Exceptional Two-Photon Absorption in Alkynylruthenium-Gold Nanoparticle Hybrids

Cristóbal Quintana; Mahbod Morshedi; Huan Wang; Jun Du; Marie P. Cifuentes; Mark G. Humphrey

doi:10.1021/acs.nanolett.8b03825

Exceptional Two-Photon Absorption in Alkynylruthenium-Gold Nanoparticle Hybrids

Cristóbal Quintana, Mahbod Morshedi, Huan Wang, Jun Du, Marie P. Cifuentes, Mark G. Humphrey^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

Ruthenium alkynyl "star"complexes with tri(2-thienyl)-, tris(1,2,3-triazolyl)-, or triphenyl-benzene cores stabilize gold nanoparticles (AuNPs). Cyclic voltammetry, transmission electron microscopy, molecular modeling, dynamic light scattering, X-ray photoelectron spectroscopy, and energy-dispersive X-ray spectroscopy studies are consistent with ca. 5 trithienyl- or triazolyl-benzene-cored star complexes decorating the exterior of each AuNP. The ca. 2.5 nm diameter (by transmission electron microscopy) trithienylbenzene-cored gold nanoparticle hybrids are significantly less absorbent than classical Brust nanoparticles stabilized by 1-dodecanethiol; with femtosecond pulsed radiation, they exhibit exceptionally strong saturable absorption and two-photon absorption across the visible range and into the near-infrared region (3 000 000 GM at 500 nm and 46 000 GM at 750 nm; 1 GM is equal to 10-50 cm4 s photon-1).

Original language	English
Pages (from-to)	756-760
Number of pages	5
Journal	Nano Letters
Volume	19
Issue number	2
DOIs	https://doi.org/10.1021/acs.nanolett.8b03825
Publication status	Published - 13 Feb 2019

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title = "Exceptional Two-Photon Absorption in Alkynylruthenium-Gold Nanoparticle Hybrids",

abstract = "Ruthenium alkynyl {"}star{"}complexes with tri(2-thienyl)-, tris(1,2,3-triazolyl)-, or triphenyl-benzene cores stabilize gold nanoparticles (AuNPs). Cyclic voltammetry, transmission electron microscopy, molecular modeling, dynamic light scattering, X-ray photoelectron spectroscopy, and energy-dispersive X-ray spectroscopy studies are consistent with ca. 5 trithienyl- or triazolyl-benzene-cored star complexes decorating the exterior of each AuNP. The ca. 2.5 nm diameter (by transmission electron microscopy) trithienylbenzene-cored gold nanoparticle hybrids are significantly less absorbent than classical Brust nanoparticles stabilized by 1-dodecanethiol; with femtosecond pulsed radiation, they exhibit exceptionally strong saturable absorption and two-photon absorption across the visible range and into the near-infrared region (3 000 000 GM at 500 nm and 46 000 GM at 750 nm; 1 GM is equal to 10-50 cm4 s photon-1).",

keywords = "Gold nanoparticles, inorganic materials, metal alkynyl complexes, nonlinear optics, organometallics",

author = "Crist{\'o}bal Quintana and Mahbod Morshedi and Huan Wang and Jun Du and Cifuentes, {Marie P.} and Humphrey, {Mark G.}",

note = "Publisher Copyright: Copyright {\textcopyright} 2019 American Chemical Society.",

year = "2019",

month = feb,

day = "13",

doi = "10.1021/acs.nanolett.8b03825",

language = "English",

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T1 - Exceptional Two-Photon Absorption in Alkynylruthenium-Gold Nanoparticle Hybrids

AU - Quintana, Cristóbal

AU - Morshedi, Mahbod

AU - Wang, Huan

AU - Du, Jun

AU - Cifuentes, Marie P.

AU - Humphrey, Mark G.

PY - 2019/2/13

Y1 - 2019/2/13

N2 - Ruthenium alkynyl "star"complexes with tri(2-thienyl)-, tris(1,2,3-triazolyl)-, or triphenyl-benzene cores stabilize gold nanoparticles (AuNPs). Cyclic voltammetry, transmission electron microscopy, molecular modeling, dynamic light scattering, X-ray photoelectron spectroscopy, and energy-dispersive X-ray spectroscopy studies are consistent with ca. 5 trithienyl- or triazolyl-benzene-cored star complexes decorating the exterior of each AuNP. The ca. 2.5 nm diameter (by transmission electron microscopy) trithienylbenzene-cored gold nanoparticle hybrids are significantly less absorbent than classical Brust nanoparticles stabilized by 1-dodecanethiol; with femtosecond pulsed radiation, they exhibit exceptionally strong saturable absorption and two-photon absorption across the visible range and into the near-infrared region (3 000 000 GM at 500 nm and 46 000 GM at 750 nm; 1 GM is equal to 10-50 cm4 s photon-1).

AB - Ruthenium alkynyl "star"complexes with tri(2-thienyl)-, tris(1,2,3-triazolyl)-, or triphenyl-benzene cores stabilize gold nanoparticles (AuNPs). Cyclic voltammetry, transmission electron microscopy, molecular modeling, dynamic light scattering, X-ray photoelectron spectroscopy, and energy-dispersive X-ray spectroscopy studies are consistent with ca. 5 trithienyl- or triazolyl-benzene-cored star complexes decorating the exterior of each AuNP. The ca. 2.5 nm diameter (by transmission electron microscopy) trithienylbenzene-cored gold nanoparticle hybrids are significantly less absorbent than classical Brust nanoparticles stabilized by 1-dodecanethiol; with femtosecond pulsed radiation, they exhibit exceptionally strong saturable absorption and two-photon absorption across the visible range and into the near-infrared region (3 000 000 GM at 500 nm and 46 000 GM at 750 nm; 1 GM is equal to 10-50 cm4 s photon-1).

KW - Gold nanoparticles

KW - inorganic materials

KW - metal alkynyl complexes

KW - nonlinear optics

KW - organometallics

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DO - 10.1021/acs.nanolett.8b03825

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SP - 756

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JO - Nano Letters

JF - Nano Letters

IS - 2

ER -

Exceptional Two-Photon Absorption in Alkynylruthenium-Gold Nanoparticle Hybrids

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