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- W1978331104 abstract "1,3-Dipolar cycloadditions have been used to prepare a series of functionalized poly(p-phenyleneethynylene)s (PPEs). This was accomplished by employing a PPE with pendent triisopropylsilylacetylene groups. The triisopropylsilyl groups can be removed in situ, exposing free alkynes in the side chains of the polymer to react with azides in a postpolymerization functionalization strategy in a 1,3-dipolar cycloaddition. The properties of these polymers were explored and compared to polymers of the same molecular structure but synthesized by a prepolymerization functionalization approach. Polymers of the same structure exhibit identical 1H NMR, 13C NMR, and IR spectra regardless of whether they were obtained by a conventional route or by postfunctionalization of a suitable PPE. UV−vis and fluorescence spectra are similar in solution. Postmodification through click chemistry, when compared to premodification, is an excellent method to produce functionalized, defect-free PPEs. Reaction of the azides with the main chain alkyne units is not observed." @default.
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- W1978331104 date "2005-06-15" @default.
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- W1978331104 title "Click Chemistry as a Powerful Tool for the Construction of Functional Poly(<i>p</i><i>-</i>phenyleneethynylene)s: Comparison of Pre- and Postfunctionalization Schemes" @default.
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- W1978331104 doi "https://doi.org/10.1021/ma050484p" @default.
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