TY - JOUR
T1 - Photoluminescence Properties of Gold Nanorod and J-Aggregate Hybrid Systems Studied by Scanning Near-Field Optical Microscopy
AU - Hasegawa, Seiju
AU - Imura, Kohei
N1 - Funding Information:
This work was supported in part by JSPS KAKENHI grant nos. 20H02700 and 20K21179 from the Japan Society for the Promotion of Science. S.H. is grateful for the JSPS fellowship.
Publisher Copyright:
© 2022 American Chemical Society. All rights reserved.
PY - 2022/4/7
Y1 - 2022/4/7
N2 - Plasmons excited in metal nanostructures couple strongly with excitons in organic aggregates in the vicinity of the structure. The photoluminescence properties of plasmon-exciton hybrids have been studied, and peak splitting of the photoluminescence has been reported. However, the origin of the splitting is under discussion and remains to be solved. In this study, we investigate the photoluminescence properties of single-gold nanorod and J-aggregate hybrids using dark-field scattering and near-field optical microscopy. We reveal from the dark-field scattering and near-field transmission measurements that the hybrids are under a strong coupling regime. Near-field photoluminescence microscopy demonstrates that photoluminescence enhancement at the hybrid reaches more than 15-fold, and the enhancement is correlated with the reduced damping in the coupled states.
AB - Plasmons excited in metal nanostructures couple strongly with excitons in organic aggregates in the vicinity of the structure. The photoluminescence properties of plasmon-exciton hybrids have been studied, and peak splitting of the photoluminescence has been reported. However, the origin of the splitting is under discussion and remains to be solved. In this study, we investigate the photoluminescence properties of single-gold nanorod and J-aggregate hybrids using dark-field scattering and near-field optical microscopy. We reveal from the dark-field scattering and near-field transmission measurements that the hybrids are under a strong coupling regime. Near-field photoluminescence microscopy demonstrates that photoluminescence enhancement at the hybrid reaches more than 15-fold, and the enhancement is correlated with the reduced damping in the coupled states.
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U2 - 10.1021/acs.jpcc.2c00513
DO - 10.1021/acs.jpcc.2c00513
M3 - Article
AN - SCOPUS:85127679522
SN - 1932-7447
VL - 126
SP - 5944
EP - 5949
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
IS - 13
ER -