Citation: . CRYSTALLINE MORPHOLOGY IN A SERIES OF CH3-SUBSTITUTED THERMOTROPIC AROMATIC POLYESTERS WITH EVEN AND ODD FLEXIBLE SPACERS*[J]. Chinese Journal of Polymer Science, ;2001, 19(1): 71-78. shu

CRYSTALLINE MORPHOLOGY IN A SERIES OF CH3-SUBSTITUTED THERMOTROPIC AROMATIC POLYESTERS WITH EVEN AND ODD FLEXIBLE SPACERS*

Received Date: 28 April 2000

Crystalline morphology in a series of CH3-substituted main chain thermotropic aromatic polyesters with even and odd numbered methylene spacers has been studied by polarizing optical microscopy (POM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). On crystallization from solution evaporation spherulites of radial structure were observed in the polymers with even numbered spacers, but spherulites with concentric rings form in the polymer with odd numbered spacers. Both spherulites have a lamellar structure, which is about 10 nm in thickness. On crystallization from nematic glassy state spherulites can not be grown; lamellar structure was only observed around disclinations in a specimen during crystallization. In the case of crystallization from nematic melt two types of spherulites can be observed for the sample with even numbered spacers. For the sample with odd numbered spacers spherulites can not be formed, but only irregular crystallites.
1. [1]
  Hong-Jin Liao , Zhu Zhuo , Qing Li , Yoshihito Shiota , Jonathan P. Hill , Katsuhiko Ariga , Zi-Xiu Lu , Lu-Yao Liu , Zi-Ang Nan , Wei Wang , You-Gui Huang . A new class of crystalline X-ray induced photochromic materials assembled from anion-directed folding of a flexible cation. Chinese Chemical Letters, 2024, 35(8): 109052-. doi: 10.1016/j.cclet.2023.109052
2. [2]
  Jun Guo , Zhenbang Zhuang , Wanqiang Liu , Gang Huang . "Co-coordination force" assisted rigid-flexible coupling crystalline polymer for high-performance aqueous zinc-organic batteries. Chinese Chemical Letters, 2024, 35(9): 109803-. doi: 10.1016/j.cclet.2024.109803
3. [3]
  Kai Han , Guohui Dong , Ishaaq Saeed , Tingting Dong , Chenyang Xiao . Morphology and photocatalytic tetracycline degradation of g-C3N4 optimized by the coal gangue. Chinese Journal of Structural Chemistry, 2024, 43(2): 100208-100208. doi: 10.1016/j.cjsc.2023.100208
4. [4]
  Shiyi WANG , Chaolong CHEN , Xiangjian KONG , Lansun ZHENG , Lasheng LONG . Polynuclear lanthanide compound [Ce₄^ⅢCe₆^Ⅳ(μ₃-O)₄(μ₄-O)₄(acac)₁₄(CH₃O)₆]·2CH₃OH for the hydroboration of amides to amine. Chinese Journal of Inorganic Chemistry, 2025, 41(1): 88-96. doi: 10.11862/CJIC.20240342
5. [5]
  Yu Hong , Yuqian Jiang , Chenhuan Yuan , Decai Wang , Yimeng Sun , Jian Jiang . Unraveling temperature-dependent supramolecular polymorphism of naphthalimide-substituted benzene-1,3,5-tricarboxamide derivatives. Chinese Chemical Letters, 2024, 35(12): 109909-. doi: 10.1016/j.cclet.2024.109909
6. [6]
  Husitu Lin , Shuangkun Zhang , Dianfa Zhao , Yongkang Wang , Wei Liu , Fan Yang , Jianjun Liu , Dongpeng Yan , Zhanpeng Wu . Flexible polyphosphazene nanocomposite films: Enhancing stability and luminescence of CsPbBr₃ perovskite nanocrystals. Chinese Chemical Letters, 2025, 36(4): 109795-. doi: 10.1016/j.cclet.2024.109795
7. [7]
  Xiuzheng Deng , Changhai Liu , Xiaotong Yan , Jingshan Fan , Qian Liang , Zhongyu Li . Carbon dots anchored NiAl-LDH@In₂O₃ hierarchical nanotubes for promoting selective CO₂ photoreduction into CH₄. Chinese Chemical Letters, 2024, 35(6): 108942-. doi: 10.1016/j.cclet.2023.108942
8. [8]
  Junjun Huang , Ran Chen , Yajian Huang , Hang Zhang , Anran Zheng , Qing Xiao , Dan Wu , Ruxia Duan , Zhi Zhou , Fei He , Wei Yi . Discovery of an enantiopure N-[2-hydroxy-3-phenyl piperazine propyl]-aromatic carboxamide derivative as highly selective α_1D/1A-adrenoceptor antagonist and homology modelling. Chinese Chemical Letters, 2024, 35(11): 109594-. doi: 10.1016/j.cclet.2024.109594
9. [9]
  Han Yuan , Fengcai Zhang , Hongzhe Huang , Jiafei Wu , Yi Yang , Wanyi Huang , Dongjing Yang , Zhuoming Li , Zhe Li , Ling Huang , Yi-You Huang , Hai-Bin Luo , Lei Guo . Discovery of 3-trifluoromethyl-substituted pyrazoles as selective phosphodiesterase 10A inhibitors for orally attenuating isoprenaline-induced cardiac hypertrophy. Chinese Chemical Letters, 2025, 36(4): 109965-. doi: 10.1016/j.cclet.2024.109965
10. [10]
  Huanyan Liu , Jiajun Long , Hua Yu , Shichao Zhang , Wenbo Liu . Rational design of highly conductive and stable 3D flexible composite current collector for high performance lithium-ion battery electrodes. Chinese Chemical Letters, 2025, 36(3): 109712-. doi: 10.1016/j.cclet.2024.109712
11. [11]
  Ke-Ai Zhou , Lian Huang , Xing-Ping Fu , Li-Ling Zhang , Yu-Ling Wang , Qing-Yan Liu . Fluorinated metal-organic framework for methane purification from a ternary CH4/C2H6/C3H8 mixture. Chinese Journal of Structural Chemistry, 2023, 42(11): 100172-100172. doi: 10.1016/j.cjsc.2023.100172
12. [12]
  Ao Sun , Zipeng Li , Shuchun Li , Xiangbao Meng , Zhongtang Li , Zhongjun Li . Stereoselective synthesis of α-3-deoxy-D-manno-oct-2-ulosonic acid (α-Kdo) derivatives using a C3-p-tolylthio-substituted Kdo fluoride donor. Chinese Chemical Letters, 2025, 36(3): 109972-. doi: 10.1016/j.cclet.2024.109972
13. [13]
  Guixu Pan , Zhiling Xia , Ning Wang , Hejia Sun , Zhaoqi Guo , Yunfeng Li , Xin Li . Preparation of high-efficient donor-π-acceptor system with crystalline g-C3N4 as charge transfer module for enhanced photocatalytic hydrogen evolution. Chinese Journal of Structural Chemistry, 2024, 43(12): 100463-100463. doi: 10.1016/j.cjsc.2024.100463
14. [14]
  Zhongjie Li , Xiangyue Kong , Yuhao Liu , Huayu Qiu , Lingling Zhan , Shouchun Yin . Progress of additives for morphology control in organic photovoltaics. Chinese Chemical Letters, 2024, 35(6): 109378-. doi: 10.1016/j.cclet.2023.109378
15. [15]
  Hongmei Yu , Baoxi Zhang , Meiju Liu , Cheng Xing , Guorong He , Li Zhang , Ningbo Gong , Yang Lu , Guanhua Du . Theoretical and experimental cocrystal screening of temozolomide with a series of phenolic acids, promising cocrystal coformers. Chinese Chemical Letters, 2024, 35(5): 109032-. doi: 10.1016/j.cclet.2023.109032
16. [16]
  Yu Deng , Yan Liu , Yonghui Deng , Jinsheng Cheng , Yidong Zou , Wei Luo . In situ sulfur-doped mesoporous tungsten oxides for gas sensing toward benzene series. Chinese Chemical Letters, 2024, 35(7): 108898-. doi: 10.1016/j.cclet.2023.108898
17. [17]
  Jiqing Liu , Qi Dang , Liting Wang , Dejin Wang , Liang Tang . Applications of flexible electrochemical electrodes in wastewater treatment: A review. Chinese Chemical Letters, 2024, 35(8): 109277-. doi: 10.1016/j.cclet.2023.109277
18. [18]
  Lixian Cai , Yingxiang Ye . A flexible-robust MOF for efficient purification of perfluoropropane. Chinese Journal of Structural Chemistry, 2024, 43(11): 100368-100368. doi: 10.1016/j.cjsc.2024.100368
19. [19]
  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
20. [20]
  Xin Lu , Haoran Sun , Xiaomeng Li , Chunrui Li , Jinfeng Wang , Dandan Zhou . C14-HSL limits the mycelial morphology of pathogen Trichosporon cells but enhances their aggregation: Mechanisms and implications. Chinese Chemical Letters, 2024, 35(6): 108936-. doi: 10.1016/j.cclet.2023.108936

Get Citation

PDF

XML

Metrics

PDF Downloads(0)
Abstract views(607)
HTML views(9)

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