posted on 2024-02-05, 15:04authored byJian-Zhen Liao, Zi-Chen Zhu, Su-Ting Liu, Hua Ke
Recently, facilely designable metal–organic frameworks
have
gained attention in the construction of photothermal conversion materials.
Nonetheless, most of the previously reported photothermal conversion
metal–organic frameworks exhibit limited light absorption capabilities.
In this work, a distinctive metal–organic framework with heterogeneous
periodic alternate spatial arrangements of metal–oxygen clusters
and perylene-based derivative molecules was prepared by in situ synthesis.
The building blocks in this inimitable structure behave as both electron
donors and electron acceptors, giving rise to the significant inherent
charge transfer in this crystalline material, resulting in a narrow
band gap with excellent panchromatic absorption, with the ground state
being the charge transfer state. Moreover, it can retain excellent
air-, photo-, and water-stability in the solid state. The excellent
stability and broad light absorption characteristics enable the effective
realization of near-infrared (NIR) photothermal conversion, including
infrequent NIR-II photothermal conversion, in this perylene-based
metal–organic framework.