Elexsys x band spectrometer

Manufactured by Bruker

Sourced in Germany, United States

The ELEXSYS X-band spectrometer is a laboratory instrument designed for electron paramagnetic resonance (EPR) spectroscopy. It operates at X-band microwave frequencies and is capable of detecting and analyzing the magnetic properties of materials with unpaired electrons.

Automatically generated - may contain errors

Lab products found in correlation

Close spelling variants of this product

Bruker spectrometers (71 citations) ELEXSYS E580 X-band spectrometer (9 citations) Elexsys 500 X-band spectrometer (5 citations) ELEXSYS E500 CW X-band EPR spectrometer (4 citations) ELEXSYS E540 X-band spectrometer (3 citations) ELEXSYS E-500 X-band spectrometer (3 citations) ELEXSYS E500 CW X-band spectrometer (3 citations) Elexsys II E540 EPR X-band spectrometer (2 citations) X-/Q-band E580 FT/CW ELEXSYS spectrometer (2 citations) EleXsys 540 X-band EPR spectrometer (2 citations)

3 protocols using elexsys x band spectrometer

Quantification of Radicals in Pea Leaves

Check if the same lab product or an alternative is used in the 5 most similar protocols

Radicals were detected directly in pea leaves using the electron paramagnetic resonance (EPR) technique [69 (link),70 (link)]. Samples of 1 g fresh weight of pea leaves were frozen in liquid nitrogen and lyophilized in a Jouan LP3 freeze dryer. The lyophilized material was transferred to EPR-type quartz tubes (diameter 4 mm). Electron paramagnetic resonance was measured at room temperature with a Bruker ELEXSYS X-band spectrometer (Rheinstettenstate, Germany). The EPR spectra were recorded as first derivatives of microwave absorption. Microwave power of 2 mW and a 2 G magnetic field modulation were applied in all experiments to avoid signal saturation and deformation
EPR spectra were recorded for free radicals and Mn²⁺ and Fe³⁺ ions in the magnetic field range of 3300–3360 G and with 4096 data points. To determine the number of paramagnetic centres in the samples, the spectra were double-integrated and compared with the intensity of the standard Al₂O₃:Cr³⁺ single crystal with a known spin concentration [34 (link),61 (link),85 (link),86 (link),87 (link),88 (link),89 (link),90 (link)]. Some background corrections of the spectra were introduced before and after the first integration to obtain a reliable absorption signal before the second integration. Concentrations of semiquinone radicals were calculated as the number of spins per 1 g of sample (dry weight/DW).

Woźniak A., Formela M., Bilman P., Grześkiewicz K., Bednarski W., Marczak Ł., Narożna D., Dancewicz K., Mai V.C., Borowiak-Sobkowiak B., Floryszak-Wieczorek J., Gabryś B, & Morkunas I. (2017). The Dynamics of the Defense Strategy of Pea Induced by Exogenous Nitric Oxide in Response to Aphid Infestation. International Journal of Molecular Sciences, 18(2), 329.

+ Open protocol

+ Expand

EPR Analysis of Pistacia vera Samples

Check if the same lab product or an alternative is used in the 5 most similar protocols

Samples (leaves, shoots, and fruits) of P. vera were lyophilized and the lyophilized plant material was transferred to EPR-type quartz tubes of 4 mm in diameter. EPR measurements were performed at room temperature with a Bruker ELEXSYS X-band spectrometer (Bruker, Billerica, MA, USA). The EPR spectra were recorded as first derivatives of microwave absorption. A microwave power of 2 mW and a magnetic field modulation of about 2 G was used for all the experiments to avoid signal saturation and deformation. EPR spectra of free radicals and Mn 2+ were recorded in the magnetic field range of 1400-4200 G. To determine the number of paramagnetic centres in the samples, the spectra were doubleintegrated and compared with the intensity of the standard Al 2 O 3 :Cr 3+ single crystal with a known spin concentration [24, (link)29, (link)[37] (link)[38] (link)[39] (link)[40] (link)[41] (link). Before and after the first integration, some background corrections of the spectra were made to obtain a reliable absorption signal before the second integration. Free radicals gave signals with one g-values of 2.0045 ± 0.0005 while signals of Mn 2+ were recorded with g-values of 2.00 ± 0.01 in leaves, shoots, and fruits.

Morkunas I., Doğu M.Z., Woźniak A., Bednarski W., Kęsy J., Bocianowski J., Atar Ş.H., Urün I., Labudda M., Zydlik Z., Kafkas E., Kafkas S., & Jeandet P. (2021). Profile of Semiquinone Radicals, Phytohormones and Sugars in Pistacia vera L. cv. Kirmizi Development. Agronomy, 11(11), 2115-2115.

+ Open protocol

+ Expand

EPR Spectroscopy of Copper(II) Complexes

Check if the same lab product or an alternative is used in the 5 most similar protocols

EPR spectra were recorded with a Bruker EleXsys X-band spectrometer (microwave frequency 9.81 GHz, microwave power 10 mW, modulation amplitude 5 G, modulation frequency 100 kHz). The [CuL] + complex of His-Gly and for comparison the [CuLH -1 ] complex of Gly-Gly were obtained as major species in equimolar aqueous solutions of the components at 5 mM copper(II) and ligand concentration, the pH of which were adjusted to 5.05 and 7.12, respectively (I = 0.1 M NaClO 4 ). 100 μl solution of each complex was transferred to a quartz EPR tube and the spectra were recorded between 283.2-328.2 K in steps of 5.0 K and at 77 K, respectively. The temperature was adjusted by a liquid nitrogen based temperature controller system with an accuracy of ±0.1 K.

Tóth E.N., May N.V., Rockenbauer A., Peintler G, & Gyurcsik B. (2017). Exploring the boundaries of direct detection and characterization of labile isomers - a case study of copper(ii)-dipeptide systems. Dalton transactions (Cambridge, England : 2003), 46(25).

+ Open protocol

+ Expand

About PubCompare

Our mission is to provide scientists with the largest repository of trustworthy protocols and intelligent analytical tools, thereby offering them extensive information to design robust protocols aimed at minimizing the risk of failures.

We believe that the most crucial aspect is to grant scientists access to a wide range of reliable sources and new useful tools that surpass human capabilities.

However, we trust in allowing scientists to determine how to construct their own protocols based on this information, as they are the experts in their field.

Ready to get started?

Revolutionizing how scientists
search and build protocols!