Photosensitizing dyes are often used in conjunction with a photoacid generator in holographic recording media. Conventional photosensitizing dyes typically are limited by having an appreciable absorption of light when used in a sufficient concentration, such that the intensity of light decreases significantly with penetration into a recording medium. The present invention discloses a number of new 5-alkynyl substituted napthacene photosensitizing dyes that have low extinction coefficients coupled with good sensitizing properties, such that the problems associated with the photosensitizing dyes absorbing light are significantly reduced.
光敏
染料通常与光酸发生剂一起在全息记录介质中使用。传统的光敏
染料通常受到限制,因为在足够浓度下使用时,它们吸收光的程度相当高,导致光线穿透记录介质时光强度显著降低。本发明揭示了一些新的5-炔基取代
萘并光敏
染料,其消光系数低且具有良好的敏化性能,从而显著降低了与光敏
染料吸收光有关的问题。