作者:Yongchao Liang、A. S. Dvornikov、P. M. Rentzepis
DOI:10.1039/b206577k
日期:2003.2.5
The synthesis of new photochromic 2-indolylfulgide dicyanomethylene derivatives is described and their structures confirmed by X-ray crystallography, NMR, mass spectroscopy and elemental analysis. The molecules exhibit two thermally stable isomeric forms, which are only optically interconverted. The ring-open form absorbs between 400 and 550 nm, while the ring-closed form absorbs in the 650 to 700 nm region. The cyclized form emits fluorescence in the near infrared, with a 0.18 quantum yield. The spectroscopic characteristics described make this molecule suitable for optical switching and optical storage devices.
本文描述了新型光致变色 2-吲哚富尔格二氰基亚甲基衍生物的合成过程,并通过 X 射线晶体学、核磁共振、质谱和元素分析证实了它们的结构。这些分子呈现出两种热稳定的异构形式,它们只在光学上相互转化。开环形式的吸收波长在 400 至 550 纳米之间,而闭环形式的吸收波长在 650 至 700 纳米之间。环化形式在近红外发射荧光,量子产率为 0.18。上述光谱特性使这种分子适用于光学开关和光存储设备。