https://doi.org/10.1351/goldbook.08896
Polymer composed of macromolecules containing exclusively alternating phenylene or substituted phenylene and ethynediyl (formerly ethynylene) constitutional repeating units in the backbone:
where \(\ce{R^{1}}\), \(\ce{R^{2}}\), \(\ce{R^{3}}\) and \(\ce{R^{4}}\) are each hydrogen, alkyl, aryl, halogen, trialkylsilyl etc. (structure-based polymer class name).
Note:
Polyphenylenethynylenes are a subclass of polyarylenethynylenes and also a subclass of conjugated polymers (except for those containing 1,3-phenylene constitutional repeating units).
Polyphenylenethynylenes are a subclass of polyarylenethynylenes and also a subclass of conjugated polymers (except for those containing 1,3-phenylene constitutional repeating units).
Example:
Source:
PAC, 2022, 94, 15. 'Glossary of terms relating to electronic, photonic and magnetic properties of polymers (IUPAC Recommendations 2021)' on page 59 (https://doi.org/10.1515/pac-2020-0501)
PAC, 2022, 94, 15. 'Glossary of terms relating to electronic, photonic and magnetic properties of polymers (IUPAC Recommendations 2021)' on page 59 (https://doi.org/10.1515/pac-2020-0501)