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Optical transition between singlet and triplet is observed in phosphorescent platinum octaethylporphyrin (PtOEP), on a graphene substrate. PtOEP on single layer of graphene not only modulates the dominant emission wavelength but also enhances the emission intensity. This result addresses new light-matter interactions of the hybrid structure of graphene and a single molecule.
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http://dx.doi.org/10.1002/adma.201504516 | DOI Listing |
Nano Lett
September 2025
Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, and School of Materials Science and Engineering, Jilin University, Changchun 130022, China.
Developing highly active and stable nonprecious electrocatalysts toward sluggish alkaline oxygen evolution reaction (OER) is essential for large-scale green hydrogen production via electrochemical water splitting. Here we report phase and surface co-reconstruction of S-doped (NiCo)WC nanoparticles into (NiCo)C with amorphous electroactive NiCoOOH layer for highly efficient alkaline OER by W dissolution and NiCo surface oxidation. The W dissolution results in the formation of Brønsted base WO ions, which electrostatically accumulate around electrode to promote water dissociation into abundant OH* intermediates, in situ constructing a locally strong alkaline microenvironment to facilitate OH* adsorption on NiCoOOH sites and trigger lattice-oxygen oxidation path.
View Article and Find Full Text PDFSmall
September 2025
Zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences (CAS) Ningbo, Zhejiang, 315201, P. R. China.
Achieving high open-circuit voltage (V) continues to pose a significant challenge for kesterite CuZnSn(S,Se) (CZTSSe) solar cells, predominantly due to the pronounced charge carrier recombination occurring at heterointerface (HEI). To address this issue, an innovative non-metallic boron (B)-modification strategy is developed to optimize the HEI. The key advantages of this strategy are as follows: (i) Leveraging the strong bonding characteristic of B with three valence electrons, the dangling bonds on the absorber surface can be fully saturated, effectively passivating surface states without introducing new defects; (ii) Moreover, diffusion of B into the near-surface region of HEI during selenization process can create weak n-type B donor defects, which lowers the valence band maximum (VBM) of the absorber and mitigates Fermi level pinning.
View Article and Find Full Text PDFJ Mater Chem B
September 2025
Department of Chemistry & Biochemistry, Texas Tech University, Lubbock, Texas 79409, USA.
Near-infrared (NIR) emitting materials underpin emerging medical diagnostics and therapeutic bionanotechnologies. Conjugated polymer nanoparticles offer unique advantages due to their remarkable absorption cross-sections, photostability, synthetic tunability, and biocompatibility. Despite the vast library of NIR-absorbing conjugated polymers, relatively few narrow bandgap structures have been explored for NIR imaging.
View Article and Find Full Text PDFNat Commun
August 2025
Department of Mechanical Engineering, The University of Hong Kong, Hong Kong SAR, China.
Crystalline solids with extreme insulation often exhibit a plateau or even an upward-sloping tail in thermal conductivity above room temperature. Herein, we synthesize a crystalline material AgTlI with an exceptionally low thermal conductivity of 0.21 WmK at 300 K, which continues to decrease to 0.
View Article and Find Full Text PDFUltrason Sonochem
August 2025
MOE Key Laboratory of Materials Physics and Chemistry under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, PR China; Key Laboratory of Condensed Matter Structure and Properties in Shaanxi Province, Xi'an 710129, PR China. Ele
Electrodeposition is a key technique for fabricating ultra-thin copper foils, where grain refinement plays a critical role in determining their mechanical performance. In recent years, the unique cavitation effects associated with ultrasonic fields have demonstrated significant potential in modulating metal deposition. This study quantitatively investigates the influence of ultrasonic amplitude on the nucleation behavior of copper electrodeposited on a Co-Ni alloy substrate.
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