NAIST Graduate School of Materials Science

Jeong Eunjeong of Photofunctional Organic Chemistry Laboratory received an oral presentation award in 2017 GIST–NAIST–NCTU Joint Symposium on Advanced Material

Jeong Eunjeong of Photofunctional Organic Chemistry Laboratory received the Silver Award in 2017 GIST–NAIST–NCTU Joint Symposium on Advanced Materials, held at Gwangju Institute of Science and Technology (GIST), Korea on October 30 and 31, 2017. In this event, a total of 31 students from the three institutes gave oral presentations on their most recent research achievements, and seven students were chosen for awards to recognize their superior presentations.

Molecular Engineering of Tetrabenzoporphyrin toward High-Performance Organic Transistors

Jeong Eunjeong, Mitsuharu Suzuki, Hiroko Yamada

 

I am really honored to receive this award in 2017 GIST–NAIST–NCTU Joint Symposium on Advanced Materials. My special thanks go to Professor Hiroko Yamada and Assit. Professor Mitsuharu Suzuki for their exceptional mentoring. I also want to thank to all the members in Photofunctional Organic Chemistry Laboratory for their kind help in various aspects of my research. With this award as additional motivation, I will keep trying my best to fully develop my research projects.

Tetrabenzoporphyrin (BP) is a highly crystalline p-type small molecule having a large, rigid π-framework, which is advantageous in establishing charge-carrier transport paths in the solid state. However, it has been a challenge to obtain high-quality thin films of BP because of, at least partly, its low solubility hampering the employment of the state-of-art solution-processing techniques that enable effective control of molecular arrangement. In addition, only a limited number of well-soluble derivatives of BP have been reported to date, and little has been investigated about the impact of solubilizing substituents on the solid-state arrangement of BP frameworks and charge-transport properties.

In this work, we evaluated field-effect charge-carrier mobilities in newly designed, well-soluble BP derivatives, named NODMS-BP and NODMS-CuBP. Gratifyingly, thin films prepared by dip coating afforded considerably higher hole mobilities as compared to BP. Especially, high hole mobilities over 4 cm2 V–1 s–1 were observed in crystalline thin films of NODMS-CuBP.

 

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