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 journalArticle

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 Jan 1

Fingerprint

Dendrimers
Energy gap
Exchange interactions
Ground state
Photons
Oxidation-Reduction

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Cite this

Wang, J., Kim, G., Sandoval-Salinas, M. E., Phan, H., Gopalakrishna, T. Y., Lu, X., ... Wu, J. (2018). Stable 2D anti-ferromagnetically coupled fluorenyl radical dendrons. Chemical Science, 9(13), 3395-3400. https://doi.org/10.1039/c7sc05493a
Wang, Jian ; Kim, Gakhyun ; Sandoval-Salinas, María Eugenia ; Phan, Hoa ; Gopalakrishna, Tullimilli Y. ; Lu, Xuefeng ; Casanova, David ; Kim, Dongho ; Wu, Jishan. / Stable 2D anti-ferromagnetically coupled fluorenyl radical dendrons. In: Chemical Science. 2018 ; Vol. 9, No. 13. pp. 3395-3400.
@article{8aacd9a533c64fda89d9540ac0a7fd4d,
title = "Stable 2D anti-ferromagnetically coupled fluorenyl radical dendrons",
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.",
author = "Jian Wang and Gakhyun Kim and Sandoval-Salinas, {Mar{\'i}a Eugenia} and Hoa Phan and Gopalakrishna, {Tullimilli Y.} and Xuefeng Lu and David Casanova and Dongho Kim and Jishan Wu",
year = "2018",
month = "1",
day = "1",
doi = "10.1039/c7sc05493a",
language = "English",
volume = "9",
pages = "3395--3400",
journal = "Chemical Science",
issn = "2041-6520",
publisher = "Royal Society of Chemistry",
number = "13",

}

Wang, J, Kim, G, Sandoval-Salinas, ME, Phan, H, Gopalakrishna, TY, Lu, X, Casanova, D, Kim, D & Wu, J 2018, 'Stable 2D anti-ferromagnetically coupled fluorenyl radical dendrons', Chemical Science, vol. 9, no. 13, pp. 3395-3400. https://doi.org/10.1039/c7sc05493a

Stable 2D anti-ferromagnetically coupled fluorenyl radical dendrons. / Wang, Jian; Kim, Gakhyun; Sandoval-Salinas, María Eugenia; Phan, Hoa; Gopalakrishna, Tullimilli Y.; Lu, Xuefeng; Casanova, David; Kim, Dongho; Wu, Jishan.

In: Chemical Science, Vol. 9, No. 13, 01.01.2018, p. 3395-3400.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Stable 2D anti-ferromagnetically coupled fluorenyl radical dendrons

AU - Wang, Jian

AU - Kim, Gakhyun

AU - Sandoval-Salinas, María Eugenia

AU - Phan, Hoa

AU - Gopalakrishna, Tullimilli Y.

AU - Lu, Xuefeng

AU - Casanova, David

AU - Kim, Dongho

AU - Wu, Jishan

PY - 2018/1/1

Y1 - 2018/1/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85044744706&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85044744706&partnerID=8YFLogxK

U2 - 10.1039/c7sc05493a

DO - 10.1039/c7sc05493a

M3 - Article

AN - SCOPUS:85044744706

VL - 9

SP - 3395

EP - 3400

JO - Chemical Science

JF - Chemical Science

SN - 2041-6520

IS - 13

ER -

Wang J, Kim G, Sandoval-Salinas ME, Phan H, Gopalakrishna TY, Lu X et al. Stable 2D anti-ferromagnetically coupled fluorenyl radical dendrons. Chemical Science. 2018 Jan 1;9(13):3395-3400. https://doi.org/10.1039/c7sc05493a