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Slippery and transparent polyvinyl alcohol (PVA) hydrogels with mechanical robustness exhibit broad applications in artificial biological soft tissues, flexible wearable electronics, and implantable biomedical devices. Most of the current PVA hydrogels, however, are unable to integrate these features, which compromises its performance in biological and engineering applications. To achieve such purpose,...
NIR‐II Fluorophores
In article number 2204153, Weimin Liu, Jianfeng Li, and co‐workers propose a strategy of precipitation‐enhanced emission (PEE). The PEE is realized by combining NIR‐II fluorophores named LJ‐2P with calcium ions to form LJ‐2P nanoparticles (NPs). LJ‐2P NPs form a cavity surrounding LJ‐2P molecules, which effectively reduces the molecular rotation and interaction of water molecules...
The lack of organic fluorophores with high quantum yields (QYs) and low liver retention in the second near‐infrared (NIR‐II) window has become a bottleneck in the bioimaging field. An approach to address these problems is proposed by encapsulating phosphorylated fluorescent dyes into biodegradable calcium phosphate nanoparticles. First, an NIR‐II molecule, LJ‐2P, is designed with increased water solubility...
Since superwetting surfaces have emerged, on‐demand oil/water separation materials serve as a new direction for meeting practical needs. This new separation mode uses a single porous material to allow oil‐removing and water‐removing to be achieved alternately. In this review, the fundamentals of wettability are systematically summarized in oil/water separation. Most importantly, the two states, bioinspired...
Fluorescence (FL) bioimaging in the second near‐infrared window (NIR‐II, 1000–1700 nm) provides improved imaging quality and high resolution for diagnosis of deep‐seated tumors. However, integrating FL bioimaging and photothermal therapy (PTT) in a single photoactive molecule exhibits a great challenge because a dramatic increase of PTT in the NIR‐II window benefitting from the nonradiative decay...
The construction of porous nanocarriers with good lubricating performance and stimuli‐responsive drug release is significant for the synergetic therapy of osteoarthritis (OA). Although metal‐organic framework nanoparticles (nanoMOFs) as carriers can support drug delivery, achieving the synergy of aqueous lubrication and stimuli‐responsive drug release is challenging. In this work, a core‐shell nanoMOFs@poly(N‐isopropylacrylamide)...
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