• Title/Summary/Keyword: Organic Solvent-based Rhodamine 6G

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A study on Enhancement Effectiveness of Cyanoacrylate Fumed Fingermark by the Solvent of Rhodamine 6G (Rhodamine 6G 용매에 따른 CA 훈증 지문 증강 효과에 관한 연구)

  • Shim, Yea-Ra;Yu, Je-Seol
    • The Journal of the Korea Contents Association
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    • v.17 no.7
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    • pp.294-302
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    • 2017
  • In this study, latent fingermarks deposited in porous or non-porous surface was developed by cyanoacrylate fuming, and then the developed fingermark is enhanced by using Rhodamine 6G. Between water-based R6G and organic solvent-based R6G, author studied about which material have higher effectiveness in enhancing fingermark. In all seven types of surfaces depositing fingermark, water-based R6G have higher effectiveness in enhancing fingermark and lower surface coloring than organic solvent-based R6G. But because the surfaces found in crime scene have multicolor background and various quality, the additional study about various surfaces is needed.

Efficient Cycloaddition Reaction of Carbon Dioxide with Epoxide by Rhodamine Based Catalyst Under 1 atm Pressure

  • Gong, Qing;Luo, Huadong;Cao, Di;Zhang, Haibo;Wang, Wenjing;Zhou, Xiaohai
    • Bulletin of the Korean Chemical Society
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    • v.33 no.6
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    • pp.1945-1948
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    • 2012
  • Rhodamine B (RhB) and rhodamine 6G (Rh6G) were employed as catalysts for the synthesis of cyclic carbonate from carbon dioxide and epoxide. It turned out that the catalytic activity of Rh6G was nearly 29 times higher than that of RhB at 1 atm pressure, $90^{\circ}C$. Furthermore, the catalytic efficiency of RhB and Rh6G was greatly enhanced with triethylamine as co-catalyst. Under the optimized conditions, the best isolated yield (93%) of cyclic carbonate was achieved without organic solvent and metal component.