179485
4-Oxo-TEMPO
Synonym(e):
4-Oxo-2,2,6,6-tetramethyl-1-piperidinyloxy, freies Radikal
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Alle Fotos(3)
About This Item
Empirische Formel (Hill-System):
C9H16NO2
CAS-Nummer:
Molekulargewicht:
170.23
EG-Nummer:
MDL-Nummer:
UNSPSC-Code:
12352000
PubChem Substanz-ID:
NACRES:
NA.22
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Form
solid
Qualitätsniveau
Lagertemp.
2-8°C
SMILES String
CC1(C)CC(=O)CC(C)(C)N1[O]
InChI
1S/C9H16NO2/c1-8(2)5-7(11)6-9(3,4)10(8)12/h5-6H2,1-4H3
InChIKey
WSGDRFHJFJRSFY-UHFFFAOYSA-N
Allgemeine Beschreibung
4-Oxo-TEMPO is formed by the reaction of 2,2,6,6-tetramethyl-4-piperidone (4-oxo-TMP) and 1O2. It is a stable paramagnetic product formed during the irradiation of TiO2 in aqueous suspensions.
Anwendung
4-Oxo-TEMPO was employed as nitroxide standard to investigate the generation of singlet oxygen by photoexcited TiO2 in ethanol by ESR spectroscopy. It may be employed as free radical polarizing agent in dynamic nuclear polarization (DNP) studies.
Free-radical nitroxide spin probe typically used for:
- Redox sources for anodes in lithium secondary batteries
- Free-radical biological studies
- Radical spin-trapping
- Electron paramagnetic resonance studies
- Polymer chemisty and synthesis applications
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Maria-Teresa Türke et al.
Physical chemistry chemical physics : PCCP, 12(22), 5893-5901 (2010-05-11)
Dynamic nuclear polarization is emerging as a potential tool to increase the sensitivity of NMR aiming at the detection of macromolecules in liquid solution. One possibility for such an experimental design is to perform the polarization step between electrons and
Impact of Gd3+ on DNP of [1-13C] pyruvate doped with trityl OX063, BDPA, or 4-oxo-TEMPO.
Lumata L, et al.
The Journal of Physical Chemistry A, 116(21), 5129-5138 (2012)
Tsai-Mu Cheng et al.
Materials science & engineering. C, Materials for biological applications, 114, 111064-111064 (2020-10-01)
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Mark R Kurban et al.
The Journal of chemical physics, 129(6), 064501-064501 (2008-08-22)
Bimolecular collisions between perdeuterated 2,2,6,6-tetramethyl-4-oxopiperidine-l-oxyl molecules in three alkanes have been studied by measuring the electron paramagnetic resonance (EPR) spectral changes induced by spin exchange. We define an "encounter" to be a first-time collision followed by a series of re-encounters
Marina Bennati et al.
Physical chemistry chemical physics : PCCP, 12(22), 5902-5910 (2010-05-12)
Water (1)H relaxation rate measurements of (15)N-(2)H-TEMPONE solutions at temperatures ranging from 298 to 328 K have been performed as a function of magnetic field from 0.00023 to 9.4 T, corresponding to (1)H Larmor frequencies of 0.01 to 400 MHz.
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