Crystal Structure and Photochromic Properties of [1-(2-Methyl-5-(4-cyanophenyl)-3-thienyl)]-2-(2-met

• 作 者: 贾鸿晶 范丛斌 蒲守智
• 机 构: Jiangxi Key Laboratory of Organic Chemistry,Jiangxi Science & Technology Normal University,
• 出 处: 结构化学
• 发表日期: 2015年02期
• 关键词: reversible crystalline hexane belongs monoclinic isomers benzene irradiation thi

A new photochromic diarylethene, [1-(2-methyl-5-(4-cyanophenyl)-3-thienyl-2-(2-methyl-5-phenyl-3-thienyl)]perfluorocyclopentene(1o, C28H17F6NS2), was synthesized and its structure was determined by single-crystal X-ray diffraction analysis. Its crystal belongs to the monoclinic system, space group P21/c with a = 24.1381(5), b = 9.3834(6), c = 11.1073(8), β = 94.477(4)°, Z = 4, V = 2508.1(3) A3, D3 c = 1.445 mg/m, μ = 0.275, F(000) = 1112, the final R = 0.0482 and wR = 0.1429 for 5834 observed reflections(I > 2σ(I)). Further study demonstrated the diarylethene underwent reversible photochromism, changing between colorless and blue in hexane solution, crystalline phase and PMMA films, respectively.

A new photochromic diarylethene, [1- (2-methyl-5- (4-cyanophenyl) -3-thienyl-2- (2-methyl-5- phenyl-3-thienyl)] perfluorocyclopentene (1o, C28H17F6NS2) Its structure belongs to the monoclinic system, space group P21 / c with a = 24.1381 (5), b = 9.3834 (6), c = 11.1073 β = 94.477 (4) °, Z = 4, V = 2508.1 A3, D3 c = 1.445 mg / m, μ = 0.275, F (000) = 1112, the final R = 0.0482 and wR = 0.1429 for 5834 observed reflections (I> 2σ (I)). Further study demonstrated the diarylethene underwent reversible photochromism, changing between colorless and blue in hexane solution, crystalline phase and PMMA films, respectively.