How to incorporate chromophores into MOFs is a key for the development of multifunctional photoactive systems. The poor internalization by cancer cells and low efficiency of ROS generation hamper the potential clinic application of Ru-based molecular agents. In this work, a nanoscale Ru-doped metal-organic framework Hf-UiO-Ru (Hf-Ru) with framework-boosted photoactivities was prepared a multivariate strategy for use in bioimaging and ROS generation. The as-synthesized Hf-Ru nanocrystals not only maintain the well regular morphology and crystal structure in comparison with that of the Hf-UiO-66 prototype but also give an oxygen-independent emission with a much longer lifetime, higher quantum yield, and stronger ROS generation than molecular Ru(dcbpy). Additionally, the enhanced cellular uptake and high brightness in fluorescence and CT imaging of Hf-Ru nanocrystals have also been well studied . This multivariate strategy may be utilized as a general paradigm to develop a photoactive nanosystem for bioimaging and cancer treatment.
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