Abstract
Macrocyclic materials have attracted much attention due to their particular chemical and physical proper-ties.Herein we report the precise synthesis and characterization of a new bismacrocycle structure base on cycloparaphenylene(CPP)and pillar[5]arene,named cycloparaphenylene-pillar[5]arenes(CPPn[5]).The bismacrocycle was fully characterized by NMR and HR-MS.The photophysical properties of CPPn[5]were investigated by UV-vis,and the maximum absorption peak was located at 331 nm,which was consis-tent with density functional theory(DFT)calculations.The fluorescence spectrum was further studied and the emission peak was maximized at 458 nm.The computational results indicate the strain energy of CPPn[5]is 27.80 kcal/mol and the HOMO-LUMO gap is 3.39 eV Notably,CPPn[5]showed interesting supramolecular properties.
基金项目
国家自然科学基金(22225108)
国家自然科学基金(21971229)
国家自然科学基金(U1932214)
Hefei National Research Center for Physical Sciences at the Microscale()
NETL
NSTL
万方数据