Special Professor
Supervisor of Doctorate Candidates
Supervisor of Master's Candidates
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Impact Factor:16.383
DOI number:10.1021/jacs.1c08230
Journal:Journal of the American Chemical Society
Abstract:Sufficient experimental evidence has suggested that polycyclic aromatic hydrocarbons are the building blocks of carbonaceous nanostructures in combustion and circumstellar envelops of carbon-rich stars, but their fundamental formation mechanisms remain elusive. By exploring the reaction kinetics of phenylacetylene with 1-naphthyl/4-phenanthryl radicals, we provide compelling theoretical and experimental evidence for a novel and self-consistent hydrogen-abstraction phenylacetylene-addition (HAPaA) mechanism. HAPaA operates efficiently at both low and high temperatures, leading to the formation, expansion, and nucleation of peri-condensed aromatic hydrocarbons (PCAHs), which are otherwise difficult to synthesis via traditional hydrogen-abstraction acetylene/vinylacetylene-addition pathways. The HAPaA mechanism can be generalized to other α-alkynyl PCAHs and thus provides an alternative covalent bond bridge for PCAH combination via an acetylene linker. The proposed HAPaA mechanism may contribute toward a comprehensive understanding of soot formation, carbonaceous nanomaterials synthesis, and the origin and evolution of carbon in our galaxy.
Indexed by:Journal paper
Discipline:Engineering
Volume:143,
Page Number:20710-20716
Translation or Not:no
Date of Publication:2021-11-17
Included Journals:SCI
Links to published journals:https://doi.org/10.1021/jacs.1c08230
