Modular supramolecular dimerization of optically tunable extended aryl viologens.

Cucurbit[8]uril (CB[8]) mediated assembly of extended aryl viologens (EVs) into optically tunable dimers is reported for the first time. We show that the modular design and synthesis of a new class of π-conjugated viologen derivatives with rigid aromatic or heteroaromatic bridging units as well as electron donating molecular recognition motifs enable their self-assembly into 2 : 2 complexes with CB[8]. The quantitative dimerization process involving these two molecular components in an aqueous solution enables excimer-like interactions between closely packed charged guests giving rise to distinct spectroscopic behavior. The nature of these dimers (CB[8]2·(EV[X]R)2) in the ground and excited states was characterized by NMR, isothermal titration calorimetry, and steady-state spectroscopic measurements

Acetonitrile-assisted exfoliation of layered grey and black arsenic: contrasting properties

We report herein the successful exfoliation of grey and black arsenic through shear force in acetonitrile. Both exfoliated materials displayed great photothermic effect while black arsenic was shown to be a better candidate for impedimetric volatile organic compounds sensor.</p

Germanane synthesis with simultaneous covalent functionalization: towards highly functionalized fluorescent germananes

We describe exfoliation and subsequent modification of calcium germanide, which yields layered germanium materials with alkyl or aryl groups. Different organic functional group covalently derivatized layered germananes exhibit very intense fluorescence.</p

Dataset for publication "Decoding Niobium Carbide MXene Dual Functional Photoactive Cathode in Photoenhanced Hybrid Zinc-Ion Capacitor"

&lt;p&gt;This is a dataset for publication "Decoding Niobium Carbide MXene Dual-Functional Photoactive Cathode in Photoenhanced Hybrid Zinc-Ion Capacitor". It contains all relevant data from the aforementioned publication. The details about how to read these data is contained within the readme file.&lt;/p&gt

Thiographene synthesized from fluorographene <i>via</i> xanthogenate with immobilized enzymes for environmental remediation

Thiographene with a high content of thiol groups and it was used as a platform for anchoring both hydrolytic and oxidoreductase-based enzymes to produce efficient biocatalytic systems with no leaking of immobilized enzymatic molecules during storage.</p

Platinum(II) Complexes of Tridentate ‐Coordinating Ligands Based on Imides, Amides, and Hydrazides: Synthesis and Luminescence Properties

Five Pt(II) complexes are described in which the metal ion is bound to anionic urn:x-wiley:14341948:media:ejic202000879:ejic202000879-math-0003 ‐coordinating ligands. The central, deprotonated N atom is derived from an imide Ar−C(=O)−NH−C(=O)−Ar {PtL1–2Cl; Ar=pyridine or pyrimidine}, an amide py−C(=O)−NH−CH2−py {PtL3Cl}, or a hydrazide py−C(=O)−NH−N=CH−py {PtL4Cl}. The imide complexes PtL1–2Cl show no significant emission in solution but are modestly bright green/yellow phosphors in the solid state. PtL3Cl is weakly phosphorescent. PtL4Cl is formed as a mixture of isomers, bound through either the amido or imino nitrogen, the latter converting to the former upon absorption of light. Remarkably, the imino form displays fluorescence in solution, λ0,0=535 nm, whereas the amido shows phosphorescence, λ0,0=624 nm, τ=440 ns. It is highly unusual for two isomeric compounds to display emission from states of different spin multiplicity. The amido‐bound PtL4Cl can act as a bidentate urn:x-wiley:14341948:media:ejic202000879:ejic202000879-math-0004 ‐coordinating ligand, demonstrated by the formation of bimetallic complexes with iridium(III) or ruthenium(II)

Decoding Niobium Carbide MXene Dual-Functional Photoactive Cathode in Photoenhanced Hybrid Zinc-Ion Capacitor

The coupling of energy harvesting and energy storage discrete modules in a single architecture as a “two-in-one” concept is significant in off-grid energy storage devices. This approach can decrease the device size and the loss of energy transmission in common integrated energy harvesting and storage systems. This work systematically investigates the photoactive characteristics of niobium carbide MXene, Nb2CTx, in a photoenhanced hybrid zinc-ion capacitor (P-ZIC). The unique configuration of the Nb2CTx photoactive cathode absorbs light to charge the capacitor and enables it to operate continuously in the light-powered mode. The Nb2CTx-based P-ZIC shows a photodriven capacitance enhancement of over 60% at the scan rate of 10 mV s–1 under 50 mW cm–2 illumination with 435 nm wavelength. Furthermore, a photoenhanced specific capacitance of ∼27 F g–1, an impressive photocharging voltage response of 1.0 V, and capacitance retention of ∼85% (over 3000 cycles) are obtained