ICCAS OpenIR
Synthesis and characterization of a hydrogen-bonded nematic network based on 4-propoxybenzoic acid side groups grafted onto a polysiloxane
Xu, H; Kang, N; Xie, P; Zhang, RB; Xu, DF
2000-02-01
Source PublicationLIQUID CRYSTALS
ISSN0267-8292
Volume27Issue:2Pages:169-176
AbstractA polymethylsiloxane with 4-propoxybenzoic acid side groups was prepared by hydrosilylation of polymethylhydrosiloxane and methyl 4-allyloxybenzoate followed by hydrolysis. The existence of strong hydrogen bonding interactions in this polymer due to dimerization of the carboxylic acid groups was demonstrated by FTIR. The polymer exhibits a nematic mesophase at elevated temperatures due to the self-assembly of hydrogen-bonded mesogens (dimers). After cooling from its nematic melt, a stable hydrogen-bonded nematic network structure was formed, as demonstrated by differential scanning calorimetry, polarizing optical microscopy, and X-ray diffraction. Temperature-variable FTIR analysis presents a convincing interpretation for the DSC thermogram of the polymer, and furthermore assists in understanding the process of formation of the nematic network and the reversibility of such hydrogen-bonded networks.
Indexed BySCI
Language英语
WOS IDWOS:000085154600003
PublisherTAYLOR & FRANCIS LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/76394
Collection中国科学院化学研究所
Corresponding AuthorZhang, RB
AffiliationChinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Xu, H,Kang, N,Xie, P,et al. Synthesis and characterization of a hydrogen-bonded nematic network based on 4-propoxybenzoic acid side groups grafted onto a polysiloxane[J]. LIQUID CRYSTALS,2000,27(2):169-176.
APA Xu, H,Kang, N,Xie, P,Zhang, RB,&Xu, DF.(2000).Synthesis and characterization of a hydrogen-bonded nematic network based on 4-propoxybenzoic acid side groups grafted onto a polysiloxane.LIQUID CRYSTALS,27(2),169-176.
MLA Xu, H,et al."Synthesis and characterization of a hydrogen-bonded nematic network based on 4-propoxybenzoic acid side groups grafted onto a polysiloxane".LIQUID CRYSTALS 27.2(2000):169-176.
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