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In Situ Enzyme Immobilization with Oxygen‐Sensitive Luminescent Metal–Organic Frameworks to Realize “All‐in‐One” Multifunctions
摘要： Metal-organic frameworks (MOFs) for enzyme immobilization have already shown superior tunable and designable characteristics, however, their devisable responsive properties have rarely been exploited. Herein, we integrated a responsive MOF into MOF-enzyme composite to propose an “all-in-one” multifunctional composite with catalytic and luminescence functions implemented within a single particle. As a proof-of-concept, glucose oxidase (GOx) was in situ encapsulated within an oxygen (O2)-sensitive, noble-metal-free luminescent Cu(I) triazolate framework (MAF-2), namely GOx@MAF-2. Owing to the rigid scaffold of MAF-2 and the confinement effect, the GOx@MAF-2 composite showed significantly improved stability (shelf life to 60 days and heat-resistance up to 80 oC) with good selectivity and recyclability. More importantly, the integration of the O2-sensitivity of MAF-2 allowed the GOx@MAF-2 composite rapidly and reversibly response toward dissolved O2, which realized direct and ratiometric sensing of glucose without the needs of chromogenic substrates, cascade enzymatic reactions or electrode system. A high sensitivity with a detection limit of 1.4 μM glucose was achieved, and the glucose in human sera was accurately determined. The strategy opens a new application of MOFs and can be facilely extended to various MOF-enzyme composites due to the multifunctionality of MOFs.
关键词： enzyme immobilization,metal-organic frameworks,all-in-one multifunctions,glucose detection,fluorometric sensor
更新于2025-11-21 11:08:12
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All-in-one photosynthetic assemblies for solar fuels
摘要： Converting solar energy into chemical fuel using an all-in-one photosynthetic assembly requires novel concept and cutting-edge technologies. Up to now, a series of new concepts have been suggested for designing of the assembly. It is thus important to examine present physics and research status of the assembly to glean the design guidelines for future devices. Here we introduce the concept of all-in-one photosynthetic assembly, which including photoelectrochemical diodes, all-in-one membranes and monolithic photovoltaic-photoelectrolysis cells. Key physical aspects are examined to identify the state-of-the-art in device design. We then discuss the device configurations, requirements and practical implications. Key features of the assemblies are also highlighted with their photosynthetic performance. Finally, a potential design that can be scalable to large area is projected for a more complete picture of the field. These concepts and their successful realization will be an important contribution towards realization of artificial photosynthesis.
关键词： Photochemical cells,All-in-one,Device,Artificial photosynthesis,Solar fuels
更新于2025-09-23 15:21:01