Synthesis of soluble poly(p -phenylene methylene) from tribenzylborate by acid-catalyzed polymerization

Deniz Gunes; Yusuf Yagci; Niyazi Bicak

doi:10.1021/ma1008435

Synthesis of soluble poly(p -phenylene methylene) from tribenzylborate by acid-catalyzed polymerization

Deniz Gunes, Yusuf Yagci, Niyazi Bicak^*

^*Corresponding author for this work

Department of Voice Training

Istanbul Technical University

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

An acid-catalyzed polymerization of tribenzylborate (TBB) is described for the synthesis of soluble poly(phenylene methylene) (PPM). The polymerization proceeds via carbocationic mechanism with first-order kinetics with respect to TBB and 0.7th order with respect to acid concentration. The structure of PPM was characterized by ¹H and ¹³C NMR analysis. Thermal properties of PPM were investigated by TGA and DSC, and thermally stable polymers displayed completly amorphous structure, which was attributed to nonrestricted rotation of the phenyl rings around bridged methylene units in the rodlike structure. PPM exhibits a broad fluorescence emission band with a maximum at 422 nm arising from the benzonoid transition. The extremely low dielectric constant of PPM suggests that these polymers can be used as polymer insulators.

Original language	English
Pages (from-to)	7993-7997
Number of pages	5
Journal	Macromolecules
Volume	43
Issue number	19
DOIs	https://doi.org/10.1021/ma1008435
Publication status	Published - 12 Oct 2010

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abstract = "An acid-catalyzed polymerization of tribenzylborate (TBB) is described for the synthesis of soluble poly(phenylene methylene) (PPM). The polymerization proceeds via carbocationic mechanism with first-order kinetics with respect to TBB and 0.7th order with respect to acid concentration. The structure of PPM was characterized by 1H and 13C NMR analysis. Thermal properties of PPM were investigated by TGA and DSC, and thermally stable polymers displayed completly amorphous structure, which was attributed to nonrestricted rotation of the phenyl rings around bridged methylene units in the rodlike structure. PPM exhibits a broad fluorescence emission band with a maximum at 422 nm arising from the benzonoid transition. The extremely low dielectric constant of PPM suggests that these polymers can be used as polymer insulators.",

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AU - Yagci, Yusuf

AU - Bicak, Niyazi

PY - 2010/10/12

Y1 - 2010/10/12

N2 - An acid-catalyzed polymerization of tribenzylborate (TBB) is described for the synthesis of soluble poly(phenylene methylene) (PPM). The polymerization proceeds via carbocationic mechanism with first-order kinetics with respect to TBB and 0.7th order with respect to acid concentration. The structure of PPM was characterized by 1H and 13C NMR analysis. Thermal properties of PPM were investigated by TGA and DSC, and thermally stable polymers displayed completly amorphous structure, which was attributed to nonrestricted rotation of the phenyl rings around bridged methylene units in the rodlike structure. PPM exhibits a broad fluorescence emission band with a maximum at 422 nm arising from the benzonoid transition. The extremely low dielectric constant of PPM suggests that these polymers can be used as polymer insulators.

AB - An acid-catalyzed polymerization of tribenzylborate (TBB) is described for the synthesis of soluble poly(phenylene methylene) (PPM). The polymerization proceeds via carbocationic mechanism with first-order kinetics with respect to TBB and 0.7th order with respect to acid concentration. The structure of PPM was characterized by 1H and 13C NMR analysis. Thermal properties of PPM were investigated by TGA and DSC, and thermally stable polymers displayed completly amorphous structure, which was attributed to nonrestricted rotation of the phenyl rings around bridged methylene units in the rodlike structure. PPM exhibits a broad fluorescence emission band with a maximum at 422 nm arising from the benzonoid transition. The extremely low dielectric constant of PPM suggests that these polymers can be used as polymer insulators.

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Synthesis of soluble poly(p -phenylene methylene) from tribenzylborate by acid-catalyzed polymerization

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