Stable 2D anti-ferromagnetically coupled fluorenyl radical dendrons

Jian Wang, Gakhyun Kim, María Eugenia Sandoval-Salinas, Hoa Phan, Tullimilli Y. Gopalakrishna, Xuefeng Lu, David Casanova, Dongho Kim, Jishan Wu

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We report the first class of stable, two-dimensional (2D) anti-ferromagnetically coupled dendritic polyradicaloids. A kinetically blocked fluorenyl radical was used to build up the first and second generation dendrons FR-G1 and FR-G2 containing three and seven fluorenyl units, respectively. The neighboring fluorenyl radicals in FR-G1 and FR-G2 show moderate anti-ferromagnetic exchange interaction, resulting in a doublet and quartet ground state, respectively, with a small doublet-quartet energy gap. From FR-G1 to FR-G2, the energy gap decreased and the two-photon absorption was enhanced owing to more extended 2D π-conjugation. Both compounds showed multiple redox waves due to their polyradical character.

Original languageEnglish
Pages (from-to)3395-3400
Number of pages6
JournalChemical Science
Volume9
Issue number13
DOIs
Publication statusPublished - 2018

Bibliographical note

Funding Information:
J. W. acknowledges financial support from MOE Tier 3 programme (MOE2014-T3-1-004). The work at Yonsei University was supported by Global Research Laboratory (2013K1A1A2A02050183) through the National Research Foundation of Korea. D. C. is thankful to Eusko Jaurlaritza and the Spanish Government MINECO/FEDER (projects IT588-13 and CTQ2016-80955).

Funding Information:
J. W. acknowledges nancial support from MOE Tier 3 programme (MOE2014-T3-1-004). The work at Yonsei University was supported by Global Research Laboratory (2013K1A1A2A02050183) through the National Research Foundation of Korea. D. C. is thankful to Eusko Jaurlaritza and the Spanish Government MINECO/FEDER (projects IT588-13 and CTQ2016-80955).

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Fingerprint Dive into the research topics of 'Stable 2D anti-ferromagnetically coupled fluorenyl radical dendrons'. Together they form a unique fingerprint.

Cite this