Novel class of pyrylium dyes with high efficiency in lasing and two-photon absorption fluorescence
Novel class of pyrylium dyes with high efficiency in lasing and two-photon absorption fluorescence
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DOI：
10.1016/s0009-2614(00)00494-2
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发表时间：
2000-06-09
影响因子：
2.8
通讯作者：
Mikroyannidis, J
中科院分区：
文献类型：
--
作者：
Fakis, M;Polyzos, J;Mikroyannidis, J
本文报道一类具有激光和双光子吸收作用的吡喃染料的合成。这类化合物的三个代表是4-（2，4-二氯苯基）-2，6-二苯基吡喃四氟硼酸盐、4-苯基-2，6-双（4-甲氧基苯基）吡喃四氟硼酸盐和4-（？，4-二氯苯基）-2，6-双（4-联苯基）吡喃四氟硼酸盐的合成。每种染料都是通过一种方便而廉价的方法合成的。在类似于500、类似于560、类似于615 nm处显示出有效的激光作用。改变共轭长度，即低聚苯基部分的长度，或在芳环上引入各种取代基，可以控制发射最大值。双光子吸收诱导荧光也被观察到。这些吡喃染料构成了激光技术和双光子吸收应用的优秀候选者。(C)2000 Elsevier Science B. V.保留所有权利。
We report the synthesis of a promising class of pyrylium dyes concerning laser and two-photon absorption action. Three representatives of this class, 4-(2,4-dicNorophenyl)-2,6-bisphenylpyrylium tetrafluoroborate, 4-phenyl-2,6-bis(4-methoxyphenyl)pyrylium tetrafluoroborate, and 4-(?,4-dichlorophenyl)-2,6-bis(4-biphenyl)pyrylium tetrafluoroborate, were investigated. Each dye was synthesized by a convenient and inexpensive method. Efficient laser action was shown at similar to 500, similar to 560, similar to 615 nm. Changing the conjugation length i.e. the length of the oligophenyl moiety, or introducing various substituents on the aromatic rings, the emission maximum can be controlled. Two-photon absorption induced fluorescence was also observed. These pyrylium dyes constitute excellent candidates for laser technology and two-photon absorption applications. (C) 2000 Elsevier Science B.V. All rights reserved.