X-Band CW-EPR Spectrometer | EPR300

EPR in Paramagnetic Metal lons Research

Due to the presence of unpaired electrons in the atomic orbitals of transition metal ions (including iron, palladium, and platinum group ions with unfilled 3d, 4d, and 5d respectively) and rare earth metal ions (with unfilled 4f shell), these paramagnetic metal ions can be detected by EPR spectrometer to obtain valence and structure information. The transition metal ions usually have multiple states. Parallel mode in a Dual-Mode resonator allows the detection of integer spin systems.

EPR in Free Radical Detection

Free radicals are atoms or groups with unpaired electrons formed when covalent bonds are broken due to external factors such as light or heat. For relatively stable free radicals, EPR can detect them directly and quickly. For short-lived free radicals, they can be detected by spin trapping. For example, hydroxyl radicals, superoxide radicals, singlet oxygen photoradicals, and other free radicals generated by photocatalytic processes.

EPR in Vacancy Research

Vacancy is a concept in solid-state structural chemistry or materials science, that refers to a type of point defect in a crystal where an atom is missing from one of the lattice sites. Common vacancies iaccenclude oxygen vacancies, carbon vacancies, nitrogen vacancies, and sulfur vacancies.

Variable Temperature System (VT System) with Cryostat

Precise temperature control from low to high temperatures

Temperature change directly affects electron spin population and dynamical behavior, so the temperature control technique is crucial for EPR research. Different temperature ranges can reveal different physical, chemical, and biological processes, providing researchers with a deeper understanding of the nature of substances and reaction mechanisms.

In-situ Irradiation Systems

In-situ irradiation systems with automatic optical filter switch

The in-situ irradiation system effectively supports the EPR applications in photocatalysis research. The system flexibly supports in-situ and non-in-situ irradiation experiments and can be equipped with three different light sources to meet diversified research needs. The 6-position motorized optical filter switching system realizes the automatic switching of filters, which greatly improves the experimental efficiency and brings unprecedented convenience for photocatalytic research.

EPR Automated Goniometer

360° automated goniometer for EPR studies in orientation-dependent substances

The automated goniometer enables automatic and precise control from 0° to 360°, providing powerful technical support in EPR studies of orientation-dependent materials such as crystalline materials, diamonds, and jewelry.

EPR Resonators

Various EPR resonators to meet different experimental requirements

High-Q Resonator: As a general-purpose resonator, the high-Q design offers high sensitivity and is suitable for EPR analysis on most samples. It is compatible with both liquid nitrogen and liquid helium ultra-low temperature variable temperature systems.

Dual-Mode Resonator: Tailored for analyzing complex systems—such as transition metal and rare-earth ions that display forbidden transitions—this resonator offers dual measurement modes, both perpendicular and parallel, for enhanced experimental flexibility.

EPR Sample Cells

A wide range of sample cells for multiple research uses

Flat Cell: Support solvent systems with dielectric loss, significantly improving detection sensitivity.

Electrolytic Cell: Designed for in-situ electrolysis experiments, easily realizing online monitoring of electrochemical processes.

Flow Cell and Mixing Cell: Equipped with a peristaltic pump. For the in-situ continuous-flow EPR analysis. Easily accomplish in-situ mixing and reaction monitoring of multi-component samples.

Tissue Cell: Designed for biological tissue samples, providing convenient EPR analysis in the biological and medical fields.

Time-Resolved/Transient EPR System

Real-time detection of dynamic changes facilitates the monitoring of photo-excited short-lived free radicals

Time-resolved/transient electron paramagnetic resonance (TR-EPR) integrates time-resolved techniques with paramagnetic resonance spectroscopy, achieving temporal resolutions down to the nanosecond scale. The system primarily comprises a main controller for digital control, a high-energy pulsed laser for stable photoexcitation, a laser energy meter to monitor laser pulse power, and a dielectric resonator for EPR signal detection. TR-EPR is utilized to investigate transient species such as radicals or excited triplet states in rapid reaction processes, detecting and studying these short-lived species with lifetimes in the microsecond to nanosecond range. This capability is crucial for understanding radical reaction kinetics and addresses the detection limitations of traditional equipment regarding short-lived species.

Artificial Intelligence (AI) Enhanced EPR Spectrum Analysis System

AI EPR spectral analysis, applicable to 90% of samples

Automatic linking of literature databases

EPR Spectrometer Modernize

Modernize your aging EPR instrument to meet the rigorous demands of cutting-edge EPR research