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Peptide self‐assembly is an attractive route for the synthesis of intricate organic nanostructures that possess remarkable structural variety and biocompatibility. Recent studies on peptide‐based, self‐assembled materials have expanded beyond the construction of high‐order architectures; they are now reporting new functional materials that have application in the emerging fields such as artificial...
The nature and dynamics of bonding between Fe, Ru, Os, and single‐walled carbon nanotubes (SWNTs) is studied by aberration‐corrected high‐resolution transmission electron microscopy (AC‐HRTEM). The metals catalyze a wide variety of different transformations ranging from ejection of carbon atoms from the nanotube sidewall to the formation of hollow carbon shells or metal carbide within the SWNT, depending...
Developing high‐energy‐density electrodes for lithium ion batteries (LIBs) is of primary importance to meet the challenges in electronics and automobile industries in the near future. Conversion reaction‐based transition metal oxides are attractive candidates for LIB anodes because of their high theoretical capacities. This review summarizes recent advances on the development of nanostructured transition...
Cancer‐targeted nanotechnology is experiencing the trend of finding new materials with multiple functions for imaging and therapeutic applications. With the rapid development of the related fields, there exists a large number of reports regarding theranostic nanomedicine, decreasing the gap between cancer diagnosis and treatment with minimized separate comprehensions. In order to present an overview...
Understanding the targeted cellular uptake of nanomaterials is an essential step to engineer and program functional and effective biomedical devices. In this respect, the targeting and ultrafast uptake of zeolite nanocrystals functionalized with Cetuximab antibodies (Ctxb) by cells overexpressing the epidermal growth factor receptor are described here. Biochemical assays show that the cellular uptake...
On page 5431, L. De Cola, D. Bonifazi, and co‐workers report the fast targeting and cancer cells uptake of nanozeolite/Cetuximab bioconjugates. The effects are depicted on the front cover, which highlights the antibody‐dependent and receptor‐mediated endocytosis of this luminescent nanomaterial by the cancer cells. This hasty internalization profile can be exploited to reduce the nanomaterial clearance...
A protocol to quantify the distribution of surface atoms of concave nanocatalysts according to their coordination number is proposed. The 3D surface of an Au@Pd concave nanocube is reconstructed and segmented. The crystallographic coordinates and low‐coordinate surface atom densities of the concave facets are determined. The result shows that 32% of the surface atoms are low‐coordinated, which may...
On page 6332, X. Y. Zhong, X. X. Ke, and co‐workers develop a method that uses 3D electron tomography to quantify the distribution of surface atoms of a Au@Pd concave nanocube according to their coordination number. The quantification of low‐coordinated surface atoms is essential to correlate the catalytic properties to the surface structures of real catalysts and to bridge the “materials gap”.
Two dimensional arrays of nanoparticles often exhibit interesting optical and chemical properties, but are difficult to prepare. Large freestanding sheets of 2‐D nanoparticle arrays anchored onto flexible polymer substrates are fabricated by S. E. J. Bell and co‐workers in article number 1602163, through a simple and elegant one‐pot selfassembly technique. The particles are partly exposed even in...
2D arrays of metal nanoparticles formed at liquid–liquid interfaces have been fixed in situ to a thin polymer support to create freestanding large (cm2) composite films where the particles remain exposed rather than being trapped within the polymer. Applications of these flexible robust 2D nanoparticle arrays as sensors, thin film conductors, antimicrobial coatings, and dip‐in catalysts are shown...
A tetrahedral DNA nanostructure (TDN), a novel type of DNA nanomaterials, is able to regulate chondrocyte phenotype and promote chondrocyte proliferation, as presented in article number 1602770 by Yunfeng Lin and co‐workers. The regulation of cell phenotype is related with down‐regulating the Notch signaling pathway. This discovery sheds light on the potential of TDNs in future medicine, especially...
Utilizing biomaterials to regulate the phenotype and proliferation of chondrocytes is a promising approach for effective cartilage tissue regeneration. Recently, a significant amount of effort has been invested into directing chondrocytes toward a desired location and function by utilizing biomaterials to control the dedifferentiation and phenotypic loss of chondrocytes during in vitro monolayer culture...
A nonporous laminar coordination polymer of formula [Cu2I2(2‐aminopyrazine)]n is prepared by direct reaction between CuI and 2‐aminopyrazine, two industrially available building blocks. The fine tuning of the reaction conditions allows obtaining [Cu2I2(2‐aminopyrazine)]n in micrometric and nanometric sizes with same structure and composition. Interestingly, both materials show similar reversible thermo‐...
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,...
In situ transmission electron microscopy (TEM) allows one to investigate nanostructures at high spatial resolution in response to external stimuli, such as heat, electrical current, mechanical force and light. This review exclusively focuses on the optical, optoelectronic and photocatalytic studies inside TEM. With the development of TEMs and specialized TEM holders that include in situ illumination...
Template synthesis represents an important class of nanofabrication methods. Herein, recent advances in nanomaterial preparation by extrusion through nanoporous membranes that preserve the template membrane without sacrificing it, which is termed as “non‐sacrificing template synthesis,” are reviewed. First, the types of nanoporous membranes used in nanoporous membrane extrusion applications are introduced...
Interfacial self‐assembly is a powerful organizational force for fabricating functional nanomaterials, including nanocarriers, for imaging and drug delivery. Herein, the interfacial self‐assembly of pH‐responsive metal–phenolic networks (MPNs) on the liquid–liquid interface of oil‐in‐water emulsions is reported. Oleic acid emulsions of 100–250 nm in diameter are generated by ultrasonication, to which...
Protein‐based electronic materials have numerous potential advantages with respect to sustainability and biocompatibility over electronic materials that are synthesized using harsh chemical processes and/or which contain toxic components. The microorganism Geobacter sulfurreducens synthesizes electrically conductive protein nanowires (e‐PNs) with high aspect ratios (3 nm × 10–30 µm) from renewable...
Photo‐electrochemical water splitting represents a green and environmentally friendly method for producing solar hydrogen. Semiconductor nanomaterials with a highly accessible surface area, reduced charge migration distance, and tunable optical and electronic property are regarded as promising electrode materials to carry out this solar‐to‐hydrogen process. Since most of the photo‐electrochemical...
Several surface engineering methods have been demonstrated to be effective in tuning the surface properties of nanomaterials and consequently improving their photo‐ and electrochemical stability, charge separation/recombination efficiency, and kinetics of surface redox reactions for photoelectrochemical water splitting. In article number 1803746, Yat Li and co‐workers highlight and compare the nine...
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