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Efficient Second-Harmonic Generation from Molecular Monolayers

delete2026-05-01
delete0
PRE
AI
R
Ruggero Emmanuele
J
Jia‐Shiang Chen
H
Hiroaki Sai
S
Seok Daniel Namgung
D
David J. Gosztola
Y
Yuguo Wang
Jun Lou 封面图
Jun Lou (Jun Lou)
S
Samuel I. Stupp
M
Mark C. Hersam
X
Xuedan Ma *
DOI：10.1021/acsnano.6c00996delete
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摘要

摘要

En 中文
有机非线性光学（NLO）材料为与通信和计算技术相关的柔性光子和光电子学的高密度集成提供了极好的机会。如今，大多数有机NLO材料依赖于NLO分子中的永久偶极矩，这需要复杂的非对称分子结构、键合方案和对齐过程。这里，我们报道了一种由基本发色团自组装形成的超分子纳米结构中观察到高效二次谐波产生（SHG）。通过结合偏振依赖的SHG测量、瞬态吸收光谱学和蒙特卡罗模拟，我们确定SHG的来源是纳米结构中与电荷转移态相关的光诱导瞬态偶极矩。这些发现突显了通过利用光诱导瞬态效应来利用广泛类别的有机分子组装体的NLO响应的机会。
Keyword:
second-harmonic generation
nonlinear susceptibility
supramolecular nanostructure
charge-transfer state
optical transition dipole

期刊

ACS Nano 封面图
ACS Nano
IF:
16
论文数:
2.7W
被引数:
25.6W

机构

R
Rice University
学者数:
1.4W
论文数: 1.2W
被引数: 2.6W
U
united states department of energy (doe)
学者数:
11.3W
论文数: 9.6W
被引数: 246
A
argonne national laboratory
学者数:
960
论文数: 370
被引数: 0
N
Northwestern University
学者数:
6.2W
论文数: 5.3W
被引数: 3.9K
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