Advances in polymers for PLEDs: from a polymerization mechanism to industrial manufacturing

The Gilch Synthesis of Poly(p‐phenylene vinylenes): Mechanistic Knowledge in the Service of Advanced Materials

“…On the other hand, there are still many unanswered questions and contradicting observations in this area. For example, TBB defects are reported to contribute significantly to devices' ageing and fatigue, [143] but on the other hand analogous structural elements are intentionally introduced into specific PPVs in order to tailor the OLEDs' electroluminescence characteristics by tailoring the conjugation length and shifting the HOMO/LUMO levels. Another critical defect in PPVs might be the ArÀCHXÀCH 2 moiety, which is a result of a PPX repeating unit that did not eliminate the HX and hence was not converted into a regular ArÀCH¼CH moiety.…”

Soluble PPVs with few structural defects: Synthesis and characterization

“…To be suitable for LED applications the PPVs must be free of structural defects [18], so several modified Gilch routes have been proposed. The degree of gelation can be minimized by slow intermittent addition of a great excess of a base, according to the procedure described by Wuld et al [17].…”

Side‐Chain Degradation of Ultrapure π‐Conjugated Oligomers: Implications for Organic Electronics

“…[10] Here, we report an unanticipated benefit of access to these ultrapure oligomers, namely a detailed insight into the mechanisms of their degradation. Successful introduction of products into the market can be hampered by limited stability during processing and device operation, [11] and improved understanding of the degradation of active components in existing devices is consequently critical for the long-term success of emerging plastic electronics and putative (supra)molecular electronics. Many techniques have been applied to studies in this area; [12][13][14][15][16] in this work, the monodispersity and exceptionally high levels of oligomer purity available allow us to use matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) as the main probe; this and related powerful analytical techniques have only rarely been explored in this field.…”