2024-03-28T23:16:34Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/2190042020-09-04T11:55:42Zcom_10261_31com_10261_3com_10261_52707com_10261_5col_10261_284col_10261_52708
Liquid crystalline copper(i) complexes with bright room temperature phosphorescence
Giménez, Raquel
Crespo, Olga
Diosdado, Beatriz E.
Elduque, Anabel
Ministerio de Ciencia, Innovación y Universidades (España)
Ministerio de Economía y Competitividad (España)
Agencia Estatal de Investigación (España)
European Commission
Gobierno de Aragón
Consejo Superior de Investigaciones Científicas (España)
CSIC - Unidad de Recursos de Información Científica para la Investigación (URICI)
Phosphorescence in the liquid crystal state with one of the highest quantum yield values, 42%, at room temperature is reported. This property is achieved with cyclic trinuclear copper(I) complexes prepared using 3,5-dimethyl-4-(trialkoxyphenyl)pyrazolate ligands. The compounds show well-organized hexagonal columnar mesophases that are stable at room temperature or near room temperature with intracolumnar order at distances of 3.6 Å, red emission and lifetimes consistent with the excimeric metal-centered phosphorescence typical of copper trinuclear pyrazolato complexes. A non-mesogenic analogue shows similar properties, and the single crystal structure is formed by stacked molecules forming a supramolecular extended structure with two different intermolecular Cu⋯Cu contacts, 3.368 Å and 3.666 Å, which are in the range of previously reported weak cuprophilic interactions. The results demonstrate that metallomesogens with efficient room temperature phosphorescence can be obtained with metal complexes other than the widely explored and precious metal-based iridium or platinum complexes.
This work was financially supported by the FEDER/MICIU-AEI/projects PGC2018-093761-B-C31 and CTQ2017-83421-P, FEDER/MINECO/project CTQ2016-75816-C2-1-P, and the Gobierno de Aragón/FEDER (research groups E47_17R, E07_17R and E08_17R). The authors acknowledge the use of Servicios Científico-Técnicos of CEQMA (UZ-CSIC).
We acknowledge support of the publication fee by the CSIC Open Access Publication Support Initiative through its Unit of Information Resources for Research (URICI).
Peer reviewed
2020-09-02T10:40:17Z
2020-09-02T10:40:17Z
2020
artículo
http://purl.org/coar/resource_type/c_6501
Journal of Materials Chemistry C 8(19): 6552-6557 (2020)
2050-7526
http://hdl.handle.net/10261/219004
10.1039/D0TC00642D
http://dx.doi.org/10.13039/501100003329
http://dx.doi.org/10.13039/501100010067
http://dx.doi.org/10.13039/501100000780
http://dx.doi.org/10.13039/501100003339
http://dx.doi.org/10.13039/501100011033
en
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-093761-B-C31
PGC2018-093761-B-C31/AEI/10.13039/501100011033
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/CTQ2017-83421-P
CTQ2017-83421-P/AEI/10.13039/501100011033
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTQ2016-75816-C2-1-P
Publisher's version
https://doi.org/10.1039/D0TC00642D
Sí
open
Royal Society of Chemistry (UK)