Synthesis,thermal analysis,and linear and nonlinear optical characterization of substituted polyphosphonates derived from 1,12‐dodecanediol |
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Authors: | Jason L Freeman Justin R Martin T Ross Totsch Farid Marashi Nia Jianwei Wang Yuanli Zhang Benjamin Yancey Jeffrey L Atkinson Christopher M Lawson Gary M Gray |
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Institution: | 1. Department of Chemistry, University of Alabama at Birmingham, Birmingham, Alabama;2. Department of Physics, University of Alabama at Birmingham, Birmingham, Alabama |
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Abstract: | The syntheses of a series of substituted polyphosphonates of the type OP(X)(Ar)O(CH2)12]n (X = O, S, Se; Ar = phenyl, 2,2′‐bithienyl‐5‐yl) are reported. The s for the polyphosphonates range from 1.1 to 4.6 × 104 Da and are significantly higher than those previously reported for polyphosphonates synthesized via polycondensation reactions. Thermal characterization indicates that all of the polymers are in the rubbery state at room temperature and have thermal stabilities as high as 290 °C. The linear absorption spectra, emission spectra, and emission quantum yields of the 2,2′‐bithenyl‐5‐yl substituted polyphosphonates show distinct trends with respect to the chalcogen attached to the phosphorus. Solutions of these polymers show emission at wavelengths ranging from 380 to 400 nm and, depending on the choice of X, the quantum yields are considerably larger than that of 2,2′‐bithiophene. Nonlinear optical measurements of the polyphosphonates with 2,2′‐bithenyl‐5‐yl substituents show that nonlinear absorbance increases with increasing molecular weight of X. © 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2016 , 54, 3663–3674 |
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Keywords: | fluorescence nonlinear absorbance polyphosphonates polycondensation thermal properties |
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