Singh et al., Analyst, 2012, Advance Article
The design and fabrication of monolayer-based sensors for various chemicals, gases, metal ions, explosives and biologically relevant molecules have received much attention recently. In particular, optical sensors are of great interest due to the advantage that the sensing system does not need to be directly wired with large scale electronics.
In this paper, Tarkeshwar Gupta of the University of Delhi, Delhi, India, and colleagues describe the “turn-on” optical detection of parts-per-million (ppm) levels of ascorbic acid in water using a redox-active monolayer on glass.
Their system is based on a nondestructive solution-to-surface one-electron transfer process that can be read out optically with an off-the-shelf UV/vis spectrophotometer.
Communication: “Turn on” electron-transfer-based selective detection of ascorbic acid via copper complexes immobilized on glass
Vikram Singh, Prakash Chandra Mondal, Jeyachandran Yekkoni Lakshmanan, Michael Zharnikov and Tarkeshwar Gupta
Analyst, 2012, Advance Article
DOI: 10.1039/C2AN16197D
