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Highly selective fluorescent chemosensor for Zn2+ derived from inorganic-organic hybrid magnetic core/shell

Yujiao Wang1, Xiaohong Peng, Jinmin Shi

  • 1Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, People's Republic of China. liuws@lzu.edu.cn.

Nanoscale Research Letters
|January 27, 2012
PubMed

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Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.