1. Fluorescence Enhancement through Confined Oligomerization in Nanochannels: An Anthryl Oligomer in a Metal-Organic Framework
- Author
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Tan Wang, Ronald J. Clarke, Zixi Xie, Jiaqi Zhang, Long Gao, Girish Lakhwani, Bun Chan, Deanna M. D'Alessandro, Nicholas Proschogo, Brian S. Hawkett, Cameron J. Kepert, Tiesheng Wang, Randy P. Sabatini, Vicki Chen, Jingwei Hou, and Vien T. Huynh
- Subjects
Materials science ,010405 organic chemistry ,General Chemical Engineering ,Monomers ,Metal organic frameworks ,Biomedical Engineering ,0303 Macromolecular and Materials Chemistry ,010402 general chemistry ,Photochemistry ,01 natural sciences ,Oligomer ,Fluorescence ,0104 chemical sciences ,chemistry.chemical_compound ,chemistry ,Nanochannels ,0302 Inorganic Chemistry ,General Materials Science - Abstract
Nanoconfinement offers opportunities to tune physical properties of molecular entities by altering their assembled structures. This also applies to acene-based molecules with potentially rich π–π interactions. Unlike most of the previous cases with acene-based guests directly incorporated into hosts, we take a further step by oligomerizing a fluorescent anthryl monomer, 9-vinylanthracene, inside nanochannels of a metal–organic framework, which is a pillared three-dimensional kagome net of [Zn2(bdc)2(dabco)] (bdc2– = 1,4-benzenedicarboxylate; dabco = 1,4-diazabicyclo[2.2.2]octane). The fluorescence emission of the guest can be significantly enhanced after oligomerization, which is likely due to the suppressed nonemissive interaction between the oligomerized molecules in the nanospace and the MOF wall. The case we have demonstrated for fluorescence enhancement via confined oligomerization provides inspiration for the design of luminescent composites and is encouraging for further exploration of molecules in a nanoconfined space.
- Published
- 2021