An anthropocene-framed transdisciplinary dialog at the chemistry-energy nexus.

At the energy-chemistry nexus, key molecules include carbon dioxide (CO), hydrogen (H), methane (CH), and ammonia (NH). The position of these four molecules and that of the more general family of synthetic macromolecular polymer blends (found in plastics) were cross-analyzed with the planetary boundary framework, and as part of five scientific policy roadmaps for the energy transition. According to the scenarios considered, the use of some of these molecular substances will be drastically modified in the coming years.

Correction: An exchange coupled - linked vanadyl porphyrin dimer for quantum information processing.

[This corrects the article DOI: 10.1039/D2SC04969D.].

An exchange coupled - linked vanadyl porphyrin dimer for quantum information processing.

We report here the synthesis of a new - (-) singly linked vanadyl-porphyrin dimer that crystallizes in two different pseudo-polymorphs. The single crystal continuous-wave electron paramagnetic resonance investigation evidences a small but crucial isotropic exchange interaction, , between the two tilted, and thus distinguishable, spin centers of the order of 10 cm. The experimental and DFT studies evidence a correlation between values and porphyrin plane tilting angle and distortion.

Sustainable production of curable maltodextrin-based electrospun microfibers.

Maltodextrins are inexpensive, water-soluble starch hydrolysis products composed of high molecular weight polysaccharide molecules. This feature allows their water solutions to be processed by electrospinning to produce bio-based microfibrous mats. Also, the presence of hydroxyl functions along the maltodextrin's backbone enables cross-linking reactions to be performed, necessary to overcome the intrinsic solubility of the starting material, by exploiting suitable functional molecules.

One-step sustainable synthesis of cationic high-swelling polymers obtained from starch-derived maltodextrins.

The good water solubility displayed by most starch-derived maltodextrins has limited their use when specific mechanical properties are required, particularly when working in aqueous media. As a result, numerous attempts to cross-link such polysaccharides to obtain cross-linked polymers have been reported; in this context, non-toxic and biocompatible water-soluble diglycidyl ethers have performed well. Besides, amines are commonly used as curing agents in combination with diglycidyl ethers for the production of epoxy resins.

Probing the surfaces of heterogeneous catalysts by in situ IR spectroscopy.

This critical review describes the reactivity of heterogeneous catalysts from the point of view of four simple, but essential for Chemistry, molecules (namely dihydrogen, carbon monoxide, nitrogen monoxide and ethylene) that are considered as probes or as reactants in combination with "in situ" controlled temperature and pressure Infrared spectroscopy. The fundamental properties of H(2), CO, NO and C(2)H(4) are shortly described in order to justify their different behaviour in respect of isolated sites in different environments, extended surfaces, clusters, crystalline or amorphous materials. The description is given by considering some "key studies" and trying to evidence similarities and differences among surfaces and probes (572 references).

Cationic heteroleptic cyclometalated iridium complexes with 1-pyridylimidazo[1,5-alpha]pyridine ligands: exploitation of an efficient intersystem crossing.

Luminescent ligands in Ir(III) cyclometalated complexes. The photophysical and photochemical properties of Ir-cyclometalated complexes containing luminescent ligands are evaluated (see figure). Significant admixture between Ir and ligand orbitals induces an efficient intersystem crossing.