The influence of an interfacial hBN layer on the fluorescence of an organic molecule.
The influence of an interfacial hBN layer on the fluorescence of an organic molecule.
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DOI：
10.3762/bjnano.11.149
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发表时间：
2020
影响因子：
3.1
通讯作者：
Sokolowski MM
中科院分区：
文献类型：
--
作者：
Brülke C;Bauer O;Sokolowski MM
利用拉曼光谱和荧光光谱研究了单层六方氮化硼（hBN）对有机分子3，4，9，10-二萘嵌苯四甲酸二酐（PTCDA）激发态与支撑Cu（111）表面的解耦作用。PTCDA的拉曼指纹型光谱用作表面上分子存在的监测器。在18，150和18，450 cm−1之间可以检测到几条宽而弱的FL线，这些线已经从第一个单层开始。相反，来自裸Cu（111）表面上的PTCDA的FL仅从第二PTCDA层开始存在。因此，hBN的单层从金属基板上剥离PTCDA到可以发生光激发的弱辐射FL衰减的程度。不同的FL线可以归因于不同的环境的吸附位点，即分子吸附在表面缺陷，在大的有序域，并位于第二层。
We investigated the ability of a single layer of hexagonal boron nitride (hBN) to decouple the excited state of the organic molecule 3,4,9,10-perylene tetracarboxylic dianhydride (PTCDA) from the supporting Cu(111) surface by Raman and fluorescence (FL) spectroscopy. The Raman fingerprint-type spectrum of PTCDA served as a monitor for the presence of molecules on the surface. Several broad and weak FL lines between 18,150 and 18,450 cm−1 can be detected, already from the first monolayer onward. In contrast, FL from PTCDA on a bare Cu(111) surface is present only from the second PTCDA layer onward. Hence, a single layer of hBN decouples PTCDA from the metal substrate to an extent that a weak radiative FL decay of the optical excitation can occur. The different FL lines can be ascribed to different environments of the adsorption sites, namely molecules adsorbed at surface defects, in large ordered domains, and located in the second layer.
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影响因子：
8.6
作者：
GarciaVidal, FJ;Pendry, JB
通讯作者：
Pendry, JB
影响因子：
2.8
作者：
CAMPION, A;GALLO, AR;WHITMORE, PM
通讯作者：
WHITMORE, PM
影响因子：
4.4
作者：
AMBROSE, WP;BASCHE, T;MOERNER, WE
通讯作者：
MOERNER, WE
影响因子：
16.6
作者：
Falin A;Cai Q;Santos EJG;Scullion D;Qian D;Zhang R;Yang Z;Huang S;Watanabe K;Taniguchi T;Barnett MR;Chen Y;Ruoff RS;Li LH
通讯作者：
Li LH
影响因子：
3.2
作者：
Duhm, S.;Gerlach, A.;Koch, N.
通讯作者：
Koch, N.