Synthesis and optical properties of naphthopyran dyes conjugated with fluorescent stilbazolium moieties

Synthesis and optical properties of naphthopyran dyes conjugated with fluorescent stilbazolium moieties
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与荧光芪唑基团缀合的萘并吡喃染料的合成和光学性质

DOI:
10.1039/c3nj41130c
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发表时间:
2013
影响因子:
3.3
通讯作者:
S. Spange
S. Spange
中科院分区:
化学3区
文献类型:
--
作者:
I. Kahle;O. Tröber;H. Richter;S. Spange

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本文报道了由二苯乙烯或4-乙烯基喹啉取代的新的~3H-萘并[2,1-b]吡喃染料的合成及其光化学性质。在非极性介质中,萘并吡喃-二苯乙烯偶联物没有表现出任何光致变色反应,而在强极性介质中促进了开环物种的形成。对新染料在介孔MCM-41颗粒孔内的进一步研究表明,与在溶液中相比,其光致变色性有显著的增强。在紫外光照射下,开环物种的产生伴随着荧光强度的降低,这可以通过可见光照射来恢复。
The synthesis of new 3H-naphtho[2,1-b]pyran dyes substituted at position 8 of the naphthalene ring by either a stilbazolium or an 4-ethenyl-quinolinium group and their photochemical properties are described. In non-polar media the naphthopyran–stilbazolium conjugates do not show any photochromic response while the formation of the ring opened species is promoted in strong polar media. Additional investigations of the new dyes within the pores of mesoporous MCM 41 particles showed a significant enhancement of the photochromism compared with that in solution. The generation of the ring-opened species upon irradiation with UV-light is accompanied by a decrease of the fluorescence intensity, which could be recovered by illumination with visible light.
半花青单层的非线性光学性质和质子化效应
DOI: --
发表时间: 1988
期刊:
影响因子: --
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G. Marowsky;L. Chi;D. Möbius;R. Steinhoff;Y. Shen;D. Dorsch;B. Rieger
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