摘要：Herein,we report a geometrically well-defined prism assembled by two floxuridine(F)integrated RNA strands as a precise nanomedicine for chemodrug *** to the similarity between chemotherapeutic F and uridine(U),all uridines in the component RNA strands are replaced by F during their in vitro transcription *** specifically designing their sequences,F-containing S-shape tiles with the single-stranded loops are constructed and then further assemble into the RNA prism through T-junction interactions and sticky-end *** present study demonstrates that the F-integrated RNA prism can serve as an efficient platform for chemodrug delivery and anticancer *** believe that the study would help the future development of RNA-based nanomedicine in various applications.

摘要：Proteins are one of the major classes of biomolecules that execute biological functions for maintenance of *** kinds of nanostructures self-assembled from proteins have been created in nature over millions of years of evolution,including protein nanowires,layers and *** protein nanostructures can be reconstructed and equipped with desired new *** from and manipulating the self-assembly of protein nanostructures not only help to deepen our understanding of the nature of life but also offer new routes to fabricate novel nanomaterials for diverse *** review summarizes the recent research progress in this field,focusing on the characteristics,functionalization strategies,and applications of protein nanostructures.

摘要：Owing to the tremendous advantages and unique well-defined nanoscale structure,polyhedral oligomeric silsesquioxanes(POSS)have received considerable interest in the design of novel organic-inorganic hybrid nanomaterials with all manner of prominent capabilities,which is rec-ognized as a new generation of promising materials for advanced applications of material sci-ence,engineering science and biomedical *** from the recent progress in combi-nation of controlled/living polymerization and emerging click chemistry,POSS-based hybrid ma-terials with ingenious design,versatile topological structure and sophisticated multifunctionality have been successfully fabricated and developed into abundant well-defined hybrid nanostruc-tures with desired physicochemical ***-made amphiphilic molecular design and nanosized hybrid architecture provide opportunities for the self-assembly of POSS-based hybrid materials with unique hierarchical morphologies in selective *** the in-depth understanding of structure-properties relationship,POSS-based hybrid materials can achieve the modulation of precise control of self-assembling process and multi-purpose applications with improved material *** this review,we summarize the recent advances of POSS-based hybrid materials in molecular design,self-assembly behavior in solutions and poten-tial biomedical applications with main concerns on drug delivery,gene therapy,bioimaging and tissue engineering ***,future directions and remaining challenges for further advance-ment of POSS-based hybrid materials are proposed and discussed.

摘要：The construction of interlocked topologies by metal-cation-template methods has been extensively ***,construction of these species using template-free chemical self-assembly methods is hard to rationally achieve due to the inherent unpredictability of self-assembly *** this work,a strategy to construct interlocked[2]catenanes by coordination-driven template-free self-assembly is demonstrated,whereby combining rigid bidentate ligands with large conjugated-πarea units and building blocks with appropriate lengths facilitated construction of interlocked[2]catenane *** rigid bidentate ligands,L1 and L2,were chosen to self-assemble with three dinuclear building blocks B1,B2 and ***,the successful construction of three[2]catenanes demonstrated the validity of the ***[2]catenanes are the simplest of all interlocked topologies,this motif is the basis for constructing more intricate *** successful strategy may therefore lead to construction of other,more intricate topologies in the future.

摘要：A novel copper-mediated solvothermal method was proposed for synthesizing colloidal spheres of a new composition, palladium iodide （PdI2）. Typical procedure was designed to involve the introduction of cupric chloride （CuCI2） as weak oxidant. CuCI2 was found to be essential for preventing the easy formation of palladium deposits as well as facilitating the synthesis and assembly. Under the co-effect of CuC12 and the surfactant of polyvinylpyrrolidone （PVP）, neutral PdI2 colloidal spheres with narrow size distribution were successfully produced. Such ion-assisted synthetic method is believed to be prospective in producing well-constructed nanostructures.

摘要：Controllable self-assembly of noble metal nanocrystals is of broad interest for the development of highly active electrocatalysts. Here we report an efficient arginine-mediated hydrothermal approach for the high-yield synthesis of cube-like Pt nanoassemblies （Pt-CNAs） with porous cavities and rough surfaces based on the self-assembly of zero dimensional Pt nanocrystals. In this process, arginine acts as the reductant, structure directing agent, and linker between adjacent nanocrystals. Interestingly, the Pt-CNAs exhibit single-crystal structures with dominant {100} facets, as evidenced by X-ray diffraction. Based on electrocatalytic studies, the as-synthesized Pt-CNAs exhibit improved electrocatalytic activity as well as good stability and CO tolerance in the methanol oxidation reaction. The Pt-CNA＇s good performance is attributed to their unique morphology and surface structure. We believe that the synthetic strategy outlined here could be extended to other rationally designed monometallic or bimetallic nanoassemblies for use in high performance fuel cells.

摘要：Strain engineering is a powerful tool to tailor the physical properties of materials coherently stacked in an epitaxial heterostructure. Such an approach, applied to the mature field of planar heteroepitaxy, has yielded a variety of new phenomena and devices. Recently, heteroepitaxial vertically aligned nanocomposites have emerged as alternatives to planar structures. Owing to the peculiar geometry of such nanoarchitectures, efficient strain control can be achieved, opening the way to novel functionalities. In this paper, we report a very large tensile axial strain in epitaxial transition metal nanowires embedded in an oxide matrix. We show that axial strains in excess of 1.5% can be sustained over a large thickness （a few hundred nanometers） in epitaxial nanowires having ultrasmall diameters （-3-6 nm）. The axial strain depends on the diameter of the nanowires, reflecting its epitaxial nature and the balance of interface and elastic energies. Furthermore, it is experimentally shown that such strain is metastable, in agreement with the calculations performed in the framework of the Frenkel-Kontorova model. The diameter dependence and metastability provide effective ways to control the strain, an appealing feature for the design of functional nanoarchitectures.

摘要：Two strategies for the design of new pillar[5]arene-based mechanically self-interlocked molecules (MSMs) are reported here. The first strategy is based on the construction of an intermediate pseudo[1]rotaxane followed by the desired bis-[l]rotaxane. The other one is based on the construction of the desired bis-[1]rotaxane directly via a condensation reaction through host-guest interactions between a mono-functionalized pillar[5]arene and the axle. The newly synthesized bis-[1]rotaxane BR was characterized by ~1H NMR, ^(13)C NMR, 2D NMRs (~1H-^(13)C HSQC,~1H-~1H COSY and NOESY) and LC-ESI-MS,which indicated compound BR displayed an self-interlocked structure in CDCl_3. Surprisingly, the results of SEM, TEM and DLS showed that the compound BR could assemble into spherical nanoparticles in MeOH.

摘要：Over the past decade,multistable mechanical metamaterials have been widely investigated because of their novel shape reconfigurability and programmable energy *** ability to reversibly reshape among diverse stable states with different energy levels represents the most important feature of the multistable mechanical *** summarize main design strategies of multistable mechanical metamaterials,including those based on self-assembly scheme,snap-through instability,structured mechanism and geometrical frustration,with a focus on the number and controllability of accessible stable *** we concentrate on unusual mechanical properties of these multistable mechanical metamaterials,and present their applications in a wide range of areas,including tunable electromagnetic devices,actuators,robotics,and mechanical logic ***,we discuss remaining challenges and open opportunities of designs and applications of multistable mechanical metamaterials.

摘要：The one-pot assembly reaction of a trilacunary,lone-pair-containing[B-α-SbW9O33]*** with Co2+ions in an aqueous medium led to the isolation of a novel{SbO3(H2O)3}bridging,dicobalt-substituted,sandwich-type tungstoantimonate{Co2Sb2(H2O)10[B-β-SbW9O33]2}^4–(1a).This compound was structurally characterized in the solid state by single-crystal X-ray diffraction,elemental analyses,thermogravimetric analysis,and IR *** most remarkable feature was that 1a comprises two trilacunary[B-β-SbW9O33]9^-fragments trapping a novel,centrally symmetric,rhomb-like{Co2Sb2}belt with 10 terminal water *** combined with the photosensitizer[Ru(bpy)3]^2+and the sacrificial electron acceptor S2O82.,1a exhibited efficient catalytic activity for water oxidation with a remarkable turnover number(TON)of 193,initial turnover frequency(TOFinitial)of 5.3 s^-1,O2 yield of 30.8%,and quantum yield(ФQY)of 36.2%under light-driven conditions.