Chinese Chemical Letters最新文献

The battery energy density can be improved by raising the operating voltage, however, which may lead to rapid capacity decay due to the continuous electrolyte decomposition and the thickening of electrode electrolyte interphases. To address these challenges, we proposed tripropyl phosphate (TPP) as an additive−regulating Li⁺ solvation structure to construct a stable LiF–rich electrode carbonate−based electrolyte interphases for sustaining 4.6 V Li||LiCoO₂ batteries. This optimized interphases could help reduce the resistance and achieve better rate performance and cycling stability. As expected, the Li||LiCoO₂ battery retained 79.4 % capacity after 100 cycles at 0.5 C, while the Li||Li symmetric cell also kept a stable plating/stripping process over 450 h at the current density of 1.0 mA/cm² with a deposited amount of 0.5 mAh/cm².

Under “green architecture” principles, electrochromic smart windows are employed to adjust optical transmittance and indoor temperature, yet their high costs limit the wide application. Here, an electrochromic window is driven by a redox flow battery (RFB), where TOC and deposition layers are no longer needed. The transmittance of the electrochromic window is modulated by the state of oxidation (SOC) of aqueous posolyte Fe(phen)₃Cl₂, which is coupled with BTMAP-Vi negolyte in RFB. Under optimized conditions, average CE, VE, and EE reach 93.25 %, 92.61 %, and 86.35 % for RFB with a capacity fading rate of 1.57 % per cycle. 88.66 % optical modulation and 9.36 cm²/C coloration efficiency are achieved in the electrochromic process, and 72.34 % optical modulation is maintained after 12000 s. Essentially, the indoor temperature declines 3 °C for posolyte with 100 % SOC when compared with the control experiment using circulating water for a model house. This means minimum electricity of 0.0185 kWh is saved when using an air conditioner to cool a 100 m³ house, which corresponds to declined CO₂ emission (COE) of 0.0185 kg. This work provides a novel and cost-efficient strategy for modulating indoor comfort via electrochromic windows driven by RFB.

Viral epidemics pose a serious threat to global public health, making it essential to explore virus-host interactions for uncovering the pathogenesis of viral diseases and developing effective antiviral strategies. Traditional in vitro cell infection models struggle to replicate physiological microenvironment, while animal infection models may encounter obstacles such as species gap, high-cost, and ethical issues. Additionally, potential heterogeneous infection outcomes are usually inaccessible by population-based experiments. Microfluidics, as an emerging interdisciplinary platform, has proven to be a powerful tool for inquiring virus-host interactions. In this review, conventional virological methods were introduced first and remarkable advantages of microfluidics in viral cell biology were highlighted. Next, the in-depth applications of microfluidics in analyzing heterogeneity of virus-host interplays, dynamic monitoring of events related to viral life cycle, and modeling of viral infectious diseases were fully elaborated from the perspective of single-cell chip, multi-cell culture chip and organ-on-a-chip (organ chip). Finally, the opportunities and challenges in developing robust microfluidic methods for virology were discussed. Overall, this review aims to provide an overview of microfluidic-based research on virus-host interaction and promote multidisciplinary collaborations for better understanding and responding to viral threats.

Diabetic pressure ulcers (DPU) are non-healing due to vascular dysfunction and bacterial infection. Early intervention can delay ulcer progression, such as preventing the formation of full-thickness skin defects. Local administration of deferoxamine (DFO) at wound sites has been shown to promote neovascularization and enhance wound healing. However, since DPU skin wounds are not full-thickness defects and DFO is hydrophilic, enhancing its transdermal delivery is crucial for effective treatment. Photothermal ablation of stratum corneum, generated by copper sulfide nanoparticles (CuS NPs) under near-infrared (NIR) light irradiation, is a promising method to improve transdermal drug delivery. Meanwhile, CuS NPs-induced photothermal therapy offers excellent antibacterial performance. In this study, DFO and CuS NPs were incorporated into a matrix metalloproteinase (MMPs)-sensitive hydrogel. This hydrogel promotes cell adhesion and is degraded by cell-secreted MMPs, a process crucial for the controlled release of encapsulated DFO and CuS NPs. Under NIR irradiation, the stratum corneum is disrupted, facilitating transdermal DFO delivery and simultaneously eliminating infected bacteria. As a result, the essential requirements for DPU treatment, “facilitating transdermal DFO delivery, promoting angiogenesis, and inhibiting bacterial infection”, were achieved simultaneously.