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Intervalence Charge Transfer in an Osmium(IV) Tetra(ferrocenylaryl) Complex.
Inorg Chem
January 2025
Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States.
The functional properties of tetraaryl compounds, M(aryl) (M = transition metal or group 14 element), are dictated not only by their common tetrahedral geometry but also by their central atom. The identity of this atom may serve to modulate the reactivity, electrochemical, magnetic, and optical behavior of the molecular species, or of extended materials built from appropriate tetraaryl building blocks, but this has not yet been systematically evaluated. Toward this goal, here we probe the influence of Os(IV), C, and Si central atoms on the spectroelectrochemical properties of a series of redox-active tetra(ferrocenylaryl) complexes.
View Article and Find Full Text PDFSemiconducting Overoxidized Polypyrrole Nano-Particles for Photocatalytic Water Splitting.
Small
January 2025
UMR 8182, CNRS, Institut de Chimie Moléculaires et des Matériaux d'Orsay, Université Paris-Saclay, Orsay, 91405, France.
Capturing sunlight to fuel the water splitting reaction (WSR) into O and H is the leitmotif of the research around artificial photosynthesis. Organic semiconductors have now joined the quorum of materials currently dominated by inorganic oxides, where for both families of compounds the bandgaps and energies can be adjusted synthetically to perform the Water Splitting Reaction. However, elaborated and tedious synthetic pathways are necessary to optimize the photophysical properties of organic semiconductors.
View Article and Find Full Text PDFSelective Interface Engineering with Large π-Conjugated Molecules Enables Durable Zn Anodes.
Angew Chem Int Ed Engl
January 2025
USTC: University of Science and Technology of China, School of Chemistry and Materials Science, No.96, JinZhai Road, Baohe District, 230026, Hefei, CHINA.
Undesirable dendrite growth and side reactions at the electrical double layer (EDL) of Zn/electrolyte interface are critical challenges limiting the performance of aqueous zinc ion batteries. Through density functional theory calculations, we demonstrate that grafting large π-conjugated molecules (e.g.
View Article and Find Full Text PDFPreferential Binding of a Long-Arm Porphyrin Ligand to Higher Order G-Quadruplex under Crowding Conditions.
J Phys Chem B
January 2025
College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China.
Under conditions that are close to the real cellular environment, the human telomeric single-stranded overhang (∼200 nt) consisting of tens of TTAGGG repeats tends to form higher order structures of multiple G-quadruplex (G4) blocks. On account of the higher biological relevance of higher order G4 structures, ligand compounds binding to higher order G4 are significant for the drug design toward inhibiting telomerase activity. Here, we study the interaction between a cationic porphyrin derivative, 5,10,15,20-tetra{4-[2-(1-methyl-1-piperidinyl)propoxy]phenyl}porphyrin (T4), and a human telomeric G4-dimer (AG(TAG)) in the mimic intracellular molecularly crowded environment (PEG as a crowding agent) and K or Na solution (i.
View Article and Find Full Text PDFSynthesis and Self-Assembly of Monodisperse Graphene Nanoribbons: Access to Submicron Architectures with Long-Range Order and Uniform Orientation.
ACS Nano
January 2025
Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States.
Fabricating organic semiconducting materials into large-scale, well-organized architectures is critical for building high-performance molecular electronics. While graphene nanoribbons (GNRs) hold enormous promise for various device applications, their assembly into a well-structured monolayer or multilayer architecture poses a substantial challenge. Here, we report the preparation of length-defined monodisperse GNRs via the integrated iterative binomial synthesis (IIBS) strategy and their self-assembly into submicrometer architectures with long-range order, uniform orientation, as well as regular layers.
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