UV Light Detection and Sensing using Highly Fluorescent Carbon Quantum Dot’s

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Chemistry, Ben Gurion University, Beer Sheva, Israel

Carbon quantum dots (CD) are carbon based Nano materials that exhibit good photoluminescence and low photobleaching, also CDs display semiconductor-like photoelectric properties, CDs possess great superb qualities relatively simple synthesis, unique structure, adjustable composition, ease of surface functionalization, outstanding electron-transfer efficiency and tunable light-harvesting range (from deep UV to the near-infrared). [1,2]

Ultraviolet radiation’s effect on biological systems is very widely studied, specifically, Ultraviolet B (UV-B) radiation, a very small fraction of the daylight spectrum, cause changes in plant secondary metabolism that have large effects on plant-insect interactions. The signal transduction pathways that mediate these specific effects of solar UV-B are not known, it is thus very important to have the ability to estimate the amount of UV radiation in agricultural systems in a precise and nondestructive way [3,4]

Herein we present a facile synthesis for UV light sensitive carbon dots derived from methyl viologen and glucose for further use an UV sensor for agricultural systems.

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References-

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  • Haitao Li, Xiaodie He, Zhenhui Kang, Hui Huang, Yang Liu, Jinglin Liu, Suoyuan Lian,Chi Him A. Tsang, Xiaobao Yang, and Shuit-Tong Lee. Water‐soluble fluorescent carbon quantum dots and photocatalyst design. Angew. Chem. Int. Ed. 49 (2010) 4430-4434
  • Rajesh P. Rastogi,Richa, Ashok Kumar, Madhu B. Tyagi, and Rajeshwar P. Sinha., et al. Molecular mechanisms of ultraviolet radiation-induced DNA damage and repair. Journal of nucleic acids, 2010, (2010) 1-32.
  • Demkura PV, Abdala G, Baldwin IT, Ballaré CL.. Jasmonate-dependent and-independent pathways mediate specific effects of solar ultraviolet B radiation on leaf phenolics and antiherbivore defense. Plant Physiol., 152 (2010) 1084-1095.








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