PMID- 28290532 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20180831 LR - 20181113 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 7 DP - 2017 Mar 14 TI - Platonic Micelles: Monodisperse Micelles with Discrete Aggregation Numbers Corresponding to Regular Polyhedra. PG - 44494 LID - 10.1038/srep44494 [doi] LID - 44494 AB - The concept of micelles was first proposed in 1913 by McBain and has rationalized numerous experimental results of the self-aggregation of surfactants. It is generally agreed that the aggregation number (N(agg)) for spherical micelles has no exact value and a certain distribution. However, our studies of calix[4]arene surfactants showed that they were monodisperse with a defined N(agg) whose values are chosen from 6, 8, 12, 20, and 32. Interestingly, some of these numbers coincide with the face numbers of Platonic solids, thus we named them "Platonic micelles". The preferred N(agg) values were explained in relation to the mathematical Tammes problem: how to obtain the best coverage of a sphere surface with multiple identical circles. The coverage ratio D(N) can be calculated and produces maxima at N = 6, 12, 20, and 32, coinciding with the observed N(agg) values. We presume that this "Platonic nature" may hold for any spherical micelles when N(agg) is sufficiently small. FAU - Fujii, Shota AU - Fujii S AD - Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan. FAU - Yamada, Shimpei AU - Yamada S AD - Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan. FAU - Matsumoto, Sakiko AU - Matsumoto S AD - Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan. FAU - Kubo, Genki AU - Kubo G AD - Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan. FAU - Yoshida, Kenta AU - Yoshida K AD - Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan. FAU - Tabata, Eri AU - Tabata E AD - Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan. FAU - Miyake, Rika AU - Miyake R AD - Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan. FAU - Sanada, Yusuke AU - Sanada Y AD - Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan. FAU - Akiba, Isamu AU - Akiba I AD - Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan. FAU - Okobira, Tadashi AU - Okobira T AD - Department of Chemical Science and Engineering, Ariake National College of Technology, 150 Higashihagio-Machi, Omuta, Fukuoka 836-8585, Japan. FAU - Yagi, Naoto AU - Yagi N AD - Japan Synchrotron Radiation Research Institute (JASRI/SPring-8), 1-1-1 Kouto, Sayo, Sayo, Hyogo 679-5198, Japan. FAU - Mylonas, Efstratios AU - Mylonas E AD - Japan Synchrotron Radiation Research Institute (JASRI/SPring-8), 1-1-1 Kouto, Sayo, Sayo, Hyogo 679-5198, Japan. FAU - Ohta, Noboru AU - Ohta N AD - Japan Synchrotron Radiation Research Institute (JASRI/SPring-8), 1-1-1 Kouto, Sayo, Sayo, Hyogo 679-5198, Japan. FAU - Sekiguchi, Hiroshi AU - Sekiguchi H AD - Japan Synchrotron Radiation Research Institute (JASRI/SPring-8), 1-1-1 Kouto, Sayo, Sayo, Hyogo 679-5198, Japan. FAU - Sakurai, Kazuo AU - Sakurai K AD - Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20170314 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 PMC - PMC5349551 COIS- The authors declare no competing financial interests. EDAT- 2017/03/16 06:00 MHDA- 2017/03/16 06:01 PMCR- 2017/03/14 CRDT- 2017/03/15 06:00 PHST- 2016/09/29 00:00 [received] PHST- 2017/02/08 00:00 [accepted] PHST- 2017/03/15 06:00 [entrez] PHST- 2017/03/16 06:00 [pubmed] PHST- 2017/03/16 06:01 [medline] PHST- 2017/03/14 00:00 [pmc-release] AID - srep44494 [pii] AID - 10.1038/srep44494 [doi] PST - epublish SO - Sci Rep. 2017 Mar 14;7:44494. doi: 10.1038/srep44494.