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Curti L, Landaburu G, Abécassis B, Fleury B. Chiroptical Properties of Semiconducting Nanoplatelets Functionalized by Tartrate Derivatives. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:11481-11490. [PMID: 38663023 DOI: 10.1021/acs.langmuir.4c00528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
Inducing chirality in semiconductor nanoparticles is a recent trend motivated by the possible applications in circularly polarized light emission, spintronics, or stereoselective synthesis. However, the previous reports on CdSe nanoplatelets (NPLs) exclusively rely on cysteine or its derivatives as chiral ligands to induce optical activity. Here, we show a strong induction of chirality with derivatives of tartaric acid obtained by a single-step synthesis. The ligand exchange procedure in organic solvent was optimized for five-monolayer (5 ML) NPLs but can also be performed on 4, 3, and 2 ML. We show that the features of the CD spectra change with structural modification of the ligands and that these chiral ligands interact mainly with the first light-hole (lh1) band rather than the first heavy-hole (hh1) band, contrary to cysteine. This result suggests that chiroptical properties could be used to probe CdSe nanoplatelets' surface ligands.
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Affiliation(s)
- Leonardo Curti
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, F-75005 Paris, France
| | - Guillaume Landaburu
- ENSL, CNRS, Laboratoire de Chimie UMR 5182, 46 allée d'Italie, 69364 Lyon France
| | - Benjamin Abécassis
- ENSL, CNRS, Laboratoire de Chimie UMR 5182, 46 allée d'Italie, 69364 Lyon France
| | - Benoit Fleury
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, F-75005 Paris, France
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2
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Cao H, Yang E, Kim Y, Zhao Y, Ma W. Biomimetic Chiral Nanomaterials with Selective Catalysis Activity. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2306979. [PMID: 38561968 PMCID: PMC11187969 DOI: 10.1002/advs.202306979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 01/20/2024] [Indexed: 04/04/2024]
Abstract
Chiral nanomaterials with unique chiral configurations and biocompatible ligands have been booming over the past decade for their interesting chiroptical effect, unique catalytical activity, and related bioapplications. The catalytic activity and selectivity of chiral nanomaterials have emerged as important topics, that can be potentially controlled and optimized by the rational biochemical design of nanomaterials. In this review, chiral nanomaterials synthesis, composition, and catalytic performances of different biohybrid chiral nanomaterials are discussed. The construction of chiral nanomaterials with multiscale chiral geometries along with the underlying principles for enhancing chiroptical responses are highlighted. Various biochemical approaches to regulate the selectivity and catalytic activity of chiral nanomaterials for biocatalysis are also summarized. Furthermore, attention is paid to specific chiral ligands, materials compositions, structure characteristics, and so on for introducing selective catalytic activities of representative chiral nanomaterials, with emphasis on substrates including small molecules, biological macromolecule, and in-site catalysis in living systems. Promising progress has also been emphasized in chiral nanomaterials featuring structural versatility and improved chiral responses that gave rise to unprecedented chances to utilize light for biocatalytic applications. In summary, the challenges, future trends, and prospects associated with chiral nanomaterials for catalysis are comprehensively proposed.
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Affiliation(s)
- Honghui Cao
- School of Perfume and Aroma TechnologyShanghai Institute of TechnologyNo. 100 Haiquan RoadShanghai201418China
- School of Food Science and Technology, State Key Laboratory of Food Science and ResourcesJiangnan UniversityWuxiJiangsu214122China
| | - En Yang
- School of Food Science and Technology, State Key Laboratory of Food Science and ResourcesJiangnan UniversityWuxiJiangsu214122China
- Key Laboratory of Synthetic and Biological ColloidsMinistry of Education, School of Chemical and Material EngineeringJiangnan UniversityWuxiJiangsu214122China
| | - Yoonseob Kim
- Department of Chemical and Biological EngineeringThe Hong Kong University of Science and TechnologyClear Water BayHong Kong SAR999077China
| | - Yuan Zhao
- Key Laboratory of Synthetic and Biological ColloidsMinistry of Education, School of Chemical and Material EngineeringJiangnan UniversityWuxiJiangsu214122China
| | - Wei Ma
- School of Food Science and Technology, State Key Laboratory of Food Science and ResourcesJiangnan UniversityWuxiJiangsu214122China
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3
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Li Z, Li W, Li D, Tang W, Liang H, Song H, Chen C, Gao L, Tang J. Circularly polarized light emission and detection by chiral inorganic semiconductors. FRONTIERS OF OPTOELECTRONICS 2024; 17:15. [PMID: 38819471 PMCID: PMC11143083 DOI: 10.1007/s12200-024-00120-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Accepted: 04/16/2024] [Indexed: 06/01/2024]
Abstract
Chiral inorganic semiconductors with high dissymmetric factor are highly desirable, but it is generally difficult to induce chiral structure in inorganic semiconductors because of their structure rigidity and symmetry. In this study, we introduced chiral ZnO film as hard template to transfer chirality to CsPbBr3 film and PbS quantum dots (QDs) for circularly polarized light (CPL) emission and detection, respectively. The prepared CsPbBr3/ZnO thin film exhibited CPL emission at 520 nm and the PbS QDs/ZnO film realized CPL detection at 780 nm, featuring high dissymmetric factor up to around 0.4. The electron transition based mechanism is responsible for chirality transfer.
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Affiliation(s)
- Zha Li
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China.
| | - Wancai Li
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Dehui Li
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Wei Tang
- International Health Care Center, National Center for Global Health and Medicine, Tokyo, 162-8655, Japan
- Hepato-Biliary-Pancreatic Surgery Division, Department of Surgery, The University of Tokyo Hospital, Tokyo, 113-8655, Japan
| | - Huageng Liang
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Huaibing Song
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China
| | - Chao Chen
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Liang Gao
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China.
| | - Jiang Tang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China
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4
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Wang Y, Liang P, Men Y, Jiang M, Cheng L, Li J, Jia T, Sun Z, Feng D. Light-induced photoluminescence enhancement in chiral CdSe quantum dot films. J Chem Phys 2024; 160:161102. [PMID: 38651809 DOI: 10.1063/5.0201365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 04/07/2024] [Indexed: 04/25/2024] Open
Abstract
Chiral quantum dots (QDs) are promising materials applied in many areas, such as chiral molecular recognition and spin selective filter for charge transport, and can be prepared by facile ligand exchange approaches. However, ligand exchange leads to an increase in surface defects and reduces the efficiencies of radiative recombination and charge transport, which restricts further applications. Here, we investigate the light-induced photoluminescence (PL) enhancement in chiral L- and D-cysteine CdSe QD thin films, providing a strategy to increase the PL. The PL intensity of chiral CdSe QD films can be significantly enhanced over 100 times by continuous UV laser irradiation, indicating a strong passivation of surface defects upon laser irradiation. From the comparative measurements of the PL intensity evolutions in vacuum, dry oxygen, air, and humid nitrogen atmospheres, we conclude that the mechanism of PL enhancement is photo-induced surface passivation with the assistance of water molecules.
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Affiliation(s)
- Yang Wang
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China
| | - Pan Liang
- College of Arts and Sciences, Shanghai Dianji University, Shanghai 201306, China
| | - Yumeng Men
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China
| | - Meizhen Jiang
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China
| | - Lin Cheng
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China
| | - Jinlei Li
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China
| | - Tianqing Jia
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China
| | - Zhenrong Sun
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China
| | - Donghai Feng
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, China
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5
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Pranav, Bajpai A, Dwivedi PK, Sivakumar S. Chiral nanomaterial-based approaches for diagnosis and treatment of protein-aggregated neurodiseases: current status and future opportunities. J Mater Chem B 2024; 12:1991-2005. [PMID: 38333942 DOI: 10.1039/d3tb02381h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2024]
Abstract
Protein misfolding and its aggregation, known as amyloid aggregates (Aβ), are some of the major causes of more than 20 diseases such as Parkinson's disease, Alzheimer's disease, and type 2 diabetes. The process of Aβ formation involves an energy-driven oligomerization of Aβ monomers, leading to polymerization and eventual aggregation into fibrils. Aβ fibrils exhibit multilevel chirality arising from its amino acid residues and the arrangement of folded polypeptide chains; thus, a chirality-driven approach can be utilized for the detection and inhibition of Aβ fibrils. In this regard, chiral nanomaterials have recently opened new possibilities for various biomedical applications owing to their stereoselective interaction with biological systems. Leveraging this chirality-driven approach with chiral nanomaterials against protein-aggregated diseases could yield promising results, particularly in the early detection of Aβ forms and the inhibition of Aβ aggregate formation via specific and strong "chiral-chiral interaction." Despite the advantages, the development of advanced theranostic systems using chiral nanomaterials against protein-aggregated diseases has received limited attention so far because of considerably limited formulations for chiral nanomaterials and lack of information of their chiroptical behavior. This review aims to present the current status of chiral nanomaterials explored for detecting and inhibiting Aβ forms. This review covers the origin of chirality in amyloid fibrils and nanomaterials and different chiral detection methods; furthermore, different chiral nanosystems such as chiral plasmonic nanomaterials, chiral carbon-based nanomaterials, and chiral nanosurfaces, which have been used so far for different therapeutic applications against protein-aggregated diseases, are discussed in detail. The findings from this review may pave the way for the development of novel approaches using chiral nanomaterials to combat diseases resulting from protein misfolding and can further be extended to other disease forms.
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Affiliation(s)
- Pranav
- Centre for Nanosciences, Indian Institute of Technology, Kanpur 208016, India.
| | - Abhishek Bajpai
- Centre for Nanosciences, Indian Institute of Technology, Kanpur 208016, India.
| | - Prabhat K Dwivedi
- Centre for Nanosciences, Indian Institute of Technology, Kanpur 208016, India.
| | - Sri Sivakumar
- Centre for Nanosciences, Indian Institute of Technology, Kanpur 208016, India.
- Department of Chemical Engineering, Indian Institute of Technology, Kanpur 208016, India
- Materials Science Program, Indian Institute of Technology, Kanpur 208016, India
- Centre for Environmental Science and Engineering, India
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6
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Branzi L, Lavet O, Gun'ko YK. Ligand induced chirality in In 2S 3 nanoparticles. NANOSCALE 2023; 15:18753-18761. [PMID: 37953729 DOI: 10.1039/d3nr04320g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2023]
Abstract
Chiral inorganic nanostructures have attracted a lot of attention over the last few years. Here we report the first observation of chirality in indium sulfide nanoparticles, which have been produced by a co-precipitation reaction in the presence of cysteine as a chiral agent. The process resulted in the production of spherical nanoparticles with an average diameter of around 3.6 nm. Circular dichroism spectroscopy of the nanoparticles showed an intense chiroptical signal corresponding to the indium sulfide excitonic transition, confirming the successful transfer of chirality to the In2S3 inorganic matrix. Nuclear magnetic resonance analysis of a colloidal solution of the nanoparticles demonstrated critical evidence of chemisorption of the chiral ligand on the surface of the nanoparticles and revealed a characteristic fast chemical exchange between the ligand chemisorbed on the surface of the nanoparticles and the free ligand in solution. Finally, the effect of the chiral ligand's structure on the transfer of chirality was investigated, with consideration of other amino acid ligands, and the critical role of the thiolate group in the optimisation of the chiral transfer was observed. This research is expected to stimulate further development and applications of new chiral semiconductor nanomaterials.
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Affiliation(s)
- Lorenzo Branzi
- School of Chemistry, CRANN and AMBER Research Centres, Trinity College Dublin, College Green, Dublin 2, Ireland.
| | - Oriane Lavet
- Chemistry Department, University of Clermont Auvergne, Antenne du Puy en Velay, 43009 Le Puy en Velay Cedex, France
| | - Yurii K Gun'ko
- School of Chemistry, CRANN and AMBER Research Centres, Trinity College Dublin, College Green, Dublin 2, Ireland.
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7
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Cai J, Liu AA, Shi XH, Fu H, Zhao W, Xu L, Kuang H, Xu C, Pang DW. Enhancing Circularly Polarized Luminescence in Quantum Dots through Chiral Coordination-Mediated Growth at the Liquid/Liquid Interface. J Am Chem Soc 2023; 145:24375-24385. [PMID: 37883809 DOI: 10.1021/jacs.3c09448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
Here, we develop a novel methodology for synthesizing chiral CdSe@ZnS quantum dots (QDs) with enhanced circularly polarized luminescence (CPL) by incorporating l-/d-histidine (l-/d-His) ligands during ZnS shell growth at the water/oil interface. The resulting chiral QDs exhibit exceptional absolute photoluminescence quantum yield of up to 67.2%, surpassing the reported limits of 40.0% for chiral inorganic QDs, along with absorption dissymmetry factor (|gabs|) and luminescence dissymmetry factor (|glum|) values of 10-2, exceeding the range of 10-5-10-3 and 10-4-10-2, respectively. Detailed investigations of the synthetic pathway reveal that the interface, as a binary synthetic environment, facilitates the coordinated ligand exchange and shell growth mediated by chiral His-Zn2+ coordination complexes, leading to a maximum fluorescent brightness and chiroptical activities. The growth process, regulated by the His-Zn2+ coordination complex, not only reduces trap states on the CdSe surface, thereby enhancing the fluorescence intensity, but also significantly promotes the orbital hybridization between QDs and chiral ligands, effectively overcoming the shielding effect of the wide bandgap shell and imparting pronounced chirality. The proposed growth pathway elucidates the origin of chirality and provides insights into the regulation of the CPL intensity in chiral QDs. Furthermore, the application of CPL QDs in multilevel anticounterfeiting systems overcomes the limitations of replication in achiral fluorescence materials and enhances the system's resistance to counterfeiting, thus opening new opportunities for chiral QDs in optical anticounterfeiting and intelligent information encryption.
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Affiliation(s)
- Jiarong Cai
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Frontiers Science Center for New Organic Matter, Research Center for Analytical Sciences, College of Chemistry, Frontiers Science Center for Cell Responses, Engineering Research Center of Thin Film Optoelectronics Technology, Ministry of Education, School of Materials Science and Engineering, Smart Sensing Interdisciplinary Science Center, Haihe Laboratory of Sustainable Chemical Transformations, Nankai University, Tianjin 300071, China
| | - An-An Liu
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Frontiers Science Center for New Organic Matter, Research Center for Analytical Sciences, College of Chemistry, Frontiers Science Center for Cell Responses, Engineering Research Center of Thin Film Optoelectronics Technology, Ministry of Education, School of Materials Science and Engineering, Smart Sensing Interdisciplinary Science Center, Haihe Laboratory of Sustainable Chemical Transformations, Nankai University, Tianjin 300071, China
| | - Xue-Hui Shi
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Frontiers Science Center for New Organic Matter, Research Center for Analytical Sciences, College of Chemistry, Frontiers Science Center for Cell Responses, Engineering Research Center of Thin Film Optoelectronics Technology, Ministry of Education, School of Materials Science and Engineering, Smart Sensing Interdisciplinary Science Center, Haihe Laboratory of Sustainable Chemical Transformations, Nankai University, Tianjin 300071, China
| | - Haohao Fu
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Frontiers Science Center for New Organic Matter, Research Center for Analytical Sciences, College of Chemistry, Frontiers Science Center for Cell Responses, Engineering Research Center of Thin Film Optoelectronics Technology, Ministry of Education, School of Materials Science and Engineering, Smart Sensing Interdisciplinary Science Center, Haihe Laboratory of Sustainable Chemical Transformations, Nankai University, Tianjin 300071, China
| | - Wei Zhao
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Frontiers Science Center for New Organic Matter, Research Center for Analytical Sciences, College of Chemistry, Frontiers Science Center for Cell Responses, Engineering Research Center of Thin Film Optoelectronics Technology, Ministry of Education, School of Materials Science and Engineering, Smart Sensing Interdisciplinary Science Center, Haihe Laboratory of Sustainable Chemical Transformations, Nankai University, Tianjin 300071, China
| | - Liguang Xu
- State Key Laboratory of Food Science and Technology, International Joint Research Laboratory for Biointerface and Biodetection, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Hua Kuang
- State Key Laboratory of Food Science and Technology, International Joint Research Laboratory for Biointerface and Biodetection, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Chuanlai Xu
- State Key Laboratory of Food Science and Technology, International Joint Research Laboratory for Biointerface and Biodetection, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Dai-Wen Pang
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Frontiers Science Center for New Organic Matter, Research Center for Analytical Sciences, College of Chemistry, Frontiers Science Center for Cell Responses, Engineering Research Center of Thin Film Optoelectronics Technology, Ministry of Education, School of Materials Science and Engineering, Smart Sensing Interdisciplinary Science Center, Haihe Laboratory of Sustainable Chemical Transformations, Nankai University, Tianjin 300071, China
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8
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Hao C, Xu C, Kuang H. Chiral probes for biosensing. Chem Commun (Camb) 2023; 59:12959-12971. [PMID: 37823263 DOI: 10.1039/d3cc03660j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
Chiral inorganic nanomaterials have emerged as a highly promising area of research in nanoscience due to their exceptional light-matter interaction and vast potential applications in chiral sensing, asymmetric catalysis, enantiomer separation, and negative-index materials. We present an overview of the latest advances in chiral inorganic nanomaterials including chiral individual nanoparticles, chiral assemblies, and chiral film-based sensors over the past ten years. Additionally, we discuss the challenges and future perspectives for developing chiral nanomaterials in biosensing applications.
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Affiliation(s)
- Changlong Hao
- International Joint Research Laboratory for Biointerface and Biodetection, State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China.
| | - Chuanlai Xu
- International Joint Research Laboratory for Biointerface and Biodetection, State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China.
| | - Hua Kuang
- International Joint Research Laboratory for Biointerface and Biodetection, State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China.
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9
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Somasundaran SM, Kompella SVK, Mohan T M N, Das S, Abdul Vahid A, Vijayan V, Balasubramanian S, Thomas KG. Structurally Induced Chirality of an Achiral Chromophore on Self-Assembled Nanofibers: A Twist Makes It Chiral. ACS NANO 2023. [PMID: 37220308 DOI: 10.1021/acsnano.3c03892] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The surface domains of self-assembled amphiphiles are well-organized and can perform many physical, chemical, and biological functions. Here, we present the significance of chiral surface domains of these self-assemblies in transferring chirality to achiral chromophores. These aspects are probed using l- and d-isomers of alkyl alanine amphiphiles which self-assemble in water as nanofibers, possessing a negative surface charge. When bound on these nanofibers, positively charged cyanine dyes (CY524 and CY600), each having two quinoline rings bridged by conjugated double bonds, show contrasting chiroptical features. Interestingly, CY600 displays a bisignated circular dichroic (CD) signal with mirror-image symmetry, while CY524 is CD silent. Molecular dynamics simulations reveal that the model cylindrical micelles (CM) derived from the two isomers exhibit surface chirality and the chromophores are buried as monomers in mirror-imaged pockets on their surfaces. The monomeric nature of template-bound chromophores and their binding reversibility are established by concentration- and temperature-dependent spectroscopies and calorimetry. On the CM, CY524 displays two equally populated conformers with opposite sense, whereas CY600 is present as two pairs of twisted conformers in each of which one is in excess, due to differences in weak dye-amphiphile hydrogen bonding interactions. Infrared and NMR spectroscopies support these findings. Reduction of electronic conjugation caused by the twist establishes the two quinoline rings as independent entities. On-resonance coupling between the transition dipoles of these units generates bisignated CD signals with mirror-image symmetry. The results presented herein provide insight on the little-known structurally induced chirality of achiral chromophores through transfer of chiral surface information.
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Affiliation(s)
- Sanoop Mambully Somasundaran
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER TVM), Vithura, Thiruvananthapuram 695551, India
| | - Srinath V K Kompella
- Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bangalore 560064, India
| | - Nila Mohan T M
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER TVM), Vithura, Thiruvananthapuram 695551, India
| | - Sudip Das
- Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bangalore 560064, India
| | - Arshad Abdul Vahid
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER TVM), Vithura, Thiruvananthapuram 695551, India
| | - Vinesh Vijayan
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER TVM), Vithura, Thiruvananthapuram 695551, India
| | - Sundaram Balasubramanian
- Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bangalore 560064, India
| | - K George Thomas
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER TVM), Vithura, Thiruvananthapuram 695551, India
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10
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Kwon YH, Joh YA, Leonard BM, Balaz M, Varga K. Threonine functionalized colloidal cadmium sulfide (CdS) quantum dots: the role of solvent and counterion in ligand included chiroptical properties. J Colloid Interface Sci 2023; 642:771-778. [PMID: 37037081 PMCID: PMC10164713 DOI: 10.1016/j.jcis.2023.03.177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 03/21/2023] [Accepted: 03/28/2023] [Indexed: 04/03/2023]
Abstract
The functionalization of semiconductor nanocrystals, quantum dots (QDs), with small organic molecules has been studied extensively to gain better knowledge on how to tune the electronic, optical and chiroptical properties of QDs. Chiral QDs have progressively emerged as key materials in a vast range of applications including biosensing and biorecognition, imaging, asymmetric catalysis, optoelectronic devices, and spintronics. To engage the full potential of the unique properties of chiral nanomaterials and be able to prepare them with tailorable chiroptical characteristics, it is essential to understand how chirality is rendered from chiral molecular ligands at the surface of nanocrystals to the electronic states of QDs. Using a series of polar protic and aprotic solvents together with ammonium (NH4+), tetramethylammonium (TMA+), and tetrabutylammonium (TBA+) countercations in the preparation of threonine-functionalized cadmium sulfide (Thr-CdS) QDs by phase transfer ligand exchange approach, we demonstrated the significance of the role both the solvent and the countercations play in the transfer of chirality from chiral molecular ligand to achiral semiconductor QDs as apparent by the modulations of the signatures and anisotropy of the circular dichroism (CD) spectra. Moreover, we have utilized tetrabutylammonium countercation to successfully synthesize chiral QDs in nonpolar cyclohexane solvent for the first time. This study provides further insights into the origin of the ligand induced chirality of colloidal nanomaterials and facilitates the synthesis of tailormade chiral QDs.
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11
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Hao C, Wang G, Chen C, Xu J, Xu C, Kuang H, Xu L. Circularly Polarized Light-Enabled Chiral Nanomaterials: From Fabrication to Application. NANO-MICRO LETTERS 2023; 15:39. [PMID: 36652114 PMCID: PMC9849638 DOI: 10.1007/s40820-022-01005-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 12/10/2022] [Indexed: 05/31/2023]
Abstract
For decades, chiral nanomaterials have been extensively studied because of their extraordinary properties. Chiral nanostructures have attracted a lot of interest because of their potential applications including biosensing, asymmetric catalysis, optical devices, and negative index materials. Circularly polarized light (CPL) is the most attractive source for chirality owing to its high availability, and now it has been used as a chiral source for the preparation of chiral matter. In this review, the recent progress in the field of CPL-enabled chiral nanomaterials is summarized. Firstly, the recent advancements in the fabrication of chiral materials using circularly polarized light are described, focusing on the unique strategies. Secondly, an overview of the potential applications of chiral nanomaterials driven by CPL is provided, with a particular emphasis on biosensing, catalysis, and phototherapy. Finally, a perspective on the challenges in the field of CPL-enabled chiral nanomaterials is given.
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Affiliation(s)
- Changlong Hao
- International Joint Research Laboratory for Biointerface and Biodetection, State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China
| | - Gaoyang Wang
- International Joint Research Laboratory for Biointerface and Biodetection, State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China
| | - Chen Chen
- International Joint Research Laboratory for Biointerface and Biodetection, State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China
| | - Jun Xu
- Department of Neurology, China National Clinical Research Center for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, No.119 South 4Th Ring West Road, Beijing, 100070, People's Republic of China
| | - Chuanlai Xu
- International Joint Research Laboratory for Biointerface and Biodetection, State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China
| | - Hua Kuang
- International Joint Research Laboratory for Biointerface and Biodetection, State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China
| | - Liguang Xu
- International Joint Research Laboratory for Biointerface and Biodetection, State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China.
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12
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Qu S, Qiao Z, Zhong W, Liang K, Jiang X, Shang L. Chirality-Dependent Dynamic Evolution of the Protein Corona on the Surface of Quantum Dots. ACS APPLIED MATERIALS & INTERFACES 2022; 14:44147-44157. [PMID: 36153958 DOI: 10.1021/acsami.2c11874] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Elucidating the biological behavior of engineered nanoparticles, for example, the protein corona, is important for the development of safe and efficient nanomedicine, but our current understanding is still limited due to its highly dynamic nature and lack of adequate analytical tools. In the present work, we demonstrate the establishment of a fluorescence resonance energy transfer (FRET)-based platform for monitoring the dynamic evolution behavior of the protein corona in complex biological media. With human serum albumin and lysozyme as the model serum proteins, the protein exchange process of the preformed corona on the surface of chiral quantum dots (QDs) upon feeding either individual protein or human serum was monitored in situ by FRET. Important parameters characterizing the evolution process of protein corona could be obtained upon quantitative analysis of FRET data. Further combining real-time FRET monitoring with gel electrophoresis experiments revealed that the nature of the protein initially adsorbed on the surface of QDs significantly affects the subsequent dynamic exchange behavior of the protein corona. Furthermore, our results also revealed that only a limited proportion of proteins are involved in the protein exchange, and the exchange process exhibits a significant dependence on the surface chirality of QDs. This work demonstrates the feasibility of FRET as a powerful tool to exploit the dynamic evolution process of the protein corona, which can provide theoretical guidance for further design of advanced nanomaterials for biomedical applications.
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Affiliation(s)
- Shaohua Qu
- State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University (NPU), Xi'an 710072, China
| | - Zihan Qiao
- State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University (NPU), Xi'an 710072, China
| | - Wencheng Zhong
- State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University (NPU), Xi'an 710072, China
| | - Kangqiang Liang
- State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University (NPU), Xi'an 710072, China
| | - Xiue Jiang
- State Key Lab of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China
| | - Li Shang
- State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University (NPU), Xi'an 710072, China
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13
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Branzi L, Purcell-Milton F, Cressoni C, Back M, Cattaruzza E, Speghini A, Gun'ko YK, Benedetti A. Chiral non-stoichiometric ternary silver indium sulfide quantum dots: investigation on the chirality transfer by cysteine. NANOSCALE 2022; 14:12174-12182. [PMID: 35968905 DOI: 10.1039/d2nr03330e] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Chiral semiconductor quantum dots have recently received broad attention due to their promising application in several fields such as sensing and photonics. The extensive work in the last few years was focused on the observation of the chiroptical properties in binary Cd based systems. Herein, we report on the first evidence of ligand-induced chirality in silver indium sulfide semiconductor quantum dots. Ternary disulfide quantum dots are of great interest due to their remarkable optical properties and low toxicity. Non-stoichiometric silver indium sulfide quantum dots were produced via a room temperature coprecipitation in water, in the presence of cysteine as a capping agent. The obtained nanocrystals show a notable photoluminescence quantum yield of 0.24 in water dispersions. Several critical aspects of the nanocrystal growth and chemico-physical characterization, and the optimisation of the surface passivation by the chiral ligand in order to optimize the nanoparticle chirality are thoroughly investigated. Optical spectroscopy methods such as circular dichroism and luminescence as well as nuclear magnetic resonance techniques are exploited to analyze the coordination processes leading to the formation of the ligand-nanocrystal chiral interface. This study highlights the dynamic nature of the interaction between the nanocrystal surface and the chiral ligand and clarifies some fundamental aspects for the transfer and optimization of the chiroptical properties.
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Affiliation(s)
- Lorenzo Branzi
- Department of Molecular Science and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, Venezia Mestre, Italy.
| | - Finn Purcell-Milton
- School of Chemistry, CRANN and AMBER Research Centres, Trinity College Dublin, College Green, Dublin 2, Ireland.
- School of Chemical & Pharmaceutical Sciences, Technological University Dublin, Grangegorman, Dublin 2, Ireland
| | - Chiara Cressoni
- Nanomaterials Research Group, Department of Biotechnology and INSTM, RU of Verona, University of Verona, Strada le Grazie 15, Verona, Italy.
| | - Michele Back
- Department of Molecular Science and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, Venezia Mestre, Italy.
| | - Elti Cattaruzza
- Department of Molecular Science and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, Venezia Mestre, Italy.
| | - Adolfo Speghini
- Nanomaterials Research Group, Department of Biotechnology and INSTM, RU of Verona, University of Verona, Strada le Grazie 15, Verona, Italy.
| | - Yurii K Gun'ko
- School of Chemistry, CRANN and AMBER Research Centres, Trinity College Dublin, College Green, Dublin 2, Ireland.
| | - Alvise Benedetti
- Department of Molecular Science and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, Venezia Mestre, Italy.
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14
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Cai J, Zhao J, Gao X, Ma W, Meng D, Zhang H, Hao C, Sun M, Kuang H, Xu C, Xu L. Magnetic Field Tuning Ionic Current Generated by Chiromagnetic Nanofilms. ACS NANO 2022; 16:11066-11075. [PMID: 35776106 DOI: 10.1021/acsnano.2c03778] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The realization of chiral magnetic effect by macroscopically manipulating quantum states of chiral matter under the magnetic field makes a future for information transmission, memory storage, magnetic cooling materials etc., while the microscopic tiny signal differences of at the interface electrons are laborious to be discerned. Here, chiromagnetic iron oxide (Fe3O4) nanofilms were successfully prepared by modulating the magnetic and electrical transition dipoles and combined with confined ion transport, enabling magnetic field-tunable ionic currents with markedly ∼7.91-fold higher for l-tartaric acid (TA)-modified Fe3O4 nanofilms than that by d-TA. The apparent amplification results from the charge redistribution at the ferromagnetic-organic interface under the influence of the chiral magnetic effect, resulting in a significant potential difference across the nanofilms that drive ion transport in the confined environment. This strategy, on the one hand, makes it possible to efficiently characterize the electronic microimbalance state in chiral substances induced by the magnetic field and, on the other hand realizes the discrimination and highly sensitive quantitative detection of chiral drug enantiomers, which give insights for the in-depth understanding of chiral magnetic effects and efficient enantiomeric recognition.
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Affiliation(s)
- Jiarong Cai
- International Joint Research Laboratory for Biointerface and Biodetection, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Jing Zhao
- Department of Radiology, Affiliated Hospital, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Xiaoqing Gao
- Wenzhou Institute, University of Chinese Academy of Sciences, and Oujiang Laboratory, Wenzhou, Zhejiang 325001, P. R. China
| | - Wei Ma
- International Joint Research Laboratory for Biointerface and Biodetection, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Dan Meng
- International Joint Research Laboratory for Biointerface and Biodetection, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Hongyu Zhang
- International Joint Research Laboratory for Biointerface and Biodetection, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Changlong Hao
- International Joint Research Laboratory for Biointerface and Biodetection, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Maozhong Sun
- International Joint Research Laboratory for Biointerface and Biodetection, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Hua Kuang
- International Joint Research Laboratory for Biointerface and Biodetection, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Chuanlai Xu
- International Joint Research Laboratory for Biointerface and Biodetection, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Liguang Xu
- International Joint Research Laboratory for Biointerface and Biodetection, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
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15
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Sun M, Wang X, Guo X, Xu L, Kuang H, Xu C. Chirality at nanoscale for bioscience. Chem Sci 2022; 13:3069-3081. [PMID: 35414873 PMCID: PMC8926252 DOI: 10.1039/d1sc06378b] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 02/08/2022] [Indexed: 12/17/2022] Open
Abstract
In the rapidly expanding fields of nanoscience and nanotechnology, there is considerable interest in chiral nanomaterials, which are endowed with unusually strong circular dichroism. In this review, we summarize the principles of organization underlying chiral nanomaterials and generalize the recent advances in the main strategies used to fabricate these nanoparticles for bioscience applications. The creation of chirality from nanoscale building blocks has been investigated both experimentally and theoretically, and the tunability of chirality using external fields, such as light and magnetic fields, has allowed the optical activity of these materials to be controlled and their properties understood. Therefore, the specific recognition and potential applications of chiral materials in bioscience are discussed. The effects of the chirality of nanostructures on biological systems have been exploited to sense and cut molecules, for therapeutic applications, and so on. In the final part of this review, we examine the future perspectives for chiral nanomaterials in bioscience and the challenges posed by them.
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Affiliation(s)
- Maozhong Sun
- International Joint Research Laboratory for Biointerface and Biodetection, State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University Wuxi Jiangsu 214122 People's Republic of China
| | - Xiuxiu Wang
- International Joint Research Laboratory for Biointerface and Biodetection, State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University Wuxi Jiangsu 214122 People's Republic of China
| | - Xiao Guo
- International Joint Research Laboratory for Biointerface and Biodetection, State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University Wuxi Jiangsu 214122 People's Republic of China
| | - Liguang Xu
- International Joint Research Laboratory for Biointerface and Biodetection, State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University Wuxi Jiangsu 214122 People's Republic of China
| | - Hua Kuang
- International Joint Research Laboratory for Biointerface and Biodetection, State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University Wuxi Jiangsu 214122 People's Republic of China
| | - Chuanlai Xu
- International Joint Research Laboratory for Biointerface and Biodetection, State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University Wuxi Jiangsu 214122 People's Republic of China
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16
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Sujith M, Vishnu EK, Sappati S, Oliyantakath Hassan MS, Vijayan V, Thomas KG. Ligand-Induced Ground- and Excited-State Chirality in Silicon Nanoparticles: Surface Interactions Matter. J Am Chem Soc 2022; 144:5074-5086. [PMID: 35258297 DOI: 10.1021/jacs.1c13698] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Silicon-based light-emitting materials have emerged as a favorable substitute to various organic and inorganic systems due to silicon's high natural abundance, low toxicity, and excellent biocompatibility. However, efforts on the design of free-standing silicon nanoparticles with chiral non-racemic absorption and emission attributes are rather scare. Herein, we unravel the structural requirements for ligand-induced chirality in silicon-based nanomaterials by functionalizing with D- and L-isomers of a bifunctional ligand, namely, tryptophan. The structural aspects of these systems are established using high-resolution high-angle annular dark-field imaging in the scanning transmission electron microscopy mode, solid-state nuclear magnetic resonance, Fourier transform infrared, and X-ray photoelectron spectroscopy. Silicon nanoparticles capped with L- and D-isomers of tryptophan displayed positive and negative monosignated circular dichroic signals and circularly polarized luminescence indicating their ground- and excited-state chirality. Various studies supported by density functional theory calculations signify that the functionalization of indole ring nitrogen on the silicon surface plays a decisive role in modifying the chiroptical characteristics by generating emissive charge-transfer states. The chiroptical responses originate from the multipoint interactions of tryptophan with the nanoparticle surface through the indole nitrogen and -CO2- groups that can transmit an enantiomeric structural imprint on the silicon surface. However, chiroptical properties are not observed in phenylalanine- and alanine-capped silicon nanoparticles, which are devoid of Si-N bonds and chiral footprints. Thus, the ground- and excited-state chiroptics in tryptophan-capped silicon nanoparticles originates from the collective effect of ligand-bound emissive charge-transfer states and chiral footprints. Being the first report on the circularly polarized luminescence in silicon nanoparticles, this work will open newer possibilities in the field of chirality.
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Affiliation(s)
- Meleppatt Sujith
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER TVM), Vithura, Thiruvananthapuram 695551, India
| | - E Krishnan Vishnu
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER TVM), Vithura, Thiruvananthapuram 695551, India
| | - Subrahmanyam Sappati
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER TVM), Vithura, Thiruvananthapuram 695551, India
| | - Muhammed Shafeek Oliyantakath Hassan
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER TVM), Vithura, Thiruvananthapuram 695551, India
| | - Vinesh Vijayan
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER TVM), Vithura, Thiruvananthapuram 695551, India
| | - K George Thomas
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER TVM), Vithura, Thiruvananthapuram 695551, India
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17
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Forde A, Ghosh D, Kilin D, Evans AC, Tretiak S, Neukirch AJ. Induced Chirality in Halide Perovskite Clusters through Surface Chemistry. J Phys Chem Lett 2022; 13:686-693. [PMID: 35023749 DOI: 10.1021/acs.jpclett.1c04060] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Chiroptical properties are of interest for various applications, including structure determination, polarized photodetectors, and spintronics. Inducing chiroptical activity into semiconductors is challenging because of difficulties in creating asymmetric crystal structures. One promising method is to use chirality transfer by deploying chiral organic molecules as capping ligands for nanocrystals. Experimentally, chiral-capped nanocrystals show emergent chiroptical signatures, but the mechanisms for chirality transfer remain unclear. Here we utilize atomistic modeling using time-dependent density functional theory calculations to explore chirality transfer in CsPbX3 (X = Cl, I) clusters capped with chiral diaminocyclohexane (DACH) enantiomers. When DACH enantiomers are bound to the cluster surface, the perovskite optical transitions gain chiral signatures. This observed chirality transfer is best rationalized by chiral molecular dipole-cluster transition dipole coupling. With multiple DACH molecules bound to the cluster surface, anisotropy factors are found to increase proportionally to the surface ligand density, providing mechanistic insight toward improving chiroptical functionality in semiconductor nanomaterials.
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Affiliation(s)
- Aaron Forde
- Department of Materials Science and Nanotechnology, North Dakota State University, Fargo, North Dakota 58102, United States
- Theoretical Physics and Chemistry of Materials, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
- Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Dibyajyoti Ghosh
- Theoretical Physics and Chemistry of Materials, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
- Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
- Department of Materials Science and Engineering and Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, India
| | - Dmitri Kilin
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58102, United States
| | - Amanda C Evans
- Bioscience Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Sergei Tretiak
- Theoretical Physics and Chemistry of Materials, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Amanda J Neukirch
- Theoretical Physics and Chemistry of Materials, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
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18
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Kwon YH, Tannir S, Balaz M, Varga K. Apple juice and red wine induced mirror-image circular dichroism in quantum dots. Chirality 2021; 34:70-76. [PMID: 34710252 DOI: 10.1002/chir.23380] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/05/2021] [Accepted: 10/09/2021] [Indexed: 12/23/2022]
Abstract
Juices, wines, and extracts from plants contain high concentrations of various chiral compounds such as carboxylic acids or sugars. Several prior studies reported the synthesis of metallic and semiconducting nanoparticles relying on components of complex biological solutions. Herein, we present preparation of chiral CdS and CdSe quantum dots (QDs) using apple juice and red wine via phase transfer ligand exchange. Although both apple juice and red wine contain a complex mixture of chiral and achiral compounds, we have successfully used them for selective induction of predicted chiroptical properties and confirmed L-malic acid from the apple juice and L-tartaric acid from the red wine as the chiral inducers. This work illustrates the capability of using complex mixtures to construct chiral QDs with desired chiroptical properties as well as potential of QDs to selectively report a chiral molecule in a complex chiral mixture without the need for elaborate chiral recognition system.
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Affiliation(s)
- Yuri H Kwon
- Department of Molecular, Cellular, and Biomedical Sciences, University of New Hampshire, Durham, NH, USA
| | - Shambhavi Tannir
- Department of Chemistry, University of Wyoming, Laramie, WY, USA
| | - Milan Balaz
- Integrated Science and Engineering Division, Underwood International College, Yonsei University, Seoul, Republic of Korea
| | - Krisztina Varga
- Department of Molecular, Cellular, and Biomedical Sciences, University of New Hampshire, Durham, NH, USA
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19
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Furlan de Oliveira R, Montes-García V, Ciesielski A, Samorì P. Harnessing selectivity in chemical sensing via supramolecular interactions: from functionalization of nanomaterials to device applications. MATERIALS HORIZONS 2021; 8:2685-2708. [PMID: 34605845 DOI: 10.1039/d1mh01117k] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Chemical sensing is a strategic field of science and technology ultimately aiming at improving the quality of our lives and the sustainability of our Planet. Sensors bear a direct societal impact on well-being, which includes the quality and composition of the air we breathe, the water we drink, and the food we eat. Pristine low-dimensional materials are widely exploited as highly sensitive elements in chemical sensors, although they suffer from lack of intrinsic selectivity towards specific analytes. Here, we showcase the most recent strategies on the use of (supra)molecular interactions to harness the selectivity of suitably functionalized 0D, 1D, and 2D low-dimensional materials for chemical sensing. We discuss how the design and selection of receptors via machine learning and artificial intelligence hold a disruptive potential in chemical sensing, where selectivity is achieved by the design and high-throughput screening of large libraries of molecules exhibiting a set of affinity parameters that dictates the analyte specificity. We also discuss the importance of achieving selectivity along with other relevant characteristics in chemical sensing, such as high sensitivity, response speed, and reversibility, as milestones for true practical applications. Finally, for each distinct class of low-dimensional material, we present the most suitable functionalization strategies for their incorporation into efficient transducers for chemical sensing.
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Affiliation(s)
| | - Verónica Montes-García
- Université de Strasbourg and CNRS, ISIS, 8 allée Gaspard Monge, 67000 Strasbourg, France.
| | - Artur Ciesielski
- Université de Strasbourg and CNRS, ISIS, 8 allée Gaspard Monge, 67000 Strasbourg, France.
| | - Paolo Samorì
- Université de Strasbourg and CNRS, ISIS, 8 allée Gaspard Monge, 67000 Strasbourg, France.
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20
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Wu Y, Shao X, Zhou Y, Jiang S, Zhang T, Yan Y. Effect of α-substitute group on the chirality of monocarboxylic acid stabilized CdSe nanocrystals. NANOTECHNOLOGY 2021; 32:375701. [PMID: 34087813 DOI: 10.1088/1361-6528/ac084c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 06/03/2021] [Indexed: 06/12/2023]
Abstract
The effect ofα-substitute groups at the asymmetric carbon of chiral monocarboxylic acid ligand, on the chirality of CdSe nanocrystals (NCs) was studied. When the substitution groups have strong electron-withdrawing capability, the CdSe NCs displayed an enhanced chirality where theg-factors were comparable to those with dicarboxylic chiral ligands. In addition, adding ethanol was demonstrated as an effective way to stabilize NCs, however, completely oppositeg-factor evolution behavior was found for NCs with differentα-substituted ligands. Specifically, theg-factor has increased/decreased with strong/weak electron-withdrawingα-substitute groups probably due to the different intermolecular hydrogen bonding between carboxylic acids and ethanol.
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Affiliation(s)
- Yue Wu
- Tianjin Key Laboratory of Applied Catalysis Science and Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300354, People's Republic of China
- 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
| | - 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
- 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
| | - Yi Zhou
- 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
- University of Chinese Academy of Sciences, Beijing 100049, 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
| | - 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
| | - Yong Yan
- 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
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
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21
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Hou SS, Liu Y, Zhang WX, Zhang XD. Separating and trapping of chiral nanoparticles with dielectric photonic crystal slabs. OPTICS EXPRESS 2021; 29:15177-15189. [PMID: 33985222 DOI: 10.1364/oe.423243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 04/21/2021] [Indexed: 06/12/2023]
Abstract
Chiral separation is a crucial step in many chemical synthesis processes, particularly for pharmaceuticals. Here we present a novel method for the realization of both separating and trapping of enantiomers using the dielectric photonic crystal (PhC) slabs, which possess quasi-fourfold degenerate Bloch modes (overlapping double degenerate transverse-electric-like and transverse-magnetic-like modes). Based on the designed structure, a large gradient of optical chirality appears near the PhC slab, leading to the extreme enhancement of chiral optical forces about 3 orders of magnitude larger than those obtained with circularly polarized lights. In this case, our method provides a reference for realizing all-optical enantiopure syntheses.
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22
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Hananel U, Ben-Moshe A, Tal D, Markovich G. Enantiomeric Control of Intrinsically Chiral Nanocrystals. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1905594. [PMID: 31782846 DOI: 10.1002/adma.201905594] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 10/26/2019] [Indexed: 06/10/2023]
Abstract
The chiral aspect of inorganic crystals that crystallize in chiral space groups has been largely ignored until recently, partly due to difficulties in characterizing the chiroptical properties of bulk crystals, and also due to the difficulty in separating (sub)micrometer-scale chiral crystal enantiomers. In recent years, the colloidal synthesis of intrinsically chiral nanocrystals (NCs) of several chiral inorganic compounds with significant enantiomeric excess has been demonstrated. This is achieved through the use of chiral molecular ligands, which bind to the atomic/ionic components of the crystals, preferentially forming one crystal enantiomorph. Here, recent progress on several aspects of these NCs is described, including the connection between ligand structure and its ability to direct NC handedness, chiral amplification in the synthesis leading to enantiopure NC samples, spontaneous symmetry breaking, the formation of NCs with chiral shapes, the connection between lattice and shape chirality and mixed contributions of atomic-scale and shape chirality to the chiroptical properties.
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Affiliation(s)
- Uri Hananel
- School of Chemistry, Tel Aviv University, Tel Aviv, 6997801, Israel
| | - Assaf Ben-Moshe
- Department of Chemistry, University of California, Berkeley, Berkeley, CA, 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Daniel Tal
- Ironi Dalet Tel Aviv High School, Tel Aviv, 6226205, Israel
| | - Gil Markovich
- School of Chemistry, Tel Aviv University, Tel Aviv, 6997801, Israel
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23
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Hao C, Xu L, Kuang H, Xu C. Artificial Chiral Probes and Bioapplications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1802075. [PMID: 30656745 DOI: 10.1002/adma.201802075] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Revised: 06/29/2018] [Indexed: 06/09/2023]
Abstract
The development of artificial chiral architectures, especially chiral inorganic nanostructures, has greatly promoted research into chirality in nanoscience. The nanoscale chirality of artificial chiral nanostructures offers many new application opportunities, including chiral catalysis, asymmetric synthesis, chiral biosensing, and others that may not be allowed by natural chiral molecules. Herein, the progress achieved during the past decade in chirality-associated biological applications (biosensing, biolabeling, and bioimaging) combined with individual chiral nanostructures (such as chiral semiconductor nanoparticles and chiral metal nanoparticles) or chiral assemblies is discussed.
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Affiliation(s)
- Changlong Hao
- International Joint Research Laboratory for Biointerface and Biodetection, State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
| | - Liguang Xu
- International Joint Research Laboratory for Biointerface and Biodetection, State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
| | - Hua Kuang
- International Joint Research Laboratory for Biointerface and Biodetection, State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
| | - Chuanlai Xu
- International Joint Research Laboratory for Biointerface and Biodetection, State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
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24
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Li Y, Higaki T, Du X, Jin R. Chirality and Surface Bonding Correlation in Atomically Precise Metal Nanoclusters. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1905488. [PMID: 32181554 DOI: 10.1002/adma.201905488] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 11/16/2019] [Indexed: 05/24/2023]
Abstract
Chirality is ubiquitous in nature and occurs at all length scales. The development of applications for chiral nanostructures is rising rapidly. With the recent achievements of atomically precise nanochemistry, total structures of ligand-protected Au and other metal nanoclusters (NCs) are successfully obtained, and the origins of chirality are discovered to be associated with different parts of the cluster, including the surface ligands (e.g., swirl patterns), the organic-inorganic interface (e.g., helical stripes), and the kernel. Herein, a unified picture of metal-ligand surface bonding-induced chirality for the nanoclusters is proposed. The different bonding modes of M-X (where M = metal and X = the binding atom of ligand) lead to different surface structures on nanoclusters, which in turn give rise to various characteristic features of chirality. A comparison of Au-thiolate NCs with Au-phosphine ones further reveals the important roles of surface bonding. Compared to the Au-thiolate NCs, the Ag/Cu/Cd-thiolate systems exhibit different coordination modes between the metal and the thiolate. Other than thiolate and phosphine ligands, alkynyls are also briefly discussed. Several methods of obtaining chiroptically active nanoclusters are introduced, such as enantioseparation by high-performance liquid chromatography and enantioselective synthesis. Future perspectives on chiral NCs are also proposed.
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Affiliation(s)
- Yingwei Li
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
| | - Tatsuya Higaki
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
| | - Xiangsha Du
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
| | - Rongchao Jin
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
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25
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Hao J, Li Y, Miao J, Liu R, Li J, Liu H, Wang Q, Liu H, Delville MH, He T, Wang K, Zhu X, Cheng J. Ligand-Induced Chirality in Asymmetric CdSe/CdS Nanostructures: A Close Look at Chiral Tadpoles. ACS NANO 2020; 14:10346-10358. [PMID: 32806030 DOI: 10.1021/acsnano.0c03909] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Ligand-induced chirality in asymmetric CdSe/CdS core-shell nanocrystals (NCs) has been extensively applied in chiral biosensors, regioselective syntheses and assemblies, circularly polarized luminescence (CPL), and chiroptic-based devices due to their excellent physiochemical properties, such as the tunable quantum confinement effects, surface functionality, and chemical stability. Herein, we present CdSe/CdS NCs with various morphologies such as nanoflowers, tadpoles, and dot/rods (DRs) with chirality induced by surface chiral ligands. The observed circular dichroism (CD) and CPL activities are closely associated with the geometrical characteristics of the nanostructures, such as the shell thickness and the aspect ratio of the CdSe/CdS NCs. Furthermore, in situ observations of the growth of tadpoles with a single tail indicate that the CD response is mainly attributed to the CdS shell, which has a maximum tail length of ∼45 nm (approximately λ/10 of the incident light wavelength). On the other hand, the CPL activity is only related to the CdSe core, and the activity benefits from a thin CdS shell with a relatively high photoluminescence quantum yield (QY). Further theoretical models demonstrated the aspect-ratio-dependent g-factor and QY variations in these asymmetric nanostructures. These findings provide insights into not only the asymmetric synthesis of CdSe/CdS NCs, but also the rational design of CdSe/CdS nanostructures with tunable CD and CPL activities.
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Affiliation(s)
- Junjie Hao
- School of Materials Science and Engineering, Hubei University, Wuhan 430062, China
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
- CNRS, Univ. Bordeaux, Bordeaux INP, ICMCB, UMR 5026, Pessac F-33608, France
| | - Yiwen Li
- School of Materials Science and Engineering, Hubei University, Wuhan 430062, China
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Jun Miao
- Institute of Energy and Climate Research (IEK) Photovoltaics, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Rulin Liu
- Shenzhen Institute of Artificial Intelligence and Robotics for Society (AIRS), Shenzhen, Guangdong 518172, China
| | - Jiagen Li
- Shenzhen Institute of Artificial Intelligence and Robotics for Society (AIRS), Shenzhen, Guangdong 518172, China
| | - Haochen Liu
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Qiushi Wang
- School of Materials Science and Engineering, Hubei University, Wuhan 430062, China
| | - Huan Liu
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | | | - Tingchao He
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Kai Wang
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xi Zhu
- Shenzhen Institute of Artificial Intelligence and Robotics for Society (AIRS), Shenzhen, Guangdong 518172, China
| | - Jiaji Cheng
- School of Materials Science and Engineering, Hubei University, Wuhan 430062, China
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26
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Zhu F, Wang J, Xie S, Zhu Y, Wang L, Xu J, Liao S, Ren J, Liu Q, Yang H, Chen X. l-Pyroglutamic Acid-Modified CdSe/ZnS Quantum Dots: A New Fluorescence-Responsive Chiral Sensing Platform for Stereospecific Molecular Recognition. Anal Chem 2020; 92:12040-12048. [DOI: 10.1021/acs.analchem.0c02668] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Fawei Zhu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China
| | - Jing Wang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China
| | - Siqi Xie
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China
| | - Yuqiu Zhu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China
| | - Lumin Wang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China
| | - Jinju Xu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China
| | - Sen Liao
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China
| | - Jiwei Ren
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China
| | - Qi Liu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China
| | - Hua Yang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China
| | - Xiaoqing Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China
- Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety Central South University, Changsha 410083, Hunan, China
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27
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Li G, Fei X, Liu H, Gao J, Nie J, Wang Y, Tian Z, He C, Wang JL, Ji C, Oron D, Yang G. Fluorescence and Optical Activity of Chiral CdTe Quantum Dots in Their Interaction with Amino Acids. ACS NANO 2020; 14:4196-4205. [PMID: 32298573 PMCID: PMC7467813 DOI: 10.1021/acsnano.9b09101] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Accepted: 04/16/2020] [Indexed: 05/21/2023]
Abstract
Ligand-induced chirality in semiconducting nanocrystals has been the subject of extensive study in the past few years and shows potential applications in optics and biology. Yet, the origin of the chiroptical effect in semiconductor nanoparticles is still not fully understood. Here, we examine the effect of the interaction with amino acids on both the fluorescence and the optical activity of chiral semiconductor quantum dots (QDs). A significant fluorescence enhancement is observed for l/d-Cys-CdTe QDs upon interaction with all the tested amino acids, indicating suppression of nonradiative pathways as well as the passivation of surface trap sites brought via the interaction of the amino group with the CdTe QDs' surface. Heterochiral amino acids are shown to weaken the circular dichroism (CD) signal, which may be attributed to a different binding configuration of cysteine molecules on the QDs' surface. Furthermore, a red shift of both CD and fluorescence signals in l/d-Cys-CdTe QDs is only observed upon adding cysteine, while other tested amino acids do not exhibit such an effect. We speculate that the thiol group induces orbital hybridization of the highest occupied molecular orbital (HOMOs) of cysteine and the valence band of CdTe QDs, leading to the decrease of the energy band gap and a concomitant red shift of CD and fluorescence spectra. This is further verified by density functional theory calculations. Both the experimental and theoretical findings indicate that the addition of ligands that do not "directly" interact with the valence band (VB) of the QD (noncysteine moieties) changes the QD photophysical properties, as it probably modifies the way cysteine is bound to the surface. Hence, we conclude that it is not only the chemistry of the amino acid ligand that affects both CD and PL but also the exact geometry of binding that modifies these properties. Understanding the relationship between the QD's surface and chiral amino acid thus provides an additional perspective on the fundamental origin of induced chiroptical effects in semiconductor nanoparticles, potentially enabling us to optimize the design of chiral semiconductor QDs for chiroptic applications.
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Affiliation(s)
- Guangmin Li
- College
of Science, Tianjin Chengjian University, Tianjin 300384, China
- E-mail: ;
| | - Xuening Fei
- College
of Science, Tianjin Chengjian University, Tianjin 300384, China
- E-mail:
| | - Hongfei Liu
- College
of Science, Tianjin Chengjian University, Tianjin 300384, China
| | - Jing Gao
- College
of Science, Tianjin Chengjian University, Tianjin 300384, China
| | - Jiayang Nie
- College
of Science, Tianjin Chengjian University, Tianjin 300384, China
| | - Yuanbo Wang
- College
of Science, Tianjin Chengjian University, Tianjin 300384, China
| | - Zhaodong Tian
- College
of Science, Tianjin Chengjian University, Tianjin 300384, China
| | - Caicai He
- College
of Science, Tianjin Chengjian University, Tianjin 300384, China
| | - Jiang-Long Wang
- Hebei
Key Lab of Optic-Electronic Information and Materials, College of
Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Chao Ji
- Key
Laboratory of Catalysis, Center Tech Tianjin
Chemical Research and Design Institute Co., Ltd., Tianjin 300131, China
| | - Dan Oron
- Department
of Physics of Complex Systems, Weizmann
Institute of Science, Rehovot 76100, Israel
| | - Gaoling Yang
- Department
of Physics of Complex Systems, Weizmann
Institute of Science, Rehovot 76100, Israel
- E-mail:
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28
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Kuznetsova VA, Mates-Torres E, Prochukhan N, Marcastel M, Purcell-Milton F, O'Brien J, Visheratina AK, Martinez-Carmona M, Gromova Y, Garcia-Melchor M, Gun'ko YK. Effect of Chiral Ligand Concentration and Binding Mode on Chiroptical Activity of CdSe/CdS Quantum Dots. ACS NANO 2019; 13:13560-13572. [PMID: 31697474 DOI: 10.1021/acsnano.9b07513] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Chiroptically active fluorescent semiconductor nanocrystals, quantum dots (QDs), are of high interest from a theoretical and technological point of view, because they are promising candidates for a range of potential applications. Optical activity can be induced in QDs by capping them with chiral molecules, resulting in circular dichroism (CD) signals in the range of the QD ultraviolet-visible (UV-vis) absorption. However, the effects of the chiral ligand concentration and binding modes on the chiroptical properties of QDs are still poorly understood. In the present study, we report the strong influence of the concentration of a chiral amino acid (cysteine) on its binding modes upon the surface of CdSe/CdS QDs, resulting in varying QD chiroptical activity and corresponding CD signals. Importantly, we demonstrate that the increase of cysteine concentration is accompanied by the growth of the QD CD intensity, reaching a certain critical point, after which it starts to decrease. The intensity of the CD signal varies by almost an order of magnitude across this range. Nuclear magnetic resonance and Fourier transform infrared data, supported by density functional theory calculations, reveal a change in the binding mode of cysteine molecules from tridentate to bidentate when going from low to high concentrations, which results in a change in the CD intensity. Hence, we conclude that the chiroptical properties of QDs are dependent on the concentration and binding modes of the capping chiral ligands. These findings are very important for understanding chiroptical phenomena at the nanoscale and for the design of advanced optically active nanomaterials.
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Affiliation(s)
- Vera A Kuznetsova
- School of Chemistry, CRANN and AMBER Research Centres , Trinity College Dublin , College Green, Dublin 2 , Ireland
- ITMO University , St. Petersburg 197101 , Russia
| | - Eric Mates-Torres
- School of Chemistry, CRANN and AMBER Research Centres , Trinity College Dublin , College Green, Dublin 2 , Ireland
| | - Nadezda Prochukhan
- School of Chemistry, CRANN and AMBER Research Centres , Trinity College Dublin , College Green, Dublin 2 , Ireland
| | - Madeline Marcastel
- School of Chemistry, CRANN and AMBER Research Centres , Trinity College Dublin , College Green, Dublin 2 , Ireland
| | - Finn Purcell-Milton
- School of Chemistry, CRANN and AMBER Research Centres , Trinity College Dublin , College Green, Dublin 2 , Ireland
- BEACON, Bioeconomy SFI Research Centre , University College Dublin , Dublin 4 , Ireland
| | - John O'Brien
- School of Chemistry, CRANN and AMBER Research Centres , Trinity College Dublin , College Green, Dublin 2 , Ireland
| | | | | | - Yulia Gromova
- School of Chemistry, CRANN and AMBER Research Centres , Trinity College Dublin , College Green, Dublin 2 , Ireland
| | - Max Garcia-Melchor
- School of Chemistry, CRANN and AMBER Research Centres , Trinity College Dublin , College Green, Dublin 2 , Ireland
| | - Yurii K Gun'ko
- School of Chemistry, CRANN and AMBER Research Centres , Trinity College Dublin , College Green, Dublin 2 , Ireland
- BEACON, Bioeconomy SFI Research Centre , University College Dublin , Dublin 4 , Ireland
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29
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Arcudi F, Westmoreland DE, Weiss EA. Colloidally Stable CdS Quantum Dots in Water with Electrostatically Stabilized Weak-Binding, Sulfur-Free Ligands. Chemistry 2019; 25:14469-14474. [PMID: 31486120 DOI: 10.1002/chem.201903908] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Indexed: 01/19/2023]
Abstract
Colloidal quantum dot (QD) photocatalysts have the electrochemical and optical properties to be highly effective for a range of redox reactions. QDs are proven photo-redox catalysts for a variety of reactions in organic solvents but are less prominent for aqueous reactions. Aqueous QD photocatalysts require hydrophilic ligand shells that provide long-term colloidal stability but are not so tight-binding as to prevent catalytic substrates from accessing the QD surface. Common thiolate ligands, which also poison many co-catalysts and undergo photo-oxidative desorption, are therefore often not an option. This paper describes a framework for the design of water-solubilizing ligands that are in dynamic exchange on and off the QD surface, but still provide long-term colloidal stability to CdS QDs. The binding affinity and inter-ligand electrostatic interactions of a bifunctional ligand, aminoethyl phosphonic acid (AEP), are tuned with the pH of the dispersion. The key to colloidal stability is electrostatic stabilization of the monolayer. This work demonstrates a means of mimicking the stabilizing power of a thiolate-bound ligand with a zwitterionic tail group, but without the thiolate binding group.
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Affiliation(s)
- Francesca Arcudi
- Department of Chemistry, Northwestern University, 2145 Sheridan Rd., Evanston, IL-60208-3113, USA
| | - Dana Emily Westmoreland
- Department of Chemistry, Northwestern University, 2145 Sheridan Rd., Evanston, IL-60208-3113, USA
| | - Emily Allyn Weiss
- Department of Chemistry, Northwestern University, 2145 Sheridan Rd., Evanston, IL-60208-3113, USA
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30
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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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31
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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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32
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Hao C, Gao R, Li Y, Xu L, Sun M, Xu C, Kuang H. Chiral Semiconductor Nanoparticles for Protein Catalysis and Profiling. Angew Chem Int Ed Engl 2019; 58:7371-7374. [DOI: 10.1002/anie.201902673] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Indexed: 12/17/2022]
Affiliation(s)
- Changlong Hao
- Key Lab of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, International Joint Research Laboratory for Biointerface and BiodetectionState Key Lab of Food Science and TechnologySchool of Food Science and TechnologyJiangnan University Wuxi Jiangsu 214122 P. R. China
| | - Rui Gao
- Key Lab of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, International Joint Research Laboratory for Biointerface and BiodetectionState Key Lab of Food Science and TechnologySchool of Food Science and TechnologyJiangnan University Wuxi Jiangsu 214122 P. R. China
| | - Yue Li
- Key Lab of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, International Joint Research Laboratory for Biointerface and BiodetectionState Key Lab of Food Science and TechnologySchool of Food Science and TechnologyJiangnan University Wuxi Jiangsu 214122 P. R. China
| | - Liguang Xu
- Key Lab of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, International Joint Research Laboratory for Biointerface and BiodetectionState Key Lab of Food Science and TechnologySchool of Food Science and TechnologyJiangnan University Wuxi Jiangsu 214122 P. R. China
| | - Maozhong Sun
- Key Lab of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, International Joint Research Laboratory for Biointerface and BiodetectionState Key Lab of Food Science and TechnologySchool of Food Science and TechnologyJiangnan University Wuxi Jiangsu 214122 P. R. China
| | - Chuanlai Xu
- Key Lab of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, International Joint Research Laboratory for Biointerface and BiodetectionState Key Lab of Food Science and TechnologySchool of Food Science and TechnologyJiangnan University Wuxi Jiangsu 214122 P. R. China
| | - Hua Kuang
- Key Lab of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, International Joint Research Laboratory for Biointerface and BiodetectionState Key Lab of Food Science and TechnologySchool of Food Science and TechnologyJiangnan University Wuxi Jiangsu 214122 P. R. China
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33
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Hao C, Gao R, Li Y, Xu L, Sun M, Xu C, Kuang H. Chiral Semiconductor Nanoparticles for Protein Catalysis and Profiling. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201902673] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Changlong Hao
- Key Lab of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, International Joint Research Laboratory for Biointerface and BiodetectionState Key Lab of Food Science and TechnologySchool of Food Science and TechnologyJiangnan University Wuxi Jiangsu 214122 P. R. China
| | - Rui Gao
- Key Lab of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, International Joint Research Laboratory for Biointerface and BiodetectionState Key Lab of Food Science and TechnologySchool of Food Science and TechnologyJiangnan University Wuxi Jiangsu 214122 P. R. China
| | - Yue Li
- Key Lab of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, International Joint Research Laboratory for Biointerface and BiodetectionState Key Lab of Food Science and TechnologySchool of Food Science and TechnologyJiangnan University Wuxi Jiangsu 214122 P. R. China
| | - Liguang Xu
- Key Lab of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, International Joint Research Laboratory for Biointerface and BiodetectionState Key Lab of Food Science and TechnologySchool of Food Science and TechnologyJiangnan University Wuxi Jiangsu 214122 P. R. China
| | - Maozhong Sun
- Key Lab of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, International Joint Research Laboratory for Biointerface and BiodetectionState Key Lab of Food Science and TechnologySchool of Food Science and TechnologyJiangnan University Wuxi Jiangsu 214122 P. R. China
| | - Chuanlai Xu
- Key Lab of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, International Joint Research Laboratory for Biointerface and BiodetectionState Key Lab of Food Science and TechnologySchool of Food Science and TechnologyJiangnan University Wuxi Jiangsu 214122 P. R. China
| | - Hua Kuang
- Key Lab of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, International Joint Research Laboratory for Biointerface and BiodetectionState Key Lab of Food Science and TechnologySchool of Food Science and TechnologyJiangnan University Wuxi Jiangsu 214122 P. R. China
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34
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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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35
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Wu D, Tan W, Li H, Lei Z, Deng L, Kong Y. A facile route to prepare functional mesoporous organosilica spheres with electroactive units for chiral recognition of amino acids. Analyst 2019; 144:543-549. [DOI: 10.1039/c8an01519h] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Functional mesoporous organosilica spheres with electroactive units were prepared for chiral recognition of amino acids.
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Affiliation(s)
- Datong Wu
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center
- School of Petrochemical Engineering
- Changzhou University
- Changzhou 213164
- China
| | - Wensheng Tan
- Changzhou Key Laboratory of Large Plastic Parts Intelligence Manufacturing
- Changzhou College of Information Technology
- Changzhou
- China
| | - Hongda Li
- Changzhou Key Laboratory of Large Plastic Parts Intelligence Manufacturing
- Changzhou College of Information Technology
- Changzhou
- China
| | - Zhangchen Lei
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center
- School of Petrochemical Engineering
- Changzhou University
- Changzhou 213164
- China
| | - Linhong Deng
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center
- School of Petrochemical Engineering
- Changzhou University
- Changzhou 213164
- China
| | - Yong Kong
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center
- School of Petrochemical Engineering
- Changzhou University
- Changzhou 213164
- China
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36
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Kuno J, Imamura Y, Katouda M, Tashiro M, Kawai T, Nakashima T. Inversion of Optical Activity in the Synthesis of Mercury Sulfide Nanoparticles: Role of Ligand Coordination. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jumpei Kuno
- Division of Materials Science; Nara Institute of Science and Technology (NAIST); 8916-5 Takayama, Ikoma Nara 630-0192 Japan
| | - Yutaka Imamura
- Department of Chemistry; Graduate School of Science and Engineering; Tokyo Metropolitan University, Hachioji; Tokyo 192-0397 Japan
| | - Michio Katouda
- Research Institute for Science and Engineering; Waseda University; 3-4-1 Okubo, Shinjuku-ku Tokyo, 169- 8555 Japan
| | - Motomichi Tashiro
- Department of Applied Chemistry; Toyo University; Kujirai 2100 Kawagoe Saitama 350-8585 Japan
| | - Tsuyoshi Kawai
- Division of Materials Science; Nara Institute of Science and Technology (NAIST); 8916-5 Takayama, Ikoma Nara 630-0192 Japan
| | - Takuya Nakashima
- Division of Materials Science; Nara Institute of Science and Technology (NAIST); 8916-5 Takayama, Ikoma Nara 630-0192 Japan
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Kuno J, Imamura Y, Katouda M, Tashiro M, Kawai T, Nakashima T. Inversion of Optical Activity in the Synthesis of Mercury Sulfide Nanoparticles: Role of Ligand Coordination. Angew Chem Int Ed Engl 2018; 57:12022-12026. [DOI: 10.1002/anie.201807191] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Jumpei Kuno
- Division of Materials Science; Nara Institute of Science and Technology (NAIST); 8916-5 Takayama, Ikoma Nara 630-0192 Japan
| | - Yutaka Imamura
- Department of Chemistry; Graduate School of Science and Engineering; Tokyo Metropolitan University, Hachioji; Tokyo 192-0397 Japan
| | - Michio Katouda
- Research Institute for Science and Engineering; Waseda University; 3-4-1 Okubo, Shinjuku-ku Tokyo, 169- 8555 Japan
| | - Motomichi Tashiro
- Department of Applied Chemistry; Toyo University; Kujirai 2100 Kawagoe Saitama 350-8585 Japan
| | - Tsuyoshi Kawai
- Division of Materials Science; Nara Institute of Science and Technology (NAIST); 8916-5 Takayama, Ikoma Nara 630-0192 Japan
| | - Takuya Nakashima
- Division of Materials Science; Nara Institute of Science and Technology (NAIST); 8916-5 Takayama, Ikoma Nara 630-0192 Japan
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38
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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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39
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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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40
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Cheng J, Hao J, Liu H, Li J, Li J, Zhu X, Lin X, Wang K, He T. Optically Active CdSe-Dot/CdS-Rod Nanocrystals with Induced Chirality and Circularly Polarized Luminescence. ACS NANO 2018; 12:5341-5350. [PMID: 29791135 DOI: 10.1021/acsnano.8b00112] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Ligand-induced chirality in semiconductor nanocrystals (NCs) has attracted attention because of the tunable optical properties of the NCs. Induced circular dichroism (CD) has been observed in CdX (X = S, Se, Te) NCs and their hybrids, but circularly polarized luminescence (CPL) in these fluorescent nanomaterials has been seldom reported. Herein, we describe the successful preparation of l- and d-cysteine-capped CdSe-dot/CdS-rods (DRs) with tunable CD and CPL behaviors and a maximum anisotropic factor ( glum) of 4.66 × 10-4. The observed CD and CPL activities are sensitive to the relative absorption ratio of the CdS shell to the CdSe core, suggesting that the anisotropic g-factors in both CD and CPL increase to some extent for a smaller shell-to-core absorption ratio. In addition, the molar ratio of chiral cysteine to the DRs is investigated. Instead of enhancing the chiral interactions between the chiral molecules and DRs, an excess of cysteine molecules in aqueous solution inhibits both the CD and CPL activities. Such chiral and emissive NCs provide an ideal platform for the rational design of semiconductor nanomaterials with chiroptical properties.
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Affiliation(s)
- Jiaji Cheng
- College of Physics and Energy , Shenzhen University , Shenzhen 518060 , China
| | - Junjie Hao
- Department of Electrical and Electronic Engineering , Southern University of Science and Technology , Shenzhen 518055 , China
| | - Haochen Liu
- Department of Electrical and Electronic Engineering , Southern University of Science and Technology , Shenzhen 518055 , China
| | - Jiagen Li
- School of Science and Engineering , The Chinese University of Hong Kong , Shenzhen 518172 , China
| | - Junzi Li
- College of Physics and Energy , Shenzhen University , Shenzhen 518060 , China
| | - Xi Zhu
- School of Science and Engineering , The Chinese University of Hong Kong , Shenzhen 518172 , China
| | - Xiaodong Lin
- College of Physics and Energy , Shenzhen University , Shenzhen 518060 , China
| | - Kai Wang
- Department of Electrical and Electronic Engineering , Southern University of Science and Technology , Shenzhen 518055 , China
| | - Tingchao He
- College of Physics and Energy , Shenzhen University , Shenzhen 518060 , China
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41
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Puri M, Ferry VE. Circular Dichroism of CdSe Nanocrystals Bound by Chiral Carboxylic Acids. ACS NANO 2017; 11:12240-12246. [PMID: 29164858 DOI: 10.1021/acsnano.7b05690] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Chiral semiconductor nanocrystals, or quantum dots (QDs), are promising materials for applications in biological sensing, photonics, and spin-polarized devices. Many of these applications rely on large dissymmetry, or g-factors, the difference in absorbance between left- and right-handed circularly polarized light compared to the unpolarized absorbance. The majority of chiral QDs, specifically CdSe, reported to date have used thiolated amino acid ligands to introduce chirality onto the nanoparticles, but these systems have ultimately reported small g-factors of ∼2 × 10-4. In an effort to realize chiral CdSe QDs with higher g-factors and to expand the set of designer chiral semiconductor nanocrystals, we have employed chiral carboxylic acids as a distinct class of ligands for chiral CdSe nanoparticles. Through this family of chiral carboxylic acid ligands, we performed a direct comparison between carboxylate-bound and thiolate-bound chiral CdSe QDs. Spectral analysis revealed that the resulting circular dichroism shifts originate from the splitting of the exciton by the ligand-nanocrystal interaction. Subsequent examination of a series of chiral carboxylic acid ligands revealed a 30-fold range in g-factor through relatively small changes in the structure of the ligand. Finally, we showed that increasing the number of stereocenters on the ligand can further enhance the dissymmetry factors. This versatile and tunable combination of nanocrystals and ligands will inform future designs of chiral nanomaterials and their applications.
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Affiliation(s)
- Mayank Puri
- Department of Chemical Engineering and Materials Science University of Minnesota , 421 Washington Avenue SE, Minneapolis, Minnesota 55455, United States
| | - Vivian E Ferry
- Department of Chemical Engineering and Materials Science University of Minnesota , 421 Washington Avenue SE, Minneapolis, Minnesota 55455, United States
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