The fourth CS3, with the theme "Chemistry for Next Generation Sustainable Electronics" was held in San Francisco. The CS3 (Chemical Sciences and Society Summit) provides the opportunity for chemists from the chemical societies of Germany, the United Kingdom, China, the United States, and Japan to meet every year and freely discuss from a chemistry perspective the important topic selected for the summit. The first CS3 meeting was held in 2009, and this year was the fourth. This unique meeting is organized by scientists, as well as representatives from various chemical societies and funding agencies.

From Japan, Prof. Takuzo Aida (The University of Tokyo, Leader), Prof. Mitsuo Sawamoto (Kyoto University), Dr. Yoshiharu Sato (Mitsubishi Chemical Science Technology Research Center, ERATO), Prof. Takao Someya (The University of Tokyo), Prof. Kazuo Takimiya (Hiroshima University), and Prof. Masahiro Yamashita (Tohoku University), attended as a team. Prof. Mitsuhiko Shionoya (The University of Tokyo), representing Japan Society for the Promotion of Science, and Nobuyuki Kawashima (Executive Director, CSJ) representing the Chemical Society of Japan also attended.

1. Small molecules and polymers for electronics, 2. Function and design of carbon materials, 3. Molecular structure: from application to self-assembly and patterning, organic light emitting diodes (OLED), organic solar cells (OPV), and organic field-effect transistors (OFET) over the last decade, and expectations for the next decade, in particular development and popularization of OLED, OPV, and carbon material systems (for example, C60 and graphene) were discussed. A report from a science writer and attendees will be published at the end of February next year, and next year Japan will be the host country of the final summit.

Past topics: Powering the World with Sunlight (2009), Sustainable Materials (2010), Chemistry for Better Life (2011) are planned to be uploaded by mid October.