Enhanced nonlinear optical properties of Au<sub>25</sub> nanocluster oligomers linked by bidentate dithiol

Obstarczyk, Patryk; Osmólska, Julia; Swierczewski, Michał; Bürgi, Thomas; Samoć, Marek; Olesiak-Bańska, Joanna

doi:10.1039/d4tc01698j

J. Mater. Chem. C

2024

DOI: 10.1039/d4tc01698j

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Enhanced nonlinear optical properties of Au₂₅ nanocluster oligomers linked by bidentate dithiol

Patryk Obstarczyk,

Julia Osmólska,

Michał Swierczewski

et al.

Abstract: Oligomerization of atomically-precise clusters leads to enhancements of their nonlinear optical performance (9000 GM for monomers, 66 000 GM for trimers).

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Two-Photon and Three-Photon Circular Dichroism of Au₃₈ Gold Nanoclusters Enantiomers

Obstarczyk,

Kazan,

Bürgi

et al. 2024

J. Am. Chem. Soc.

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While circular dichroism (CD) and optical activity (OA) are well established as optical effects used in characterization of chiral media, harmonic generation and multiphoton circular dichroism are increasingly seen as new, convenient ways of exploring chirality thanks to their operation in the near-infrared range of wavelengths. However, quantitative data about twophoton circular dichroism (2PCD) of organic and inorganic materials are scarce, and even less can be found about three-photon circular dichroism (3PCD). Here, we show that both 2PCD and 3PCD can be readily detected in chiral atomically precise gold nanoclusters via polarimetric Z-scan technique. We provide quantitative data on 2PCD and 3PCD of both enantiomers of Au 38 (PET) 24 nanoclusters, which exhibit extraordinary chiroptical properties arising from the interplay of several levels of molecular organization. Interestingly, the corresponding two-and three-photon dissymmetry factors of Au 38 (PET) 24 enantiomers are significantly enhanced in comparison to the one-photon CD by factors of 178 and 217, respectively.

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Two-Photon and Three-Photon Circular Dichroism of Au₃₈ Gold Nanoclusters Enantiomers

Obstarczyk,

Kazan,

Bürgi

et al. 2024

J. Am. Chem. Soc.

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A comprehensive review of atomically precise metal nanoclusters with emergent photophysical properties towards diverse applications

Maity,

Kolay,

Chakraborty

et al. 2025

Chem. Soc. Rev.

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Enhanced nonlinear optical properties of Au₂₅ nanocluster oligomers linked by bidentate dithiol

Abstract: Oligomerization of atomically-precise clusters leads to enhancements of their nonlinear optical performance (9000 GM for monomers, 66 000 GM for trimers).

Cited by 2 publications

References 37 publications

Two-Photon and Three-Photon Circular Dichroism of Au₃₈ Gold Nanoclusters Enantiomers

Two-Photon and Three-Photon Circular Dichroism of Au₃₈ Gold Nanoclusters Enantiomers

A comprehensive review of atomically precise metal nanoclusters with emergent photophysical properties towards diverse applications

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Enhanced nonlinear optical properties of Au25 nanocluster oligomers linked by bidentate dithiol

Abstract: Oligomerization of atomically-precise clusters leads to enhancements of their nonlinear optical performance (9000 GM for monomers, 66 000 GM for trimers).

Cited by 2 publications

References 37 publications

Two-Photon and Three-Photon Circular Dichroism of Au38 Gold Nanoclusters Enantiomers

Two-Photon and Three-Photon Circular Dichroism of Au38 Gold Nanoclusters Enantiomers

A comprehensive review of atomically precise metal nanoclusters with emergent photophysical properties towards diverse applications

Contact Info

Product

Resources

About

Enhanced nonlinear optical properties of Au₂₅ nanocluster oligomers linked by bidentate dithiol

Two-Photon and Three-Photon Circular Dichroism of Au₃₈ Gold Nanoclusters Enantiomers

Two-Photon and Three-Photon Circular Dichroism of Au₃₈ Gold Nanoclusters Enantiomers