TY - JOUR
T1 - Highly sensitive and fast-responsive fluorescent chemosensor for palladium
T2 - Reversible sensing and visible recovery
AU - Li, Honglin
AU - Fan, Jiangli
AU - Hu, Mingming
AU - Cheng, Guanghui
AU - Zhou, Danhong
AU - Wu, Tong
AU - Song, Fengling
AU - Sun, Shiguo
AU - Duan, Chunying
AU - Peng, Xiaojun
PY - 2012/9/24
Y1 - 2012/9/24
N2 - The well-known rhodamine spiro-lactam framework offers an ideal model for the development of fluorescence-enhanced chemosensors through simple and convenient syntheses. Herein, we report a new tridentate PNO receptor, which was introduced into a rhodamine spiro-lactam system to develop Pd 2+-chemosensor RPd4, that displayed significantly improved sensing properties for palladium. Compound RPd4 shows a very fast response time (about 5-s), high sensitivity (5-nM), and excellent specificity for Pd 2+ ions over other PGE ions (Pt 2+, Rh 3+, and Ru 3+). In addition, RPd4 displays quite different responses to different valence states of the Pd ions, that is, very fast response towards Pd 2+ ions but slow response towards Pd 0, which may provide us with a convenient method for the selective discrimination of Pd species in different valence states. According to proof-of-concept experiments, RPd4 has potential applications in Pd 2+-analysis in drug compounds, water, soil, and leaf samples. Owing to its good reversibility, RPd4 can also be used as a sensor material for the selective detection and visual recovery of trace Pd 2+ ions in environmental samples.
AB - The well-known rhodamine spiro-lactam framework offers an ideal model for the development of fluorescence-enhanced chemosensors through simple and convenient syntheses. Herein, we report a new tridentate PNO receptor, which was introduced into a rhodamine spiro-lactam system to develop Pd 2+-chemosensor RPd4, that displayed significantly improved sensing properties for palladium. Compound RPd4 shows a very fast response time (about 5-s), high sensitivity (5-nM), and excellent specificity for Pd 2+ ions over other PGE ions (Pt 2+, Rh 3+, and Ru 3+). In addition, RPd4 displays quite different responses to different valence states of the Pd ions, that is, very fast response towards Pd 2+ ions but slow response towards Pd 0, which may provide us with a convenient method for the selective discrimination of Pd species in different valence states. According to proof-of-concept experiments, RPd4 has potential applications in Pd 2+-analysis in drug compounds, water, soil, and leaf samples. Owing to its good reversibility, RPd4 can also be used as a sensor material for the selective detection and visual recovery of trace Pd 2+ ions in environmental samples.
KW - fluorescent probes
KW - lactams
KW - palladium
KW - sensors
KW - spiro compounds
UR - https://www.scopus.com/pages/publications/84866391647
U2 - 10.1002/chem.201201998
DO - 10.1002/chem.201201998
M3 - 文章
AN - SCOPUS:84866391647
SN - 0947-6539
VL - 18
SP - 12242
EP - 12250
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
IS - 39
ER -