A core–shell metal–organic-framework (MOF)-based smart nanocomposite for efficient NIR/H2O2-responsive photodynamic therapy against hypoxic tumor cells†
Abstract
Core–shell MOF-based smart nanocomposite UCNPs/MB@ZIF-8@catalase (UCNPs = upconversion nanoparticles; MB = methylene blue; ZIF = zeolitic imidazolate framework) has been constructed for bio-imaging and efficient NIR/H2O2-responsive photodynamic therapy against hypoxic tumor cells. The nanoporous MOF shell can prevent aggregation of photosensitizers and serve as an efficient self-sufficient oxygen gas acceptor.