Chen Hongxia, Lee Jaebeom, Cho Chae-Ryong, Kim Sung-Hoon, Kim Jae-Ho, Koh Kwangnak
College of Nanoscience and Nanotechnology, Pusan National University, Pusan 609-735, Korea.
J Nanosci Nanotechnol. 2009 Dec;9(12):7195-8. doi: 10.1166/jnn.2009.1611.
Spiroxazines are a class of photochromic compounds whose molecular structures are alterable upon exposure to UV/visible light. The typical reaction of spiroxazines is the conversion between the non-polar ring-closure form and polar ring-open form. In this work, copolymer of 1,6-heptadiyne derivatives containing a spiroxazine was used as photochromic material. Precise photochromic properties of the copolymer's thin-film were evaluated through measuring dielectric constant, optical constant and thickness by surface plasmon resonance (SPR) with multi-solvent approach. The change in structure under UV-light irradiation is accompanied by increase of dielectric constant. However, dielectric constant and UV-induced thickness change of the photochromic polymer thin-film are independent of film thickness.
螺恶嗪是一类光致变色化合物，其分子结构在暴露于紫外/可见光时会发生改变。螺恶嗪的典型反应是在非极性闭环形式和极性开环形式之间的转变。在这项工作中，含有螺恶嗪的1,6-庚二炔衍生物的共聚物被用作光致变色材料。通过采用多溶剂方法的表面等离子体共振（SPR）测量介电常数、光学常数和厚度，对共聚物薄膜的精确光致变色性能进行了评估。紫外光照射下结构的变化伴随着介电常数的增加。然而，光致变色聚合物薄膜的介电常数和紫外诱导的厚度变化与薄膜厚度无关。
