Molecular Function of Counting the Numbers 1 and 2 Exhibited by a Sulfoneamidohelicene Tetramer |
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| Authors: | Dr. Masanori Shigeno Yo Kushida Yuta Kobayashi Prof. Dr. Masahiko Yamaguchi |
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| Affiliation: | Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University 6‐3 Aoba, Sendai 980‐8578 (Japan), Fax: (+81)?22‐795‐6811 |
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| Abstract: | The sulfoneamidohelicene tetramer in solution exhibits different molecular responses to the same cooling stimulus delivered once and twice under thermal hysteresis conditions. Its random‐coil state at a high temperature was cooled and maintained at a given temperature for which its molecules remained in a random coil (first cooling); the resulting solution was heated and cooled, after which a helix dimer formed (second cooling). Such a property can be regarded as a molecular function of counting the numbers 1 and 2. |
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| Keywords: | counting helical structures sulfonamides thermal hysteresis threshold |
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