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The influence of an interfacial hBN layer on the fluorescence of an organic molecule

التفاصيل البيبلوغرافية
العنوان: The influence of an interfacial hBN layer on the fluorescence of an organic molecule
المؤلفون: Christine Brülke, Oliver Bauer, Moritz M. Sokolowski
المصدر: Beilstein Journal of Nanotechnology, Vol 11, Iss 1, Pp 1663-1684 (2020)
بيانات النشر: Beilstein-Institut, 2020.
سنة النشر: 2020
المجموعة: LCC:Technology
LCC:Chemical technology
LCC:Science
LCC:Physics
مصطلحات موضوعية: decoupling, fluorescence, hexagonal boron nitride, 3,4,9,10-perylene tetracarboxylic dianhydride (ptcda), raman spectroscopy, Technology, Chemical technology, TP1-1185, Science, Physics, QC1-999
الوصف: 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.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 2190-4286
Relation: https://doaj.org/toc/2190-4286
DOI: 10.3762/bjnano.11.149
URL الوصول: https://doaj.org/article/c58022ff4d874ceda52b205f60282e65
رقم الأكسشن: edsdoj.58022ff4d874ceda52b205f60282e65
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:21904286
DOI:10.3762/bjnano.11.149