共 35 条
An acid catalyzed reversible ring-opening/ring-closure reaction involving a cyano-rhodamine spirolactam
被引:69
作者:
Li, Honglin
[1
]
Guan, Hong
[1
]
Duan, Xinrui
[1
]
Hu, Jun
[1
]
Wang, Guiren
[2
,3
]
Wang, Qian
[1
]
机构:
[1] Univ S Carolina, Dept Chem & Biochem, Columbia, SC 29208 USA
[2] Univ S Carolina, Dept Mech Engn, Columbia, SC 29208 USA
[3] Univ S Carolina, Biomed Engn Program, Columbia, SC 29208 USA
关键词:
FLUORESCENT-PROBES;
PH;
WATER;
SOLVENT;
CHEMOSENSORS;
RECOGNITION;
CYANAMIDE;
SENSOR;
CELLS;
IONS;
D O I:
10.1039/c3ob27356c
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
Cyanamide was introduced into the rhodamine spirolactam framework to produce a colorless and non-fluorescent compound RBCN. It shows a reversible ring-opening/ring-closure process in response to the solution pH, which exhibits an "ON/OFF" switching in its fluorescence. Different from other rhodamine-type dyes, the ring-open form of RBCN is stable in protic solvents under neutral, near neutral and basic conditions, showing a pink color and very strong fluorescence. We also demonstrated the potential of RBCN in live cell imaging.
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页码:1805 / 1809
页数:5
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