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Hydrogen generation via electrocatalytic water splitting holds great promise for future energy revolution. It is desirable to design abundant and efficient catalysts and achieve mechanistic understanding of hydrogen evolution reaction (HER). Here, this paper reports a strategy for improving HER performance of molybdenum disulfide (MoS2) via introducing gold nanoclusters as a cocatalyst. Compared to...
Understanding the cellular uptake of nanomaterials (NMs) is a fundamental and critical issue for uncovering biomedical effects of NMs and facilitating their practical applications in the clinic. In this Review, by highlighting the differences of NMs cellular uptake between in vitro and in vivo, a focus on reviewing recent works about the effects of four physicochemical parameters of NMs (size, rigidity,...
Climate change, caused by heavy CO2 emissions, is driving new demands to alleviate the rising concentration of atmospheric CO2 levels. Enlightened by the photosynthesis of green plants, photo(electro)chemical catalysis of CO2 reduction, also known as artificial photosynthesis, is emerged as a promising candidate to address these demands and is widely investigated during the past decade. Among various...
One major challenge in upconversion research is to develop new materials and structures to expand the emission spectrum. Herein, a heterogeneous core−shell−shell nanostructure of NaYbF4:Gd/Tm@NaGdF4@CaF2:Ce is developed to realize efficient photon upconversion in Ce3+ ions through a Gd‐mediated energy migration process. The design takes advantage of CaF2 host that reduces the 4f–5d excitation frequency...
Highly reliable detection, imaging, and monitoring of reactive oxygen species (ROS) are critical for understanding and studying the biological roles and pathogenesis of ROS. This study describes the design and synthesis of myoglobin and polydopamine‐engineered surface‐enhanced Raman scattering (MP‐SERS) nanoprobes with strong, tunable SERS signals that allow for specifically detecting and imaging...
Herein, a poly(vinylpyrrolidone) (PVP)‐free method is described for synthesizing Ag nanoplates that have localized surface plasmon resonance in the near‐infrared (NIR) range. Citrate‐capped Ag spherical nanoparticles are first grown into small Ag nanoplates that resonate in the range of 500–800 nm. The small Ag nanoplates are used as seeds to further grow into large Ag nanoplates with a lateral dimension...
Membrane plays significant role in cellular enzymatic reactions. To better understand its function on membrane integral or bound enzymes, DNA origami and frame‐guided assembly strategy are combined to construct a given‐size, addressable enzyme‐containing nanomembrane as a heterogeneous reactor to explore the enzymatic catalyst reaction on the membrane. The enzymes in the membrane are located precisely...
Unwanted stimulation of the innate immune system by foreign nucleic acids has been one of the major barriers preventing bioactive sequences from reaching market. Foreign nucleic acids can be recognized by multiple pattern recognition receptors (PRRs), which trigger a signaling cascade to activate host defense systems, leading to a range of side effects. This study demonstrates that polyethylene glycol...
Designing controlled hybrid nanoarchitectures between plasmonic and catalytic materials is of paramount importance to fully exploit each function of constituent materials. This study reports a new synthetic strategy for the realization of colloidal clusters of core–shell nanoparticles with plasmonic cores and catalytically active shells. The Au@M (M = Pd or Pt) nanoparticle clusters (NPCs) with a...
1D polymer nanomaterials as emerging materials, such as nanowires, nanotubes, and nanopillars, have attracted extensive attention in academia and industry. The distinctive, various, and tunable structures in the nanoscale of 1D polymer nanomaterials present nanointerfaces, high surface‐to‐volume ratio, and large surface area, which can improve the performance of energy devices. In this review, representative...
A novel room‐temperature aqueous synthesis for gold nanoparticle‐embedded silver cubic mesh nanostructures using AgCl templates via a template‐assisted coreduction method is developed. The cubic AgCl templates are coreduced in the presence of AuCl4− and Ag+, resulting in the reduction of AuCl4− into gold nanoparticles on the outer region of AgCl templates, followed by the reduction of AgCl and Ag+...
This study reports the preparation of a series of gadolinium‐polydopamine nanoparticles (GdPD‐NPs) with tunable metal loadings. GdPD‐NPs are analyzed by nuclear magnetic relaxation dispersion and with a 7‐tesla (T) magnetic resonance imaging (MRI) scanner. A relaxivity of 75 and 10.3 mM−1 s−1 at 1.4 and 7 T is observed, respectively. Furthermore, superconducting quantum interference device magnetometry...
Manipulation of circular polarization states of light in the ultraviolet‐visible‐near infrared range, which cannot be operated using natural materials, is of fundamental interest derived from a wide range of chirality‐associated optical, chemical and biological applications. To achieve this objective, chiral metamaterials made of metallic nanohelices (NHs) have been artificially designed and generated...
A novel mesoporous nanosheet networked hybrid comprising Co3O4 and Co3(PO4)2 is successfully synthesized using a facile and scalable method through calcinating the carbon, cobalt hydroxy carbonate, and cobalt phosphate composite precursor. Electron transfer from Co3O4 to Co3(PO4)2, together with the special networked structure and the porous nature of the nanosheets enable the Co3(PO4)2‐Co3O4 hybrid...
In article number 1700368, Taeyoon Lee, and Wooyoung Shim, and co‐workers propose a fundamentally simple method of fabricating capacitor arrays, that can outperform their costly counterparts, manufactured via microfabrication. The capacitor array, made by ubiquitous activity from our daily lives, namely, writing on a paper with a pencil, is used as a pressure sensor, which is further integrated into...
A major obstacle facing brain diseases such as Alzheimer's disease, multiple sclerosis, brain tumors, and strokes is the blood–brain barrier (BBB). The BBB prevents the passage of certain molecules and pathogens from the circulatory system into the brain. Therefore, it is nearly impossible for therapeutic drugs to target the diseased cells without the assistance of carriers. Nanotechnology is an area...
Flexible photodetectors have attracted a great deal of research interest in recent years due to their great possibilities for application in a variety of emerging areas such as flexible, stretchable, implantable, portable, wearable and printed electronics and optoelectronics. Novel functional materials, including materials with zero‐dimensional (0D) and one‐dimensional (1D) inorganic nanostructures,...
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