1 research outputs found
3D Porphyrin-Based Covalent Organic Frameworks
The design and synthesis
of three-dimensional covalent organic
frameworks (3D COFs) bearing photoelectric units have been considered
as a big challenge. Herein, for the first time, we reported the targeted
synthesis of two 3D porphyrin-based COFs (3D-Por-COF and 3D-CuPor-COF),
starting from tetrahedral (3D-<i>T</i><sub>d</sub>) and
square (2D-<i>C</i><sub>4</sub>) building blocks connected
through [4 + 4] imine condensation reactions. On the basis of structural
characterizations, 3D-Por-COF and 3D-CuPor-COF are microporous materials
with high surface areas, and are proposed to adopt a 2-fold interpenetrated <b>pts</b> topology with <i>Pmc</i>2<sub>1</sub> space
group. Interestingly, both 3D COFs are photosensitive and can be used
as heterogeneous catalyst for generating singlet oxygen under photoirradiation.
However, 3D-Por-COF shows enhanced photocatalytic activity compared
with 3D-CuPor-COF, indicating the properties of 3D porphyrin-based
COFs can be tuned by metalation of porphyrin rings. The results reported
here will greatly inspire us to design and synthesize 3D COFs bearing
other metalloporphyrins for interesting applications (e.g., catalysis)
in the future