Journal of the Korean Chemical Society (대한화학회지)

Korean Chemical Society (대한화학회)
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Studies on Photosentitive Polymers (XI). Studies on Photodegradative Reaction of Naphthoquinone-1,2-diazide-5-sulfonyl Esters

感光性 樹脂에 關한 硏究 (第11報). Naphthoquinone-1,2-diazide-5-sulfonyl Esters의 光分解反應

  • Shim Jyong Sup (Department of Chemical Technology, College of Engineering, Seoul National University) ;
  • Kang Doo Whan (Department of Chemical Technology, College of Engineering, Seoul National University)
  • 심정섭 (서울大學校 工科大學 工業化學科) ;
  • 강두환 (서울大學校 工科大學 工業化學科)
  • Published : 1975.08.30
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Abstract

The degradation mechanisms of naphthoquinone-1,2-diazide-5-sulfonyl esters(PGND, BEND and PVAND) of polyglyceryl phthalate (PG), bisphenol A-epichlorohydrin (BE) and polyvinyl alcohol (PVA) were studied by infrared absorption spectra. Absorption band due to C=N=and C=O of o-quinonediazide group decreased or disappeared after sufficient exposing to light. And also, absorption band C=O of indene carboxylic acid was increased. From the results, it may be concluded that the above photosensi tive polymers were dissociated to indene carboxylic acid soluble in aqueous alkali solution. Further, the effect of sensitizers were examined by the variation of intensity in infrared absorption spectra of sensitized and unsensitized samples.

Polyglyceryl phthalate, bisphenol A-epichlorohydrin 縮重合物 및 polyvinyl alcohol의 naphthoquinone-1,2-diazide-5-sulfonyl esters(PGND, BEND 및 PVAND)에 대해 未增感 및 增感한 경우의 IR 스펙트럼을 측정하여 그들의 光分解機構를 硏究하였다. o-quinonediazide에 기인하는 C=N= 및 C=0의 흡수가 露光에 의해 減少내지는 消失하고있었고 또한 indene carboxylic acid의 C=0 흡수강도가 증가되고 있는 것으로 보아 o-quinonediazide group 이 光에 依하여 分解하여 알카리 수용액에 가용성인 indene carboxylic acid로 분해되는 것으로 추정된다. 한편, 露光時間에 대한 增感 및 未增感試料의 吸收强度의 變化를 측정하므로서 增感劑의 增感效果도 아울러 검토하였다.

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