Synthesis of p-Terphenyl and Benzophenone Derivatives, and Their Properties as Sensitizing Dyes for Application Using Blue Laser Diode

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  • NAGAO Yukinori
    Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science
  • KAJIKAWA Mihoko
    Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science
  • KOZAWA Kozo
    Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science
  • ARIMITSU Kouji
    Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science
  • URANO Toshiyuki
    Science and Technology Center, Mitsubishi Chemical Group

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Other Title
  • ｐ‐テルフェニルおよびベンゾフェノン誘導体の合成とそれらの青色半導体レーザー用増感色素としての性質
  • p-テルフェニルおよびベンゾフェノン誘導体の合成とそれらの青色半導体レーザー用増感色素としての性質
  • p テルフェニル オヨビ ベンゾフェノン ユウドウタイ ノ ゴウセイ ト ソレラ ノ アオイロ ハンドウタイ レーザーヨウ ゾウカン シキソ ト シテ ノ セイシツ

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Recently, blue laser diode (oscillation wavelength : 405 nm) was developed. It has the shortest wavelength in useful semiconductor laser and is expected to be used or already used in applications for direct platemaking system called computer to plate (CTP), next generation disc, and so on. That is the reason materials sensitizing at 405 nm are needed. In this study, p-terphenyl derivatives and benzophenone derivatives were synthesized and the samples of photopolymer were prepared by using synthesized dyes, and the sensitivity for blue lader diode was investigated from the sensitivity spectra of these samples. p-Terphenyl derivatives showed no absorption at 400 nm and have little sensitivities at this wavelength. All benzophenone derivatives showed absorption at the range of 260-440 nm and have sensitivities at this wavelength. Benzophenone derivatives having dimethylamino group or oxyester group showed excellent sensitivities and the excellent sensitizing dyes for blue laser diode were demonstrated.

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