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Abstract <p>The magnitude of the optoacoustic effect in aqueous solutions of the styryl dye 4-[(<i>E</i>)-2-(3,4-dimethoxyphenyl)ethenyl]-l-ethylpyridinium perchlorate in the presence of 0.5 equiv cucurbit[8]uril (CB[8]) has been found to depend on the [2 + 2] photocycloaddition reaction, which effectively occurs in the CB[8] cavity and serves as an additional nonradiative channel for pump energy conversion in the 418-nm region. Moreover, the fraction of excitation energy converted to heat is three times lower in the presence of CB[8] than for solutions of the free dye.</p>

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Optoacoustic Effect in the Study of the [2 + 2] Photocycloaddition Reaction of a Styryl Dye in a 2 : 1 Inclusion Complex with Cucurbit[8]uril

  • 期刊论文

  • 发表日期：

    2026年2月1日

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  • I. V. Kryukov,
  • N. Kh. Petrov,
  • N. A. Aleksandrova,
  • S. P. Gromov

摘要

Abstract

The magnitude of the optoacoustic effect in aqueous solutions of the styryl dye 4-[(E)-2-(3,4-dimethoxyphenyl)ethenyl]-l-ethylpyridinium perchlorate in the presence of 0.5 equiv cucurbit[8]uril (CB[8]) has been found to depend on the [2 + 2] photocycloaddition reaction, which effectively occurs in the CB[8] cavity and serves as an additional nonradiative channel for pump energy conversion in the 418-nm region. Moreover, the fraction of excitation energy converted to heat is three times lower in the presence of CB[8] than for solutions of the free dye.