광변색성 Spiroxazine 색소의 흡수스펙트럼

Electronic Absorption Spectrum of Photochromic Spironaphthoxazine Dye

  • 김성훈 (경북대학교 공과대학 염색공학과) ;
  • 이순남 (경북대학교 공과대학 염색공학과) ;
  • 임용진 (경북대학교 공과대학 염색공학과)
  • Kim Sung Hoon (Department of Dyeing and Finishing, College of Engineering, Kyungpook National University) ;
  • Lee Soon Nam (Department of Dyeing and Finishing, College of Engineering, Kyungpook National University) ;
  • Lim Yong Jin (Department of Dyeing and Finishing, College of Engineering, Kyungpook National University)
  • 발행 : 1993.05.20

초록

Photochromism을 나타내는 spiroxazine 색소의 흡수스펙트라 및 용매 효과에 관해 검토하였다. 그 결과 positive solvatochromism을 나타내었으며 이로부터 spiro 고리가 자외선 조사에 의해 개열되었을 때는 keto 형의 분자구조로 되어있음을 나타낸다는 것을 알 수 있었다. 색소골격내에 C 대신 N 원자가 존재하므로서 흡수극대치가 장파장측에 이동한다는 것을 ppp 분자궤도법(Pariser-Parr-Pople Molecular Orbital Method)을 사용해 정량적으로 해석하였다.

Absorption spectra of photochromic spironaphthoxazine dye in various solvents were examined and exhibited a positive solvatochromism. The positive solvatochromism of this dye strongly suggests that the structure of open chain forms is keto type structure, 4a. The effect of structural change on the electronic spectra, on replacement of the C=C bond by C=N bond, is discussed.

키워드

참고문헌

  1. Photochromism G. H. Brown(ed.)
  2. Can. J. Chem. v.61 N. Y. Chu
  3. J. Soc. Dyers and Colorists v.96 Y. Kogo;H. Kikuchi;M. Matsuoka;T. Kitao
  4. Solvents and Solvent Effects in Organic Chemistry Reichardt. C.
  5. Japan pat. 61-283982
  6. Color and Constitution of Organic Molecule Griffiths, J.