Home

Citation: YU Zhen-Qiang, ZHU Cai-Zhen, TIAN Sai, LIU Jian-Hong, LAM Jacky Wing Yip, TANG Ben-Zhong. Phase Transitions and Structures of 5-{[(4’-Pentyloxy-4-biphenylyl)carbonyl]oxy}-1-pentyne[J]. Acta Physico-Chimica Sinica, ;2010, 26(04): 817-821. doi: 10.3866/PKU.WHXB20100405 shu

Phase Transitions and Structures of 5-{[(4’-Pentyloxy-4-biphenylyl)carbonyl]oxy}-1-pentyne

1.
Shenzhen Key Laboratory of Functional Polymer, School of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P. R. China; Department of Chemistry, The Hong Kong University of Science & Technology, Hong Kong, P. R. China

Received Date: 15 October 2009
Available Online: 1 February 2010

Phase transitions and structures of the monomer of side-chain liquid crystalline polyacetylene containing biphenyl mesogen, namely, 5-{[(4'-pentyloxy-4-biphenylyl)carbonyl]oxy}-1-pentyne (A3EO5) were investigated by differential scanning calorimetry (DSC), one dimensional (1D) wide angle X-ray diffraction (WAXD), and polarized light microscopy equipped with hot-stage (PLM-hot stage). DSC and 1D-WAXD results show that A3EO5 forms an enantiotropic liquid crystal and displays four transitions during the cooling and subsequent heating processes. Upon cooling fromisotropic phase to roomtemperature, the sample forms smectic A phase and then leads to smectic B phase with pseudo long-range orientation within the layer structure, further lowering the temperature, A3EO5 forms smectic E phase with orthorhombic packing within the smectic layer and enters crystal phase. PLM results show that the sample forms spherulitic texture, focal conic texture and concentric arcs texture during the cooling process.
- Liquid crystal,
- Phase structure,
- Phase transition,
- X-ray diffraction,
- Smectic phase
1. [1]
  Hongwei Ma , Hui Li . Three Methods for Structure Determination from Powder Diffraction Data. University Chemistry, 2024, 39(3): 94-102. doi: 10.3866/PKU.DXHX202310035
2. [2]
  Gaoyan Chen , Chaoyue Wang , Juanjuan Gao , Junke Wang , Yingxiao Zong , Kin Shing Chan . Heart to Heart: Exploring Cardiac CT. University Chemistry, 2024, 39(9): 146-150. doi: 10.12461/PKU.DXHX202402011
3. [3]
  Xiaowu Zhang , Pai Liu , Qishen Huang , Shufeng Pang , Zhiming Gao , Yunhong Zhang . Acid-Base Dissociation Equilibrium in Multiphase System: Effect of Gas. University Chemistry, 2024, 39(4): 387-394. doi: 10.3866/PKU.DXHX202310021
4. [4]
  Yanhui Zhong , Ran Wang , Zian Lin . Analysis of Halogenated Quinone Compounds in Environmental Water by Dispersive Solid-Phase Extraction with Liquid Chromatography-Triple Quadrupole Mass Spectrometry. University Chemistry, 2024, 39(11): 296-303. doi: 10.12461/PKU.DXHX202402017
5. [5]
  Jiao CHEN , Yi LI , Yi XIE , Dandan DIAO , Qiang XIAO . Vapor-phase transport of MFI nanosheets for the fabrication of ultrathin b-axis oriented zeolite membranes. Chinese Journal of Inorganic Chemistry, 2024, 40(3): 507-514. doi: 10.11862/CJIC.20230403
6. [6]
  Zhiwen HU , Weixia DONG , Qifu BAO , Ping LI . Low-temperature synthesis of tetragonal BaTiO₃ for piezocatalysis. Chinese Journal of Inorganic Chemistry, 2024, 40(5): 857-866. doi: 10.11862/CJIC.20230462
7. [7]
  Haiyang Zhang , Yanzhao Dong , Haojie Li , Ruili Guo , Zhicheng Zhang , Jiangjiexing Wu . Exploring the Integration of Chemical Engineering Principle Experiment with Cutting-Edge Research Achievements. University Chemistry, 2024, 39(10): 308-313. doi: 10.12461/PKU.DXHX202405035
8. [8]
  Wei Li , Guoqiang Feng , Ze Chang . Teaching Reform of X-ray Diffraction Using Synchrotron Radiation in Materials Chemistry. University Chemistry, 2024, 39(3): 29-35. doi: 10.3866/PKU.DXHX202308060
9. [9]
  Zunxiang Zeng , Yuling Hu , Yufei Hu , Hua Xiao . Analysis of Plant Essential Oils by Supercritical CO₂Extraction with Gas Chromatography-Mass Spectrometry: An Instrumental Analysis Comprehensive Experiment Teaching Reform. University Chemistry, 2024, 39(3): 274-282. doi: 10.3866/PKU.DXHX202309069
10. [10]
  Yuqiao Zhou , Weidi Cao , Shunxi Dong , Lili Lin , Xiaohua Liu . Study on the Teaching Reformation of Practical X-ray Crystallography. University Chemistry, 2024, 39(3): 23-28. doi: 10.3866/PKU.DXHX202303003
11. [11]
  Ji Qi , Jianan Zhu , Yanxu Zhang , Jiahao Yang , Chunting Zhang . Visible Color Change of Copper (II) Complexes in Reversible SCSC Transformation: The Effect of Structure on Color. University Chemistry, 2024, 39(3): 43-57. doi: 10.3866/PKU.DXHX202307050
12. [12]
  Yukai Jiang , Yihan Wang , Yunkai Zhang , Yunping Wei , Ying Ma , Na Du . Characterization and Phase Diagram of Surfactant Lyotropic Liquid Crystal. University Chemistry, 2024, 39(4): 114-118. doi: 10.3866/PKU.DXHX202309033
13. [13]
  Hongwei Ma , Fang Zhang , Hui Ai , Niu Zhang , Shaochun Peng , Hui Li . Integrated Crystallographic Teaching with X-ray,TEM and STM. University Chemistry, 2024, 39(3): 5-17. doi: 10.3866/PKU.DXHX202308107
14. [14]
  Yinyin Qian , Rui Xu . Utilizing VESTA Software in the Context of Material Chemistry: Analyzing Twin Crystal Nanostructures in Indium Antimonide. University Chemistry, 2024, 39(3): 103-107. doi: 10.3866/PKU.DXHX202307051
15. [15]
  Liang TANG , Jingfei NI , Kang XIAO , Xiangmei LIU . Synthesis and X-ray imaging application of lanthanide-organic complex-based scintillators. Chinese Journal of Inorganic Chemistry, 2024, 40(10): 1892-1902. doi: 10.11862/CJIC.20240139
16. [16]
  Yan Liu , Yuexiang Zhu , Luhua Lai . Introduction to Blended and Small-Class Teaching in Structural Chemistry: Exploring the Structure and Properties of Crystals. University Chemistry, 2024, 39(3): 1-4. doi: 10.3866/PKU.DXHX202306084
17. [17]
  Qi Wang , Yicong Gao , Feng Lu , Quli Fan . Preparation and Performance Characterization of the Second Near-Infrared Phototheranostic Probe: A New Design and Teaching Practice of Polymer Chemistry Comprehensive Experiment. University Chemistry, 2024, 39(11): 342-349. doi: 10.12461/PKU.DXHX202404141
18. [18]
  Zitong Chen , Zipei Su , Jiangfeng Qian . Aromatic Alkali Metal Reagents: Structures, Properties and Applications. University Chemistry, 2024, 39(8): 149-162. doi: 10.3866/PKU.DXHX202311054
19. [19]
  Keke Han , Wenjun Rao , Xiuli You , Haina Zhang , Xing Ye , Zhenhong Wei , Hu Cai . Two new high-temperature molecular ferroelectrics [1,5-3.2.2-Hdabcni]X (X = ClO₄⁻, ReO₄⁻). Chinese Chemical Letters, 2024, 35(6): 108809-. doi: 10.1016/j.cclet.2023.108809
20. [20]
  Mianying Huang , Zhiguang Xu , Xiaoming Lin . Mechanistic analysis of Co2VO4/X (X = Ni, C) heterostructures as anode materials of lithium-ion batteries. Chinese Journal of Structural Chemistry, 2024, 43(7): 100309-100309. doi: 10.1016/j.cjsc.2023.100309

Get Citation

PDF

XML

Metrics

PDF Downloads(1374)
Abstract views(2909)
HTML views(12)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Address：Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888

DownLoad: Full-Size Img PowerPoint

Return