“…The experiments were conducted at the X04DB beamline of the Swiss Light Source at the Paul Scherrer Institute utilizing a resistively heated silicon–carbide (SiC) chemical microreactor coupled to a molecular beam apparatus operated with a double velocity map imaging (VMI) photoelectron photoion coincidence spectrometer. − Four reaction systems were studied: acetylene (C 2 H 2 ) with 1-bromotriphenylene (C 18 H 11 Br), vinylacetylene (C 4 H 4 ) with 4-bromopyrene (C 16 H 9 Br), nitrosobenzene (C 6 H 5 NO) with phenanthrene (C 14 H 10 ), and acetylene (C 2 H 2 ) with 7-bromobenzo[ ghi ]perylene (C 22 H 11 Br). Briefly, 1-bromotriphenylene (C 18 H 11 Br), 4-bromopyrene (C 16 H 9 Br), phenanthrene (C 14 H 10 ; 98%; Sigma-Aldrich), and 7-bromobenzo[ ghi ]perylene (C 22 H 11 Br) were heated at 423 ± 1, 403 ± 1, 358 ± 1, and 513 ± 1 K in a high-vacuum oven located in the source chamber and were seeded in acetylene (C 2 H 2 ; ≥99.5%; PANGAS; acetone traces removed via ethanol/dry ice bath), vinylacetylene (C 4 H 4 ; 5% in helium, Applied Gas Inc.), nitrosobenzene (C 6 H 5 NO; 97%, Sigma-Aldrich; seeded at <1% in helium), and acetylene at backing pressures of 100, 100, 125, and 220 mbar, respectively.…”