Abstract
2,2′:6′,2″-Terpyridine (tpy) is a versatile moiety used in the construction of small novel molecules or polymers. Extending or coupling tpy with π-conjugation structures can result in interesting optoelectronic properties. This mini-review summarizes the significant progress made over the past decades in the study of tpy-containing π-conjugated polymers and their application in light-emitting and photovoltaic materials. When coordinated with metal ions, tpy exhibits immense potential for the synthesis of metallo-supramolecular or metallo-polymer materials. Therefore, tpy-based metallo-polymers are the primary focus of this study. Selected examples will be reviewed with a special emphasis on the properties of these functional systems, which can consequently help further their application in light-to-electricity or electricity-to-light conversion fields.
Highlights
2,2′:6′,2′′-Terpyridine ligands are effective coordinating agents and key building blocks in supramolecular chemistry and materials because the 4′-position of the central pyridine ring can be substituted
Terpyridine Conjugated Polymer Photoelectric Materials light-emitting diodes (OLEDs) based on tpy complexes were fabricated and evaluated, and the tpy units introduced into the side chain of the functional polymers were usually coordinated with metals
The results showed that in cationic metallo-polymers, a minimum iridium concentration of 5% is necessary for light emission
Summary
2,2′:6′,2′′-Terpyridine (tpy) ligands are effective coordinating agents and key building blocks in supramolecular chemistry and materials because the 4′-position of the central pyridine ring can be substituted. The advantages of tpy-based metallo-polymers, increased coordination with transition metal ions, modifiable molecular structure, performance, excellent electrochemical properties, and good thermal stability, render them appropriate candidates for application in photoelectric materials and devices. We review the most important results that deal with the synthesis of π-conjugated polymers containing tpy moieties, with an emphasis on metallo-polymers, and their application in light-emitting and photovoltaic materials and devices
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