51
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52
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He T, Qiu X, Li J, Pang G, Wu Z, Cheng J, Zhou Z, Hao J, Liu H, Ni Y, Li L, Lin X, Hu W, Wang K, Chen R. Water-soluble chiral CdSe/CdS dot/rod nanocrystals for two-photon fluorescence lifetime imaging and photodynamic therapy. NANOSCALE 2019; 11:15245-15252. [PMID: 31385580 DOI: 10.1039/c9nr04508b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Compared with traditional organic contrast agents, semiconductor nanocrystals (NCs) have unique optical properties that are vital for biological applications with ultrahigh sensitivities, such as long fluorescence lifetime and large multiphoton absorption (MPA). However, the MPA properties and biological applications of chiral-ligand-stabilized semiconductor NCs have scarcely been reported, which seriously hinders their relevant applications. In this work, we report the aqueous phase transfer of CdSe/CdS dot/rod NCs with the use of cysteine molecules, after which the NCs preserve their high fluorescence quantum yield, long lifetime, and efficient circular dichroism. More importantly, the investigated dot/rod NCs show extremely large two- and three-photon absorption action cross-sections in the first and second biological windows, with maximum values of ∼21 000 GM at 800 nm and ∼4.6 × 10-78 cm6 s2 per photon2 at 1300 nm, which are among the largest values reported for water-soluble fluorescent nanoparticles. Interestingly, the dot/rod NCs exhibit a high singlet oxygen generation efficiency of 35%. In addition, for the first time, two-photon fluorescence lifetime imaging and photodynamic therapy of the dot/rod NCs were successfully demonstrated. The performed investigation of the optical properties of these water-soluble CdSe/CdS dot/rod NCs indicates that they are promising candidates for nonlinear biological imaging applications.
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Affiliation(s)
- Tingchao He
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
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53
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Gao X, Han B, Yang X, Tang Z. Perspective of Chiral Colloidal Semiconductor Nanocrystals: Opportunity and Challenge. J Am Chem Soc 2019; 141:13700-13707. [DOI: 10.1021/jacs.9b05973] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Xiaoqing Gao
- CAS Key Laboratory
of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence
in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, People’s Republic of China
- College of Physics and Optoelectronic Engineering, Shenzhen University, Guangdong 518060, People’s Republic of China
| | - Bing Han
- North China Power Electric University, Beijing 102206, People’s Republic of China
| | - Xuekang Yang
- CAS Key Laboratory
of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence
in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, People’s Republic of China
| | - Zhiyong Tang
- CAS Key Laboratory
of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence
in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, People’s Republic of China
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54
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Kartouzian A. Spectroscopy for model heterogeneous asymmetric catalysis. Chirality 2019; 31:641-657. [PMID: 31318108 DOI: 10.1002/chir.23113] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 07/02/2019] [Indexed: 12/31/2022]
Abstract
Heterogeneous catalysis has vastly benefited from investigations performed on model systems under well-controlled conditions. The application of most of the techniques utilized for such studies is not feasible for asymmetric reactions as enantiomers possess identical physical and chemical properties unless while interacting with polarized light and other chiral entities. A thorough investigation of a heterogeneous asymmetric catalytic process should include probing the catalyst prior to, during, and after the reaction as well as the analysis of reaction products to evaluate the achieved enantiomeric excess. I present recent studies that demonstrate the strength of chiroptical spectroscopic methods to tackle the challenges in investigating model heterogeneous asymmetric catalysis covering all the abovementioned aspects.
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Affiliation(s)
- Aras Kartouzian
- Lehrstuhl für physikalische Chemie, Catalysis Research Center, Technische Universität München, Garching bei München, Germany
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55
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Li W, Xu M, Ma C, Liu Y, Zhou J, Chen Z, Wang Y, Yu H, Li J, Liu S. Tunable Upconverted Circularly Polarized Luminescence in Cellulose Nanocrystal Based Chiral Photonic Films. ACS APPLIED MATERIALS & INTERFACES 2019; 11:23512-23519. [PMID: 31252503 DOI: 10.1021/acsami.9b05941] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Integrating chromophores into chiral photonic crystals to fabricate materials that exhibit circularly polarized luminescence (CPL) is promising as this method allows efficient manipulation of the spontaneous emission within photonic bandgaps (PBGs). However, tuning the wavelength of CPL and the dissymmetry factor ( glum) in a convenient and accurate manner remains a significant challenge. Here, right-handed, tunable upconverted CPL (UC-CPL) emission was achieved by integrating multiple emissive, upconverting nanoparticles into cellulose nanocrystal based chiral photonic films that had tunable PBGs. Glycerol was used to tune the PBGs of the chiral photonic films, which yielded tunable UC-CPL emission at 450 and 620 nm with a tailored glum. Moreover, humidity responsive UC-CPL at blue wavelength was obtained from glycerol-composite photonic film, with a glum that ranged from -0.156 to -0.033. It was possible because the PBG and chirality of photonic composite was responded to the relative humidity. This work gives valuable insight into tunable and stimuli-responsive CPL photonic systems.
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Affiliation(s)
- Wei Li
- Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education , Northeast Forestry University , Harbin 150040 , China
| | - Mingcong Xu
- Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education , Northeast Forestry University , Harbin 150040 , China
| | - Chunhui Ma
- Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education , Northeast Forestry University , Harbin 150040 , China
| | - Yushan Liu
- Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education , Northeast Forestry University , Harbin 150040 , China
| | - Jin Zhou
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication , National Center for Nanoscience and Technology (NCNST) , Beijing 100190 , China
| | - Zhijun Chen
- Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education , Northeast Forestry University , Harbin 150040 , China
| | - Yonggui Wang
- Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education , Northeast Forestry University , Harbin 150040 , China
| | - Haipeng Yu
- Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education , Northeast Forestry University , Harbin 150040 , China
| | - Jian Li
- Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education , Northeast Forestry University , Harbin 150040 , China
| | - Shouxin Liu
- Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education , Northeast Forestry University , Harbin 150040 , China
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56
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Chen W, Zhang S, Zhou M, Zhao T, Qin X, Liu X, Liu M, Duan P. Two-Photon Absorption-Based Upconverted Circularly Polarized Luminescence Generated in Chiral Perovskite Nanocrystals. J Phys Chem Lett 2019; 10:3290-3295. [PMID: 31146530 DOI: 10.1021/acs.jpclett.9b01224] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Upconverted circularly polarized luminescence (UCPL) processes have attracted great interest, because the chiroptical properties could be expressed in different photophysical processes. In this Letter, the first example of two-photon absorption-based upconverted circularly polarized luminescence (TP-UCPL) is demonstrated. The chiral α-octylamine-modified cesium lead bromides perovskite nanocrystals exhibited TP-UCPL with a two-photon absorption cross section at 800 nm (σ2,800 nm) up to 3.68 × 104 GM and luminescence dissymmetric factor ( glum) up to 7.0 × 10-3. Depending on the molecular chirality of the capping ligands, the TP-UCPL sense can be selected and the mirror-imaged CPL is obtained. It is envisaged that this approach will afford a new viewpoint for designing UCPL processes.
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Affiliation(s)
- Wenjie Chen
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics , Institute of Chemistry, Chinese Academy of Sciences , No. 2 ZhongGuanCun BeiYiJie , 100190 Beijing , P.R. China
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication , National Center for Nanoscience and Technology (NCNST) , No. 11 ZhongGuanCun BeiYiTiao , 100190 Beijing , P.R. China
- University of Chinese Academy of Sciences , Beijing 100049 , P.R. China
| | - Shuai Zhang
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Standardization and Measurement for Nanotechnology , National Center for Nanoscience and Technology (NCNST) , No. 11 ZhongGuanCun BeiYiTiao , 100190 Beijing , P.R. China
- University of Chinese Academy of Sciences , Beijing 100049 , P.R. China
| | - Minghao Zhou
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication , National Center for Nanoscience and Technology (NCNST) , No. 11 ZhongGuanCun BeiYiTiao , 100190 Beijing , P.R. China
| | - Tonghan Zhao
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication , National Center for Nanoscience and Technology (NCNST) , No. 11 ZhongGuanCun BeiYiTiao , 100190 Beijing , P.R. China
- University of Chinese Academy of Sciences , Beijing 100049 , P.R. China
| | - Xujin Qin
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication , National Center for Nanoscience and Technology (NCNST) , No. 11 ZhongGuanCun BeiYiTiao , 100190 Beijing , P.R. China
| | - Xinfeng Liu
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Standardization and Measurement for Nanotechnology , National Center for Nanoscience and Technology (NCNST) , No. 11 ZhongGuanCun BeiYiTiao , 100190 Beijing , P.R. China
- University of Chinese Academy of Sciences , Beijing 100049 , P.R. China
| | - Minghua Liu
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics , Institute of Chemistry, Chinese Academy of Sciences , No. 2 ZhongGuanCun BeiYiJie , 100190 Beijing , P.R. China
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication , National Center for Nanoscience and Technology (NCNST) , No. 11 ZhongGuanCun BeiYiTiao , 100190 Beijing , P.R. China
- University of Chinese Academy of Sciences , Beijing 100049 , P.R. China
| | - Pengfei Duan
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication , National Center for Nanoscience and Technology (NCNST) , No. 11 ZhongGuanCun BeiYiTiao , 100190 Beijing , P.R. China
- University of Chinese Academy of Sciences , Beijing 100049 , P.R. China
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57
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Wang X, Hao J, Cheng J, Li J, Miao J, Li R, Li Y, Li J, Liu Y, Zhu X, Liu Y, Sun XW, Tang Z, Delville MH, He T, Chen R. Chiral CdSe nanoplatelets as an ultrasensitive probe for lead ion sensing. NANOSCALE 2019; 11:9327-9334. [PMID: 30911741 DOI: 10.1039/c8nr10506e] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
As opposed to traditional photoluminescence and ultra-violet based optical sensing, we present here a sensing system based on resolved optically active polarization with promising applications. It is based on the ultrathin CdSe nanoplatelets (NPLs) when modified with either l or d-cysteine molecules (l/d-cys) as bio-to-nano ligands. The chiral ligand transfers its chiroptical activity to the achiral nanoplatelets with an anisotropy factor of ∼10-4, which unlocks the chiral excitonic transitions and allows lead ion detection with a limit of detection (LOD) as low as 4.9 nM. Simulations and modelling based on time-dependent density functional theory (TD-DFT) reveal the chiral mechanism of l/d-cys capped CdSe NPLs. The presented CD-based sensing system illustrates an alternative possibility of using chiral CdSe NPLs as competitive chiral sensors for heavy metal ion detection.
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Affiliation(s)
- Xiongbin Wang
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, P. R. China.
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58
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Shao X, Zhang T, Li B, Zhou M, Ma X, Wang J, Jiang S. Chiroptical Activity of Type II Core/Shell Cu 2S/CdSe Nanocrystals. Inorg Chem 2019; 58:6534-6543. [PMID: 31007027 DOI: 10.1021/acs.inorgchem.9b00769] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Ligand-induced chirality in core/shell nanocrystals (NCs) has attracted extensive attention because of many valuable potential applications. However, the cause of chirality especially in semiconductor nanomaterials is still under debate despite the creation of chiral type I core/shell structures. Herein, we synthesized a kind of new Cu2S/CdSe core/shell nanostructure to study the underlying reason. Four samples of Cu2S/CdSe were synthesized utilizing successive ion layer adsorption and reaction to vary the thickness of the CdSe shell upon a Cu2S core with 5 nm diameter. The chirality of type II Cu2S/CdSe NCs is imparted by l-/d-cysteine and penicillamine, which could be modulated with an increasing thickness of the CdSe shell. To the best of our knowledge, this is the first report of chiral type II core/shell semiconductor NCs. The hybridization theory can explain the variation trend of g factors with every increase in shell thickness from four monolayers (4 ML) to 7 ML. The results indicate that the chiroptical activity of semiconductor NCs is mainly due to hybridization between the holes in the valence band of NCs and the highest occupied molecular orbitals of the chiral ligands. In addition, Cu2S/CdSe NCs show a better chiroptical intensity in comparison with the type I structure according to previous work. The first design of chiral type II Cu2S/CdSe core/shell NCs and a detailed investigation of chiral variation trend help to give a better understanding of the chiral interaction between ligands and core/shell semiconductor nanostructures.
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Affiliation(s)
- Xiao Shao
- Tianjin Key Laboratory of Applied Catalysis Science and Technology, School of Chemical Engineering and Technology , Tianjin University , Tianjin 300354 , People's Republic of China
| | - Tianyong Zhang
- Tianjin Key Laboratory of Applied Catalysis Science and Technology, School of Chemical Engineering and Technology , Tianjin University , Tianjin 300354 , People's Republic of China.,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300072 , People's Republic of China.,Tianjin Engineering Research Center of Functional Fine Chemicals , Tianjin 300354 , People's Republic of China
| | - Bin Li
- Tianjin Key Laboratory of Applied Catalysis Science and Technology, School of Chemical Engineering and Technology , Tianjin University , Tianjin 300354 , People's Republic of China.,Tianjin Engineering Research Center of Functional Fine Chemicals , Tianjin 300354 , People's Republic of China
| | - Minghao Zhou
- Tianjin Key Laboratory of Applied Catalysis Science and Technology, School of Chemical Engineering and Technology , Tianjin University , Tianjin 300354 , People's Republic of China
| | - Xiaoyuan Ma
- Tianjin Key Laboratory of Applied Catalysis Science and Technology, School of Chemical Engineering and Technology , Tianjin University , Tianjin 300354 , People's Republic of China
| | - Jingchao Wang
- Tianjin Key Laboratory of Applied Catalysis Science and Technology, School of Chemical Engineering and Technology , Tianjin University , Tianjin 300354 , People's Republic of China
| | - Shuang Jiang
- Tianjin Key Laboratory of Applied Catalysis Science and Technology, School of Chemical Engineering and Technology , Tianjin University , Tianjin 300354 , People's Republic of China
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59
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Qiu X, Hao J, Li J, Gong Z, Li S, Cheng J, Lin X, He T. Strong multiphoton absorption in chiral CdSe/CdS dot/rod nanocrystal-doped poly(vinyl alcohol) films. OPTICS LETTERS 2019; 44:2256-2259. [PMID: 31042197 DOI: 10.1364/ol.44.002256] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 04/01/2019] [Indexed: 06/09/2023]
Abstract
Cysteine-capped cadmium selenide/cadmium sulfide (CdSe/CdS) dot/rod nanocrystals (NCs) were synthesized and then doped in poly(vinyl alcohol) (PVA) films. Compared with an L-/D-cysteine-capped NC solution (10-4), the anisotropic factors of the circular dichroism and circular polarized luminescence in the doped PVA films increased by one order of magnitude, probably because of the enhanced anisotropy degree, crystal orientations, and ordered morphologies. The two- and three-photon absorption coefficients of the doped PVA films were determined as 0.58 cm/GW at 800 nm and 2.3×10-4 cm3/GW2 at 1300 nm, respectively. The chiral NC-doped PVA films are promising for applications in chirality-related nonlinear photonic devices.
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60
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He T, Ren C, Luo Y, Wang Q, Li J, Lin X, Ye C, Hu W, Zhang J. Water-soluble chiral tetrazine derivatives: towards the application of circularly polarized luminescence from upper-excited states to photodynamic therapy. Chem Sci 2019; 10:4163-4168. [PMID: 31057744 PMCID: PMC6471655 DOI: 10.1039/c9sc00264b] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 03/07/2019] [Indexed: 12/29/2022] Open
Abstract
A new family of water-soluble chiral tetrazine derivatives 1 and 2 is reported. Spectroscopic studies reveal that the derivatives violate Kasha's rule and emit from their upper-excited states (S n , n > 1). The transition assignments are supported by time-dependent density functional theory calculations. More importantly, both chromophores exhibit anisotropy factors on the order of ∼10-3 to 10-4 for circular dichroism and circularly polarized luminescence (CPL) from upper-excited states. Additionally, the nonplanar geometry of the derivatives induces a significant yield of triplet excited states. Transient absorption spectroscopic measurements reveal high triplet quantum yields of ∼86% for 1 and ∼81% for 2. Through in vitro studies, we demonstrate that the derivatives can be used as photodynamic therapy (PDT) agents, providing a highly efficient form of cancer therapy. This study is the first demonstration of simple organic molecules with CPL from upper-excited states and efficient PDT.
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Affiliation(s)
- Tingchao He
- College of Physics and Energy , Shenzhen University , Shenzhen 518060 , China
| | - Can Ren
- College of Physics and Energy , Shenzhen University , Shenzhen 518060 , China
| | - Yu Luo
- College of Chemistry and Environmental Engineering , Shenzhen University , Shenzhen 518060 , China .
| | - Qi Wang
- Key Laboratory of Flexible Electronics (KLOFE) , Institute of Advanced Materials (IAM) , Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing Tech University (NanjingTech) , Nanjing 211816 , China .
| | - Junzi Li
- College of Physics and Energy , Shenzhen University , Shenzhen 518060 , China
| | - Xiaodong Lin
- College of Physics and Energy , Shenzhen University , Shenzhen 518060 , China
| | - Chuanxiang Ye
- College of Physics and Energy , Shenzhen University , Shenzhen 518060 , China
| | - Wenbo Hu
- Key Laboratory of Flexible Electronics (KLOFE) , Institute of Advanced Materials (IAM) , Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing Tech University (NanjingTech) , Nanjing 211816 , China .
| | - Junmin Zhang
- College of Chemistry and Environmental Engineering , Shenzhen University , Shenzhen 518060 , China .
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61
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Jin X, Sang Y, Shi Y, Li Y, Zhu X, Duan P, Liu M. Optically Active Upconverting Nanoparticles with Induced Circularly Polarized Luminescence and Enantioselectively Triggered Photopolymerization. ACS NANO 2019; 13:2804-2811. [PMID: 30688444 DOI: 10.1021/acsnano.8b08273] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
In this work, lanthanide-doped upconversion nanoparticles (UCNPs) showing upconverted circularly polarized luminescence were demonstrated in an organic-inorganic co-assembled system. Achiral UCNPs (NaYF4:Yb/Er or NaYF4:Yb/Tm) can be encapsulated into chiral helical nanotubes through the procedure of co-gelation. These co-gel systems display intense upconverted circularly polarized luminescence (UC-CPL) ranging from ultraviolet (UV, 300 nm) to near-infrared (NIR, 850 nm) wavelength. In addition, the UV part of UC-CPL can be used to initiate the enantioselective polymerization of diacetylene.
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Affiliation(s)
- Xue Jin
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication Division of Nanophotonics , National Center for Nanoscience and Technology (NCNST) , No. 11 ZhongGuanCun BeiYiTiao , Beijing 100190 , P. R. China
| | - Yutao Sang
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid, Interface, and Chemical Thermodynamics, Institute of Chemistry , Chinese Academy of Sciences , No. 2 ZhongGuanCun BeiYiJie , Beijing 100190 , P. R. China
- University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Yonghong Shi
- College of Chemistry and Chemical Engineering , Xi'an University of Science and Technology , No. 58, Yanta Road , Xi'an 710054 , P.R. China
| | - Yuangang Li
- College of Chemistry and Chemical Engineering , Xi'an University of Science and Technology , No. 58, Yanta Road , Xi'an 710054 , P.R. China
| | - Xuefeng Zhu
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid, Interface, and Chemical Thermodynamics, Institute of Chemistry , Chinese Academy of Sciences , No. 2 ZhongGuanCun BeiYiJie , Beijing 100190 , P. R. China
| | - Pengfei Duan
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication Division of Nanophotonics , National Center for Nanoscience and Technology (NCNST) , No. 11 ZhongGuanCun BeiYiTiao , Beijing 100190 , P. R. China
- University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Minghua Liu
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication Division of Nanophotonics , National Center for Nanoscience and Technology (NCNST) , No. 11 ZhongGuanCun BeiYiTiao , Beijing 100190 , P. R. China
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid, Interface, and Chemical Thermodynamics, Institute of Chemistry , Chinese Academy of Sciences , No. 2 ZhongGuanCun BeiYiJie , Beijing 100190 , P. R. China
- University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
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62
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Yang G, Zhong H. Multi‐Dimensional Quantum Nanostructures with Polarization Properties for Display Applications. Isr J Chem 2019. [DOI: 10.1002/ijch.201900001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Gaoling Yang
- Department of Physics of Complex SystemsWeizmann Institute of Science Rehovot 76100 Israel
| | - Haizheng Zhong
- Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic SystemsSchool of Materials Science & EngineeringBeijing Institute of Technology Beijing China
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63
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Li C, Jin X, Zhao T, Zhou J, Duan P. Optically active quantum dots with induced circularly polarized luminescence in amphiphilic peptide dendron hydrogel. NANOSCALE ADVANCES 2019; 1:508-512. [PMID: 36132252 PMCID: PMC9473277 DOI: 10.1039/c8na00216a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 10/25/2018] [Indexed: 05/27/2023]
Abstract
In this study, water-soluble semiconductor quantum dots (QDs) showing induced circularly polarized luminescence (CPL) in an organic-inorganic coassembled hydrogel were demonstrated. Achiral QDs could be encapsulated into a chiral peptide dendron hydrogel through cogelation. These cogels displayed intense induced circularly polarized emission. In addition, the direction of the CPL property of QD cogels could be regulated by the supramolecular chirality of hydrogels. Our findings reveal that the emergence of CPL achiral QDs can be triggered by the chirality transfer in a multiple-component dendron hydrogel system. This study has given a new understanding into the design of functional chiroptical materials.
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Affiliation(s)
- Chengxi Li
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, Division of Nanophotonics, National Center for Nanoscience and Technology (NCNST) No. 11 ZhongGuanCun BeiYiTiao Beijing 100190 P. R. China +86-10-82545510
- School of Nanoscience and Technology, University of Chinese Academy of Sciences Beijing 100049 P. R. China
- College of Chemistry, Key Lab of Environment-Friendly Chemistry and Application of the Ministry of Education, Xiangtan University Xiangtan 411105 P. R. China
| | - Xue Jin
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, Division of Nanophotonics, National Center for Nanoscience and Technology (NCNST) No. 11 ZhongGuanCun BeiYiTiao Beijing 100190 P. R. China +86-10-82545510
| | - Tonghan Zhao
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, Division of Nanophotonics, National Center for Nanoscience and Technology (NCNST) No. 11 ZhongGuanCun BeiYiTiao Beijing 100190 P. R. China +86-10-82545510
- School of Nanoscience and Technology, University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Jin Zhou
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, Division of Nanophotonics, National Center for Nanoscience and Technology (NCNST) No. 11 ZhongGuanCun BeiYiTiao Beijing 100190 P. R. China +86-10-82545510
| | - Pengfei Duan
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, Division of Nanophotonics, National Center for Nanoscience and Technology (NCNST) No. 11 ZhongGuanCun BeiYiTiao Beijing 100190 P. R. China +86-10-82545510
- School of Nanoscience and Technology, University of Chinese Academy of Sciences Beijing 100049 P. R. China
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64
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Wang T, Jin X, Yang J, Wu J, Yu Q, Pan Z, Wu H, Li J, Su R, Xu J, Zhang K, He T, Zhou P. Ultra-stable pulse generation in ytterbium-doped fiber laser based on black phosphorus. NANOSCALE ADVANCES 2019; 1:195-202. [PMID: 36132444 PMCID: PMC9473206 DOI: 10.1039/c8na00221e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 12/02/2018] [Indexed: 06/10/2023]
Abstract
We demonstrated a high-quality black phosphorus (BP) crystal fabricated via a modified electrochemical delamination exfoliation process. Employing the nonlinear transmittance method and Z-scan technique, the nonlinear optical properties of BP were characterized. Based on the saturable absorber (SA) of BP, we designed a passively Q-switched ytterbium (Yb)-doped fiber laser operating at 1.06 μm. Additionally, the pulse laser could operate stably for at least 69 days. These experimental results indicate that the modified BP is an ultra-stable and promising optical modulation material for ultrashort pulse generation in Yb-doped fiber lasers.
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Affiliation(s)
- Tao Wang
- College of Advanced Interdisciplinary Studies, National University of Defense Technology Changsha 410073 China
| | - Xiaoxi Jin
- College of Advanced Interdisciplinary Studies, National University of Defense Technology Changsha 410073 China
| | - Jie Yang
- i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences Suzhou 215123 China
| | - Jian Wu
- College of Advanced Interdisciplinary Studies, National University of Defense Technology Changsha 410073 China
- CAS Key Laboratory of Nano-Bio Interface, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences Suzhou 215123 China
| | - Qiang Yu
- i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences Suzhou 215123 China
| | - Zhenghui Pan
- i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences Suzhou 215123 China
| | - Hanshuo Wu
- College of Advanced Interdisciplinary Studies, National University of Defense Technology Changsha 410073 China
| | - Junzi Li
- College of Physics and Energy, Shenzhen University Shenzhen 518060 China
| | - Rongtao Su
- College of Advanced Interdisciplinary Studies, National University of Defense Technology Changsha 410073 China
| | - Jiangming Xu
- College of Advanced Interdisciplinary Studies, National University of Defense Technology Changsha 410073 China
| | - Kai Zhang
- i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences Suzhou 215123 China
| | - Tingchao He
- College of Physics and Energy, Shenzhen University Shenzhen 518060 China
| | - Pu Zhou
- College of Advanced Interdisciplinary Studies, National University of Defense Technology Changsha 410073 China
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Bai X, Purcell-Milton F, Gun'ko YK. Optical Properties, Synthesis, and Potential Applications of Cu-Based Ternary or Quaternary Anisotropic Quantum Dots, Polytypic Nanocrystals, and Core/Shell Heterostructures. NANOMATERIALS 2019; 9:nano9010085. [PMID: 30634642 PMCID: PMC6359286 DOI: 10.3390/nano9010085] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 12/28/2018] [Accepted: 12/31/2018] [Indexed: 12/29/2022]
Abstract
This review summaries the optical properties, recent progress in synthesis, and a range of applications of luminescent Cu-based ternary or quaternary quantum dots (QDs). We first present the unique optical properties of the Cu-based multicomponent QDs, regarding their emission mechanism, high photoluminescent quantum yields (PLQYs), size-dependent bandgap, composition-dependent bandgap, broad emission range, large Stokes’ shift, and long photoluminescent (PL) lifetimes. Huge progress has taken place in this area over the past years, via detailed experimenting and modelling, giving a much more complete understanding of these nanomaterials and enabling the means to control and therefore take full advantage of their important properties. We then fully explore the techniques to prepare the various types of Cu-based ternary or quaternary QDs (including anisotropic nanocrystals (NCs), polytypic NCs, and spherical, nanorod and tetrapod core/shell heterostructures) are introduced in subsequent sections. To date, various strategies have been employed to understand and control the QDs distinct and new morphologies, with the recent development of Cu-based nanorod and tetrapod structure synthesis highlighted. Next, we summarize a series of applications of these luminescent Cu-based anisotropic and core/shell heterostructures, covering luminescent solar concentrators (LSCs), bioimaging and light emitting diodes (LEDs). Finally, we provide perspectives on the overall current status, challenges, and future directions in this field. The confluence of advances in the synthesis, properties, and applications of these Cu-based QDs presents an important opportunity to a wide-range of fields and this piece gives the reader the knowledge to grasp these exciting developments.
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Affiliation(s)
- Xue Bai
- School of Chemistry and CRANN Institute, Trinity College Dublin, Dublin 2, Dublin, Ireland.
| | - Finn Purcell-Milton
- School of Chemistry and CRANN Institute, Trinity College Dublin, Dublin 2, Dublin, Ireland.
| | - Yuri K Gun'ko
- School of Chemistry and CRANN Institute, Trinity College Dublin, Dublin 2, Dublin, Ireland.
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Abstract
Semiconductor heterostructure nanocrystals, especially with core/shell architectures, are important for numerous applications. Here we show that by decreasing the shell growth rate the morphology of ZnS shells on ZnSe quantum rods can be tuned from flat to islands-like, which decreases the interfacial strain energy. Further reduced growth speed, approaching the thermodynamic limit, leads to coherent shell growth forming unique helical-shell morphology. This reveals a template-free mechanism for induced chirality at the nanoscale. The helical morphology minimizes the sum of the strain and surface energy and maintains band gap emission due to its coherent core/shell interface without traps, unlike the other morphologies. Reaching the thermodynamic controlled growth regime for colloidal semiconductor core/shell nanocrystals thus offers morphologies with clear impact on their applicative potential. Core/shell semiconductor nanocrystals have advantageous optoelectronic properties, which depend on the shell architecture. Here the authors show that by reducing the growth rate of ZnS shells on ZnSe nanorods the shell morphology can be tuned from flat to islands-like to helical
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Li Y, Cheng J, Li J, Zhu X, He T, Chen R, Tang Z. Tunable Chiroptical Properties from the Plasmonic Band to Metal-Ligand Charge Transfer Band of Cysteine-Capped Molybdenum Oxide Nanoparticles. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806093] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Yiwen Li
- Department of Electrical and Electronic Engineering; Southern University of Science and Technology; Shenzhen 518055 P. R. China
- The Institute of Applied Physics and Materials Engineering; University of Macau; Avenida da Universidade Taipa Macau
| | - Jiaji Cheng
- College of Physics and Energy; Shenzhen University; Shenzhen 518060 P. R. China
| | - Jiagen Li
- School of Science and Engineering; The Chinese University of Hong Kong; Shenzhen P. R. China
| | - Xi Zhu
- School of Science and Engineering; The Chinese University of Hong Kong; Shenzhen P. R. China
| | - Tingchao He
- College of Physics and Energy; Shenzhen University; Shenzhen 518060 P. R. China
| | - Rui Chen
- Department of Electrical and Electronic Engineering; Southern University of Science and Technology; Shenzhen 518055 P. R. China
| | - Zikang Tang
- The Institute of Applied Physics and Materials Engineering; University of Macau; Avenida da Universidade Taipa Macau
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Li Y, Cheng J, Li J, Zhu X, He T, Chen R, Tang Z. Tunable Chiroptical Properties from the Plasmonic Band to Metal-Ligand Charge Transfer Band of Cysteine-Capped Molybdenum Oxide Nanoparticles. Angew Chem Int Ed Engl 2018; 57:10236-10240. [DOI: 10.1002/anie.201806093] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 06/21/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Yiwen Li
- Department of Electrical and Electronic Engineering; Southern University of Science and Technology; Shenzhen 518055 P. R. China
- The Institute of Applied Physics and Materials Engineering; University of Macau; Avenida da Universidade Taipa Macau
| | - Jiaji Cheng
- College of Physics and Energy; Shenzhen University; Shenzhen 518060 P. R. China
| | - Jiagen Li
- School of Science and Engineering; The Chinese University of Hong Kong; Shenzhen P. R. China
| | - Xi Zhu
- School of Science and Engineering; The Chinese University of Hong Kong; Shenzhen P. R. China
| | - Tingchao He
- College of Physics and Energy; Shenzhen University; Shenzhen 518060 P. R. China
| | - Rui Chen
- Department of Electrical and Electronic Engineering; Southern University of Science and Technology; Shenzhen 518055 P. R. China
| | - Zikang Tang
- The Institute of Applied Physics and Materials Engineering; University of Macau; Avenida da Universidade Taipa Macau
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