title: Surface plasmon resonance investigation of a copolymer containing spiroxazine.
abstract: 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.
authors.affiliation: College of Nanoscience and Nanotechnology, Pusan National University, Pusan 609-735, Korea.
authors.forename: Hongxia
authors.initials: H
authors.lastname: Chen
authors.forename: Jaebeom
authors.initials: J
authors.lastname: Lee
authors.forename: Chae-Ryong
authors.initials: CR
authors.lastname: Cho
authors.forename: Sung-Hoon
authors.initials: SH
authors.lastname: Kim
authors.forename: Jae-Ho
authors.initials: JH
authors.lastname: Kim
authors.forename: Kwangnak
authors.initials: K
authors.lastname: Koh
mesh_terms: D008422:Materials Testing / Q000379:methods*; D011108:Polymers / Q000032:analysis* / Q000737:chemistry*; D020349:Surface Plasmon Resonance / Q000379:methods*
chemical_list: D011108:Polymers