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1792723 
Journal Article 
"Reactive" probe for hydrogen sulfite: Good ratiometric response and bioimaging application 
Cheng, X; Jia, H; Feng, Jun; Qin, J; Li, Z 
2013 
1 
Sensors and Actuators B: Chemical
ISSN: 0925-4005
EISSN: 1873-3077 
184 
274-280 
WOS:000319869700038 
4-(1H-Phenanthro[9,10-d] imidazol-2-yl) benzaldehyde (P-1) was prepared as a new ratiometric optical probe for hydrogen sulfite. Upon the addition of HSO3-, it displayed large emission wavelength shift (Delta lambda = 120 nm) and the detection limit was determined to be as low as 2 mu M. In addition to its high selectivity for hydrogen sulfite rather than other common anions, P-1 was successfully applied to the detection of hydrogen sulfite in HeLa cells with ratiometric fluorescent methods. (C) 2013 Elsevier B.V. All rights reserved. 
Ratiometric probe; Hydrogen sulfite; Intramolecular charge transfer; Selectivity; Bioimaging application