Energy Transfer from a Perovskite Nanocrystal to Cyanine Dyes Depending on Spectral Overlap Revealed by a Single-Particle Spectroscopy

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Nano Letters Pub Date : 2025-04-03 DOI:10.1021/acs.nanolett.5c00337

Kaho Matsunaga, Issei Inoue, Seiju Koyama, Tetsuo Yamaguchi, Mitsuaki Yamauchi, Sadahiro Masuo

引用次数: 0

Abstract

Investigation of the energy transfer (ET) between perovskite nanocrystals (PNCs) and organic dyes is crucial because PNCs are suitable donor materials for creating photosensitizer systems. In this study, we investigated the relationship between a singlet ET mechanism and spectral overlap using CsPbBr₃ PNC–cyanine dyes─Cy3 and Cy5. We prepared PNC–dye linkage systems and investigated the ET at the single-PNC levels. The results of our study reveal that efficient ET occurs via fluorescence resonance ET (FRET) in the PNC–Cy3 system. Even in the PNC–Cy5 system, where the spectral overlap integral is 1 order of magnitude smaller than in the PNC–Cy3 system, efficient ET is observed, suggesting the occurrence of Dexter-type ET (DET). These results clearly demonstrate the change in the ET mechanism between FRET and DET depending on the spectral overlap. These findings are important for understanding exciton dynamics in PNC–organic molecule hybrid systems.

Abstract Image

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

从钙钛矿纳米晶体到菁染料的能量转移依赖于单粒子光谱揭示的光谱重叠

钙钛矿纳米晶体（pnc）和有机染料之间的能量转移（ET）的研究是至关重要的，因为pnc是创建光敏剂体系的合适供体材料。在这项研究中，我们利用CsPbBr3 pnc -菁染料─Cy3和Cy5，研究了单线态ET机制与光谱重叠的关系。我们制备了pnc -染料连接体系，并在单pnc水平上研究了ET。我们的研究结果表明，在PNC-Cy3体系中，有效的ET是通过荧光共振ET （FRET）发生的。即使在光谱重叠积分比PNC-Cy3小1个数量级的PNC-Cy5体系中，也能观测到有效的ET，表明存在dexter型ET （DET）。这些结果清楚地证明了FRET和DET之间的ET机制的变化取决于光谱重叠。这些发现对于理解pnc -有机分子杂化体系中的激子动力学具有重要意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.

期刊最新文献

Collective Rotation Mode in Lattice Migration under Electron Irradiation. Issue Editorial Masthead Issue Publication Information Bioinspired Janus Triboelectric Surface Enabled by Laser-Patterned Oxidation. Slow Charge Dynamics at 2D Material/Dielectric Interfaces Revealed by Multimodal Microscopy.