We are excited to share the success of Weijin Li’s first-time independent article in ChemComm; “Bionic electroluminescent perovskite light-emitting device” included in the full milestones collection.
Read our interview with Weijin below.
What are the main areas of research in your lab and what motivated you to take this direction?
My lab’s research areas include open framework materials (e.g. metal-organic frameworks, hydrogen organic frameworks), thin films and their electrical (e.g. dielectric)/ luminescent/sensing properties. Focus on the scientific questions inside the energy conversion, I am motivated to take the direction of dielectric control of open framework materials and film assembly. By controlling the dielectric constant and consumption, we aim to design either high-dielectric materials for energy storage or dielectric materials for electromagnetic radiation shielding. Besides, human health will face a great threat if one contacts polluted gas, water and some other agents. Inspired by the sensing mechanism of open framework materials based on a dielectric or luminescent behaviour change, we will also take the direction of dielectric and luminescent materials for sensing devices.
Can you set this article in a wider context?
The novelty of this work is in its configuration of fluorescent films. The ultrafast dynamic color change with ultra-high-definition flat panel display was realized in a simple and facile way based on perovskite light-emitting-diodes (PeLED). A PeLED displaying green color is combined with a brown fluorescent coating layer to form a hybrid FC-PeLED system. The FC-PeLED system can simulate the complete cycle of bionic plant colors from green to yellow through low energy (<0.6 mW) input. Thanks to the low-power-consumption/high-brightness of the PeLED and the color adjustability of the fluorescent layer, we built a new type of bionic electroluminescence system (FC-PeLED). The bionic process for the entirely natural process of ginkgo leaves realized by the obtained FC-PeLED will promote the future development of low-cost and low-power consumption bionic technology.
What do you hope your lab can achieve in the coming year?
In the coming year, we hope to develop crystalline coordination polymers with fast bionic color change at the stimulation of an electrical field and reveal the electrochromic mechanism. Focus on our research direction, both theoretical and experimental insights of dielectric materials based on conductive coordination polymers are going to be brought to light in the coming year.
Describe your journey to becoming an independent researcher.
I obtained my PhD degree under the supervision of Prof. Rong Cao (NSFC distinguished professor) at the Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences in 2015, where my thesis was “Preparation and properties of carboxyl-based metal-organic frameworks film”. Since 2016, I join Prof. Cao’s lab in Xiamen University, with the close collaboration of Prof. Xinchen Wang at Fuzhou University and Prof. Lasheng Long and Prof. Jun Tao at Xiamen University, on the topic of dielectric properties of metal-organic framework thin film. After a one-year postdoctoral stay at Xiamen University, I joined Prof. Roland A. Fischer’s group at the Chair of Inorganic and Metal-organic Chemistry, Department of Chemistry, Technical University of Munich, Germany (2016-2021), under funding support from the Joint Chinese Scholarship Council-German Academic Exchange Service (CSC-DAAD), an Alexander von Humboldt fellowship and German Research Foundation (DFG), and worked on preparation and study of metal-organic framework thin film for electrocatalysis. I was awarded the Japan Society for the Promotion of Science Fellowship under the host of Prof. Takuzo Aida in Riken with the research on “mass transport in two-dimensional nanospace formed by polymeric nanosheets”. Unfortunately, due to the 2019-coro pandemic situation, I was unable to join Prof. Aida and just worked with Prof. Aida and colleagues online for some research exchanges and discussions. By chance, I was granted an Overseas High-level Recruitment of Talents-Youth Project in 2021. Then, I began my independent Professorship at the School of Materials Sciences and Engineering, Nanjing University of Science and Technology with an interest in open framework materials and their dielectric/luminescent/sensing properties.
What is the best piece of advice you have ever been give?
“Perseverance is helpful for researchers since it is common that researcher obtains more negative results than good results.”
Why did you choose to publish in ChemComm?
I published a work “patterned growth of luminescent metal-organic framework film: a versatile method for electrochemical-assisted microwave deposition” and also see recent publications in ChemComm related luminescent materials. Consideration of the novelty of my work, thus I decide to submit it to ChemComm.
|Weijin Li received his Ph.D. at Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences in 2015. During six years of postdoctoral experience across Xiamen University, China (2015-2016) and Technical University of Munich, Germany (2016-2021), Weijin received the research awards of an Alexander von Humboldt fellowship and Japan Society for the Promotion of Science. Granted Overseas High-level Recruitment of Talents-Youth Project, Weijin began his independent Professorship at the School of Materials Sciences and Engineering, Nanjing University of Science and Technology in 2021. His research interest focuses on inorganic and organic hybrid materials and their dielectric/luminescent/sensing properties.
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