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

Abbel, Robert; Wolffs, Martin; Bovee, Ralf A. A.; Dongen, Joost L. J. van; Lou, Xianwen; Henze, Oliver; Feast, W. James; Meijer, E. W.; Schenning, Albertus P. H. J.

doi:10.1002/adma.200802416

Cited by 52 publications

(48 citation statements)

References 40 publications

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“…565 The -conjugated segment in polyfluoerene acts as a photosensitizer or forms a complex with dioxygen to create singlet oxygen, leading to decomposition of the side chains. 566 Dimerization is consistent with a radical mechanism. 566 Exceptionally careful handling is needed during manipulation of -conjugated materials, along with effective encapsulation to exclude air if stability during long-term operation is a prerequisite.…”

Section: Polyfluorenesupporting

confidence: 60%

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Data on Specific Polymers

Wypych¹

2013

Handbook of Material Weathering

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Section: Polyfluorenesupporting

confidence: 60%

“…566 Exceptionally careful handling is needed during manipulation of -conjugated materials, along with effective encapsulation to exclude air if stability during long-term operation is a prerequisite. 566 …”

Section: Polyfluorenementioning

confidence: 99%

Data on Specific Polymers

Wypych¹

2013

Handbook of Material Weathering

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“…This suggests that the fluorenone moieties www.afm-journal.de Scheme 1. Chemical structures of the PF (1) and model compounds (2)(3)(4)(5) studied in this work.…”

Section: Spectroscopic Studiesmentioning

confidence: 99%

Understanding the Nature of the States Responsible for the Green Emission in Oxidized Poly(9,9‐dialkylfluorene)s: Photophysics and Structural Studies of Linear Dialkylfluorene/Fluorenone Model Compounds

Chan

Sims

Pascu

et al. 2009

Adv Funct Materials

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Here, the optical properties of a series of structurally well‐defined model compounds for oxidatively degraded poly(dialkylfluorenes) (PFs) are reported. Specifically, linear compounds comprising one, two, or four dihexylfluorene (F) moieties together with one fluorenone (O) moiety placed either at the end or in the center of each chain (i.e., FO, FFO, FOF, FFOFF) are studied. The results support the recent observation that the photophysics of the fluorenone‐centered “pentamer” (FFOFF) is most similar to that of oxidized PFs. They further demonstrate that molecule–molecule interaction is essential to activate the green emission band. Investigations by X‐ray diffraction (XRD) identify the solid‐state structure of a representative member of this class of compounds and reveal inter‐molecular interaction through dipole–dipole coupling between neighboring fluorenone moieties.

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“…[24] Overcoming the relatively poor life-time and the low carrier mobility of organic materials remains a major obstacle in the field. [25][26][27][28][29][30][31] There have been tremendous improvements in this regard through systematic studies and design of various organic molecules over the years, and still further optimization may be achieved in the future. [32][33][34][35][36][37][38] However, attaining highperformance devices, capable of operating near the performance metrics of inorganic devices (such as Si metal oxide semiconductor field-effect transistors (MOSFETs)) is most likely not feasible with organic channel materials, mainly due to the intrinsic carrier-transport mechanism associated with organic films, and which limits their carrier mobility.…”

Section: Introductionmentioning

confidence: 99%

Toward the Development of Printable Nanowire Electronics and Sensors

et al. 2009

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In recent years, there has been tremendous progress in the research and development of printable electronics on mechanically flexible substrates based on inorganic active components, which provide high performances and stable device operations at low cost. In this regard, various approaches have been developed for the direct transfer or printing of micro‐ and nanoscale, inorganic semiconductors on substrates. In this review article, we focus on the recent advancements in the large‐scale integration of single crystalline, inorganic‐nanowire (NW) arrays for electronic and sensor applications, specifically involving the contact printing of NWs at defined locations. We discuss the advantages, limitations, and the state‐of‐the‐art of this technology, and present an integration platform for future printable, heterogeneous‐sensor circuitry based on NW parallel arrays.

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

Cited by 52 publications

References 40 publications

Data on Specific Polymers

Data on Specific Polymers

Understanding the Nature of the States Responsible for the Green Emission in Oxidized Poly(9,9‐dialkylfluorene)s: Photophysics and Structural Studies of Linear Dialkylfluorene/Fluorenone Model Compounds

Toward the Development of Printable Nanowire Electronics and Sensors

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