Issue 5, 2008
From the journal:

Journal of Materials Chemistry

Ultra-low-κ materials derived from poly(d,l-lactide-b-pentafluorostyrene) diblock copolymers†

Tracy L. Bucholz,‡a   Sally Peng Li‡a  and  Yueh-Lin Loo*ab  

* Corresponding authors

a Department of Chemical Engineering, University of Texas at Austin, Austin, TX, U. S. A.

b Department of Chemical Engineering, Princeton University, Princeton, NJ, U. S. A.
E-mail: lloo@princeton.edu
Fax: +1-609-258-0211
Tel: +1-609-258-9091

Abstract

Well-defined diblock copolymers of D,L-lactide and pentafluorostyrene with narrow molecular weight distributions (polydispersity index <1.25) were successfully synthesized via sequential ring-opening and atom transfer radical polymerizations. Poly(D,L-lactide) is the minority component; microphase separation results in discrete poly(D,L-lactide) nanostructures organized in a polypentafluorostyrene matrix. The poly(D,L-lactide) block was then quantitatively degraded and removed via acid-catalyzed hydrolysis to yield a nanoporous fluorinated matrix with the same lattice dimensions as those of the parent diblock copolymer. These nanoporous fluorinated films have overall dielectric constants <2.0, making them suitable candidates as interlayer metal insulators in microelectronic applications. Further, the dielectric constants of these films can be tuned by adjusting the amount of poly(D,L-lactide) in the parent diblock copolymers during synthesis.

Graphical abstract: Ultra-low-κ materials derived from poly(d,l-lactide-b-pentafluorostyrene) diblock copolymers

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Article information

DOI
https://doi.org/10.1039/B714941G
Article type
Paper
Submitted
28 Sep 2007
Accepted
16 Nov 2007
First published
30 Nov 2007

J. Mater. Chem., 2008,18, 530-536

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Ultra-low-κ materials derived from poly(D,L-lactide-b-pentafluorostyrene) diblock copolymers

T. L. Bucholz, S. P. Li and Y. Loo, J. Mater. Chem., 2008, 18, 530 DOI: 10.1039/B714941G

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