A water-soluble tetraphenylethene based probe for luminescent carbon dioxide detection and its biological application†
A water-soluble fluorescent CO2 gas probe based on a tetraphenylethene derivative (TPE-ONa) has been developed. After bubbling CO2 into the detection solution, a remarkable color change and fluorescence enhancement could be observed. A porous film was successfully fabricated by mixing TPE-ONa with sodium carboxymethyl cellulose in water, which can serve as an efficient CO2 gas detection system. More importantly, TPE-ONa exhibits low cytotoxicity towards live cells and has the ability to monitor the external CO2 concentration changes of living cells.