2026-06-01T22:58:41Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/328532026-02-03T11:35:31Zcom_10630_2254col_10630_37953

Aggregation of one-dimensional wires: The case of long oligoynes Gordillo Gámez, Fernando Gao, Yueze Aragó, Juan Ortí, Enrique Aranda, Daniel Kertesz, Miklos Tykwinski, Rik R. Casado, Juan Química física Química - Notación Moléculas We show an unexpected aggregation phenomenon of a long oligoyne (Py[16]) with 16 contiguous triple bonds and endcapped with bulky 3,5-bi(3,5-bis-tert-butylphenyl)pyridine groups. Aggregation of 1D π-conjugated oligoyne chains is rare given the minimal π–π intermolecular interactions as well as its flexibility that works against self-assembly. In dilute solutions, the reversible aggregation of Py[16] initiates at low temperature in the range of 140–180 K, and is not observed for shorter oligoynes in this series. Cryogenic UV/Vis electronic absorption spectra and vibrational Raman spectra with different laser wavelength lines tuning from in-resonance to off-resonance conditions have been used to extract the vibrational features characterizing the monomer and aggregate species. Theoretical calculations complement the spectroscopic findings. 2024-09-23T10:18:03Z 2024-09-23T10:18:03Z 2024 journal article F. Gordillo-Gámez, Y. Gao, J. Aragó, E. Ortí, D. Aranda, M. Kertesz, R. R. Tykwinski, J. Casado, Angew. Chem. Int. Ed. 2024, 63, e202404014. https://doi.org/10.1002/anie.202404014 https://hdl.handle.net/10630/32853 10.1002/anie.202404014 eng http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional Wiley