Probing Colossal Carbon Rings

SJP Marlton; JT Buntine; P Watkins; C Liu; U Jacovella; E Carrascosa; JN Bull; EJ Bieske

Journal article

Probing Colossal Carbon Rings

SJP Marlton, JT Buntine, P Watkins, C Liu, U Jacovella, E Carrascosa, JN Bull, EJ Bieske

Journal of Physical Chemistry A | AMER CHEMICAL SOC | Published : 2023

DOI: 10.1021/acs.jpca.2c07068

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Abstract

Carbon aggregates containing between 10 and 30 atoms preferentially arrange themselves as planar rings. To learn more about this exotic allotrope of carbon, electronic spectra are measured for even cyclo[n]carbon radical cations (Formula Presented-Formula Presented) using two-color photodissociation action spectroscopy. To eliminate spectral contributions from other isomers, the target cyclo[n]carbon radical cations are isomer-selected using a drift tube ion mobility spectrometer prior to spectroscopic interrogation. The electronic spectra exhibit sharp transitions spanning the visible and near-infrared spectral regions with the main absorption band shifting progressively to longer wavelengt..

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University of Melbourne Researchers

Evan Bieske Author

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Awarded by Australian Research Council

Funding Acknowledgements

This research was supported under the Australian Research Council?s Discovery Project funding scheme (Project Numbers DP150101427 and DP160100474) . U.J. acknowledges support from the Swiss National Science Foundation (P2EZP2_178429) . We thank Richard Mathys of the Science Faculty Workshop and Luke Weston for indispensable contributions to the design and construction of the apparatus. We thank Dr. Ewen Campbell for helpful discussions.