Development and Application of Functional Near Infrared Dyes

1.合成了含氧杂蒽鎓、硫代氧杂蒽鎓、硒代氧杂蒽鎓体系的染料炔类化合物，这些染料在近红外（near-IR）区域具有吸收.合成了三种取代的1-戊烯-4-炔-3-醇衍生物的乙基新醌类染料，并研究了它们的光谱性质，发现它们在近红外区有明显的吸收。本文报道了乙炔类3，6-双（二甲氨基）芴鎓染料的合成及其在CH_2Cl_2溶液中的近红外光吸收（最大吸收波长1056 nm）。充分考察了取代基对最大吸收的影响。这些染料的发色团体系虽然不大，但其光谱特征显著，二苯甲烷单元的omicron-和omicron '-位置的关环导致吸收带向近红外区的大幅红移很难归因于平面性的增加。中心结构单元的反芳香性或/和双自由基性质将在共轭中起重要作用。本文报道了一种由1，1-二芳基-2-丙炔-1-OIS合成芳基取代的推拉丁二烯类染料的简便方法。详细考察了几种底物的反应范围。这类染料可用于非线性光学材料.对所制备的三苯甲烷类染料炔类化合物的各种功能特性进行了全面的考察.在PPP-CI-MO计算的基础上讨论了它们的特征吸收性质。

1. It was found that the dye ethynologs containing xanthenylium, thioxanthenylium, or selenoxanthenylium system have been synthesized and these dyes have absorptions in the near-infrared (near-IR) region.2. The dye ethynovinylogs derived from three substituted 1-penten-4-in-3-ols have been prepared and their spectral properties were examined to show absorptions in the near-IR.3. Acetylenic analogs 3, 6-bis (dimethylamino) fluorenylium dyes, which absorb near-IR light (up to 1056nm in CH_2 Cl_2), have been prepared. The effects on the absorption maxima by substituents were fully examined. Although the chromophore systems of these dyes are not large, their spectral features are remarkable.The characteristically large bathochromic shifts of the absorption bands into near-IR region by ring closure of the omicron- and omicron'-positions of the diphenylmethane units could hardly ascribed to increase of planarity. The antiaromatic or/and diradicaloid nature of the central cyclopentadienyl unit will play a significant role in conjugation.4. A simple and convenient method was newly developed to afford aryl-substituted push-pull butadienes, i.e. a class of merocyanine dyes from 1,1-diaryl-2-propyn- 1-OIS. The scope of the reaction applying for several substrates was examined in detail. These dyes are excected for non-linear optics materials.5. Various functional characters of the triphenylmethane dye ethynologs prepared are fully examined.6. Their characteristic absorption properties were discussed on the basis of PPP-CI-MO calculations.