In this article, a novel flower-like WO 3 -In 2 O 3 hollow heterostructure was successfully constructed by using an in situ etching method. The morphology characteristics revealed that the In 2 O 3 nanoparticles with average sizes of 50 nm were evenly grown at the mesoporous WO 3 hollow microsphere composed with self-assembly WO 3 nanoplates (WO 3 NPs). In order to evaluate advancements of well-designed heterojunction architecture, the gas sensing properties of varying sensors fabricated by pristine WO 3 , flower-like WO 3 hollow sphere, and flower-like WO 3 -In 2 O 3 hollow heterojunction to acetone gas were systematically investigated. The gas sensing consequences demonstrated that such SH-WO 3 -In 2 O 3 structure achieved a higher acetone sensing performance with respect to that of pristine WO 3 and SH-WO 3 sensing materials, which could be ascribed to the promising synergistic effect between admirable flower-hollow structure and n-n type heterojunction configuration. More importantly, this investigation on fabricating well-designed WO 3 -In 2 O 3 heterostructure may offer new insight and useful strategy to improve the sensing performance for certain metal oxide semiconductor-based gas sensing materials by reasonably utilizing the synergistic effect of structure and component. • A flower-like In 2 O 3 -WO 3 hollow heterostructure is fabricated. • The SH-In 2 O 3 -WO 3 based sensor achieves excellent sensitivity and stability. • The synergistic effect between flower-hollow structure and n-n heterojunction facilitates the gas sensing performance. 

Self-templated flower-like WO3-In2O3 hollow microspheres for conductometric acetone sensors

Advancing biomedical applications via manipulating intersystem crossing

The performances of second near-infrared (NIR-II) organic phototheranostic agents (OPTAs) depend on both molecular structure and molecular packing when used as nanoparticles (NPs). Herein, we proposed a facile structural isomerization-induced 3D spatial donor (D)-acceptor (A) interlocked network for achieving NIR-II OPTAs. Two isomers, 4MNVDPP and 6MNVDPP were synthesized and formulated into NPs. 6MNVDPP with larger electrostatic potential difference exhibits compact 3D spatial D-A interlocked network in crystal, while 4MNVDPP forms 2D D-D type J-aggregates. Thus, 6MNVDPP NPs show red-shifted NIR absorption and larger molar extinction coefficient than 4MNVDPP NPs. Thanks to the typical NIR-II emission, superior photothermal-stability, high photothermal conversion efficiency (89%) and reactive oxygen species production capacity, 6MNVDPP NPs exhibit outstanding NIR-II tiny capillary vasculature/tumor imaging ability and synergistic photothermal/photodynamic anti-cancer effect in vivo.

A Facile Structural Isomerization-Induced 3D Spatial D-A Interlocked Network for Achieving NIR-II Phototheranostic Agents.

Inorganic lead-based halide perovskites: From fundamental properties to photovoltaic applications

https://doi.org/10.1016/j.bioactmat.2022.11.013

Nanoparticles-based phototherapy systems for cancer treatment: Current status and clinical potential

Resistive-type VOCs and pollution gases sensor based on SnO2: A review

Immunotherapy has received tremendous attention for tumor treatment, but the efficacy is greatly hindered by insufficient tumor‐infiltration of immune cells and immunosuppressive tumor microenvironment. The strategy that can efficiently activate cytotoxic T lymphocytes and inhibit negative immune regulators will greatly amplify immunotherapy outcome, which is however very rare. Herein, a new kind of semiconducting polymer (SP) nanoparticles is developed, featured with surface‐mimicking protein secondary structure (SPSS NPs) for self‐synergistic cancer immunotherapy by combining immunogenic cell death (ICD) and immune checkpoint blockade therapy. The SPs with excellent photodynamic property are synthesized by rational fluorination, which can massively induce ICD. Additionally, the peptide antagonists are introduced and self‐assembled into β‐sheet protein secondary structures on the photodynamic NP surface via preparation process optimization, which function as efficient lysosome‐targeting chimaeras (LYTACs) to mediate the degradation of programmed cell death ligand‐1 (PD‐L1) in lysosome. In vivo experiments demonstrate that SPSS NPs can not only elicit strong antitumor immunity to suppress both primary tumor and distant tumor, but also evoke long‐term immunological memory against tumor rechallenge. This work introduces a new kind of robust immunotherapy agents by combining well‐designed photosensitizer‐based ICD induction and protein secondary structures‐mediated LYTAC‐like multivalence PD‐L1 blockade, rendering great promise for synergistic immunotherapy.

Semiconducting Polymer Nanoparticles with Surface‐Mimicking Protein Secondary Structure as Lysosome‐Targeting Chimaeras for Self‐Synergistic Cancer Immunotherapy

In recent years, organic-inorganic metal halide (OIH) perovskites have become a popular material of increasing interest. Due to the presence of organic cations, OIH perovskites suffer from chemical instability and...

/pdf/progress-in-the-preparation-and-application-of-cspbx3-1w79ymj5.pdf

Progress in the preparation and application of CsPbX3 perovskites

Molybdenum disulfide (MoS2) is a two-dimensional (2D) layered material with a graphene-like structure that has attracted attention because of its large specific surface area and abundant active sites. In addition, the compounding of MoS2 with other materials can enhance the performance in applications such as batteries, catalysts, and optoelectronic devices, etc. MoS2 is prepared by various methods, among which chemical deposition and hydrothermal methods are widely used. In this review, we focus on summarizing the applications of MoS2 and MoS2 composite nanomaterials in rechargeable ion batteries, catalysts for water splitting and gas sensors, and briefly outline the preparation methods.

/pdf/synthesis-of-mos2-based-nanostructures-and-their-2tkxhrcf.pdf

Synthesis of MoS2-based nanostructures and their applications in rechargeable ion batteries, catalysts and gas sensors: a review

Gas sensors play an irreplaceable role in industry and life. Different types of gas sensors, including metal-oxide sensors, are developed for different scenarios. Titanium dioxide is widely used in dyes, photocatalysis, and other fields by virtue of its nontoxic and nonhazardous properties, and excellent performance. Additionally, researchers are continuously exploring applications in other fields, such as gas sensors and batteries. The preparation methods include deposition, magnetron sputtering, and electrostatic spinning. As researchers continue to study sensors with the help of modern computers, microcosm simulations have been implemented, opening up new possibilities for research. The combination of simulation and calculation will help us to better grasp the reaction mechanisms, improve the design of gas sensor materials, and better respond to different gas environments. In this paper, the experimental and computational aspects of TiO2 are reviewed, and the future research directions are described.

/pdf/tio2-gas-sensors-combining-experimental-and-dft-calculations-2n6rvvwt.pdf

Xiaoying Kang

Papers

Resistive-type VOCs and pollution gases sensor based on SnO2: A review

Semiconducting Polymer Nanoparticles with Surface‐Mimicking Protein Secondary Structure as Lysosome‐Targeting Chimaeras for Self‐Synergistic Cancer Immunotherapy

Progress in the preparation and application of CsPbX3 perovskites

Synthesis of MoS2-based nanostructures and their applications in rechargeable ion batteries, catalysts and gas sensors: a review

TiO2 Gas Sensors Combining Experimental and DFT Calculations: A Review