敏光劑吸附沸石微粒之光電研究

張育甄(Yu Chen Chang)

指導教授 ： 王忠茂

國立臺灣師範大學/理學院/化學系/碩士(2000年)

摘要

由於有機敏光劑可於照光時顯現氧化力，本論文於是對多種敏光劑，如：thionine (簡稱TH)、phenosafranin (簡稱PSF)、phenazine methosulfate (簡稱PZM)、rose bengal (簡稱RB)、9-cyanoanthracene (簡稱CA)及9,10-dicyanoanthracene (簡稱DCA)的光電性質進行探討，並將之吸附於載體—Zeolite (NaY)中。根據螢光放射光譜、循環伏安法及暫態螢光光譜實驗，含敏光劑的沸石微粒於照光時可將電子授予者，如diphenylamine (簡稱DPA)氧化。
利用此一光誘發電子轉移反應，吾人成功地製備出一無銀感光薄膜，此感光薄膜於照光時可催化N,N-diethyl-2-methyl-1,4-phenylenediamine （簡稱DEPD）之氧化，並使其與α-naphthol進行偶合反應而生成藍色產物—Indophenol blue。
本實驗也將敏光劑之氧化力應用於選擇性氟化反應，實驗結果顯示：多數敏光劑可使有機物如Ph3P與Ph3CH在AgF存在下氟化產生Ph3PF2及Ph3CF。

關鍵字

沸石 ； 敏光劑 ； 氟化反應 ； 感光薄膜

並列摘要

In this thesis, many photosensitive compounds, such as thionine (denoted TH), phenosafranin (denoted PSF), phenazine methosulfate (denoted PZM), rose bengal (RB), 9-cyanoanthracence (CA) and 9,10-dicyanoanthracence (DCA), and their zeolite-modified particles have been investigated for their potential in photoelectrochemical applications. According to emission spectroscopy and cyclic voltammetry as well as laser flash photolysis, these dyes showed strong oxidation ability as being brought to their excited states. For instance, most of them can oxidize electron donor, like diphenylamine (denoted DPA), as exposed to irradiation.
Based on these photochemical properties, a non-silver-based photographic system was developed. Indophenol blue was formed on the surface of the films made with dye-modified zeolite particles, N,N-diethyl –1,4-phenylenediamine (DEPD) and α-naphthol during illumination. Experimental results also showed that organic compounds, like triphenylphosphine (denoted Ph3P) and triphenylmethane (denoted Ph3CH), could be selectively fluorinated in the presence of fluoride ions and these dyes.

並列關鍵字

Zeolite ； photosensitizer ； Fluorination ； photographic film

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