Determination of phenobarbital in real sample using carbon quantum dots modified with tungsten as a fluorescent nanoprobe (original) (raw)

Journal of Materials Science: Materials in Electronics

Abstract

In this study, a sensitive and selective fluorescence nanoprobe has been designed based on carbon quantum dots modified by tungsten (WCQDs) for the detection of phenobarbital. Tungsten WCQDs were synthesized via a hydrothermal method using tungsten nitrate and glucose as a carbon source. The fluorescence signal of WCQDs was selectively increased by phenobarbital. The fluorescence increasing signal was applied for phenobarbital sensing at the pH = 8 without the interference of other materials. After optimizing the factors affecting the sensor’s response, a linear range between 25 and 500 µM with a detection limit of 5 µM was obtained. The sensor’s capability in the real-sample analysis was investigated by phenobarbital determination in human blood plasma samples.

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