1
|
Li H, Gao X, Zhang C, Ji Y, Hu Z, Wu X. Gold-Nanoparticle-Based Chiral Plasmonic Nanostructures and Their Biomedical Applications. Biosensors (Basel) 2022; 12:bios12110957. [PMID: 36354466 PMCID: PMC9688444 DOI: 10.3390/bios12110957] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/21/2022] [Accepted: 10/31/2022] [Indexed: 05/27/2023]
Abstract
As chiral antennas, plasmonic nanoparticles (NPs) can enhance chiral responses of chiral materials by forming hybrid structures and improving their own chirality preference as well. Chirality-dependent properties of plasmonic NPs broaden application potentials of chiral nanostructures in the biomedical field. Herein, we review the wet-chemical synthesis and self-assembly fabrication of gold-NP-based chiral nanostructures. Discrete chiral NPs are mainly obtained via the seed-mediated growth of achiral gold NPs under the guide of chiral molecules during growth. Irradiation with chiral light during growth is demonstrated to be a promising method for chirality control. Chiral assemblies are fabricated via the bottom-up assembly of achiral gold NPs using chiral linkers or guided by chiral templates, which exhibit large chiroplasmonic activities. In describing recent advances, emphasis is placed on the design and synthesis of chiral nanostructures with the tuning and amplification of plasmonic circular dichroism responses. In addition, the review discusses the most recent or even emerging trends in biomedical fields from biosensing and imaging to disease diagnosis and therapy.
Collapse
Affiliation(s)
- Hanbo Li
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, China
- School of Nanoscience and Technology, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Xinshuang Gao
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, China
- School of Nanoscience and Technology, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Chenqi Zhang
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, China
- School of Nanoscience and Technology, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Yinglu Ji
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Zhijian Hu
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Xiaochun Wu
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, China
- School of Nanoscience and Technology, University of the Chinese Academy of Sciences, Beijing 100049, China
| |
Collapse
|
2
|
Wen X, Wang S, Liu R, Duan R, Hu S, Jiao T, Zhang L, Liu M. Selenocystine and Photo-Irradiation Directed Growth of Helically Grooved Gold Nanoarrows. Small 2022; 18:e2104301. [PMID: 34825484 DOI: 10.1002/smll.202104301] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 09/28/2021] [Indexed: 06/13/2023]
Abstract
The fabrication of discrete nanostructures with both plasmonic circular dichroism (PCD) and chiral features is still a challenge. Here, gold nanoarrows (GNAs) with both chiroptical responses and chiral morphologies are achieved by using L-selenocystine (L-SeCys2 ) as a chiral inducer. While L-SeCys2 generates GNAs with a weak PCD signal, the irradiated L-SeCys2 (irr-L-SeCys2 ) leads to GNAs with featured helical grooves (HeliGNAs) accompanying with a strong PCD signal. It is revealed that when L-SeCys2 is photo-irradiated, the emergence of selenyl radicals plays an important role in the formation of HeliGNAs and enhancement of the chiroptical signal. In comparison with L-SeCys2 and the other kinds of sulfur-containing amino acids, the formation mechanism of helical grooves on the surface of GNAs is proposed. Both HeliGNAs and GNAs are used to discriminate amino acids by utilizing surface enhanced Raman scattering (SERS) effect. In the presence of either GNAs or HeliGNAs as the substrate, Fmoc-L-Phe shows more significant SERS than Fmoc-D-Phe. This study may advance the design of discrete plasmonic nanomaterials with both chiral morphology and potential applications in discrimination of chiral molecules.
Collapse
Affiliation(s)
- Xin Wen
- Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, 066004, P. R. China
- CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Song Wang
- CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Rulin Liu
- Shenzhen Institute of Artificial Intelligence and Robotics for Society (AIRS), Shenzhen, 518172, P. R. China
| | - Ran Duan
- Key Laboratory of Photochemistry Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Song Hu
- CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Tifeng Jiao
- Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, 066004, P. R. China
| | - Li Zhang
- CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Minghua Liu
- CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| |
Collapse
|
3
|
Severoni E, Maniappan S, Liz-Marzán LM, Kumar J, García de Abajo FJ, Galantini L. Plasmon-Enhanced Optical Chirality through Hotspot Formation in Surfactant-Directed Self-Assembly of Gold Nanorods. ACS Nano 2020; 14:16712-16722. [PMID: 33232119 DOI: 10.1021/acsnano.0c03997] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Plasmonically enhanced optical dichroism has attracted substantial interest for its application in optical sensing, where the interplay between chirality emanating from both molecules and plasmon-supporting structures has been regarded as a critical ingredient. Here, we experimentally demonstrate that suitably self-assembled achiral plasmonic nanostructures produce a high degree of enhancement in the optical dichroism observed from chiral molecules placed in their vicinity. Specifically, we identify a near-field enhancement associated with plasmonic hotpots as the mechanism enabling our observation of visible-NIR circular dichroism emanating from small amounts of chiral molecules. Our structures consist of linear arrays of gold nanorods obtained by introducing chiral anionic surfactants, such as modified bile salts, which lead to selective destabilization of a cetyltrimethylammonium bromide coating layer on Au nanorods, thereby promoting a tip-to-tip oriented assembly. The proposed mechanism of plasmonically-enhanced circular dichroism is supported by deriving a simple, yet general theoretical formalism that confirms the observed results, revealing the role of optical hotspots at the gaps of linear tip-to-tip nanorod assemblies as the origin of enhancement in the dichroism from chiral molecules. Importantly, it is the refractive rather than the absorption-mediated chiral response of the molecules that produces dichroism in the visible-NIR plasmonic regime, far from their UV absorption resonances. The observed self-assembly mechanism suggests that chiral analytes not directly interacting with the nanorod surfaces, but just able to induce tip-to-tip aggregation, can be revealed by a CD signature in the plasmonic region, thereby supporting potential applications in ultrasensitive analysis.
Collapse
Affiliation(s)
- Emilia Severoni
- Dipartimento di Chimica, "Sapienza" Università di Roma, P. le A. Moro 5, 00185 Roma, Italy
| | - Sonia Maniappan
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517 507, India
| | - Luis M Liz-Marzán
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Paseo de Miramón 182, 20014 Donostia-San Sebastián, Spain
- Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain
- Centro de Investigación en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Paseo de Miramón 182, 20014 Donostia-San Sebastián, Spain
| | - Jatish Kumar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517 507, India
| | - F Javier García de Abajo
- Institut de Ciencies Fotoniques (ICFO), The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Passeig Lluís Companys 23, 08010 Barcelona, Spain
| | - Luciano Galantini
- Dipartimento di Chimica, "Sapienza" Università di Roma, P. le A. Moro 5, 00185 Roma, Italy
| |
Collapse
|
4
|
Kneer LM, Roller EM, Besteiro LV, Schreiber R, Govorov AO, Liedl T. Circular Dichroism of Chiral Molecules in DNA-Assembled Plasmonic Hotspots. ACS Nano 2018; 12:9110-9115. [PMID: 30188691 DOI: 10.1021/acsnano.8b03146] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
The chiral state of a molecule plays a crucial role in molecular recognition and biochemical reactions. Because of this and owing to the fact that most modern drugs are chiral, the sensitive and reliable detection of the chirality of molecules is of great interest to drug development. The majority of naturally occurring biomolecules exhibit circular dichroism (CD) in the UV range. Theoretical studies and several experiments have demonstrated that this UV-CD can be transferred into the plasmonic frequency domain when metal surfaces and chiral biomolecules are in close proximity. Here, we demonstrate that the CD transfer effect can be drastically enhanced by placing chiral molecules, here double-stranded DNA, inside a plasmonic hotspot. By using different particle types (gold, silver, spheres, and rods) and by exploiting the versatility of DNA origami, we were able to systematically study the impact of varying particle distances on the CD transfer efficiency and to demonstrate CD transfer over the whole optical spectrum down to the near-infrared. For this purpose, nanorods were also placed upright on DNA origami sheets, forming strong optical antennas. Theoretical models, demonstrating the intricate relationships between molecular chirality and achiral electric fields, support our experimental findings. From both experimental measurements and theoretical considerations, we conclude that the transferred CD is most intensive for systems with strong plasmonic hotspots, as we find them in relatively small gaps (5-12 nm) between spherical nanoparticles and preferably between the tips of nanorods.
Collapse
Affiliation(s)
- Luisa M Kneer
- Fakultät für Physik and Center for Nanoscience , Ludwig-Maximilians-Universität München , Geschwister-Scholl-Platz 1 , 80539 Munich , Germany
| | - Eva-Maria Roller
- Fakultät für Physik and Center for Nanoscience , Ludwig-Maximilians-Universität München , Geschwister-Scholl-Platz 1 , 80539 Munich , Germany
| | - Lucas V Besteiro
- Department of Physics and Astronomy , Ohio University , Athens , Ohio 45701 , United States
| | - Robert Schreiber
- Fakultät für Physik and Center for Nanoscience , Ludwig-Maximilians-Universität München , Geschwister-Scholl-Platz 1 , 80539 Munich , Germany
| | - Alexander O Govorov
- Department of Physics and Astronomy , Ohio University , Athens , Ohio 45701 , United States
- Institute of Fundamental and Frontier Sciences , University of Electronic Science and Technology of China , Chengdu 610054 , China
| | - Tim Liedl
- Fakultät für Physik and Center for Nanoscience , Ludwig-Maximilians-Universität München , Geschwister-Scholl-Platz 1 , 80539 Munich , Germany
| |
Collapse
|
5
|
Abstract
The fabrication of chiroptical plasmonic nanomaterials such as chiral plasmonic gold nanorods (GNRs) has been attracting great interest. Generally, in order to realize the plasmonic circular dichroism (PCD) from achiral GNRs, it is necessary to partially replace the surface-coated cetyltrimethylammonium bromide with chiral molecules. Here, we present a supramolecular approach to generate and modulate the PCD of GNRs through the hybrid gelation of GNRs with an amphiphilic chiral dendron gelator. Upon gelation, the PCD could be produced and further regulated depending on the ratio of the dendrons to GNRs. It was revealed that the wrapping of the self-assembled nanofibers around the GNRs is crucial for generating the PCD. Furthermore, the hybrid gel underwent a thermotriggered gel-sol and sol-gel transformation, during which the PCD can disappear (solution) and reappear (gel), respectively, and such process can be repeated many times. In addition, the hybrid gel could also undergo shrinkage upon addition of a slight amount of Mg2+ ions, during which the PCD disappeared also. Thus, through the gel formation and subsequent metal ion- or temperature-triggered phase transition, PCD can be reversibly modulated. The results not only clarified the generation mechanism of PCD from the achiral GNRs without the chiral modification on the surface but also offered a simple and efficient way to modulate the PCD.
Collapse
Affiliation(s)
- Xue Jin
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, People's Republic of China
- University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China
| | - Jian Jiang
- National Center for Nanoscience and Technology, CAS Center for Excellence in Nanoscience , Beijing 100190, People's Republic of China
| | - Minghua Liu
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, People's Republic of China
- National Center for Nanoscience and Technology, CAS Center for Excellence in Nanoscience , Beijing 100190, People's Republic of China
- A Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300072, People's Republic of China
- University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China
| |
Collapse
|