Strategic Oxygen‐Substitution in Perfluorinated Ce(IV) Coordination Frameworks Triggers Dual‐Wavelength Nonlinear Optical Materials With Exceptional Performances

Abstract Nonlinear optical (NLO) crystals with second‐harmonic generation (SHG) are crucial in laser technology for extending spectral ranges. However, achieving large SHG coefficients, suitable birefringence for phase‐matching, and a broad laser output range remains a significant challenge. This work put forward a facile route to create NLO crystals with a wide‐wavelength range by a slight oxygenation strategy in Ce(IV)‐based fluorides. Given the tendency of perfluorinated Ce(IV)‐based polyhedral geometry unit, a divalent oxygen anion was introduced to partially replace the monovalent fluorine anion to enhance the distortion of Ce(IV)‐based polyhedra. This work successfully synthesized a series of acentric…

• NN
  National Natural Science Foundation of China

  Awards: 22101248, 22371246