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Excitonic Circular Dichroism of Chiral Quantum Rods
Gao, Xiaoqing1; Zhang, Xiuwen2; Deng, Ke1; Han, Bing1; Zhao, Luyang3; Wu, Minghui4; Shi, Lin1; Lv, Jiawei1; Tang, Zhiyong1

As 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 or D-cystein 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 hand are clearly assigned to different transition polarization along 4p(z,Se) -> 5(sCd) and 4p((x,y),Se) -> 5s(Cd), respectively. This work opens the door toward comphrension and design of optically active semiconductor nanomaterials.

WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS KeywordCdse Nanocrystals ; Optical-rotation ; Semiconductor Nanocrystals ; Electronic States ; Cdte Nanocrystals ; Symmetry Rules ; Solar-cells ; Dots ; Cysteine ; Growth
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
Funding OrganizationNational Key Basic Research Program of China(2014CB931801 ; National Natural Science Foundation of China(21475029 ; Frontier Science Key Project of the Chinese Academy of Sciences(QYZDJ-SSW-SLH038) ; Instrument Developing Project of the Chinese Academy of Sciences(YZ201311) ; CAS-CSIRO Cooperative Research Program(GJHZ1503) ; K. C. Wong Education Foundation
WOS IDWOS:000404809600052
Citation statistics
Cited Times:42[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Ctr Excellence Nanosci, Natl Ctr Nanosci & Technol, Key Lab Nanosyst & Hierarch Fabricat, Beijing 100190, Peoples R China
2.Shenzhen Univ, Coll Elect Sci & Technol, Shenzhen Key Lab Micronano Photon Informat Techol, Shenzhen 518060, Guangdong, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China
4.South Univ Sci & Technol China, Dept Phys, Shenzhen 518055, Guangdong, Peoples R China
Recommended Citation
GB/T 7714
Gao, Xiaoqing,Zhang, Xiuwen,Deng, Ke,et al. Excitonic Circular Dichroism of Chiral Quantum Rods[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2017,139(25):8734-8739.
APA Gao, Xiaoqing.,Zhang, Xiuwen.,Deng, Ke.,Han, Bing.,Zhao, Luyang.,...&Tang, Zhiyong.(2017).Excitonic Circular Dichroism of Chiral Quantum Rods.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,139(25),8734-8739.
MLA Gao, Xiaoqing,et al."Excitonic Circular Dichroism of Chiral Quantum Rods".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 139.25(2017):8734-8739.
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