Ultrafast fluorescent decay induced by metal-mediated dipole–dipole interaction in two-dimensional molecular aggregates
Ultrafast fluorescent decay induced by metal-mediated dipole–dipole interaction in two-dimensional molecular aggregates
复制标题
二维分子聚集体中金属介导的偶极-偶极相互作用诱导的超快荧光衰减
DOI:
10.1073/pnas.1703000114
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Fang, Nicholas X.
中科院分区:
文献类型:
--
作者:
Hu, Qing;Jin, Dafei;Xiao, Jun;Nam, Sang Hoon;Liu, Xiaoze;Liu, Yongmin;Zhang, Xiang;Fang, Nicholas X.
Two-dimensional molecular aggregate (2DMA), a thin sheet of strongly interacting dipole molecules self-assembled at close distance on an ordered lattice, is a fascinating fluorescent material. It is distinctively different from the conventional (single or colloidal) dye molecules and quantum dots. In this paper, we verify that when a 2DMA is placed at a nanometric distance from a metallic substrate, the strong and coherent interaction between the dipoles inside the 2DMA dominates its fluorescent decay at a picosecond timescale. Our streak-camera lifetime measurement and interacting lattice–dipole calculation reveal that the metal-mediated dipole–dipole interaction shortens the fluorescent lifetime to about one-half and increases the energy dissipation rate by 10 times that expected from the noninteracting single-dipole picture. Our finding can enrich our understanding of nanoscale energy transfer in molecular excitonic systems and may designate a unique direction for developing fast and efficient optoelectronic devices.
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DOI:
--
发表时间:
1990
期刊:
影响因子:
--
作者:
K. Kemnitz;K. Yoshihara;T. Tani
通讯作者:
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影响因子:
64.8
作者:
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Weitz, Martin
DOI:
--
发表时间:
1975
期刊:
影响因子:
--
作者:
M. R. Philpott;P. G. Sherman
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P. G. Sherman
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4
作者:
Novotny, L
通讯作者:
Novotny, L
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35
作者:
Vasa, Parinda;Wang, Wei;Lienau, Christoph
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Lienau, Christoph