Volume 136, Issue 1 e202314329
Forschungsartikel

One-Dimensionally Arranged Quantum-Dot Superstructures Guided by a Supramolecular Polymer Template

Dr. Mitsuaki Yamauchi

Corresponding Author

Dr. Mitsuaki Yamauchi

Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto, 611-0011 Japan

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Kanako Nakatsukasa

Kanako Nakatsukasa

Department of Applied Chemistry for Environment, Kwansei Gakuin University, 1 Gakuen, Uegahara, Sanda, Hyogo, 669-1330 Japan

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Naoki Kubo

Naoki Kubo

Department of Applied Chemistry for Environment, Kwansei Gakuin University, 1 Gakuen, Uegahara, Sanda, Hyogo, 669-1330 Japan

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Prof. Dr. Hiroko Yamada

Prof. Dr. Hiroko Yamada

Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto, 611-0011 Japan

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Prof. Dr. Sadahiro Masuo

Corresponding Author

Prof. Dr. Sadahiro Masuo

Department of Applied Chemistry for Environment, Kwansei Gakuin University, 1 Gakuen, Uegahara, Sanda, Hyogo, 669-1330 Japan

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First published: 20 November 2023
Citations: 1

Abstract

Colloidal quantum dots (QDs) exhibit important photophysical properties, such as long-range energy diffusion, miniband formation, and collective photoluminescence, when aggregated into well-defined superstructures, such as three-dimensional (3D) and two-dimensional (2D) superlattices. However, the construction of one-dimensional (1D) QD superstructures, which have a simpler arrangement, is challenging; therefore, the photophysical properties of 1D-arranged QDs have not been studied previously. Herein, we report a versatile strategy to obtain 1D-arranged QDs using a supramolecular polymer (SP) template. The SP is composed of self-assembling cholesterol derivatives containing two amide groups for hydrogen bonding and a carboxyl group as an adhesion moiety on the QDs. Upon mixing the SP and dispersed QDs in low-polarity solvents, the QDs self-adhered to the SP and self-arranged into 1D superstructures through van der Waals interactions between the surface organic ligands of the QDs, as confirmed by transmission electron microscopy. Furthermore, we revealed efficient photoinduced fluorescence resonance energy transfer between the 1D-arranged QDs by an in-depth analysis of the emission spectra and decay curves.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the supplementary material of this article.

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