The Chemical Society of Japan Acta Medica Okayama 0366-7022 51 9 2022 Polyiodide Production Triggered by Acidic Phase of Aqueous Solution Confined in Carbon Nanospace 971 974 EN Takahiro Ohkubo Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University Yuri Hirano Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University Hiroki Nakayasu Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University Yasushige Kuroda Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University Polyiodide species were synthesized by the acceleration of an acidic environment in the nanospace of single-walled carbon nanotubes (SWCNT) with light irradiation. Raman and EXAFS results strongly support the production of polyiodide species after the adsorption of CsI on SWCNT from aqueous solution. Interestingly, the reaction was initiated by the nano-confined acidic phase formed in a basic environment. The acidic phase plays an essential role as an oxidant for the production of the diiodine that is a source of polyiodide. No potential conflict of interest relevant to this article was reported.

The Chemical Society of Japan Acta Medica Okayama 1348-0634 85 9 2012 Electroconductive π-Junction Au Nanoparticles 957 961 EN Masayuki Kanehara Jun Takeya Takafumi Uemura Hideyuki Murata Kazuo Takimiya Hikaru Sekine Toshiharu Teranishi The fabrication of printed electronic circuits using solution-based electroconductive materials at low temperature is essential for the realization of modern printed electronics including transistors, photovoltaic cells, and light-emitting devices. Despite the progress in the field of semiconductor solution materials, reliable electrodes are always fabricated by a vacuum deposition process resulting in only partially solution-processed devices. In this paper, we show that planar phthalocyanine-conjugated Au nanoparticles (NPs) significantly improve the interparticle-carrier-transport properties. The deposition of a solution of the Au NPs under ambient conditions results in an electroconductive metallic thin film without further post-treatment. Maximum conductivity reaches >6600 S cm−1 and the conductivity remains unchanged for at least 1 year under ambient conditions. The all-solution-processed organic field-effect transistor (OFET) fabricated under ambient conditions exhibits mobility values as high as 2 cm2 V−1 s−1, the value of which is comparable to OFET devices having vacuum-deposited Au electrodes. No potential conflict of interest relevant to this article was reported.