首页|Encapsulating electron-rich guest in a MOF host through donor-acceptor interaction for highly tunable luminescence
Encapsulating electron-rich guest in a MOF host through donor-acceptor interaction for highly tunable luminescence
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
The rational construction and modulation of charge-transfer based fluorescence materials in host-guest systems by virtue of donor-acceptor interactions remains a challenge owing to the elaborate self-assembly process of acceptor and donor components.Taking into account the design principles of the host-guest system,a well-defined MOF with electron-deficient properties should be an ideal host for the building of charge-transfer based fluorescence materials.Herein,an electron-deficient MOF host,[Cd3(NDC)3(tpt)2(H2O)3](1)(H2NDC = 1,4-naphthalenedicarboxylic acid,tpt = 2,4,6-tri(4-pyridinyl)-1,3,5-triazine),and a corresponding series of host-guest materials lDguest(guest = phenanthrene for 2,anthracene for 3,pyrene for 4,triphenylene for 5)with charge-transfer based fluorescence were successfully fabricated via the donor-acceptor interactions.Profiting from the clear electron-rich guests to electron-deficient MOF framework charge transfer interactions,the host-guest materials exhibit color-tunable emission over a wide range by rational selection of guest molecules.Furthermore,the electronic structure calculations reveal that the multicolor emission of the newly synthesized MOF materials depends on the HOMO energy level/ionization potential of guests.This work provides a hopeful strategy for the assembly of various novel charge transfer fluorescent materials as potential luminophores.
NSTL
