All‐Conjugated, Rod‐Rod Block Copolymers‐Generation and Self‐Assembly Properties

Scherf, Ullrich; Adamczyk, Sylwia; Gutacker, Andrea; Koenen, Nils

doi:10.1002/marc.200900088

Cited by 86 publications

(65 citation statements)

References 25 publications

(28 reference statements)

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“…Scherf and co‐workers prepared two block‐copolymer derivatives with a rod‐rod structure. In this example, the polythiophene‐block‐polyfluorene were composed of a similar polyalkylfluorene block (PF2/6) and a polythiophene block functionalized with either a phosphonic ester side group (P3PHT) or a cationic side group (P3AHT) (Scheme ) 49, 50. In case of the non‐charged PF2/6‐ b ‐P3PHT, progressive addition of water to a THF solution of the polymer led to the formation of vesicles via a two‐step process.…”

Section: Self‐assembled Nanoparticles Based On Polydisperse π‐Conjmentioning

confidence: 99%

Fluorescent Nanoparticles Based on Self‐Assembled π‐Conjugated Systems

2010

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pi-Conjugated molecules are interesting components to prepare fluorescent nanoparticles. From the use of polymer chains that form small aggregates in water to the self-assembly of small chromophoric segments into highly ordered structures, the preparation of these materials allows to develop systems with applications as sensors or biolabels. The potential functionalization of the nanoparticles can lead to specific probing. This progress report describes the recent advances in the preparation of such emittive organic nanoparticles.

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Section: Self‐assembled Nanoparticles Based On Polydisperse π‐Conjmentioning

confidence: 99%

Fluorescent Nanoparticles Based on Self‐Assembled π‐Conjugated Systems

2010

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“…This process is called Förster Resonant Energy transfer (FRET) . In electroluminescent devices, it is possible to exploit FRET to tune the color of the emitted light using an active layer which includes several materials with different proper optical gaps . To provide an efficient technique for internal color conversion, polymer–polymer and polymer–dye blends have been also shown to lead to a significant improvement in photoluminescence (PL) and electroluminescence (EL) quantum efficiencies .…”

Section: Introductionmentioning

confidence: 99%

Ultrafast study of inter‐ and intrachain energy transfer in a core–polymer

Bolis

Pasini

Virgili

2018

J Polym Sci B Polym Phys

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Interchain interactions can play a positive role in reaching amplified spontaneous emission in an interesting core-polymer system where the donor (side chains) and the acceptor (core) are chemically linked together. Different degree of interchain interactions modifies the photophysical characteristics of the polymer. By means of transient absorption spectroscopy we show that the stimulated emission from the core decreases passing from solid state to concentrated solution and it is almost absent in the diluted solution. The conformational rearrangements of the core-polymer chain in solution limits the efficiency of the intrachain F€ orster energy transfer mechanism. The free chain rotations decrease the exciton hopping along the conjugated chains, the ratio between donor and acceptor moieties in the polymer, and change the relative orientation of the transition dipoles of the donor and acceptor causing a strong decrease of energy transfer efficiency and subsequently of the gain. V C 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2018, 56, 965-969

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“…As a result, these materials also offer significant opportunities in a number of fundamental areas. For example, the self‐assembly of fully conjugated block copolymers affords structures with low curvature due to the reduced coiling ability and long persistence length of conjugated polymers leading to preferential formation of large vesicles or lamellae in solution or the solid state, respectively . While these properties may limit access to more complex nanostructures such as bicontinuous or cylindrical morphologies, fully conjugated block copolymers have the distinct advantage that the entire polymer is semiconducting and can be electrically conductive.…”

Section: Introductionmentioning

confidence: 99%

25th Anniversary Article: No Assembly Required: Recent Advances in Fully Conjugated Block Copolymers

Robb

Hawker

2013

Advanced Materials

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Fully conjugated block copolymers have emerged as promising materials that combine semiconducting properties with the ability to self-assemble at the nanoscale. The convergence of these two features has tremendous implications for a number of fundamental molecular assembly and transport questions, while also offering unique advantages for a variety of applications. For example, a nanostructured active layer in organic photovoltaic (OPV) devices may provide for efficient charge separation while simultaneously affording continuous, unimpeded pathways for charge carriers to migrate to their respective electrodes within each individual microphase. This review details the recent progress made in the preparation and application of fully conjugated block copolymers and serves as a comprehensive reference for the materials that have been reported in the literature to date. Focus is placed on fully conjugated block copolymers prepared using chemistries that are relevant to high-performance polymers in organic electronics research, for example Stille, Suzuki-Miyaura, and Yamamoto coupling.

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All‐Conjugated, Rod‐Rod Block Copolymers‐Generation and Self‐Assembly Properties

Cited by 86 publications

References 25 publications

Fluorescent Nanoparticles Based on Self‐Assembled π‐Conjugated Systems

Fluorescent Nanoparticles Based on Self‐Assembled π‐Conjugated Systems

Ultrafast study of inter‐ and intrachain energy transfer in a core–polymer

25th Anniversary Article: No Assembly Required: Recent Advances in Fully Conjugated Block Copolymers

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