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Novel Pathways for Enhancing Nonlinearity of Organics Utilizing Metal Clusters
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- Rinkevicius, Zilvinas (författare)
- KTH,Teoretisk kemi
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Autschbach, Jochen (författare)
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Baev, Alexander (författare)
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Swihart, Mark (författare)
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- Ågren, Hans (författare)
- KTH,Teoretisk kemi
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Prasad, Paras N. (författare)
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(creator_code:org_t)
- 2010-06-29
- 2010
- Engelska.
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Ingår i: Journal of Physical Chemistry A. - : American Chemical Society (ACS). - 1089-5639 .- 1520-5215. ; 114:28, s. 7590-7594
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We show that ultrasmall metallic nanoparticles can be combined with large second- and third-order response organic chromophores to enhance the overall third-order response of the system. This approach can be used in combination with microscopic cascading to generate exceptionally large third-order response. Intermolecular charge-transfer coupling between the molecules and the metal clusters enhances the real part of the nonlinearity at telecommunication wavelengths, while avoiding plasmonic enhancement of one- and two-photon absorption, and minimizing optical losses. The results of density functional calculations for a molecule with large second-order response, (para)nitroaniline, show that use of a gold cluster as a link between molecular entities enhances third-order nonlinearity. Varying size and shape of the metal cluster as well as the distance between the clusters and the molecules allows fine-tuning of nonlinear response over a large range of magnitudes.
Ämnesord
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Nyckelord
- ABSORPTION
- AU-20
- Physical chemistry
- Fysikalisk kemi
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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