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SYNTHESIS OF LADDER POLYVINYLSILSESQUIOXANE WITH HIGH REGULARITY
Lu Zhaobin1; Lue Yinsheng1; Wan Youzhi1; Xie Ping2; Zhang Rongben2
2009-12-20
Source PublicationACTA POLYMERICA SINICA
ISSN1000-3304
Issue12Pages:1287-1291
AbstractThe ladder polyvinylsilsesquioxane (Vi-LPSQ) with high regularity was successfully synthesized via supramolecular architecture-directed stepwise coupling and polymerization: "synchronous growth polymerization, synchronous bridge-cleaving followed by in situ condensation". Formation with branches or cross-linking is unavoidable if the effective template is absent. Here, it is necessaryly emphasized that ladder superstructure (Vi-LS) and hydrogen-bonding adduct (HBA) are two imperative supramolecular architectures determining the ladder regularity of Vi-LPSQ. The ladder-rung, diaminophenylenes, can self-assemble into real ladder superstructures (Vi-LS) as template by pi-interaction-aided N-H's hydrogen-bonding. And when converting the real Vi-DLPS to the desired Vi-LPSQ, oxalyl chloride can initially form a stable hydrogen-bonded adduct ( HBA) with the diaminophenylenes-bridge of Vi-DLPS by a synergy of hydrogen bonding between carbonyl and amino groups and d pi-p pi interaction of p-electrons of Cl-atom and d-orbital of Si-atom. As a result, the reactive Vi-LPSQ is obtained based-on this supramolecular architectures-directed approach. The ladder regularities for either the Vi-DLPS or Vi-LPSQ are confirmed by the strong diffraction peaks at small angle range of XRD patterns. Especially, (29)Si-NMR measurement gives the sharp peak with extremely narrow baseline-width, Delta ca. 1, of the repeat moieties: Vi-Si (O(2/2))-NH-Ph-NH-Si(O(2/2))-Vi and Vi-Si(O(2/2))-O-Si(O(2/2))-Vi. Moreover, The target polymer Vi-LPSQ is a premising precursor for preparation of number of advanced functional materials due to a possibility of functionalization for the reactive vinyl group.
KeywordPrecouple Self-assembly Ladder Superstructure Stepwise Coupling And Polymerization
Indexed BySCI
Language英语
WOS IDWOS:000273214300017
PublisherSCIENCE PRESS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/67450
Collection中国科学院化学研究所
Corresponding AuthorLu Zhaobin
Affiliation1.Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Chem, BNLMS, Joint Lab Polymer Sci & Mat, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Lu Zhaobin,Lue Yinsheng,Wan Youzhi,et al. SYNTHESIS OF LADDER POLYVINYLSILSESQUIOXANE WITH HIGH REGULARITY[J]. ACTA POLYMERICA SINICA,2009(12):1287-1291.
APA Lu Zhaobin,Lue Yinsheng,Wan Youzhi,Xie Ping,&Zhang Rongben.(2009).SYNTHESIS OF LADDER POLYVINYLSILSESQUIOXANE WITH HIGH REGULARITY.ACTA POLYMERICA SINICA(12),1287-1291.
MLA Lu Zhaobin,et al."SYNTHESIS OF LADDER POLYVINYLSILSESQUIOXANE WITH HIGH REGULARITY".ACTA POLYMERICA SINICA .12(2009):1287-1291.
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