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

Citation: JIA Hong-Jing FAN Cong-Bin, PU Shou-Zhi. Crystal Structure and Photochromic Properties of [1-(2-Methyl-5-(4-cyanophenyl)-3-thienyl)]-2-(2-methyl-5-phenyl-3-thienyl)perfluorocyclopentene[J]. Chinese Journal of Structural Chemistry, 2015, 34(2): 208-214. doi: 10.14102/j.cnki.0254-5861.2011-0472 shu

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

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Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science & Technology Normal University, Nanchang 330013, China
基金项目:
Supported by the National Natural Science Foundation of China (51373072, 21363009) (51373072, 21363009)

the Project of Natural Science Foundation of Jiangxi Province (20142BAB203005) (20142BAB203005)

the Project of Science Funds of Jiangxi Education Office (KJLD12035, GJJ13577) (KJLD12035, GJJ13577)

摘要: 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)Å³, D_c=1.445 mg/m³, 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.

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沈阳化工大学材料科学与工程学院沈阳 110142