Experimental observation of molecular-weight growth by the reactions of -benzyne with benzyl radicals.

The chemistry of -benzyne (-CH) is of fundamental importance due to its role as an essential molecular building block in molecular-weight growth reactions. Here, we report on an experimental investigation of the reaction of -CH with benzyl (CH) radicals in a well-controlled flash pyrolysis experiment using a resistively heated SiC microtubular reactor at temperatures of 800-1600 K and pressures near 30  torr. To this end, the reactants -CH and CH were pyrolytically generated from 1,2-diiodobenzene and benzyl bromide, respectively.

Aboriginal Health Practitioners and fluoride varnish: self-determination driven regulation amendment for integrated oral health care for Aboriginal children.

Self-determination informed policies are key to improved outcomes for Aboriginal health. Aboriginal leadership must be reflected throughout any public health reform process that affects Aboriginal communities. This paper presents a body of oral health policy work, undertaken under Loddon Mallee Aboriginal Reference Group's (LMARG's) leadership, as an exemplar of a self-determination informed change, that led to an amendment of an Australian state (Victoria) regulation - The Drugs, Poisons and Controlled Substances Amendment (Registered Aboriginal and Torres Strait Islander Health Practitioners [AHPs]) Regulations 2022.

Gas-phase preparation of azulene (CH) and naphthalene (CH) the reaction of the resonantly stabilized fulvenallenyl and propargyl radicals.

Synthetic routes to the 10π Hückel aromatic azulene (CH) molecule, the simplest polycyclic aromatic hydrocarbon carrying an adjacent five- and seven-membered ring, have been of fundamental importance due to the role of azulene - a structural isomer of naphthalene - as an essential molecular building block of saddle-shaped carbonaceous nanostructures such as curved nanographenes and nanoribbons. Here, we report on the very first gas phase preparation of azulene by probing the gas-phase reaction between two resonantly stabilized radicals, fulvenallenyl and propargyl , in a molecular beam through isomer-resolved vacuum ultraviolet photoionization mass spectrometry. Augmented by electronic structure calculations, the novel Fulvenallenyl Addition Cyclization Aromatization (FACA) reaction mechanism affords a versatile concept for introducing the azulene moiety into polycyclic aromatic systems thus facilitating an understanding of barrierless molecular mass growth processes of saddle-shaped aromatics and eventually carbonaceous nanoparticles (soot, interstellar grains) in our universe.