Polarization Mediated Chemistry on Ferroelectric Polymer Surfaces

Zhengzheng Zhang, Rosette González, Gerson Díaz, Luis G. Rosa, Ihor Ketsman, Xin Zhang, Pankaj Sharma, Alexei Gruverman, Peter A. Dowben

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

We have investigated the chemisorption of two isomers of diiodobenzene on the molecular ferroelectric copolymer poly(vinylidene fluoride) with trifluoroethylene (70:30) as a function of the polymeric ferroelectric domain orientation. We find that the 1,4-p-diiodobenzene adsorption at 150 K strongly favors a positive ferroelectric domain orientation while the 1,2-o-diiodobenzene adsorption at 150 K strongly favors a negative ferroelectric domain orientation. Both polar and nonpolar adsorbates are influenced by the substrate dipole direction. Because a nonpolar isomer is also affected by the surface dipole direction, and hence the surface chemical termination, it is clear that surface chemistry and not simply surface dipoles matter in the chemisorption process.

Original languageEnglish
Pages (from-to)13041-13046
Number of pages6
JournalJournal of Physical Chemistry C
Volume115
Issue number26
DOIs
Publication statusPublished - 7 Jul 2011
Externally publishedYes

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