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dc.contributor.authorGao, Xiaoqing
dc.contributor.authorZhang, Xiuwen
dc.contributor.authorDeng, Ke
dc.contributor.authorHan, Bing
dc.contributor.authorZhao, Luyang
dc.contributor.authorWu, Minghui
dc.contributor.authorShi, Lin
dc.contributor.authorLv, Jiawei
dc.contributor.authorTang, Zhiyong
dc.date.accessioned2021-08-23T06:17:50Z
dc.date.available2021-08-23T06:17:50Z
dc.date.issued2017
dc.identifier.issn0002-7863
dc.identifier.doi10.1021/jacs.7b04224
dc.identifier.urihttp://hdl.handle.net/10072/407198
dc.description.abstractAs an emerging type of optically active materials, chiral molecules-stabilized semiconductor quantum dots (QDs) have achieved extensive attention. Unfortunately, understanding of the optical characteristics of chiral QDs observed by circular dichroism (CD) spectroscopy remains a great challenge due to their rather weak signals. Herein, we successfully achieve much enhanced CD responses from l- or d-cysteine-stabilized wurtzite CdSe quantum rods (QRs) thanks to their unique optical anisotropy. Furthermore, the optical activity of CdSe QRs is explored to be improved and subsequently become stable with the geometrical aspect ratio (AR) increasing, and such change matches well with alternation of the polarization factor of CdSe QRs. A non-degenerate coupled-oscillator (NDCO) model is established to elucidate the optical activity of chiral QRs, and the positive and negative natures of the CD peaks appearing at the first exciton band are clearly assigned to different transition polarization along 4pz,Se → 5sCd and 4p(x,y),Se → 5sCd, respectively. This work opens the door toward comprehension and design of optically active semiconductor nanomaterials.
dc.description.peerreviewedYes
dc.languageEnglish
dc.publisherAMER CHEMICAL SOC
dc.relation.ispartofpagefrom8734
dc.relation.ispartofpageto8739
dc.relation.ispartofissue25
dc.relation.ispartofjournalJournal of the American Chemical Society
dc.relation.ispartofvolume139
dc.subject.fieldofresearchChemical sciences
dc.subject.fieldofresearchcode34
dc.subject.keywordsScience & Technology
dc.subject.keywordsPhysical Sciences
dc.subject.keywordsChemistry, Multidisciplinary
dc.subject.keywordsChemistry
dc.subject.keywordsCdSe Nanocrystals
dc.titleExcitonic Circular Dichroism of Chiral Quantum Rods
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationGao, X; Zhang, X; Deng, K; Han, B; Zhao, L; Wu, M; Shi, L; Lv, J; Tang, Z, Excitonic Circular Dichroism of Chiral Quantum Rods, Journal of the American Chemical Society, 2017, 139 (25), pp. 8734-8739
dc.date.updated2021-08-23T06:14:50Z
gro.hasfulltextNo Full Text
gro.griffith.authorTang, Zhiyong


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