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Organic Radical-Linked Covalent Triazine Framework with Paramagnetic Behavior.
- Source :
-
ACS nano [ACS Nano] 2019 May 28; Vol. 13 (5), pp. 5251-5258. Date of Electronic Publication: 2019 Apr 29. - Publication Year :
- 2019
-
Abstract
- The production of multifunctional pure organic materials that combine different sizes of pores and a large number of electron spins is highly desirable due to their potential applications as polarizers for dynamic nuclear polarization-nuclear magnetic resonance and as catalysts and magnetic separation media. Here, we report a polychlorotriphenylmethyl radical-linked covalent triazine framework (PTMR-CTF). Two different sizes of micropores were established by N <subscript>2</subscript> sorption and the presence of unpaired electrons (carbon radicals) by electron spin resonance and superconducting quantum interference device-vibrating sample magnetometer analyses. Magnetization measurements demonstrate that this material exhibits spin-half paramagnetism with a spin concentration of ∼2.63 × 10 <superscript>23</superscript> spins/mol. We also determined the microscopic origin of the magnetic moments in PTMR-CTF by investigating its spin density and electronic structure using density functional theory calculations.
Details
- Language :
- English
- ISSN :
- 1936-086X
- Volume :
- 13
- Issue :
- 5
- Database :
- MEDLINE
- Journal :
- ACS nano
- Publication Type :
- Academic Journal
- Accession number :
- 31033280
- Full Text :
- https://doi.org/10.1021/acsnano.8b09634