CIQTEK at the 12th Asia-Pacific EPR/ESR Symposium (APES 2022)

CIQTEK is happy to sponsor the 12th Asia-Pacific EPR/ESR Symposium (APES 2022) in Hangzhou, China during November 4-7, 2022. The symposium this year is an online event for international speakers and participants, a new start for Asia-Pacific EPR/ESR Society in the post-epidemic era.
The main aims of APES 2022 are to bring together EPR/ESR spectroscopists and to promote and facilitate collaboration among the EPR/ESR community. APES 2022 is intended to stimulate discussions on the forefront of research in all aspects of EPR/ESR ranging from theoretical and experimental advances in CW/Pulsed EPR, high frequency, and high field EPR, ENDOR, PEDLOR/DEER, time-resolved EPR, FMR, MRI, ODMR to applications in medicine, biology, chemistry, materials science and nanotechnology. 

CIQTEK Moments at APES 2022

Moment 1: On November 4th, CIQTEK had a presentation entitled "Introduction to EPR spectrometers of CIQTEK" by Dr. Zhifu Shi, Technical Director of EPR, CIQTEK.




Moment 2: On November 6th, Dr. Haijun Yang, Tsinghua University, Beijing, China, made a speech entitled "Construction and Applications of EPR at 6 K Ultra-low Temperature". In his speech, Dr. Yang mentioned that his team made research progress based on the CIQTEK X-band EPR spectrometer EPR100.

Abstract of the Presentation:
There were four main advantages of cryogenic technology in EPR research: (1) Improve the sensitivity of the spectrometer; (2) Increase the sample stability; (3) Weaken the effect of polar solvents on solution samples, and (4) Extend T1 and T2 relaxation for the better detection of spin echoes. Currently, the ultra-low temperature EPR is commonly performed by a liquid helium cooling system. Due to issues such as rising gas prices, cryogenic systems were expensive and difficult to run continuously for a long time. In collaboration with CIQTEK, a dry temperature-variable unit was constructed successfully with helium as the circulating gas. On the CIQTEK X-band EPR spectrometer (EPR100), this temperature-variable unit achieved a wide temperature range of 6 K to 300 K and afforded a long continuous operation time of more than 200 hours. The cost is less than five percent of the liquid helium cooling system. For the coal sample tested by the CW EPR, the double integration area of the EPR signal acquired at 6 K was nearly 42 times larger than that at 293 K. In addition, the following two applications have been proposed for the dry 6 K ultra-low temperature EPR technology. (1) For the diradicals, how to test the spin state from singlet and triplet? And how to calculate the energy gap of singlet−triplet (ΔEST)? (2) How to study the structure of Cu2+ complexes in solution using electron spin echo envelope modulation (ESEEM) pulse experiments? This novel dry temperature-variable unit prevents the consumption of helium due to closed circulation, saving the noble helium and reducing the cost of the EPR spectrometer’s operation, which propels research in related fields.

Biography of Dr. Haijun Yang
Dr. Haijun Yang holds a B.Sc. from the department of chemical engineering of Tsinghua University (1999), an M.Sc. (2003), and a Ph.D. degree (2011) from the chemistry department of Tsinghua University. He worked at the analysis center of Dept. Chemistry at Tsinghua university since 2003, and studied as a visiting scholar at Harvard Medical School from Nov. 2014 to Dec. 2015. His main research interest is the new technology of magnetic resonance spectroscopy and its applications on organic reaction mechanisms.


Moment 3: CIQTEK Sponsored Young Scientist Award at the 12th Asia-Pacific EPR/ESR Symposium (APES 2022)

CIQTEK sponsored the lectureship and award, given to a young scientist who has made a great contribution to electron paramagnetic resonance (EPR or ESR) research. At the 12th Asia-Pacific EPR/ESR Symposium (APES 2022), the CIQTEK Sponsored Young Scientist Award was awarded to Dr. Fei Kong, CAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences, University of Science and Technology of China. As winner of the 2022 competition, Dr. Fei Kong was invited to gave a prize lecture, "Zero-field EPR spectroscopy based on quantum sensors", at the conference, on November 6th. 
Check more details at: CIQTEK Sponsored Young Scientist Award at the 12th Asia-Pacific EPR/ESR Symposium (APES 2022)


Moment 4: CIQTEK Sponsored Excellent Oral Presentation Award at the 12th Asia-Pacific EPR Symposium (APES2022)
The Excellent Oral Presentation Awards are presented during the closing ceremony of the 12th Asia-Pacific EPR Symposium (APES2022) on November 7th, 2022. CIQTEK is pleased to sponsor this award to scientists who have contributed significantly to electron paramagnetic resonance (EPR or ESR) research. This time, congratulations to Dr. Shen Zhou from the National University of Defense Technology, Dr. Sergey Veber from the International Tomography Center of SB RAS, and Dr. Zhiyuan Zhao from the University of Science and Technology of China for winning the awards.
Check more details at: CIQTEK Sponsored Excellent Oral Presentation Award at the 12th Asia-Pacific EPR Symposium (APES2022)

CIQTEK EPR (ESR) Spectroscopy

Originating from the Key Laboratory of Microscopic Magnetic Resonance of the Chinese Academy of Sciences at the University of Science and Technology of China, CIQTEK has been deeply engaged in the field of high-end scientific instruments such as electronic paramagnetic resonance (EPR) spectroscopy for more than ten years.

EPR (ESR) spectroscopy is a method to study the structure, dynamics, and spatial distribution of unpaired electronics. It can provide in-situ and non-destructive information on electron spins, orbitals, and nuclei at the microscopic scale. They are particularly useful for studying metal complexes or free radicals.

 




The CIQTEK benchtop EPR200M features high sensitivity, high accuracy, and high stability; integrated instrument control software, data processing software, and spectrum fitting software; supports manual and automated tuning; built-in specimen for accurate g-value determination and quantitative EPR (ESR) measurement, and can be equipped with multifunctional accessories such as variable temperature measurement, automatic corner turner, and in-situ illumination. The EPR200M provides a cost-effective, low-maintenance, simple, and easy-to-use experience for every EPR (ESR) experiment user. Notably, the EPR200M requires no on-site installation, only online service to solve all installation and adjustment problems.