Plasmon-Enhanced Exciton Delocalization in Squaraine-Type Molecular Aggregates.
Plasmon-Enhanced Exciton Delocalization in Squaraine-Type Molecular Aggregates.
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方酸菁型分子聚集体中等离激元增强的激子离域。
DOI:
10.1021/acsnano.1c11398
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发表时间:
2022
期刊:
影响因子:
17.1
通讯作者:
C. Lienau
中科院分区:
文献类型:
--
作者:
T. Quenzel;Daniel Timmer;Moritz Gittinger;Jennifer Zablocki;Fulu Zheng;M. Schiek;A. Lützen;T. Frauenheim;S. Tretiak;M. Silies;J. Zhong;Antonietta De Sio;C. Lienau
Enlarging exciton coherence lengths in molecular aggregates is critical for enhancing the collective optical and transport properties of molecular thin film nanostructures or devices. We demonstrate that the exciton coherence length of squaraine aggregates can be increased from 10 to 24 molecular units at room temperature when preparing the aggregated thin film on a metallic rather than a dielectric substrate. Two-dimensional electronic spectroscopy measurements reveal a much lower degree of inhomogeneous line broadening for aggregates on a gold film, pointing to a reduced disorder. The result is corroborated by simulations based on a Frenkel exciton model including exciton-plasmon coupling effects. The simulation shows that localized, energetically nearly resonant excitons on spatially well separated segments can be radiatively coupled via delocalized surface plasmon polariton modes at a planar molecule-gold interface. Such plasmon-enhanced delocalization of the exciton wave function is of high importance for improving the coherent transport properties of molecular aggregates on the nanoscale. Additionally, it may help tailor the collective optical response of organic materials for quantum optical applications.
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影响因子:
3.7
作者:
M. I. S. Röhr;H. Marciniak;J. Hoche;M. H. Schreck;H. Ceymann;R. Mitric;C. Lambert
通讯作者:
C. Lambert
影响因子:
2.1
作者:
Grupp, Alexander;Budweg, Arne;Brida, Daniele
通讯作者:
Brida, Daniele
影响因子:
16.6
作者:
通讯作者:
--
DOI:
10.1021/acs.jpcc.9b05297
发表时间:
2019-07
期刊:
The Journal of Physical Chemistry C
影响因子:
--
作者:
Chuwei Zhong;D. Bialas;C. Collison;F. Spano
通讯作者:
Chuwei Zhong;D. Bialas;C. Collison;F. Spano
DOI:
10.1063/1.5017826
发表时间:
2018
期刊:
The Journal of chemical physics
影响因子:
--
作者:
M. Luft;B. Groß;M. Schulz;A. Lützen;M. Schiek;N. Nilius
通讯作者:
N. Nilius