Citation: Amar H.Al-Dujaili, Iman F.Mustafa, Amir T.Atto. THE EFFECT OF SUBSTITUENT ON THE THERMAL PROPERTIES OF POLYESTERS CONSISTING OF AROMATIC TYPE SCHIFF BASE MESOGENIC UNITS AND POLYMETHYLENE SPACERS[J]. Chinese Journal of Polymer Science, ;1995, 13(1): 51-58. shu

THE EFFECT OF SUBSTITUENT ON THE THERMAL PROPERTIES OF POLYESTERS CONSISTING OF AROMATIC TYPE SCHIFF BASE MESOGENIC UNITS AND POLYMETHYLENE SPACERS

Received Date: 2 November 1993

Polyesters consisting of substituted aromatic type Schiff base mesogenic unit andpolymethylene spacers were synthesized and their thermal transitions and liquid crystallineproperties were studied. The liquid crystalline behaviour has been characterized by differentialscanning calorimetry (DSC) and optical polarizing microscopy. Structural broadening bysubstitution of methoxy group in 2, 2" positions of the mesogenic core produce polymers withlower transition temperatures. Polymers synthesized from ortho and meta substituted phenylene diamine did not form a liquid crystal phase.
1. [1]
  Tao Yu , Vadim A. Soloshonok , Zhekai Xiao , Hong Liu , Jiang Wang . Probing the dynamic thermodynamic resolution and biological activity of Cu(Ⅱ) and Pd(Ⅱ) complexes with Schiff base ligand derived from proline. Chinese Chemical Letters, 2024, 35(4): 108901-. doi: 10.1016/j.cclet.2023.108901
2. [2]
  Maitri Bhattacharjee , Rekha Boruah Smriti , R. N. Dutta Purkayastha , Waldemar Maniukiewicz , Shubhamoy Chowdhury , Debasish Maiti , Tamanna Akhtar . Synthesis, structural characterization, bio-activity, and density functional theory calculation on Cu(Ⅱ) complexes with hydrazone-based Schiff base ligands. Chinese Journal of Inorganic Chemistry, 2024, 40(7): 1409-1422. doi: 10.11862/CJIC.20240007
3. [3]
  Tingting Huang , Zhuanlong Ding , Hao Liu , Ping-An Chen , Longfeng Zhao , Yuanyuan Hu , Yifan Yao , Kun Yang , Zebing Zeng . Electron-transporting boron-doped polycyclic aromatic hydrocarbons: Facile synthesis and heteroatom doping positions-modulated optoelectronic properties. Chinese Chemical Letters, 2024, 35(4): 109117-. doi: 10.1016/j.cclet.2023.109117
4. [4]
  Wen-Hui Mi , Teng-Yu Huang , Yu-Fei Ao , Xu-Dong Wang , Qi-Qiang Wang , De-Xian Wang . Ultracycles consisting of macrocycles. Chinese Chemical Letters, 2024, 35(5): 109077-. doi: 10.1016/j.cclet.2023.109077
5. [5]
  Zhengzheng LIU , Pengyun ZHANG , Chengri WANG , Shengli HUANG , Guoyu YANG . Synthesis, structure, and electrochemical properties of a sandwich-type {Co₆}-cluster-added germanotungstate. Chinese Journal of Inorganic Chemistry, 2024, 40(6): 1173-1179. doi: 10.11862/CJIC.20240039
6. [6]
  Bo Yu , Pengchen Du , Jianwen Guo , Hanshen Xin , Jianhua Zhang . Nonalternant isomer of pentacene fusing two azulene units. Chinese Chemical Letters, 2024, 35(5): 109321-. doi: 10.1016/j.cclet.2023.109321
7. [7]
  Juan Guo , Mingyuan Fang , Qingsong Liu , Xiao Ren , Yongqiang Qiao , Mingju Chao , Erjun Liang , Qilong Gao . Zero thermal expansion in Cs₂W₃O₁₀. Chinese Chemical Letters, 2024, 35(7): 108957-. doi: 10.1016/j.cclet.2023.108957
8. [8]
  Yuanjiao Liu , Xiaoyang Zhao , Songyao Zhang , Yi Wang , Yutuo Zheng , Xinrui Miao , Wenli Deng . Site-selection and recognition of aromatic carboxylic acid in response to coronene and pyridine derivative. Chinese Chemical Letters, 2024, 35(8): 109404-. doi: 10.1016/j.cclet.2023.109404
9. [9]
  Ming Huang , Xiuju Cai , Yan Liu , Zhuofeng Ke . Base-controlled NHC-Ru-catalyzed transfer hydrogenation and α-methylation/transfer hydrogenation of ketones using methanol. Chinese Chemical Letters, 2024, 35(7): 109323-. doi: 10.1016/j.cclet.2023.109323
10. [10]
  Hong Zhang , Cui-Ping Li , Li-Li Wang , Zhuo-Da Zhou , Wen-Sen Li , Ling-Yi Kong , Ming-Hua Yang . Asperochones A and B, two antimicrobial aromatic polyketides from the endophytic fungus Aspergillus sp. MMC-2. Chinese Chemical Letters, 2024, 35(9): 109351-. doi: 10.1016/j.cclet.2023.109351
11. [11]
  Liangji Chen , Zhen Yuan , Fudong Feng , Xin Zhou , Zhile Xiong , Wuji Wei , Hao Zhang , Banglin Chen , Shengchang Xiang , Zhangjing Zhang . A hydrogen-bonded organic framework containing fluorescent carbazole and responsive pyridyl units for sensing organic acids. Chinese Chemical Letters, 2024, 35(9): 109344-. doi: 10.1016/j.cclet.2023.109344
12. [12]
  Jiajing Wu , Ru-Ling Tang , Sheng-Ping Guo . Three types of promising functional building units for designing metal halide nonlinear optical crystals. Chinese Journal of Structural Chemistry, 2024, 43(6): 100291-100291. doi: 10.1016/j.cjsc.2024.100291
13. [13]
  Ruizhi Yang , Xia Li , Weiping Guo , Zixuan Chen , Hongwei Ming , Zhong-Zhen Luo , Zhigang Zou . New thermoelectric semiconductors Pb5Sb12+xBi6-xSe32 with ultralow thermal conductivity. Chinese Journal of Structural Chemistry, 2024, 43(3): 100268-100268. doi: 10.1016/j.cjsc.2024.100268
14. [14]
  Chaozheng He , Pei Shi , Donglin Pang , Zhanying Zhang , Long Lin , Yingchun Ding . First-principles study of the relationship between the formation of single atom catalysts and lattice thermal conductivity. Chinese Chemical Letters, 2024, 35(6): 109116-. doi: 10.1016/j.cclet.2023.109116
15. [15]
  Fenglin Jiang , Anan Liu , Qian Wei , Youcai Hu . Editing function of type Ⅱ thioesterases in the biosynthesis of fungal polyketides. Chinese Chemical Letters, 2024, 35(10): 109504-. doi: 10.1016/j.cclet.2024.109504
16. [16]
  Yi Herng Chan , Zhe Phak Chan , Serene Sow Mun Lock , Chung Loong Yiin , Shin Ying Foong , Mee Kee Wong , Muhammad Anwar Ishak , Ven Chian Quek , Shengbo Ge , Su Shiung Lam . Thermal pyrolysis conversion of methane to hydrogen (H₂): A review on process parameters, reaction kinetics and techno-economic analysis. Chinese Chemical Letters, 2024, 35(8): 109329-. doi: 10.1016/j.cclet.2023.109329
17. [17]
  Rongliang Deng , Yihang Chen , Xiaotong Fan , Guolong Chen , Shuli Wang , Changzhi Yu , Xiao Yang , Tingzhu Wu , Zhong Chen , Yue Lin . Break of thermal equilibrium between optical and acoustic phonon branches of CsPbI₃ under continuous-wave light excitation and cryogenic temperature. Chinese Chemical Letters, 2024, 35(7): 109346-. doi: 10.1016/j.cclet.2023.109346
18. [18]
  Fanxin Kong , Hongzhi Wang , Huimei Duan . Inhibition effect of sulfation on Pt/TiO2 catalysts in methane combustion. Chinese Journal of Structural Chemistry, 2024, 43(5): 100287-100287. doi: 10.1016/j.cjsc.2024.100287
19. [19]
  Min Fu , Pan He , Sen Zhou , Wenqiang Liu , Bo Ma , Shiying Shang , Yaohao Li , Ruihan Wang , Zhongping Tan . An unexpected stereochemical effect of thio-substituted Asp in native chemical ligation. Chinese Chemical Letters, 2024, 35(8): 109434-. doi: 10.1016/j.cclet.2023.109434
20. [20]
  Yixia Zhang , Caili Xue , Yunpeng Zhang , Qi Zhang , Kai Zhang , Yulin Liu , Zhaohui Shan , Wu Qiu , Gang Chen , Na Li , Hulin Zhang , Jiang Zhao , Da-Peng Yang . Cocktail effect of ionic patch driven by triboelectric nanogenerator for diabetic wound healing. Chinese Chemical Letters, 2024, 35(8): 109196-. doi: 10.1016/j.cclet.2023.109196

Get Citation

PDF

XML

Metrics

PDF Downloads(0)
Abstract views(402)
HTML views(2)

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