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Plasmonic Library Based on Substrate-Supported Gradiential Plasmonic Arrays

Title data

Müller, Mareen B. ; Kuttner, Christian ; König, Tobias A. F. ; Tsukruk, Vladimir V. ; Förster, Stephan ; Karg, Matthias ; Fery, Andreas:
Plasmonic Library Based on Substrate-Supported Gradiential Plasmonic Arrays.
In: ACS Nano. Vol. 8 (2014) Issue 9 . - pp. 9410-9421.
ISSN 1936-086X
DOI: https://doi.org/10.1021/nn503493c

Official URL: Volltext

Project information

Project financing: Deutsche Forschungsgemeinschaft
SFB840

Abstract in another language

We present a versatile approach to produce macroscopic, substrate-supported arrays of plasmonic nanoparticles with well-defined interparticle spacing and a continuous particle size gradient. The arrays thus present a “plasmonic library” of locally noncoupling plasmonic particles of different sizes, which can serve as a platform for future combinatorial screening of size effects. The structures were prepared by substrate assembly of gold-core/poly(N-isopropylacrylamide)-shell particles and subsequent post-modification. Coupling of the localized surface plasmon resonance (LSPR) could be avoided since the polymer shell separates the encapsulated gold cores. To produce a particle array with a broad range of well-defined but laterally distinguishable particle sizes, the substrate was dip-coated in a growth solution, which resulted in an overgrowth of the gold cores controlled by the local exposure time. The kinetics was quantitatively analyzed and found to be diffusion rate controlled, allowing for precise tuning of particle size by adjusting the withdrawal speed. We determined the kinetics of the overgrowth process, investigated the LSPRs along the gradient by UV–vis extinction spectroscopy, and compared the spectroscopic results to the predictions from Mie theory, indicating the absence of local interparticle coupling. We finally discuss potential applications of these substrate-supported plasmonic particle libraries and perspectives toward extending the concept from size to composition variation and screening of plasmonic coupling effects.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: PMID: 25137554
Keywords: plasmonic library; screening substrate; core/shell particles; PNIPAM; localized surface plasmon resonance; gradient assemblies; surface modification
Institutions of the University: Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Physical Chemistry I
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors > Chair Physical Chemistry I - Univ.-Prof. Dr. Stephan Förster
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Physical Chemistry II
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors > Chair Physical Chemistry II - Univ.-Prof. Dr. Andreas Fery
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Juniorprofessur Kolloidale Systeme
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors > Juniorprofessur Kolloidale Systeme - Juniorprof. Dr. Matthias Karg
Research Institutions
Research Institutions > Collaborative Research Centers, Research Unit
Research Institutions > Collaborative Research Centers, Research Unit > SFB 840 Von partikulären Nanosystemen zur Mesotechnologie
Research Institutions > EU Research Projects
Research Institutions > EU Research Projects > METAMECH - Template Assisted Assembly of Meta-Materials Using Mechanical Instabilities
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
500 Science > 540 Chemistry
Date Deposited: 17 Nov 2014 10:05
Last Modified: 21 Oct 2015 08:34
URI: https://eref.uni-bayreuth.de/id/eprint/3555