• Title/Summary/Keyword: RYU

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Reduction of functionally graded material (FGM) layers for joining dissimilar ceramics in Si3N4-Al2O3 system using polytypoid functional gradients (폴리타이포이드 기능경사를 이용한 Si3N4-Al2O3 계 이종 세라믹 간 접합을 위한 기능경사재료(FGM) 적층의 저감)

  • Ryu, Sae-Hui;Park, Jong-Ha;Lee, Seon-Yeong;Lee, Jae-Cheol;An, Seong-Hun;Hong, Hyeon-Jeong;Ryu, Do-Hyeong
    • Proceedings of the Materials Research Society of Korea Conference
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    • 2007.11a
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    • pp.117.1-117.1
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    • 2007

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A Study on the Mechanism for Photochemical Insertion of Methanol Into Aryl Ketocarbenes

  • Sung, Dae-Dong;Lee, Jong-Pal;Lee, Yong-Hee;Ryu, Worl-Sun;Ryu, Zoon-Ha
    • Journal of Photoscience
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    • v.7 no.1
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    • pp.15-19
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    • 2000

  • The photochemical reaction mechanism has been investigated for methanol insertion into the p-substituted phenylketo carbenes. The triplet spin state of phenyl koto carbene is stabilized by the neighbored carbonyl electrons. When the phenylketo carbene reacts with methanol, the ylied intermediate is formed, then moves to the activated transition state.

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