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有机量子发射器对基底和聚合物薄膜的意外污染。

Accidental Contamination of Substrates and Polymer Films by Organic Quantum Emitters.

作者信息

Neumann Andre, Lindlau Jessica, Thoms Stefan, Basché Thomas, Högele Alexander

机构信息

Fakultät für Physik, Munich Quantum Center, and Center for NanoScience (CeNS) , Ludwig-Maximilians-Universität München , Geschwister-Scholl-Platz 1 , 80539 München , Germany.

Institut für Physikalische Chemie, Johannes Gutenberg-Universität Mainz , Duesbergweg 10-14 , 55128 Mainz , Germany.

出版信息

Nano Lett. 2019 May 8;19(5):3207-3213. doi: 10.1021/acs.nanolett.9b00712. Epub 2019 Apr 23.

DOI:10.1021/acs.nanolett.9b00712
PMID:30985126
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6542549/
Abstract

We report the observation of ubiquitous contamination of dielectric substrates and poly(methyl methacrylate) matrices by organic molecules with optical transitions in the visible spectral range. Contamination sites of individual solvent-related fluorophores in thin films of poly(methyl methacrylate) constitute fluorescence hotspots with quantum emission statistics and quantum yields approaching 30% at cryogenic temperatures. Our findings not only resolve prevalent puzzles in the assignment of spectral features to various nanoemitters on bare dielectric substrates or in polymer matrices but also identify the means for the simple and cost-efficient realization of single-photon sources in the visible spectral range.

摘要

我们报告了在介电基板和聚甲基丙烯酸甲酯基质中普遍存在有机分子污染的观察结果，这些有机分子在可见光谱范围内具有光学跃迁。聚甲基丙烯酸甲酯薄膜中与溶剂相关的单个荧光团的污染位点构成了荧光热点，在低温下其量子发射统计和量子产率接近30%。我们的发现不仅解决了将光谱特征分配给裸介电基板或聚合物基质上各种纳米发射器时普遍存在的难题，还确定了在可见光谱范围内简单且经济高效地实现单光子源的方法。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/39a6/6542549/3cd570aa0c54/nl-2019-007127_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/39a6/6542549/e6c2290f520b/nl-2019-007127_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/39a6/6542549/47a46de9420a/nl-2019-007127_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/39a6/6542549/34dba4010daa/nl-2019-007127_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/39a6/6542549/c1fbfd1b94b5/nl-2019-007127_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/39a6/6542549/3cd570aa0c54/nl-2019-007127_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/39a6/6542549/e6c2290f520b/nl-2019-007127_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/39a6/6542549/47a46de9420a/nl-2019-007127_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/39a6/6542549/34dba4010daa/nl-2019-007127_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/39a6/6542549/c1fbfd1b94b5/nl-2019-007127_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/39a6/6542549/3cd570aa0c54/nl-2019-007127_0005.jpg

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