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High‐energy relatives of benzene have captured the imagination of chemists, especially those with cumulative double bonds which feature strained ring structure and lack any aromaticity stabilization. The integration of transition metals and Group 14 elements into six‐membered cycloallene rings has been achieved by a [5+1]‐cycloaddition of diethynylsilane or diethynylgermane with simple transition metal complexes. Experimental and computational studies demonstrate the stability of these unprecedent cycloallenes, i.e. metalla‐isosilabenzenes and metalla‐isogermabenzenes, may root in the decreasing strain on the cumulative double bonds. More details are discussed in the article by Zhang et al. on page 1121—1127.image

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Triphenylamine and its derivatives (TPAs) are promising for the photocatalytic oxidative coupling of thiols to disulfides, but suffer from the easy polymerization and difficult separation. In this paper, by immobilizing the TPAs into MOF with photoredox inert Sr nodes, the photo‐generated electrons were successfully controlled to transfer from the excited TPAs to O2, and finally realize the heterogeneous catalytic oxidation of thiols to disulfides. More details are discussed in the article by Zhang et al. on page 1093—1099.image

Direct Conjugation of Gallium(III)-Corroles to Short Interfering RNA (siRNA) Providing Real-Time siRNA Imaging and Gene Silencing.

Invited for this month's cover is the group of Jean-Paul Desaulniers at Ontario Tech University. The cover picture shows the successful conjugation of a GaIII-corrole to an siRNA to enable live cell imaging. Read the full text of the article at 10.1002/cplu.202400084.

Cover Picture: Modular Weaving DNAzyme in Skeleton of DNA Nanocages for Photoactivatable Catalytic Activity Regulation

Cover Picture: Modular Weaving DNAzyme in Skeleton of DNA Nanocages for Photoactivatable Catalytic Activity Regulation

Cover Picture: Modular Weaving DNAzyme in Skeleton of DNA Nanocages for Photoactivatable Catalytic Activity Regulation

Cover Picture: Modular Weaving DNAzyme in Skeleton of DNA Nanocages for Photoactivatable Catalytic Activity Regulation

Supramolecular Synthesis of Star Polymers.

Invited for this month's cover are the collaborating groups of Prof. Dr Takeharu Haino at Hiroshima University (Japan) and Dr Natsumi Nitta at the University of Chicago (USA). The cover picture shows cartoons of miktoarm A8Bn star and graft copolymers formed by molecular recognition of a self-assembled capsule possessing eight polymer chains and guest-terminated and guest-centered polymers. Read the full text of the review at 10.1002/cplu.20240014.

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The disulfide‐based poly(ether‐b‐amide) copolymer with polyamide hard segment and polyether soft segment is a new developed material that can be easily repaired under moderate conditions. The amorphous aggregated structure facilitates the diffusion of segments as well as the recombination of disulfide bonds and H‐bonds. Due to the excellent low‐temperature flexibility, rapid self‐healing capability and convenient recyclability, the material shows great potential application in the fields of low‐temperature packaging, sealing and solid propellants. More details are discussed in the article by Dong et al. on page 943—950. image

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Cover Picture and Issue Information

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Cover Picture: Arch Pharm (4/2024)

Cover Picture: Arch Pharm (4/2024)

Cover Picture: Materials and Corrosion. 4/2024

Cover Picture: Materials and Corrosion. 4/2024

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Cover Picture: Geomechanics and Tunnelling 2/2024

AbstractLining stress controllers (LSC) have been developed as special supporting measure for tunnelling in zones with stress‐induced failure involving large ground volumes and large deformations. The shotcrete lining is divided into several segments by longitudinal construction joints. The purpose of this segmentation is to absorb large deformations occurring during tunnel driving in weak ground. LSC elements are installed into these deformation joints. These elements have a defined workload during compression so the primary lining is not damaged (Source: DSI Underground).

Cover Picture and Issue Information

Cover Picture and Issue Information

Cover Picture: Metal‐Organic Frameworks as a Fluorescent Probe for Detection of Pathogenic Biomarkers in Human Urine (BKCS 4/2024) Seyeon Jeong, Hoi Ri Moon

The cover picture illustrates metal‐organic frameworks (MOFs) being used as fluorescent probes to detect biomarkers in human urine. MOF‐based fluorescent probes facilitate the diagnosis of diseases, including pheochromocytoma, toluene exposure, vitamin deficiencies, gout, hyperuricemia, cancers, various body disorders, and teratogenic effects, with low detection limits. Unlike conventional disease diagnosis methods such as biopsies or blood collection, detecting pathogenic biomarkers in human urine is non‐invasive and carries less risk. More details are available in the article by Seyeon Jeong and Hoi Ri Moon. image

Cover Picture: (Helv. Chim. Acta 4/2024)

Cover Picture: (Helv. Chim. Acta 4/2024)