Combination photothermal therapy (PTT)/chemotherapy has become an emerging cancer treatment strategy in recent years. However, one of the important challenges in the development of nanomedicines is escaping immune recognition and the phagocytosis by the reticuloendothelial system (RES) to ultimately maximize tumor accumulation. In this work, a cell membrane-coated magnetically targeted drug delivery nanosystem was developed for synergistic PTT/chemotherapy of cancer. Importantly, this nanosystem can cleverly escape identification and clearance from the immune system, effectively prolong the blood circulation time and accurately accumulate in the target tumor tissues. This provides a new strategy to realize extraordinary antitumor effect by a unique design with cell membrane cloaking, magnetic targeting, drug delivery and synergistic PTT/chemotherapy.The C-glycosylation of C-nucleophiles including allyltrimethylsilane, silyl enol ethers and phenols with N-(glycosyloxy)acetamides as glycosyl donors has been realized. This protocol provides a convenient and practical route for the synthesis of alkyl C-glycosides and aryl 2-deoxy-β-C-glycosides under mild reaction conditions.Design and fabrication of highly efficient and robust noble-metal-free bifunctional electrocatalysts for overall water splitting in alkaline media is challenging. Herein, we report a unique bifunctional electrocatalyst consisting of three-dimensional (3D) hierarchical Mo-doped CoP3 nanosheet arrays on carbon cloth (Mo-CoP3 NAs@CC) fabricated by a facile electrodeposition process and the subsequent PH3 plasma-assisted phosphorization. Benefiting from the hierarchical nanostructure and doping effect of Mo, the optimal Mo-CoP3-2@CC electrode demonstrates excellent HER and OER catalytic activity with an overpotential of 62 and 300 mV at 10 mA cm-2, respectively, and reasonable stability up to 20 h in 1.0 M KOH. Impressively, when Mo-CoP3-2@CC is used as both HER and OER electrodes in an alkaline electrolyzer, a current density of 10 mA cm-2 is achieved at a cell voltage of only 1.65 V, and the stable water-splitting current is maintained for 25 h, showing great promise for practical applications.Correction for 'Preparation of electrospray ALG/PDA-PVP nanocomposites and their application in cancer therapy' by Yangjie Xu et al., Soft Matter, 2020, 16, 132-141.We fabricated heterogeneous iron-nickel compound/reduced graphene oxide (RGO) composites to obtain lightweight and high-efficiency microwave absorption materials with tunable absorption frequency. Using a facile hydrothermal route in combination with calcination at varying temperatures of 500-700 °C, the magnetic components Fe0.64Ni0.36, Fe0.64Ni0.36@Fe2Ni2N, and Fe2Ni2N were obtained. Due to strong interfacial polarization and dipole polarization as well as the conductive network formed by the substantial number of interfaces, all the magnetic RGO hybrids presented remarkable electromagnetic wave attenuation ability even when the filler content was only 5.2 wt%. More importantly, the optimization of reflection loss and tunable absorption frequency could be successfully realized by tuning the hybrid architecture and electromagnetic properties. This work reveals the mechanism of polarization-related dielectric relaxation of RGO, which provides new opportunities for designing lightweight and highly efficient microwave-absorbing materials by fully utilizing the hetero-interfacial effects.In this work, we demonstrate that coordination interactions between Fe3+ and cucurbit[7]uril (CB[7]) can be utilised to build up defined nanoscale spacing layers in metallic nanosystems. We begin by characterising the layer-by-layer deposition of CB[7] and FeCl3·6H2O coordination layers through the use of a Quartz-Crystal Microbalance (QCM) and contact angle measurements. We then apply this layered structure to accurately control the spacing, and thus optical properties, of gold nanoparticles in a Nanoparticle-on-Mirror (NPoM) structure, which is demonstrated via normalising plasmon resonance spectroscopy.Bilayer graphene possesses new degrees of freedom for modulating the electronic band structure, which makes it a tempting solution for overcoming the intrinsic absence of sizeable bandgaps in graphene and designing next-generation devices for post-silicon electronics. By twisting bilayer graphene, interlayer hybridized and twist angle-dependent van Hove singularities in the electronic band structure are generated and expected to facilitate the vertical tunneling transport between bilayer graphene. Herein, based on the ab initio quantum transport simulations, we designed a novel all-metallic vertical quantum transport architecture with the twisted bilayer graphene as the transport channel region and Au electrodes as the source/drain contacts to investigate the twist angle-dependent vertical transport properties. https://www.selleckchem.com/products/tat-beclin-1-tat-becn1.html Enhancement in the ION/IOFF ratio by 2 orders of magnitude can be achieved by simply twisting the bilayer graphene. Compared to the traditional gate voltage modulation, which tunes the Fermi energy level alone, the current strategy shifts the Fermi energy level of the channel region away from the Dirac cone, moves the Fermi level and the van Hove singularities towards each other and promotes the vertical quantum transport due to the interlayer electronic hybridization. This dual modulation strategy of this novel mechanical gating device thus provides a potential new solution for designing novel vertical transistors.A novel tetraphenylethene (TPE) derivative-decorated lanthanide nanomaterial NaLnF4 (denoted as TPEBA-Ln, Ln = Gd3+, Tb3+ and Eu3+) was hydrothermally synthesized using (4-(1,2,2-triphenylvinyl)phenyl) boronic acid (TPEBA)-modified polyvinyl alcohol (PVA) as a coating ligand. Interestingly, the aggregation-induced emission (AIE) of the TPE moiety was activated because the intramolecular rotation of TPEBA was restricted via the esterification of TPEBA with PVA. More excitingly, it was found for the first time that the TPEBA-based ligand could further act as a donor and transfer energy to the lanthanide nanoparticle (Ln = Eu3+ and Tb3+) acceptor in this TPEBA-Ln system. Encouragingly, TPEBA had advantageous effects on the emission of the composite material, in which a more effective energy transfer process from the ligand to lanthanide ions was observed when TPEBA tended to be isolated on the surface of the nanoparticles. Furthermore, the material combining different ratios of TPEBA, Tb3+ and Eu3+ displayed tunable luminescence properties covering the wavelength range from 400 nm to 700 nm in the visible region due to the established energy transfer path (tetraphenylethene derivative-Tb3+-Eu3+), which provided a facile and effective strategy to obtain potential full-color emitters.
Combination photothermal therapy (PTT)/chemotherapy has become an emerging cancer treatment strategy in recent years. However, one of the important challenges in the development of nanomedicines is escaping immune recognition and the phagocytosis by the reticuloendothelial system (RES) to ultimately maximize tumor accumulation. In this work, a cell membrane-coated magnetically targeted drug delivery nanosystem was developed for synergistic PTT/chemotherapy of cancer. Importantly, this nanosystem can cleverly escape identification and clearance from the immune system, effectively prolong the blood circulation time and accurately accumulate in the target tumor tissues. This provides a new strategy to realize extraordinary antitumor effect by a unique design with cell membrane cloaking, magnetic targeting, drug delivery and synergistic PTT/chemotherapy.The C-glycosylation of C-nucleophiles including allyltrimethylsilane, silyl enol ethers and phenols with N-(glycosyloxy)acetamides as glycosyl donors has been realized. This protocol provides a convenient and practical route for the synthesis of alkyl C-glycosides and aryl 2-deoxy-β-C-glycosides under mild reaction conditions.Design and fabrication of highly efficient and robust noble-metal-free bifunctional electrocatalysts for overall water splitting in alkaline media is challenging. Herein, we report a unique bifunctional electrocatalyst consisting of three-dimensional (3D) hierarchical Mo-doped CoP3 nanosheet arrays on carbon cloth (Mo-CoP3 NAs@CC) fabricated by a facile electrodeposition process and the subsequent PH3 plasma-assisted phosphorization. Benefiting from the hierarchical nanostructure and doping effect of Mo, the optimal Mo-CoP3-2@CC electrode demonstrates excellent HER and OER catalytic activity with an overpotential of 62 and 300 mV at 10 mA cm-2, respectively, and reasonable stability up to 20 h in 1.0 M KOH. Impressively, when Mo-CoP3-2@CC is used as both HER and OER electrodes in an alkaline electrolyzer, a current density of 10 mA cm-2 is achieved at a cell voltage of only 1.65 V, and the stable water-splitting current is maintained for 25 h, showing great promise for practical applications.Correction for 'Preparation of electrospray ALG/PDA-PVP nanocomposites and their application in cancer therapy' by Yangjie Xu et al., Soft Matter, 2020, 16, 132-141.We fabricated heterogeneous iron-nickel compound/reduced graphene oxide (RGO) composites to obtain lightweight and high-efficiency microwave absorption materials with tunable absorption frequency. Using a facile hydrothermal route in combination with calcination at varying temperatures of 500-700 °C, the magnetic components Fe0.64Ni0.36, Fe0.64Ni0.36@Fe2Ni2N, and Fe2Ni2N were obtained. Due to strong interfacial polarization and dipole polarization as well as the conductive network formed by the substantial number of interfaces, all the magnetic RGO hybrids presented remarkable electromagnetic wave attenuation ability even when the filler content was only 5.2 wt%. More importantly, the optimization of reflection loss and tunable absorption frequency could be successfully realized by tuning the hybrid architecture and electromagnetic properties. This work reveals the mechanism of polarization-related dielectric relaxation of RGO, which provides new opportunities for designing lightweight and highly efficient microwave-absorbing materials by fully utilizing the hetero-interfacial effects.In this work, we demonstrate that coordination interactions between Fe3+ and cucurbit[7]uril (CB[7]) can be utilised to build up defined nanoscale spacing layers in metallic nanosystems. We begin by characterising the layer-by-layer deposition of CB[7] and FeCl3·6H2O coordination layers through the use of a Quartz-Crystal Microbalance (QCM) and contact angle measurements. We then apply this layered structure to accurately control the spacing, and thus optical properties, of gold nanoparticles in a Nanoparticle-on-Mirror (NPoM) structure, which is demonstrated via normalising plasmon resonance spectroscopy.Bilayer graphene possesses new degrees of freedom for modulating the electronic band structure, which makes it a tempting solution for overcoming the intrinsic absence of sizeable bandgaps in graphene and designing next-generation devices for post-silicon electronics. By twisting bilayer graphene, interlayer hybridized and twist angle-dependent van Hove singularities in the electronic band structure are generated and expected to facilitate the vertical tunneling transport between bilayer graphene. Herein, based on the ab initio quantum transport simulations, we designed a novel all-metallic vertical quantum transport architecture with the twisted bilayer graphene as the transport channel region and Au electrodes as the source/drain contacts to investigate the twist angle-dependent vertical transport properties. https://www.selleckchem.com/products/tat-beclin-1-tat-becn1.html Enhancement in the ION/IOFF ratio by 2 orders of magnitude can be achieved by simply twisting the bilayer graphene. Compared to the traditional gate voltage modulation, which tunes the Fermi energy level alone, the current strategy shifts the Fermi energy level of the channel region away from the Dirac cone, moves the Fermi level and the van Hove singularities towards each other and promotes the vertical quantum transport due to the interlayer electronic hybridization. This dual modulation strategy of this novel mechanical gating device thus provides a potential new solution for designing novel vertical transistors.A novel tetraphenylethene (TPE) derivative-decorated lanthanide nanomaterial NaLnF4 (denoted as TPEBA-Ln, Ln = Gd3+, Tb3+ and Eu3+) was hydrothermally synthesized using (4-(1,2,2-triphenylvinyl)phenyl) boronic acid (TPEBA)-modified polyvinyl alcohol (PVA) as a coating ligand. Interestingly, the aggregation-induced emission (AIE) of the TPE moiety was activated because the intramolecular rotation of TPEBA was restricted via the esterification of TPEBA with PVA. More excitingly, it was found for the first time that the TPEBA-based ligand could further act as a donor and transfer energy to the lanthanide nanoparticle (Ln = Eu3+ and Tb3+) acceptor in this TPEBA-Ln system. Encouragingly, TPEBA had advantageous effects on the emission of the composite material, in which a more effective energy transfer process from the ligand to lanthanide ions was observed when TPEBA tended to be isolated on the surface of the nanoparticles. Furthermore, the material combining different ratios of TPEBA, Tb3+ and Eu3+ displayed tunable luminescence properties covering the wavelength range from 400 nm to 700 nm in the visible region due to the established energy transfer path (tetraphenylethene derivative-Tb3+-Eu3+), which provided a facile and effective strategy to obtain potential full-color emitters.
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