N. Kh. Petrov, A. A. Ivanov, D. A. Ivanov, A. B. Fedotov, A. A. Lanin, A. S. Chebotarev
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引用次数: 0
摘要
摘要 利用荧光光谱法，测量了苯乙烯基染料反式-4-[4-（二甲基氨基）苯乙烯基]-1-甲基吡啶鎓碘化物（DASPI）水溶液及其与葫芦[n]脲（CB[n] n = 6-8）的包合物的双光子吸收截面。结果表明，横截面与激发波长和空穴大小之间存在非单调依赖关系。与游离染料相比，在 980 纳米的激发波长下，DASPI 与 CB[8] 的包合物的双光子吸收截面增加了七倍。
Increase in the Two-Photon Absorption Cross Section of Styryl Dye in Supramolecular Complexes with Cucurbiturils
Abstract
Using fluorescence spectroscopy, the two-photon absorption cross sections of aqueous solutions of the styryl dye trans-4-[4-(dimethylamino)styryl]-1-methylpyridinium iodide (DASPI) and its inclusion complexes with cucurbit[n]urils (CB[n] n = 6–8) have been measured. A nonmonotonic dependence of the cross section on the excitation wavelength and on the cavitand cavity size has been revealed. Compared to the free dye, a sevenfold increase in the two-photon absorption cross section has been observed in DASPI inclusion complexes with CB[8] at an excitation wavelength of 980 nm.
期刊介绍：
High Energy Chemistry publishes original articles, reviews, and short communications on molecular and supramolecular photochemistry, photobiology, radiation chemistry, plasma chemistry, chemistry of nanosized systems, chemistry of new atoms, processes and materials for optical information systems and other areas of high energy chemistry. It publishes theoretical and experimental studies in all areas of high energy chemistry, such as the interaction of high-energy particles with matter, the nature and reactivity of short-lived species induced by the action of particle and electromagnetic radiation or hot atoms on substances in their gaseous and condensed states, and chemical processes initiated in organic and inorganic systems by high-energy radiation.
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