Regulation of electronic behavior via confinement of PPV-based oligomers on peptide scaffolds

Kas, Onur Y.; Charati, Manoj B.; Rothberg, Lewis J.; Galvin, Mary E.; Kiick, Kristi L.

doi:10.1039/b800860d

Cited by 19 publications

(28 citation statements)

References 51 publications

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“…This design strategy for the regulation of electronic behavior of organic conductive components would also apply to nonfullerene systems. 10,13 It can also be further coupled with the strategy of side-chain tuning, which helps to decrease the interchain transport, to capitalize the overall enhancement of charge transport in bulk. Moreover, these polymer thin lms showed excellent solvent resistance as a result of their high molecular weight despite their high solubility, making them potentially interesting in solution-processed device fabrications.…”

Section: Resultsmentioning

confidence: 99%

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Confined organization of fullerene units along high polymer chains

et al. 2013

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Conductive fullerene (C 60 ) units were designed to be arranged in one dimensional close contact by locally organizing them with covalent bonds in a spatially constrained manner. Combined molecular dynamics and quantum chemical calculations predicted that the intramolecular electronic interactions (i.e. charge transport) between the pendant C 60 units could be controlled by the length of the spacers linking the C 60 units and the polymer main chain. In this context, C 60 side-chain polymers with high relative degrees of polymerization up to 1220 and fullerene compositions up to 53% were synthesized by ruthenium catalyzed ring-opening metathesis polymerization of the corresponding norbornene-functionalized monomers. UV/vis absorption and photothermal deflection spectra corroborated the enhanced interfullerene interactions along the polymer chains. The electron mobility measured for the thin film fieldeffect transistor devices from the polymers was more than an order of magnitude higher than that from the monomers, as a result of the stronger electronic coupling between the adjacent fullerene units within the long polymer chains. This molecular design strategy represents a general approach to the enhancement of charge transport properties of organic materials via covalent bond-based organization.

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Section: Resultsmentioning

confidence: 99%

“…Attempts had been made to organize conductive chromophores along linear polymer chains [9][10][11][12] and in some cases the corresponding charge transport mobility was measured. 13 However, no enhancement of charge carrier mobility of such polymeric systems has been reported, compared to the corresponding monomer lm.…”

Section: 8mentioning

confidence: 99%

Confined organization of fullerene units along high polymer chains

et al. 2013

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“…Engineered repeat proteins can be used as modular platforms for controlling the placement of functional groups, 59 and attachment to a rigid a-helix backbone can control the spacing between organic chromophores. 60 Protein nanostructures offer two important advantages as templates for nanomaterial self-assembly: first, the protein template self-assembly is often orthogonal to the behavior of attached functional groups, enabling the protein assembly to be designed separately from the functional group and to govern the placement of the functional group within the final nanostructure. Second, changes in the sequence of the selfassembling protein provide a valuable method to control the functionalization location and the structure of the selfassembly, allowing the chemistry and physics of the material to be tuned.…”

Section: Proteins As Templates For Self-assemblymentioning

confidence: 99%

Engineering materials from proteins

Olsen

2013

AIChE Journal

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“…[1][2][3][4] Functionalizing self-assembling peptides with π-electron groups provides an attractive route to form ordered structures with long-range π-conjugated networks that can enable charge transporting field-effect transistor and solar cell applications. [5][6][7][8][9][10][11] These materials could also be used for biocompatible applications due to their aqueous processability. However, peptide-π electron networks vary significantly from the natural peptide systems due to the presence of non-natural π-electron systems.…”

Section: Introductionmentioning

confidence: 99%

Aqueous Self-Assembly of Peptide–Diketopyrrolopyrrole Conjugates with Variation of N-Alkyl Side Chain and π-Core Lengths

Panda

Tovar

2021

Organic Materials

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Peptidic sequences when conjugated to π-electronic groups form self-assembled networks of π-electron pathways. These materials hold promise for bio-interfacing charge transporting applications because of their aqueous processability and compatibility. In this work, we incorporated diketopyrrolopyrrole (DPP), a well-established π-core for organic electronic applications, within the peptidic sequence. We embedded different numbers of thiophene rings (2 and 3) on both sides of the DPP to alter the length of the π-cores. We also varied the length of the N-alkyl side chains (methyl, butyl, hexyl) attached to the DPP core. These variations allowed us to explicitly study the effect of π-core and N-alkyl side-chain length on photophysical properties and morphology of the resulting nanomaterials. All of these molecules formed H-type aggregates in the assembled state. Longer π-cores have relatively red-shifted absorption maxima whereas the N-alkyl variation did not present significant photophysical changes.

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Regulation of electronic behavior via confinement of PPV-based oligomers on peptide scaffolds

Cited by 19 publications

References 51 publications

Confined organization of fullerene units along high polymer chains

Confined organization of fullerene units along high polymer chains

Engineering materials from proteins

Aqueous Self-Assembly of Peptide–Diketopyrrolopyrrole Conjugates with Variation of N-Alkyl Side Chain and π-Core Lengths

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