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Crystalline Behavior and Structure of a Liquid Crystal Compound, 5-{[4 '-(((Pentyl)oxy)-4-biphenylyl)carbonyl]oxy}-1-pentyne
Liu Leijing1; Li Gao2; Zhou Enie2; Lam, Jacky Wing Yip3; Tang Benzhong3
2011-04-01
Source PublicationCHINESE JOURNAL OF CHEMISTRY
ISSN1001-604X
Volume29Issue:4Pages:631-638
AbstractSingle crystals of two liquid crystal compounds, 5-{[4'-(((pentyl)oxy)-4-biphenylyl)carbonyl]oxy}-1-pentyne (A3EO5) and 5-{[(4'-nonyloxy-4-biphenylyl)carbonyl]oxy}-1-pentyne (A3EO9), have been prepared by solution growth technique. The morphologies and structures of A3EO5 and A3EO9 crystals were investigated by wide angle X-ray diffraction (WXRD), atom force microscope (AFM) and transmission electron microscope (TEM). In contrast to the same series of compounds which have a longer alkyl tail, 5-{[(4'-heptoxy-4-biphenylyl)carbonyl]oxy}-1-pentyne (A3EO7), 5-{[(4'-heptoxy-4-biphenylyl) oxy] carbonyl}-1-pentyne (A3E'O7) and A3EO9, A3EO5 shows strikingly different crystalline behavior. The former three compounds have only one crystal form, whereas A3EO5 exhibits polymorphism. Specifically, A3EO5 crystals grown from toluene solution show two crystal forms. The first one is crystal I which adopts a monoclinic P112/m space group with unit cell parameters of a-5.79 angstrom, b=8.34 angstrom, c=43.92 angstrom, gamma=96 degrees, and the other one is crystal II which adopts a monoclinic P112 space group with unit cell parameters of a=5.55 angstrom, b=7.38 angstrom, c=31.75 angstrom, gamma=94 degrees. When using dioxane as the solvent to grow A3EO5 crystal, we can selectively obtain crystal I. A3EO5 melt-grown crystals also have two crystal forms which derive from crystal I and crystal II, respectively. The different crystalline behavior of the compounds should correlate with their different electron dipole moment resulting from the different length of alkyl tail.
KeywordCrystal Growth Crystal Morphology Crystal Structure Electron Diffraction Single Crystal
DOI10.1002/cjoc.201190133
Indexed BySCI
Language英语
WOS IDWOS:000289938000004
PublisherWILEY-BLACKWELL
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/72864
Collection中国科学院化学研究所
Corresponding AuthorLiu Leijing
Affiliation1.Jilin Univ, State Key Lab Supramol Struct & Mat, Changchun 130012, Jilin, Peoples R China
2.Chinese Acad Sci, Grad Sch, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Jilin, Peoples R China
3.Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China
Recommended Citation
GB/T 7714
Liu Leijing,Li Gao,Zhou Enie,et al. Crystalline Behavior and Structure of a Liquid Crystal Compound, 5-{[4 '-(((Pentyl)oxy)-4-biphenylyl)carbonyl]oxy}-1-pentyne[J]. CHINESE JOURNAL OF CHEMISTRY,2011,29(4):631-638.
APA Liu Leijing,Li Gao,Zhou Enie,Lam, Jacky Wing Yip,&Tang Benzhong.(2011).Crystalline Behavior and Structure of a Liquid Crystal Compound, 5-{[4 '-(((Pentyl)oxy)-4-biphenylyl)carbonyl]oxy}-1-pentyne.CHINESE JOURNAL OF CHEMISTRY,29(4),631-638.
MLA Liu Leijing,et al."Crystalline Behavior and Structure of a Liquid Crystal Compound, 5-{[4 '-(((Pentyl)oxy)-4-biphenylyl)carbonyl]oxy}-1-pentyne".CHINESE JOURNAL OF CHEMISTRY 29.4(2011):631-638.
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