Abstract
We successfully synthesized, for the first time, a naphthalene diimide (NDI) radical and diradical by simple chemical oxidation using lead(IV) dioxide. The formation of the (di)radical is confirmed by UV/Vis/NIR absorption, 1H NMR, and electron paramagnetic resonance (EPR) measurements. In particular, temperature-dependent EPR, SQUID (superconducting quantum interference device) measurements, and quantum calculations demonstrated that the generated NDI diradical has a singlet diradical character of y=0.69 in the ground state. Subsequent characterization of this (di)radical revealed its stabilities, large two-photon absorption cross-section, and short excited-state lifetime.
| Original language | English |
|---|---|
| Pages (from-to) | 591-595 |
| Number of pages | 5 |
| Journal | ChemPhysChem |
| Volume | 18 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2017 Mar 17 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
- Physical and Theoretical Chemistry
Cite this
}
Radical and Diradical Formation in Naphthalene Diimides through Simple Chemical Oxidation. / Lee, Sangsu; Miao, Fang; Phan, Hoa; Herng, Tun Seng; Ding, Jun; Wu, Jishan; Kim, Dongho.
In: ChemPhysChem, Vol. 18, No. 6, 17.03.2017, p. 591-595.Research output: Contribution to journal › Article
TY - JOUR
T1 - Radical and Diradical Formation in Naphthalene Diimides through Simple Chemical Oxidation
AU - Lee, Sangsu
AU - Miao, Fang
AU - Phan, Hoa
AU - Herng, Tun Seng
AU - Ding, Jun
AU - Wu, Jishan
AU - Kim, Dongho
PY - 2017/3/17
Y1 - 2017/3/17
N2 - We successfully synthesized, for the first time, a naphthalene diimide (NDI) radical and diradical by simple chemical oxidation using lead(IV) dioxide. The formation of the (di)radical is confirmed by UV/Vis/NIR absorption, 1H NMR, and electron paramagnetic resonance (EPR) measurements. In particular, temperature-dependent EPR, SQUID (superconducting quantum interference device) measurements, and quantum calculations demonstrated that the generated NDI diradical has a singlet diradical character of y=0.69 in the ground state. Subsequent characterization of this (di)radical revealed its stabilities, large two-photon absorption cross-section, and short excited-state lifetime.
AB - We successfully synthesized, for the first time, a naphthalene diimide (NDI) radical and diradical by simple chemical oxidation using lead(IV) dioxide. The formation of the (di)radical is confirmed by UV/Vis/NIR absorption, 1H NMR, and electron paramagnetic resonance (EPR) measurements. In particular, temperature-dependent EPR, SQUID (superconducting quantum interference device) measurements, and quantum calculations demonstrated that the generated NDI diradical has a singlet diradical character of y=0.69 in the ground state. Subsequent characterization of this (di)radical revealed its stabilities, large two-photon absorption cross-section, and short excited-state lifetime.
UR - http://www.scopus.com/inward/record.url?scp=85011339277&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85011339277&partnerID=8YFLogxK
U2 - 10.1002/cphc.201700015
DO - 10.1002/cphc.201700015
M3 - Article
VL - 18
SP - 591
EP - 595
JO - ChemPhysChem
JF - ChemPhysChem
SN - 1439-4235
IS - 6
ER -