首页|Turning on photoelectric activity by cation exchange within an anionic pyrene-based hydrogen-bonded organic framework
Turning on photoelectric activity by cation exchange within an anionic pyrene-based hydrogen-bonded organic framework
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The assembly of hydrogen-bonded organic frameworks(HOFs)has been proposed as robust porous materials for gas storage/separation,catalysis,molecular recognition,optical applications,enzyme encapsulation,and so on.However,efficient way to obtain well-organized HOFs still remains challenge.Herein,a novel of anionic pyrene-based HOF[BMI]2[H2TBAPy] was synthesised under ionothermal conditions.Relationship between the arrangement of photoactive 1,3,6,8-tetrakis(p-benzoic acid)pyrene molecules and photophysical properties were well studied by the combination of experiments and density functional theory.Through a facile cation-exchange process,the encapsulation of EMc-A dye cations into the HOF nanochannels could sinificantly broaden its light-harvesting region to NIR.The integrated composite can turn on photoelectric activity of the title HOF owing to strong dipole-dipole interactions and efficient energy transfer between host-guest.
College of Chemistry and Chemical Engineering,Luoyang Normal University,Henan Province Function-Oriented Porous Materials Key Laboratory,Luoyang,471934,PR China