摘要：Recently,in-situ polymerization inside living cells has attracted much attention due to the efficient cellular internalization and elevated drug ***,the lack of tracking of the in-situ polymerization process and the unclear effects of polymerization on cellular functions restrict its biomedical ***,we designed a Y-shaped diacetylene-containing lipidated peptide amphiphile(YDLPA1)with positive charges,which underwent in-situ polymerization initiated by reactive oxygen species in the intracellular *** comparison,zwitterionic YDLPA2 and negatively charged Y-DLPA3 were polymerized in aqueous solution,but cannot polymerize in the intracellular *** polymerized Y-DLPA1 with red fluorescence provides a platform to label cells for long-term tracking *** polymerization reaction induced tumor cell apoptosis,increased cell viscosity and decreased cell motility,which potentially inhibited tumor metastasis and served as a novel antitumor *** work provides a novel strategy to track in-situ polymerization process and modulate cell biofunctions.

摘要：Efficient charge separation and rapid interfacial reaction kinetics are crucial factors that determine the efficiency of photocatalytic hydrogen ***,a fascinating 2D heterojunction photocatalyst with superior photocatalytic hydrogen evolution performance–holey C_(3)N_(4)nanosheets nested with TiO_(2)nanocrystals(denoted as HCN/TiO_(2))–is designed and fabricated via an in situ exfoliation and conversion *** HCN/TiO_(2)is found to exhibit an ultrathin 2D heteroarchitecture with intimate interfacial contact,highly porous structures and ultrasmall TiO_(2)nanocrystals,leading to drastically improved charge carrier separation,maximized active sites and the promotion of mass transport for ***,the HCN/TiO_(2)delivers an impressive hydrogen production rate of 282.3 lmol h^(-1)per10 mg under AM 1.5 illumination and an apparent quantum efficiency of 13.4%at a wavelength of 420 nm due to the synergetic enhancement of surface reactions and charge *** present work provides a promising strategy for developing high-performance 2D heterojunctions for clean energy applications.

摘要：Herein,we report the excellent De-NO_(x)performance of La0.7Sr0.3MnO3(LSM)perovskite-supported Pd catalysts(Pd-LSM)in alternating lean-burn/fuel-rich atmospheres using C3H6 as reductant and describe the in situ activation of the Pd catalysts via metal-support interaction(MSI)*** NO_(x)reduction conversion of the Pd-LSM catalyst increased significantly from 56.1%to 90.1%and the production of N2O was *** results demonstrated that this behavior was mainly attributed to the in situ transformation of Pd2+into Pd0 during the *** generated Pd0 species could readily activate the C3H6 reductant and achieve an eight-fold higher turnover frequency than Pd2+for the reduction of NO_(x).Moreover,excessive MSIs inhibited the in situ generation of Pd0,and thereby,lowered the De-NO_(x)activity of the catalyst even at high Pd *** addition,the Pd-LSM catalysts exhibited much higher S tolerance than conventional Al_(2)O_(3)-supported *** study provides a new approach for analyzing and designing highly active metal catalysts operated under dynamic alternating oxidizing/reducing atmospheric conditions.

摘要：Carbonyl compounds with elements of C, H, and O and reversible redox-active centers are promising elec- trode materials in rechargeable batteries owing to their high theoretical capacity, structure flexibility and resources abun- dance. However, the low conductivity and the dissolution of active molecules in organic electrolyte limit the practical ap- plication. Immobilizing the carbonyls on graphene provides a simple approach to address these two issues. However, most reported interaction between carbon-based substrates and carbonyl compounds is weak π-π interaction, which is not strong enough to prohibit the detachment of active ma- terials from carbon surface, and thus leading to undesirable cycling performance. Herein, we applied the first principle calculations to study the carbonyls-graphene interaction and found that the weak rc-a interaction can be rationally converted to the strong a-Li-~~ interaction via introducing the groups containing Li atoms. The introduced Li atoms can cooperatively bind with the two aromatic a components through the covalent Li-carbonyl compounds interaction and Li-graphene interaction. The concept of ~（-Li-Tr interaction provides a versatile method to suppress the dissolution of active materials and increase the electronic conductivity at the same time, which gains insight into the design of organic electrode materials for rechargeable batteries with high performance.

摘要：渗透性和离子筛分能力是决定纳滤膜分离性能的主要指标.扩大渗透分离层的表面积不仅是提升膜通量的有效途径,还保持了盐的截留效果.受氨基/亚胺与酰氯缩合交联形成致密的聚酰胺网络的启发,我们提出了一种策略:将多孔的卟啉-苯胺共轭微孔聚合物(PACMP)接枝到聚酰胺膜上,从而增大纳滤膜的分离表面积.通过一步界面聚合,制备了一种超渗透的共轭微孔聚合物-聚酰胺复合膜(CPCMs),其水通量为61.8 L m^(−2) h^(−1),对盐(Na_(2)SO_(4))的截留率高于91.6%.此外,由于PACMPs中卟啉基团产生的活性氧,原位光激发单线态氧1O2可杀死98.5%的大肠杆菌和99.7%的金黄色葡萄球菌,从而赋予了CMP-聚酰胺复合膜良好的抗菌性.

摘要：Owing to the excellent redox reversibility and structural diversity,polytriphenylamine(PTPAn)has been regarded as one of the promising cathode candidates for sodium-ion ***,it still suffers from the bulk aggregation and low operating capacity in practical *** by the in-situ polymerization,leaf-like PTPAn nanosheets are uniformly introduced on the surface of carbon nanofibers(CNFs)to form the free-standing CNF@PTPAn composite ***,the formation mechanism of the leaf-on-branch structure of CNF@PTPAn composites is systematically explored,confirming that the controlling of oxidation rate and growth degree plays crucial roles in tuning the morphology and active material content of the composite *** by the capacity-cutting analysis,the effective coupling between the active PTPAn and conductive CNFs can provide fast electron/ion-shuttling channels and deepen the electrochemical reaction *** 50mAg^(-1),the capacity of the optimized CNF@PTPAn composite can reach 105mAh g^(-1),with a stable rate capability of 78mAh g^(-1)even at 400mAg^(-1)after 500 cycles in a half *** detailed kinetic analysis confirms that the ion-storage behaviors in the lowvoltage region can be tailored for the improved capacitive contribution and diffusion ***,the flexible CNF-based full cell with CNF@PTPAn as the cathode and CNFs as the anode exhibits a high energy density of 60Wh kg^(-1)at 938Wkg^(-1).Based on this,the rational design is expected to provide more possibilities to obtain advanced freestanding electrode systems.

摘要：In this paper, we report a one-step electrodeposited synthesis strategy for directly growing NiCoSe2/Ni3Se2 lamella arrays(LAs) on N-doped graphene nanotubes(N-GNTs) as advanced free-standing positive electrode for asymmetric supercapacitors. Benefiting from the synergetic contribution between the distinctive electroactive materials and the skeletons, the as-constructed N-GNTs@NiCoSe2/Ni3-Se2LAs present a specific capacitance of ~1308 F g^-1 at a current density of 1 A g^-1. More importantly, the hybrid electrode also reveals excellent rate capability(~1000 F g^-1 even at 100 A g^-1) and appealing cycling performance(~103.2% of capacitance retention over 10,000 cycles). Furthermore, an asymmetric supercapacitor is fabricated by using the obtained N-GNTs@NiCoSe2/Ni3Se2LAs and active carbon(AC) as the positive and negative electrodes respectively,which holds a high energy density of 42.8 W h kg^-1 at 2.6 k W kg^-1, and superior cycling stability of ~94.4% retention over 10,000 cycles. Accordingly, our fabrication technique and new insight herein can both widen design strategy of multicomponent composite electrode materials and promote the practical applications of the latest emerging transition metal selenides in next-generation high-performance supercapacitors.

摘要：Rechargeable Li batteries as electrochemical energy storage and conversion devices are continuously changing human life. In order to meet the increasing demand for energy and power density, it is essential and urgent to exploit the electrode materials with high capacity and fast charge transfer(for Li-ion and Li-S batteries) and electrocatalysts with high activity(for rechargeable Li-O2 batteries). The high capacity is attributed to high electron transfer number and low molecular weight of the electrode materials. Combined with proper nanostructure design, the electronic transfer and ionic conductivity will be improved. This review summarizes recent efforts to apply electrode materials for Li-ion batteries with multi-electron reaction, Li-S batteries, and efficient electrocatalysts for Li-O2 batteries. The methods to enhance the cycling and rate performance have been discussed in detail. Advanced rechargeable Li batteries with multi-electron reaction will become the research emphasis in the future.

摘要：Photocatalytic water splitting with simultaneous degradation of organic pollutants is an effective strategy to alleviate the increasingly serious energy and environmental ***,the photocatalytic activity is restricted by the high charge recombination rate and limited sunlight ***,black phosphorus(BP)with a broad sunlight response range was utilized as a photosensitizer to enhance the photocatalytic performance of the Au/carbon nitride(CN)*** as-prepared BP/Au/CN exhibited a significantly enhanced H_(2) generation rate of 1400.8µmol h^(−1) g^(−1) under UV-vis light irradiation,which is almost 70 times higher than that of bare CN and BP/CN and 2 folds higher than that of the Au/CN ***,the optimal BP/Au/CN sample presented a waste-to-hydrogen production rate of 195.8µmol h^(−1) g^(−1) with the degradation of bisphenol A,verifying the synergistic effect of the ternary *** photocatalytic mechanism was systematically studied by the combination of experiments and theoretical *** improved photocatalytic performance was derived from the overall sunlight absorption ability of BP,effective electron transfer media and plasmonic character of Au nanoparticles,as well as the matched work function and strong interaction of the three components.A unidirectional electron transfer from BP to Au and then to CN was established,which effectively improved the charge transfer capability,resulting from the appropriate Ohmic contact of Au and BP and the Schottky barrier constructed in Au/CN hybrid.

摘要：设计和制备具有优异稳定性和高活性的催化剂对于提高锂-氧气电池的性能至关重要.由于其可调节的结构及促进氧还原反应和析氧反应动力学的有效性,异质结构催化剂引起了广泛的研究兴趣.在这项工作中,CuCo_(2)S_(4)/CoS_(1.097)多元金属硫化物被证明是锂-氧气电池氧电极反应的有效电催化剂.密度泛函理论计算表明,CuCo_(2)S_(4)/CoS_(1.097)的电子结构在异相界面处受到调控,有利于优化氧电极反应过程中间体的吸附,最终加速氧电极反应动力学.实验结果表明,基于CuCo_(2)S_(4)/CoS_(1.097)的锂-氧气电池在100 m A g^(-1)下具有26,727.8 m A h g^(-1)的高比容量和超过267次循环的出色耐久性.该工作为锂-氧气电池高性能正极材料的设计和构造提供了新视角.