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Impact of Enantiomeric Ligand Composition on the Photophysical Properties of Chiral Ag29 Nanoclusters

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dc.contributor.author Yoshida, Hiroto
dc.contributor.author Kumar, Jatish
dc.contributor.author Ehara, Masahiro
dc.contributor.author Okajima, Yasuo
dc.contributor.author Asanoma, Fumio
dc.contributor.author Kawai, Tsuyoshi
dc.contributor.author Nakashima, Takuya
dc.date.accessioned 2020-09-07T07:40:45Z
dc.date.available 2020-09-07T07:40:45Z
dc.date.issued 2020-04-14
dc.identifier.uri http://hdl.handle.net/10061/14048
dc.description.abstract Chiral surface ligands have often been employed to impart optical activity to metal nanoclusters, metal nanoparticles and semiconductor nanocrystals. They are considered to form a chiral structure to a certain degree whereas the effect of such chiral structure on the global physicochemical properties apart from chiroptical ones has been unexplored. We herein demonstrate the impact of optical purity of chiral surface ligand on the emission property of silver nanocluster (NCs). Chiral bidentate α-dihydrolipoic acid (DHLA) with varied enantiomeric excess (ee) values was employed as a surface capping ligand to prepare a series of silver NCs, displaying identical absorption and emission profiles typical for Ag29 NCs. Interestingly, the emission quantum yields exhibited a clear dependence on the enantiopurity of DHLA. The more enantiopure DHLA afforded more emissive NCs. This |ee|-dependent emission efficiency was discussed in association with the orientation of ligands on the Ag29 NCs. The surface structures of Ag29(dithiolate)12 models composed of enantiopure and racemic ligand systems were compared with the aid of DFT calculations, suggesting that the enantiopure surface is more stable with one-handed ligand orientation. Two-dimensional NMR technique also supported the observation that well-defined ligand orientations depend on the enantiomeric composition of chiral ligand. ja_JP
dc.language.iso en ja_JP
dc.publisher The Chemical Society of Japan ja_JP
dc.relation.isreplacedby https://www.journal.csj.jp/doi/full/10.1246/bcsj.20200089 ja_JP
dc.rights © 2020 The Chemical Society of Japan ja_JP
dc.subject Chiral nanocluster ja_JP
dc.subject Photoluminescence ja_JP
dc.subject Ligand-ligand interaction ja_JP
dc.title Impact of Enantiomeric Ligand Composition on the Photophysical Properties of Chiral Ag29 Nanoclusters ja_JP
dc.type.nii Journal Article ja_JP
dc.contributor.transcription ヨシダ, ヒロト
dc.contributor.transcription オカジマ, ヤスオ
dc.contributor.transcription アサノマ, フミオ
dc.contributor.transcription カワイ, ツヨシ
dc.contributor.transcription ナカシマ, タクヤ
dc.contributor.alternative 吉田, 裕斗
dc.contributor.alternative 岡島, 康雄
dc.contributor.alternative 浅野間, 文夫
dc.contributor.alternative 河合, 壯
dc.contributor.alternative 中嶋, 琢也
dc.textversion none ja_JP
dc.identifier.jtitle Bulletin of the Chemical Society of Japan ja_JP
dc.identifier.volume 93 ja_JP
dc.identifier.issue 7 ja_JP
dc.identifier.spage 834 ja_JP
dc.identifier.epage 840 ja_JP
dc.relation.doi 10.1246/bcsj.20200089 ja_JP
dc.identifier.NAIST-ID 85625960 ja_JP
dc.identifier.NAIST-ID 73291353 ja_JP
dc.identifier.NAIST-ID 73291098 ja_JP
dc.identifier.NAIST-ID 73293342 ja_JP
dc.identifier.NAIST-ID 73293359 ja_JP


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