通过基于Cu-modified B₁₂N₁₂和Al₁₂的电子,光学和工作功能传感器选择性检测尸体的进展纳米:密度功能理论 (DFT) 研究研究

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.