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Designing dynamic assemblies in living cells is crucial for creating organelle‐like structures, yet precisely controlling their morphological transitions in response to specific signals is a significant challenge. In this study, a DNA framework is combined with hybridization chain reaction (HCR) to achieve specific assembly of hyperbranched aggregates in cancer cells. HCR, distinguished for its signal amplification and linear extension capabilities, enables the morphological transition of precursors to be specifically triggered by trace amounts of endogenous microRNA‐21 (miR‐21). The spatial constraints of the framework and the diversity of hairpin orientations significantly accelerate the assembly kinetics of hyperbranched networks, and the resulting micrometer‐scale aggregates possess enhanced intracellular retention capabilities. Introducing Ce6 molecules as a proof of concept, the regulatory function of aggregates can be activated under light irradiation and remains effective over a long period. The probe we constructed  demonstrates good stability and biocompatibility, offers easy functionalization, and works inside cells long‐term, making it an ideal candidate material for the construction of organelle‐like structures. [ABSTRACT FROM AUTHOR]

The present status and development of ECH production are summarized, the advantages and disadvantages of different process routes are analyzed, the catalyst system and production process of ECH production by glycerol method and direct epoxidation of chloropropene are mainly introduced. Due to the effective utilization of biomass resources and simple production process. Glycerol process is a mature production process after propylene high-temperature chlorination process; as a green synthesis process of ECH, the direct epoxidation of chloropropene should focus on the design of low-cost catalysts and the integration of processes to reduce consumption. [ABSTRACT FROM AUTHOR]

Construction of white‐light emitters is of great importance in practical applications but is challenging for metal nanoclusters. Herein, arginine (Arg)‐mediated copper nanoclusters (Cu NCs) assemblies with white‐light emission (WLE) are reported for the first time. The multidentate ligand, Arg, not only effectively tailors the high stability and locally‐excited emission (LES) of aqueous phase Cu NCs, but also bridges 1‐naphthalenol methylcarbamate (NMC) to generate a blue emitter via through‐space interactions (TSIs), resulting in a stable mixed light. Density functional theory calculation and mass spectrum further confirm that Arg can allow for the formation of strong hydrogen‐bonds with the ligand 2,4‐diaminotoluene of Cu NCs, and formation of TSIs‐based complexes with NMC. More importantly, pure white‐light emission (WLE) with Commission Internationale de L'Eclairagecoordination (0.30, 0.31) is observed by regulating the ratio between Arg and the interfacial ligand of NMC. The findings not only provide a new perspective for the construction of WLE emitters via interface modification chemistry but also open a window to gain insight into the mechanism of interface engineering. [ABSTRACT FROM AUTHOR]

Unrestrained use of sodium dodecyl sulfate (SDS) and sodium lauryl sulfonate (SLS) in industry, agriculture and household are causing its subsequent accumulation in waterways, which can cause the adverse effect on various living organisms, especially aquatic organisms. Therefore, an efficient and rapid technique to detect SDS and SLS in the environment is urgently demanded. Herein, a novel far-ultraviolet emission carbon nanoparticles (FCNPs, quantum yield of ∼15.47%) with positive charges was synthesized by one-pot simple hydrothermal route using 5-hydroxytryptamine as the precursor, and applied to the detection of SDS and SLS. When the exposure to SDS and SLS, the FCNPs displayed anionic detergent-sensitive fluorescent quenching. The mechanism was proved to be that enrichment-positive charge of –NH 3 + groups can strongly combine with negatively charged SDS/SLS molecules through electrostatic adsorption, resulting in luminescent quenching of FCNPs via photoinduced-electron transfer mechanism. By using this sensing platform, there are two good linear relationships between the quenching degree of the FCNPs and the concentrations of SDS and SLS in the range of 5.0 nM–50 μM and 2.5 nM to 50 μM with almost the same LOD of ∼2.5 nM, respectively. Moreover, this sensing platform has been successfully applied to detect the SDS and SLS in real domestic wastewater samples. Therefore, the electropositive luminescent FCNPs might possess enormously potential utilization in the detection of anionic detergent for environmental protection. • A novel electropositive probe of FCNPs was successfully prepared using simple hydrothermal method. • The prepared FCNPs have been successfully used as environmental probe to detect anionic detergents of SDS and SLS. • Quenching mechanism between FCNPs and anionic detergents were photoinduced-electron transfer mechanism. • The FCNPs-based sensor has been successfully used for the analysis of SDS/SLS in real domestic wastewater samples. [ABSTRACT FROM AUTHOR]