摘要：Drug administration customized to individual cells could intrinsically address cancer heterogeneity and provide a safe and effective method for delivering personalized treatment. To accomplish this, we developed a smart nanodrug delivery system characterized by cancer cell-targeted drug delivery and intracellular biomarker-responsive drug activation. This system was composed of a long-nicked DNA duplex formed by tandem hybridization of two extended antisense oligonucleotides whose ends were separately blocked with a cancer cell-specific aptamer, AS1411,and a replaceable anti-biomarker probe(ABP). We demonstrated that this DNA nanodrug was directed to cancer cells with the guidance power of AS 1411 and then activated by the presence of a given intracellular biomarker. By using such a belt-and-braces strategy, this DNA nanodrug system could safely and efficiently accelerate apoptosis of target cancer cells. Moreover, since the expression level of biomarkers tends to indicate the specific physiological state of individual cells, biomarker-responsive activation of the nanodrug is expected to enable customized drug administration at the cellular level.

摘要：Cobalt-based phosphate/phosphonates are a class of promising water oxidation catalysts at ***,we reported a facile hydrothermal synthesis of various nanostructured cobalt *** is found that the number of hydroxyl group of structure-directing reagent iscrucial for the construction of 3D hierarchical structures including hierarchical nanosheet flow-er-like assemblies and nanothorn *** samples were characterized by scanningelectron microscopy,transmission electron microscopy,X-ray diffraction,infrared,and X-ray pho-toelectron spectroscopy *** can act as highly efficient electrocatalysts for the oxygenevolution reaction at neutral *** these,hierarchical cobalt phenylphosphonate nanothornflowers present excellent performance,affording a current density of 1 mA cm^-2 required a smalloverpotential of 393 *** work offers a new clue to develop high-performance metal phospho-nate/phosphate catalysts toward electrochemical water oxidation.

摘要：Luminescent biosensing in the second nearinfrared(NIR-II) region is featured with superior spatial resolution and high penetration depth by virtue of the suppressed scattering of long-wavelength photons. Hitherto, the reported NIR-II nanoprobes are mostly based on carbon nanotubes, organic fluorophores or semiconducting quantum dots. As an alternative, trivalent lanthanide ions(Ln3+) doped nanoparticles have been emerging as a novel class of promising nanoprobes. In this review, we highlight the recent progress in the design of highly efficient Ln3+-doped NIR-II nanoparticles towards their emerging bioapplications, with an emphasis on autofluorescence-free bioimaging, sensitive bioassay, and accurate temperature sensing. Moreover, some efforts and challenges towards this rapidly expanding field are envisioned.

摘要：Microbial electrolysis cells(MECs)present an attractive route for energy-saving hydrogen(H2)production along with treatment of various wastewaters,which can convert organic matter into H2 with the assistance of microbial ***,the development of such renewable technologies for H2 production still faces considerable challenges regarding how to enhance the H2 production rate and to lower the energy and the system *** this review,we will focus on the recent research progress of MEC for H2 ***,we present a brief introduction of MEC technology and the operating mechanism for H2 ***,the electrode materials including some typical electrocatalysts for hydrogen production are summarized and *** also highlight how various substrates used in MEC affect the associated performance of hydrogen *** we presents several key scientific challenges and our perspectives on how to enhance the electrochemical performance.

摘要：催化剂与助催化剂之间的低电荷分离效率严重限制了光催化性能.催化剂与助催化剂之间的强界面相互作用可以提高电荷分离效率.通过引入界面化学键增强组分间的界面相互作用是提高光催化性能的有效手段之一.本文合成了ZnIn_(2)S_(4)(ZIS)/Sv-MoS_(2)光催化剂,ZIS中的S原子与Sv-MoS_(2)中未配位Mo原子之间的键合作用形成了界面Mo–S键,这极大地提高了ZIS的光催化活性.采用不同的NaBH4蚀刻时间制备了MoS_(2-x)h.优化后的Z I S/MoS_(2)-4 h复合材料的产氢速率为7.6 mmol g^(−1)h^(−1),是原ZIS(1.6 mmol g^(−1)h^(−1))的4.75倍,是ZIS/MoS_(2)(3.7 mmol g^(−1)h^(−1))的2.05倍.非凡的光催化活性可归因于光生电子在Mo–S键的作用下更容易从ZIS转移到MoS_(2).光电测量表明,ZIS/MoS_(2)-4h具有有效的电荷转移.本工作揭示了引入界面化学键对ZIS/MoS_(2)光催化活性的影响,为通过界面工程设计优良的助催化剂提供了一种简单有效的方法.

摘要：Two cyanide bridged trinuclear compounds [Fe（bpy）2（CN）2]·[Cu（Cyclam）]2（ClO4）4·DMF 1 and [Fe（Phen）2（CN）2]·[Cu（Cyclam）]2（ClO4）4·2CH3CN·4H2O 2 （Bpy = 2,2＇- bipyridine, Phen = 1,10-phenanthroline, Cyclam = 1,4,8,11-tetraaza-cyclotetradecane, and DMF = N,N-dimethylformamide） have been synthesized by using mononuclear [Fe（Phen）2（CN）2]·2H2O and [Fe（bpy）2（CN）2]·3H2O as precursors. These two complexes crystallize in monoclinic space groups P21/c and C2/c, respectively. For 1, a = 25.164（2）, b = 12.0405（11）, c = 20.4433（15） A, β = 91.948（3）°, V = 6190.5（9） A^3, Z = 4, Mr = 1418.90, Dc = 1.522 g/cm^3, F（000） = 2936, μ = 1.161 mm^-1, the final R = 0.0722 and wR = 0.2011 for 10779 observed reflections （I 〉 2σ（I））. For 2, a = 43.5945（0）, b = 11.8447（0）, c = 29.5637（2）A, β = 120.430（11）o, V = 13162.76（9） A^3, Z = 8, Mr = 1518.48, Dc = 1.533 g/cm^3, F（000） = 6288, μ = 1.101 mm^-1, the final R = 0.0711 and wR = 0.1783 for 11262 observed reflections （I 〉 2σ（I））.

摘要：Pressing need goes ahead for accessing freshwater in insufficient supply countries and regions,which will become a restrictive factor for human development and *** recent years,solar-driven water evaporation(SDWE)systems have attracted increasing attention for their specialty in no consume conventional energy,pollution-free,and the high purity of fresh *** particular,carbon-based photothermal conversion materials are preferred light-absorbing material for SDWE systems because of their wide range of spectrum absorption and high photothermal conversion efficiency based on superconjugate *** now,many carbon-based SDWE systems have been reported,and various structures emerged and were designed to enhance light absorption,optimize heat management,and improve the efficient water transport *** this review,we attempt to give a comprehensive summary and discussions of structure progress of the carbon-based SDWE systems and their working mechanisms,including carbon nanoparticles systems,single-layer photothermal membrane systems,bi-layer structural photothermal systems,porous carbon-based materials systems,and three dimensional(3D)*** these systems,the latest 3D systems can expand the light path by allowing light to be reflected multiple times in the microcavity to increase the light absorption rate,and its large heat exchange area can prompt more water to evaporate,which makes them the promising application *** hope our review can spark the probing of underlying principles and inspiring design strategies of these carbonbased SDWE systems,and further guide device optimizations,eventually promoting in extensive practical applications in the future.

摘要：微生物电合成(microbial electrosynthesis,MES)利用可再生电力驱动微生物固定CO_(2)合成化学品,在推进碳循环经济中具有一定潜力,受到广泛关注。但是,很少有研究通过高效反应器设计来促进产乙酸并降低能耗。本研究中,新型流动电极MES反应器的总产乙酸速率[(16±1)g·m^(-2)·d^(-1)]比无粉末活性炭(powder activated carbon,PAC)对照[(8±3)g·m^(-2)·d^(-1)]高两倍。流动电极MES反应器的库伦效率为43.5%±3.1%,能量消耗为(0.020±0.005)k Wh·g^(-1),产乙酸的能量效率为18.7%±1.3%。基于PAC的流动电极能够降低水跨膜通量、传质阻力,但是对装置电压、流变行为、乙酸吸附的影响较小。流动电极MES反应器中,能量代谢相关基因高表达,Acetobacterium的丰度增加。MES反应器中同时存在用于碳固定的还原性乙酰辅酶A途径(Wood–Ljungdahl pathway,WLP)与还原性三羧酸循环途径(reductive citric acid cycle,r TCA)。堆叠型流动电极MES中的乙酸浓度达7.0 g·L^(-1)。本研究提供一种构建可扩展MES反应器的新方法,促进CO_(2)利用以及产物生成。

摘要：Conductive and adhesive hydrogels are promising materials for designing *** satisfy the high conductivity of bioelectronic devices,metal nanomaterials have been used to fabricate composite ***,the fabrication of a conductive-nanomaterial-incorporated hydrogel with high performance is a great challenge because of the easy aggregation nature of conductive nanomaterials making processing ***,we report a kind of adhesive aero-hydrogel hybrid conductor(AAHC)with stretchable,adhesive and anti-bacteria properties by in situ formation of a hydrogel network in the aerogel-silver nanowires(AgNWs)*** AgNWs with good conductivity are wellintegrated on the inner-surface of shape-memory chitosan aerogel,which created a conductive framework to allow hydrogel *** by the aerogel-silver makes the hybrid hydrogel tough and *** groups from the hydrogel allow strong adhesion to wet tissues through molecular *** inherent bacteria-killing ability of silver ions endows the conductive hydrogel with excellent anti-bacteria *** proposed facile strategy of aerogel-assisted assembly of metal nanomaterials with hydrogel opens a new route to incorporate functional nanoscale building blocks into hydrogels.

摘要：The electrochemical reduction of CO_(2) towards hydrocarbons is a promising technology that can utilize CO_(2) and prevent its atmospheric accumulation while simultaneously storing renewable en‐***,current CO_(2) electrolyzers remain impractical on a large scale due to the low current densities and faradaic efficiencies(FE)on various *** this study,hybrid HKUST‐1 metal‐organic framework‒fluorinated imidazolium‐based room temperature ionic liquid(RTIL)electrocatalysts are designed to selectively reduce CO_(2) to CH_(4).An impressive FE of 65.5%towards CH_(4) at-1.13 V is achieved for the HKUST‐1/[BMIM][PF_(6)]hybrid,with a stable FE greater than 50%maintained for at least 9 h in an H‐*** observed improvements are attributed to the increased local CO_(2) concentration and the improved CO_(2)‐to‐CH_(4) thermodynamics in the presence of the RTIL molecules adsorbed on the HKUST‐1‐derived Cu *** findings offer a novel approach of immobilizing RTIL co‐catalysts within porous frameworks for CO_(2) electroreduction applications.