Stilbene-cored poly(glutamate) dendrimers

Mitsuno, Chikayoshi; Momotake, Atsuya; Shinohara, Yoshikazu; Takahashi, Kayori; Nagahata, Ritsuko; Nishimura, Yukio; Arai, Tatsuo

doi:10.1016/j.tetlet.2009.10.004

Cited by 5 publications

(1 citation statement)

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“…The self-assembly properties of poly(glutamate) dendrimers with photoresponsive cores have not been examined 13 due to electrostatic repulsion of the carboxylate anion at the periphery. 14,15 We found, however, a new capability of poly(glutamate) dendrons: when their peripheral groups are carboxylic ester functions, they serve to organize the dendrimer, leading to the formation of chiral architectures centered around the stilbene core. In this case, a bisignate circular dichroism signal was observed in the stilbene absorption region.…”

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Self-assembly of a poly(glutamate) dendrimer: solvent-dependent expression of molecular chirality and a [2 + 2] photocrosslinking reaction

Ikeda

Momotake

Kanna

et al. 2012

Photochem Photobiol Sci

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confidence: 99%

Self-assembly of a poly(glutamate) dendrimer: solvent-dependent expression of molecular chirality and a [2 + 2] photocrosslinking reaction

Ikeda

Momotake

Kanna

et al. 2012

Photochem Photobiol Sci

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Stimuli‐Responsive Dendrimers

Caminade

2011

Dendrimers

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Scissor‐Shaped Photochromic Dyads: Hierarchical Self‐Assembly and Photoresponsive Property

Tashiro

Saito

Arima

et al. 2021

The Chemical Record

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Unique relationships between hierarchically organized biological nanostructures and functions have motivated chemists to construct sophisticated artificial nanostructured systems from small and simple synthetic molecules through self-assembly. As one of such sophisticated systems, we have investigated scissor-shaped photochromic dyads that can hierarchically selfassemble into discrete nanostructures showing photoresponsive properties. We synthesized various azobenzene dyads and found that these dyads adopt intramolecularly folded conformation like a closed scissor, and then self-assemble into toroidal nanostructures by generating curvature. The toroids further organize into nanotubes and further into helical supramolecular fibers depending on the nature of alkyl substituents. All of these nanostructures can be dissociated and reorganized through the photoisomerization of azobenzene units. On the other hand, the introduction of stilbene chromophores instead of azobenzenes leads to onedimensional supramolecular polymerization, which upon the intramolecular photocyclization of stilbene chromophores shifts to curved self-assembly leading to helicoidal fibers with distinct supramolecular chirality.

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Stilbene-cored poly(glutamate) dendrimers

Cited by 5 publications

References 56 publications

Self-assembly of a poly(glutamate) dendrimer: solvent-dependent expression of molecular chirality and a [2 + 2] photocrosslinking reaction

Self-assembly of a poly(glutamate) dendrimer: solvent-dependent expression of molecular chirality and a [2 + 2] photocrosslinking reaction

Stimuli‐Responsive Dendrimers

Scissor‐Shaped Photochromic Dyads: Hierarchical Self‐Assembly and Photoresponsive Property

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