| アイテムタイプ |
itemtype_ver1(1) |
| 公開日 |
2025-09-19 |
| タイトル |
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タイトル |
Size- and Shape-Dependent Separation of Multinary Quantum Dots with Plasmonic Thin-Layer Chromatography |
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言語 |
en |
| 著者 |
Akiyoshi, Kazutaka
Maeda, Yui
Yamaguchi, Naoko
Kameyama, Tatsuya
Tsuboi, Yasuyuki
Yamane, Hidemasa
Ishihara, Hajime
Torimoto, Tsukasa
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| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利 |
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権利情報 |
This document is the Accepted Manuscript version of a Published Work that appeared in final form in [The Journal of Physical Chemistry C], copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see [https://pubs.acs.org/articlesonrequest/AOR-ZRMKHKMAPKKUGPWEX6FB].” |
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言語 |
en |
| 内容記述 |
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内容記述タイプ |
Abstract |
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内容記述 |
Quantum dots (QDs) have attracted much attention due to their unique physicochemical properties depending on the size and shape of particles. Enhancing the performance of these QDs requires achieving a uniform morphology and narrowing their size distribution. Recently, we successfully developed plasmonic thin-layer chromatography (TLC) as a technique for nanoparticle (NP) separation, in which QDs were optically captured through the photoexcitation of Au NPs immobilized on TLC plates. Here, we report the size separation of rod-shaped Zn–Ag–In–S (ZAIS) QDs with different lengths (16–31 nm) but with a constant width (ca. 4 nm). An irradiation of 820 nm monochromatic light photoexcited a localized surface plasmon resonance peak of Au NPs immobilized on TLC plates, resulting in optical trapping of rod-shaped ZAIS QDs within the Au NP-immobilized region, in which the minimum length of trapped QDs became shorter with an increase in irradiation intensity. Based on this behavior, we separated polydisperse rod QDs into two groups of QDs having different lengths with a relatively narrow distribution. Ellipsoidal ZAIS QDs with lengths of 8–19 nm were also prepared. The energy gap of those QDs was constant at 1.9 eV, regardless of the QD length, being much smaller than the energy gaps of rod-shaped ZAIS QDs, 2.6–3.1 eV. When comparing the two types of QDs with different shapes but similar lengths, we observed that the threshold irradiation intensity required for QD trapping was lower for ellipsoidal particles than that for rod-shaped ones. To explain this behavior, we conducted theoretical simulations, which revealed that the optical forces (attractive forces) between ZAIS QDs and Au NPs were modulated by variations in the polarizability of QDs. The variations originated from changes in both particle volume and optical properties. These results provided valuable knowledge about the influence of size, shape, and optical properties on the QD separation process with plasmonic TLC. |
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言語 |
en |
| 出版者 |
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出版者 |
ACS Publications |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプresource |
http://purl.org/coar/resource_type/c_6501 |
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タイプ |
journal article |
| 出版タイプ |
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出版タイプ |
AM |
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出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| 関連情報 |
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関連タイプ |
isVersionOf |
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識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1021/acs.jpcc.3c06531 |
| 収録物識別子 |
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収録物識別子タイプ |
PISSN |
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収録物識別子 |
1932-7447 |
| 書誌情報 |
en : The Journal of Physical Chemistry C
巻 128,
号 2,
p. 908-918,
発行日 2024-01-18
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20231217_jp-2023-06531f_revised_Main_text_marked.pdf (1.1 MB)
