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Stereoselective Plasmonic Interaction in Peptide‐tethered Photopolymerizable Diacetylenes Doped with Chiral Gold Nanoparticles

Joseph, Jojo P. ; Miglani, Chirag ; Maulik, Antarlina ; Abraham, Shema R. ; Dutta, Avisek ; Baev, Alexander ; Prasad, Paras N. ; Pal, Asish

Angewandte Chemie (International ed.), 2023-09, Vol.62 (37), p.e202306751-n/a [Periódico revisado por pares]

Germany: Wiley Subscription Services, Inc

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Título:
Stereoselective Plasmonic Interaction in Peptide‐tethered Photopolymerizable Diacetylenes Doped with Chiral Gold Nanoparticles
Autor: Joseph, Jojo P. ; Miglani, Chirag ; Maulik, Antarlina ; Abraham, Shema R. ; Dutta, Avisek ; Baev, Alexander ; Prasad, Paras N. ; Pal, Asish
Assuntos: Amino acids ; Circular dichroism ; Dichroism ; Esters ; Gold ; Nanoparticles ; Optical activity ; Photopolymerization ; Plasmonics ; Polydiacetylenes ; Polymers ; Self-assembly ; Solid phases ; Stereoselectivity ; This work was supported by the Air Force Office of Scientific Research (Program Officer: Dr. Kenneth Caster), Grant # FA9550-20-1-0267. We thank the Institute of Nano Science and Technology (INST), Mohali for providing infrastructure and characterization facilities. A. Pal acknowledges DST, SERB grant CRG/2020/004251 for the financial support
É parte de: Angewandte Chemie (International ed.), 2023-09, Vol.62 (37), p.e202306751-n/a
Notas: These authors contributed equally to this work.
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Descrição: Designing polymeric systems with ultra‐high optical activity is instrumental in the pursuit of smart artificial chiroptical materials, including the fundamental understanding of structure/property relations. Herein, we report a diacetylene (DA) moiety flanked by chiral D‐ and L‐FF dipeptide methyl esters that exhibits efficient topochemical photopolymerization in the solid phase to furnish polydiacetylene (PDA) with desired control over the chiroptical properties. The doping of the achiral gold nanoparticles provides plasmonic interaction with the PDAs to render asymmetric shape to the circular dichroism bands. With the judicious design of the chiral amino acid ligand appended to the AuNPs, we demonstrate the first example of selective chiral amplification mediated by stereo‐structural matching of the polymer‐plasmonic AuNP hybrid pairs. Such ordered self‐assembly aided by topochemical polymerization in peptide‐tethered PDA provides a smart strategy to produce soft responsive materials for applications in chiral photonics. Peptide‐tethered diacetylene monomers exhibit efficient topochemical photopolymerization and allow control over the chiroptical properties of the resulting chiral polydiacetylenes. Achiral and chiral gold nanoparticles were incorporated in the chiral polymers and the stereoselective plasmonic interactions investigated, with the ultimate goal of designing next‐generation organic–inorganic hybrid materials with large chiroptic effects.
Editor: Germany: Wiley Subscription Services, Inc
Idioma: Inglês

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Stereoselective Plasmonic Interaction in Peptide‐tethered Photopolymerizable Diacetylenes Doped with Chiral Gold Nanoparticles

Joseph, Jojo P. ; Miglani, Chirag ; Maulik, Antarlina ; Abraham, Shema R. ; Dutta, Avisek ; Baev, Alexander ; Prasad, Paras N. ; Pal, Asish

Germany: Wiley Subscription Services, Inc

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