Please use this identifier to cite or link to this item: https://doi.org/10.1021/jp1080753
Title: Mechanism of dielectric constant variation of POSS-based organic-inorganic molecular hybrids
Authors: Zhang, C.
Guang, S.
Zhu, X.
Xu, H.
Liu, X. 
Jiang, M.
Issue Date: 30-Dec-2010
Citation: Zhang, C., Guang, S., Zhu, X., Xu, H., Liu, X., Jiang, M. (2010-12-30). Mechanism of dielectric constant variation of POSS-based organic-inorganic molecular hybrids. Journal of Physical Chemistry C 114 (51) : 22455-22461. ScholarBank@NUS Repository. https://doi.org/10.1021/jp1080753
Abstract: Three series of POSS containing organic-inorganic molecular hybrid low dielectric materials with different molecular architectures were prepared, in which isobutylstyryl-polyhedral oligomeric silsesquioxane (IBS-POSS) and octavinyl-polyhedral oligomeric silsesquioxane (OV-POSS) were adopted as an inorganic core to construct the pendant-type PAS-POSSpendt and star-type PAS-POSSstar hybrids, respectively. Among the organic-inorganic molecular hybrids, the POSS contents range from 0.65, 1.36, 1.62, to 3.14 in molar percentage (mol %) in PAS-POSSpendt hybrids, and from 0.36, 1.37, 2.06, to 3.72 in molar percentage (mol %) in PAS-POSS star hybrids. Different polar organic components (organic polymeric chains) including PS, PAS, and PMMA were build into the star-type hybrids. The analysis on the relationship between molecular structure of these hybrids and their dielectric constants indicates that the incorporation of POSS molecules into the polymer matrixes will lower the dielectric constant (k) of the resulted hybrids (both pendant-type and star-type). At the same POSS content, the star-type hybrids possess a lower k than those of pendant-type ones, which is mainly assigned to the larger free volume resulted from star-type hybrids. Simultaneously, it is found that the dielectric constant of the resulting hybrids increases with the polarity of organic polymeric chain when possessing the similar molecular structure and POSS content. © 2010 American Chemical Society.
Source Title: Journal of Physical Chemistry C
URI: http://scholarbank.nus.edu.sg/handle/10635/97166
ISSN: 19327447
DOI: 10.1021/jp1080753
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

26
checked on Jul 20, 2018

WEB OF SCIENCETM
Citations

24
checked on Jun 5, 2018

Page view(s)

30
checked on Jun 1, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.