Scholarlink

<p>The structures and complexation of cross-conjugated dienones (ketocyanine dyes), such as bis(N-phenylaza-18-crown-6)-containing and model bis(diethylamino)-containing dibenzylidenecyclobutanones, with EtNH<sub>3</sub><sup>+</sup> and 1,ω-alkanediammonium ions (<sup>+</sup>H<sub>3</sub>N(CH<sub>2</sub>)<sub><i>n</i></sub>NH<sub>3</sub><sup>+</sup>, <i>n</i> = 2–10, 12) were investigated by NMR, absorption, luminescence, and laser kinetic spectroscopy in MeCN. Ditopic bis(azacrown)-containing dienone and alkanediammonium ions with a short polymethylene chain form 1 : 1, 1 : 2, and 2 : 2 complexes, whereas 1,ω-alkanediammonium ions with a long polymethylene chain form only 1 : 1 complexes having a pseudocyclic structure. The photophysical properties of the complexes of dienones with the ammonium ions were investigated. The complexation of bis(azacrown)-containing dienone with <sup>+</sup>H<sub>3</sub>N(CH<sub>2</sub>)<sub><i>n</i></sub>NH<sub>3</sub><sup>+</sup> ions (<i>n</i> = 7–10, 12) leads to an increase in the lifetime of the triplet state of the dienone. Evidence was obtained for the photorecoordination of NH<sub>3</sub><sup>+</sup> groups in the cavities of the azacrown moieties of the bis(azacrown)-containing dienone.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Bis(aza-18-crown-6)-containing dibenzylidenecyclobutanone: structure and photonics of its supramolecular complexes with alkanediammonium ions

  • 期刊论文

  • 发表日期：

    2026年2月1日

查看全文
  • M. V. Fomina,
  • I. P. Zdorovenko,
  • V. N. Gutrov,
  • A. I. Vedernikov,
  • V. N. Nuriev,
  • D. S. Ionov,
  • D. E. Makhrov,
  • A. K. Chibisov,
  • S. P. Gromov

摘要

The structures and complexation of cross-conjugated dienones (ketocyanine dyes), such as bis(N-phenylaza-18-crown-6)-containing and model bis(diethylamino)-containing dibenzylidenecyclobutanones, with EtNH3+ and 1,ω-alkanediammonium ions (+H3N(CH2)nNH3+, n = 2–10, 12) were investigated by NMR, absorption, luminescence, and laser kinetic spectroscopy in MeCN. Ditopic bis(azacrown)-containing dienone and alkanediammonium ions with a short polymethylene chain form 1 : 1, 1 : 2, and 2 : 2 complexes, whereas 1,ω-alkanediammonium ions with a long polymethylene chain form only 1 : 1 complexes having a pseudocyclic structure. The photophysical properties of the complexes of dienones with the ammonium ions were investigated. The complexation of bis(azacrown)-containing dienone with +H3N(CH2)nNH3+ ions (n = 7–10, 12) leads to an increase in the lifetime of the triplet state of the dienone. Evidence was obtained for the photorecoordination of NH3+ groups in the cavities of the azacrown moieties of the bis(azacrown)-containing dienone.