyrrole-1,2,5-triyl)tri-benzoate (Py(PhCOO-Na)3), has been prepared for the detection of Al3+ in aqueous solution. The detection mechanism, as well the mechanism specific to Al3+, was studied by fluorescence spectroscopy, UV-vis spectroscopy and dynamic light scattering (DLS) measurement. Py(PhCOONa)3 exhibited an aggregation-induced emission (AIE) characteristic and was found to show a specific affinity to Al3+, as indicated by the enhanced and bathochromically shifted emission of the AIE fluorogen. Upon binding Al 3+, a significant fluorescence enhancement with a turn-on ratio of over 10-fold was triggered by the AIE process. Moreover, this sensor is highly selective for Al3+ over other metal ions with a detection limit of 5 μM and a quantitative detection range of 5-120 μM, and is able to be used in the determination of Al3+ in drinking water. The time-response investigation indicates that the emission intensity of (Py(PhCOO -)3) can be quickly boosted to reach the maximum intensity in less than 10 s upon titration of Al3+.
UR - http://www.scopus.com/inward/record.url?scp=84865265154&partnerID=8YFLogxK
U2 - 10.1039/c2jm33393g
DO - 10.1039/c2jm33393g
M3 - Article
AN - SCOPUS:84865265154
SN - 0959-9428
VL - 22
SP - 19296
EP - 19302
JO - Journal of Materials Chemistry
JF - Journal of Materials Chemistry
IS - 36
ER -