Two-Photon Responsive Metal–Organic Framework

Two-photon processing presents a
facile means to tailor the properties
of materials in three-dimensions. A two-photon responsive metal–organic
framework (MOF) has been realized through the incorporation of a photoactive
linker into a MOF via a multivariate strategy. The resulting MOF exhibits
a significant one-photon and two-photon excited fluorescence change
in response to UV light and infrared femtosecond laser, enabling spatial
modulation of the fluorescence property of the MOF. It thus demonstrates
the capacity of two-photon patterning and imaging inside the crystal,
and the formation of three-dimensional two-photon excited fluorescent
structure in a high resolution.