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Highly fluorinated low-molecular-weight photoresists for optical waveguides.
- Source :
- Journal of Polymer Science Part A: Polymer Chemistry; Feb2011, Vol. 49 Issue 3, p762-769, 8p
- Publication Year :
- 2011
-
Abstract
- A series of highly fluorinated polymers were synthesized by copolymerization of 2,3,4,5,6-pentafluorostyrene (PFS) and fluorinated styrene derivate monomer (FSDM). Their chemical structure were confirmed by <superscript>1</superscript>H NMR, <superscript>13</superscript>C NMR, and <superscript>19</superscript>F NMR spectra. The refractive index and cross-linking density of the polymers can be tuned and controlled by monitoring the feed ratio of comonomers. A series of negative-type low-molecular-weight fluorinated photoresists (NFPs) were prepared by composing of fluorinated polystyrene derivates (FPSDs), diphenyl iodonium salt as a photoacid generator (PAG) and solvent. The polymer films prepared from NFP by photocuring exhibited excellent chemical resistance and thermal stabilities ( T<subscript>d</subscript> ranged from 230.5 to 258.1 °C). A clear negative pattern was obtained through direct UV exposure and chemical development. For waveguides without upper cladding, the propagation loss of the channel waveguides was measured to be 0.25 dB/cm at 1550 nm. © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2011 [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0887624X
- Volume :
- 49
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Journal of Polymer Science Part A: Polymer Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 71515124
- Full Text :
- https://doi.org/10.1002/pola.24489