Metal halide perovskite has become a promising semiconductor material due to its diverse chemical structure and excellent optoelectronic properties. After introducing organic chiral molecule into the perovskite framework, chiral perovskite nanomaterials can be obtained, which has greatly promoted the rapid development of smart optoelectronic materials and spin electronic devices. This paper reviews the latest research progress in the construction of chiral perovskite nanomaterials, including one-dimensional chiral perovskite nanowires, two-dimensional and quasi-two-dimensional chiral organic-inorganic hybrid perovskite nanosheets, three-dimensional chiral perovskite nanocrystals, chiral perovskite nanocrystals induced in supramolecular assembly system and the mechanism for the formation of chirality. It is worth noting that different types of chiral perovskite nanomaterials show excellent optoelectronic properties and huge application prospects in terms of circular dichroism, circularly polarized luminescence, ferroelectricity and spintronics. However, the research on chiral perovskite nanomaterials is still in its infancy, and many of its mechanisms are still controversial, and many basic and applied work needs to be carried out.

Photothermal therapy is a new emerging treatment method in recent years, which has the characteristics of strong targeting and wide adaptability. In photothermal therapy, light energy is converted into heat energy through the absorption of light by photothermal agents, thus realizing the therapeutic effect. Therefore, the photothermal conversion performance of photothermal agents directly determines the effect of photothermal therapy. There are many kinds of photothermal agents, which cover a variety of materials with different compositions and properties from inorganic to organic. Among them, polypyrrole has good biocompatibility, excellent photostability and photothermal conversion performance, which is a photothermal agent with great application potential and has attracted wide attention in the field of photothermal therapy. However, its development trend and prospects in the field of photothermal therapy are rarely reported. In this paper, the preparation methods of polypyrrole and its nanocomposites are reviewed, and the applications of polypyrrole and its nanocomposites in the field of photothermal therapy are described in detail, including the properties of polypyrrole-based nanomaterials and the effect of photothermal treatment. It is pointed out that polypyrrole matrix composites with CT, magnetic resonance imaging, photoacoustic imaging and photothermal properties have become the corresponding development trend. On this basis, the problems in the preparation and application of polypyrrole-based nanocomposites are revealed, then the challenges encountered in the development process and the prospects for biomedical applications are analyzed.

Chiral carbon quantum dots(CQDs) have wide application potential in catalysis, detection and biomedicine owing to their excellent fluorescence properties, good biocompatibility, low toxicity, easy functionalization and chiral characteristics. At present, chiral CQDs are synthesized by one-step or two-step methods, and applied to chiral catalysis, chiral detection, Golgi apparatus targeted imaging, selective tuning of enzyme and protein activity, selective regulation of cellular energy metabolism, promotion of plant growth, etc. However, the development of chiral CQDs is just beginning. It is necessary to further improve the controllable synthesis process and prepare long wavelength chiral CQDs with high fluorescence quantum yield, so as to make them shine brilliantly in biomedical and other fields.

Both physiological behaviors and pathological processes of living organisms are related to the synergistic co-action of various enzymes. Inspired by this, a new bionic catalytic technology, immobilized multi-enzyme cascade reactor has been proposed for accelerating the bio-reactions including synthesis, substrate degradation, transformation and recombination. By taking advantages of the good stability, reusability and remarkable high efficiency, the immobilized multi-enzyme cascade reactor has attracted more and more attention in many fields including biological sensing, simulation biology and biological transformation and so on. This review focuses on the art-of-state and progress of immobilized multi-enzyme cascade reactor in recent years. The fundamentals, preparation approaches, advantages, factors affecting the efficiency, and applications of the technology are involved. Its trends in future study are also prospected.

Titanium (Ti) and Ti alloys have been the main clinical application materials for bone and dental implants due to their excellent mechanical properties and good biocompatibility. However, it is not easy to achieve rapid osseointegration with surrounding bone tissues because of the biological inertia of titanium materials. Therefore, the biological activity of implant surface is further required. Hydroxyapatite (HA) is the main inorganic component of human bones and teeth, which has good bioactivity and biocompatibility. But restricted by its own brittleness, HA is often used as a coating material to cover the surface of Ti substrates to improve the biological activity of implants. However, the problems of weak bonding strength between coating and substrate and poor mechanical stability of coating have been the main factors limiting the wide clinical applications of HA coated titanium implants. From the aspects of coating structure, composition and preparation method, the research status and development trend of improving the interface bonding strength between Ti substrate and HA coating at home and abroad are summarized, which could provide a reference for the preparation and application of high-performance titanium implants.

It is a main strategy that carbon dioxide (CO₂) in the atmosphere is effective utilized, and its concentration is balanced by capture and conversion of CO₂. Generally, CO₂ responsive polymers are prepared by alkene monomers containing amine groups. Their response and capture properties for CO₂ are improved by grafting polymerization or combining with other functional molecules. Natural polymers including polysaccharide and protein are considered as excellent candidates to prepare environmentally friendly polymers because of their rich resources, non-toxicity, biodegradability and good biocompatibility. Additional, chitosan contains a large number of amino groups, so it is employed to prepare CO₂ smart materials and exhibits specific advantages. In the current paper, firstly, CO₂ responsive polymer and chitosan(CS) are introduced. Secondly, advance in CO₂ responsive polymers and capture materials based on chitosan is reviewed. Finally, a prospect for smart materials based on chitosan in the future is provided.

SSZ-13 zeolite has CHA topology and elliptical cages of large pore volume derived from its low framework density and 3-dimensional eight-membered ring windows (0.38 nm×0.38 nm). In contrast to CH₄ and N₂, SSZ-13 zeolite preferentially adsorbs CO₂, and thus is suitable for CO₂/CH₄ or CO₂/N₂ gas separation. SSZ-13 membrane can be prepared by in situ crystallization, secondary growth method, microwave synthesis, and interzeolite conversion synthesis. The hydrophobicity increases as the rise of Si/Al ratio, and the membrane layer becomes more uniform, with less defects, and much more selectivity, which is beneficial for natural gas purification and fuel gas separation. The main processes of preparation of SSZ-13 membranes are reviewed. The mechanism of gas separation of SSZ-13 membrane is summarized. The effects of supports, the composing conditions, Si/Al ratios, test conditions, and the gas mixtures on gas separation performance of SSZ-13 membranes are evaluated in this paper. The further development of high-silica SSZ-13 membrane is forecasted.

Pickering emulsion uses solid particles of colloidal size instead of traditional surfactants as stabilizer, which has the advantages like ultra-stability, biocompatibility, environmental friendliness and so on. Switchable Pickering emulsion is able to change the surface wettability of the solid emulsifier with changes of pH, CO₂/N₂ concentration, magnetic field, temperature or light intensity. The characteristics of fast conversion between “emulsification” and “demulsification” can meet the demand for transient stability of emulsion in heterogeneous catalysis, emulsion polymerization and so on, so it has a wide application prospect. This paper comprehensively summarizes the research and development of switchable Pickering emulsion in recent years and its application in interface catalytic system, treatment of organic wastewater by liquid membrane, encapsulation and release of drugs, etc.

With the commercial application of low specific capacity silicon-carbon composites(<500 mAh/g) in lithium-ion batteries, silicon-based anode materials have also evolved from laboratory research to industrialization. In recent years, various investigations have been proposed to solve the problems caused by the volume change (>300%) of silicon during lithiation/delithiation. From the perspective of material structural design, the research focus has gradually shifted from the initial silicon nano-structuration and elaboration of silicon-based composite materials to the structural design of the silicon-carbon composite secondary particles and the surface coating design. In terms of application performance research, in addition to specific capacity and cycle performance of materials reported in the early literature, the specific surface area, tap density, initial and cyclic coulombic efficiency and other parameters of materials which are more in line with the practical application requirements of the batteries have been widely studied, thus greatly promoting the commercial application process of the silicon-based anode materials. In this review, the development of the composition and structural design of silicon-carbon composites in recent years are presented and summarized. The structural characteristics and electrochemical properties of silicon-carbon composites synthesized by graphite, soft carbon, hard carbon, carbon fiber and graphene as carbon sources are further proposed and compared. Moreover, the effects of carbon in the structure and properties of silicon-carbon composites are briefly summarized. Finally, the selection of carbon material and structural design in the preparation of silicon-carbon composites are discussed and prospected.

The development of electrolyte with high-safety and high-voltage is of significant importance for high performance lithium-ion batteries. Recently, organosilicon electrolytes with unique physicochemical properties have become one of the choices. In this review, the advances of organosilicon compounds both as electrolyte solvents and additives are reviewed from the viewpoint of molecular engineering. The design and performance of organosilicon compounds with carbonate group, carbamate group, nitrile group, ionic liquids group and fluoro substitute as high-voltage and high-safety solvent are described in detail. The versatile organosilicon compounds evaluated as high voltage additive, high safety additive, high/low temperature additive, suppression self discharge additive and acid/water scavenger additive are introduced based on their functional group and reaction mechanism. Research trend and prospects of organosilicon electrolyte are presented finally.

With the rapid development of energy storage power supply, electronic products and electric vehicles, the development of high energy density lithium ion battery has become one of the key research directions. At present, more widely used liquid lithium ion battery, due to the organic liquid electrolyte leakage, combustion, explosion, short circuit and other problems, poses a very big potential safety hazard. Therefore, there is an urgent need to develop lithium ion batteries with higher energy density and better safety. Compared with the existing organic liquid electrolyte, the all-solid-state polymer electrolyte (ASPE) have the advantages of higher theoretical specific capacity, stronger structural design, easier large-scale production and manufacture, and better system safety performance, which is a kind of electrolyte with wide application prospects. ASPE has played a leading role in lithium ion batteries, and researchers have done a lot of research work. This paper combines the latest scientific research progress of typical ASPE (polyether, polyester, polyurethane, polysiloxane) and the work of our group, and reviews the development of these solid polymers to develop high-performance lithium batteries. The preparation of solid electrolyte, new lithium battery, interface regulation, preparation process and other aspects have been expounded, and its future research is prospected.

Bioactive peptides play an important role in physiological processes. Accurate analysis of bioactive peptides will help to further develop their efficacy. Due to the bioactive peptides often coexisting with high concentrations of proteins, it is still quite difficult to analyze peptides in complex biological systems. These coexisted proteins may severely reduce the separation efficiency of chromatographic column for bioactive peptides and inhibit the peak signal of the peptide in the mass spectrum. In view of this, metal-organic frameworks are introduced to perform enrichment analysis of active peptides. Metal-organic frameworks(MOFs) is a type of framework self-assembled by coordination bonds between metal ions or metal clusters and organic ligands to form organic-inorganic hybrid materials with porous structure. Due to their adjustable frame structure, high porosity, good chemical stability, reproducibility, and simple synthesis process, they are widely used in active peptides enrichment, gas adsorption and separation, the areas of sensors, drug delivery and catalytic reactions. In this paper, the research progress of MOF materials as active peptide enrichment materials such as phosphopeptides, glycopeptides and endogenous peptides in recent years is reviewed, and the shortcomings and outlook of MOFs materials in this area are pointed out.