Benefiting from the strong inherent π-conjugation properties,the integration of Ti_(4)L_(6)(L=embonate)cages and various N,N-chelated transition-metal cations into tightly packed structures accurately leads to high-p...Benefiting from the strong inherent π-conjugation properties,the integration of Ti_(4)L_(6)(L=embonate)cages and various N,N-chelated transition-metal cations into tightly packed structures accurately leads to high-performance materials with adjustable nonlinear optical(NLO)effects.These cage-based ionic pairs possess different supramolecular packing structures,including a π⋯π stacked porous framework where the Ti_(4)L_(6) cages are tactically located at the channels.Interestingly,by introducing the large π-conjugated 1,10-phenanthroline type ligands and adjusting the aromatic ring electron cloud density,we have effectively regulated their third-order NLO properties,realizing nonlinear absorption responses from reverse saturated absorption(RSA)to saturated absorption(SA).This work not only presents an extraordinary coordination cage-based assembly,but also provides new insights into the function of cage materials.展开更多
基金supported by the National Natural Science Foundation of China(21935010)the China National Postdoctoral Program for Innovative Talents(BX2021316)the China Postdoctoral Science Foundation(2021M703217).
文摘Benefiting from the strong inherent π-conjugation properties,the integration of Ti_(4)L_(6)(L=embonate)cages and various N,N-chelated transition-metal cations into tightly packed structures accurately leads to high-performance materials with adjustable nonlinear optical(NLO)effects.These cage-based ionic pairs possess different supramolecular packing structures,including a π⋯π stacked porous framework where the Ti_(4)L_(6) cages are tactically located at the channels.Interestingly,by introducing the large π-conjugated 1,10-phenanthroline type ligands and adjusting the aromatic ring electron cloud density,we have effectively regulated their third-order NLO properties,realizing nonlinear absorption responses from reverse saturated absorption(RSA)to saturated absorption(SA).This work not only presents an extraordinary coordination cage-based assembly,but also provides new insights into the function of cage materials.
