Journal of the Korean Magnetic Resonance Society (한국자기공명학회논문지)

Korean Magnetic Resonance Society (한국자기공명학회)
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NMR Analysis of the Substitution of Titanium Tetraisopropoxide with Phenol and Carboxylic Acid

  • Choi, Jeong Chul (Department of Bio & Chemical Engineering, Hongik University) ;
  • Hwang, Kwang-Jin (Department of Bio & Chemical Engineering, Hongik University)
  • Received : 2017.08.11
  • Accepted : 2017.11.25
  • Published : 2017.12.20
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Abstract

Titanium phenoxide and titanium carboxylate derivatives were prepared by ligand exchange of titanium tetraisopropoxide with the corresponding phenol and carboxylic acids. The substitution reactions were analyzed by NMR focused in the liberation of isopropylalcohol. The chemical shift of secondary proton of isopropyl group shifted to upfield after liberation; from 4.47 ppm at titanium-bound to 4.1~4.3 ppm at free alcohol state in $CDCl_3$. The substitution reaction of titanium tetraisopropoxide with carboxylic acid was applied to form dye-Ti complex for dye-sensitized solar cell.

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