1
|
Dey S, Ghosh SK, Satpati B. Assembly of Gold Nanostar Cores Within Silica Shells and Its Impact on Solid-State SERS and Nonenzymatic Catalytic Sensing. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024. [PMID: 39024338 DOI: 10.1021/acs.langmuir.4c01632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/20/2024]
Abstract
Metal core and dielectric shell nanoparticles (NPs) have garnered considerable attention for their multifaceted properties and extensive applications across diverse fields of nanoscience and nanotechnology. However, a literature gap exists regarding the impact of assembled metallic nanostar cores within a single shell, particularly concerning surface-enhanced Raman scattering (SERS) and electrochemical sensing. In this study, we have demonstrated the better performance of assemblies of gold nanostars (AuNSs) enclosed in single silica shell for SERS enhancement and electrocatalytic activity, particularly in the fields of ascorbic acid (AA) and glucose sensing. We have devised a method to isolate and passivate nanostar assemblies, ranging from 2 to 30 nanostars per assembly, with a functionalized silica (SiO2) shell, facilitating their preservation. The engineered thickness of the silica shell ensures unhindered optical measurements while elucidating the influence of multiple AuNS cores. Due to the formation of nanogaps and nanojunctions between AuNSs within assembly, we have achieved a maximum SERS enhancement factor (EF) of 1.416 × 1010 for the rhodamine 6G analyte. Utilizing assembled AuNS cores within a single silica shell, we have demonstrated AA (sensitivity of 5.278 × 10-5 μA μM-1 cm-2) and glucose (sensitivity of 7.519 × 10-4 μA μM-1 cm-2) sensing via a nonenzymatic electrochemical pathway.
Collapse
Affiliation(s)
- Suman Dey
- Surface Physics and Material Science Division, Saha Institute of Nuclear Physics, A CI of Homi Bhaba National Institute, 1/AF Bidhannagar, Kolkata 700064, India
| | - Suman Kumar Ghosh
- Surface Physics and Material Science Division, Saha Institute of Nuclear Physics, A CI of Homi Bhaba National Institute, 1/AF Bidhannagar, Kolkata 700064, India
| | - Biswarup Satpati
- Surface Physics and Material Science Division, Saha Institute of Nuclear Physics, A CI of Homi Bhaba National Institute, 1/AF Bidhannagar, Kolkata 700064, India
| |
Collapse
|
2
|
Pan X, Zhang Z, Yun Y, Zhang X, Sun Y, Zhang Z, Wang H, Yang X, Tan Z, Yang Y, Xie H, Bogdanov B, Zmaga G, Senyushkin P, Wei X, Song Y, Su M. Machine Learning-Assisted High-Throughput Identification and Quantification of Protein Biomarkers with Printed Heterochains. J Am Chem Soc 2024; 146:19239-19248. [PMID: 38949598 DOI: 10.1021/jacs.4c04460] [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: 07/02/2024]
Abstract
Advanced in vitro diagnosis technologies are highly desirable in early detection, prognosis, and progression monitoring of diseases. Here, we engineer a multiplex protein biosensing strategy based on the tunable liquid confinement self-assembly of multi-material heterochains, which show improved sensitivity, throughput, and accuracy compared to standard ELISA kits. By controlling the material combination and the number of ligand nanoparticles (NPs), we observe robust near-field enhancement as well as both strong electromagnetic resonance in polymer-semiconductor heterochains. In particular, their optical signals show a linear response to the coordination number of the semiconductor NPs in a wide range. Accordingly, a visible nanophotonic biosensor is developed by functionalizing antibodies on central polymer chains that can identify target proteins attached to semiconductor NPs. This allows for the specific detection of multiple protein biomarkers from healthy people and pancreatic cancer patients in one step with an ultralow detection limit (1 pg/mL). Furthermore, rapid and high-throughput quantification of protein expression levels in diverse clinical samples such as buffer, urine, and serum is achieved by combining a neural network algorithm, with an average accuracy of 97.3%. This work demonstrates that the heterochain-based biosensor is an exemplary candidate for constructing next-generation diagnostic tools and suitable for many clinical settings.
Collapse
Affiliation(s)
- Xiangyu Pan
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
- University of Chinese Academy of Sciences (UCAS), Beijing 100049, PR China
| | - Zeying Zhang
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
- University of Chinese Academy of Sciences (UCAS), Beijing 100049, PR China
| | - Yang Yun
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
- University of Chinese Academy of Sciences (UCAS), Beijing 100049, PR China
| | - Xu Zhang
- Department of Clinical Laboratory, the first Medical Centre, Chinese PLA General Hospital, Beijing 100853, China
| | - Yali Sun
- School of Physics and Engineering, ITMO University, Saint Petersburg 197101, Russia
| | - Zixuan Zhang
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
- University of Chinese Academy of Sciences (UCAS), Beijing 100049, PR China
| | - Huadong Wang
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
- University of Chinese Academy of Sciences (UCAS), Beijing 100049, PR China
| | - Xu Yang
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
- University of Chinese Academy of Sciences (UCAS), Beijing 100049, PR China
| | - Zhiyu Tan
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
- University of Chinese Academy of Sciences (UCAS), Beijing 100049, PR China
| | - Yaqi Yang
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
- University of Chinese Academy of Sciences (UCAS), Beijing 100049, PR China
| | - Hongfei Xie
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
- University of Chinese Academy of Sciences (UCAS), Beijing 100049, PR China
| | - Bogdan Bogdanov
- School of Physics and Engineering, ITMO University, Saint Petersburg 197101, Russia
| | - Georgii Zmaga
- School of Physics and Engineering, ITMO University, Saint Petersburg 197101, Russia
| | - Pavel Senyushkin
- School of Physics and Engineering, ITMO University, Saint Petersburg 197101, Russia
| | - Xuemei Wei
- Department of Clinical Laboratory, the first Medical Centre, Chinese PLA General Hospital, Beijing 100853, China
| | - Yanlin Song
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
- University of Chinese Academy of Sciences (UCAS), Beijing 100049, PR China
| | - Meng Su
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
- University of Chinese Academy of Sciences (UCAS), Beijing 100049, PR China
| |
Collapse
|
3
|
Yao Y, Gao L, Cai C, Lin J, Lin S. Supramolecular Polymerization of Polymeric Nanorods Mediated by Block Copolymers. Angew Chem Int Ed Engl 2023; 62:e202216872. [PMID: 36604302 DOI: 10.1002/anie.202216872] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/19/2022] [Accepted: 01/04/2023] [Indexed: 01/07/2023]
Abstract
Introducing a second component is an effective way to manipulate polymerization behavior. However, this phenomenon has rarely been observed in colloidal systems, such as polymeric nanoparticles. Here, we report the supramolecular polymerization of polymeric nanorods mediated by block copolymers. Experimental observations and simulation results illustrate that block copolymers surround the polymeric nanorods and mainly concentrate around the two ends, leaving the hydrophobic side regions exposed. These polymeric nanorods connect in a side-by-side manner through hydrophobic interactions to form bundles. As polymerization progresses, the block copolymers gradually deposit onto the bundles and finally assemble into helical nanopatterns on the outermost surface, which terminates the polymerization. It is anticipated that this work could offer inspiration for a general strategy of controllable supramolecular polymerization.
Collapse
Affiliation(s)
- Yike Yao
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Liang Gao
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Chunhua Cai
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Jiaping Lin
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Shaoliang Lin
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| |
Collapse
|
4
|
Linko V, Zhang H, Nonappa, Kostiainen MA, Ikkala O. From Precision Colloidal Hybrid Materials to Advanced Functional Assemblies. Acc Chem Res 2022; 55:1785-1795. [PMID: 35647700 PMCID: PMC9260957 DOI: 10.1021/acs.accounts.2c00093] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
ConspectusThe concept of colloids encompasses a wide range of isotropic and anisotropic particles with diverse sizes, shapes, and functions from synthetic nanoparticles, nanorods, and nanosheets to functional biological units. They are addressed in materials science for various functions, while they are ubiquitous in the biological world for multiple functions. A large variety of synthetic colloids have been researched due to their scientific and technological importance; still they characteristically suffer from finite size distributions, imperfect shapes and interactions, and not fully engineered functions. This contrasts with biological colloids that offer precision in their size, shape, and functionality. Materials science has searched for inspiration from the biological world to allow structural control by self-assembly and hierarchy and to identify novel routes for combinations of functions in bio-inspiration.Herein, we first discuss different approaches for highly defined structural control of technically relevant synthetic colloids based on guided assemblies of biological motifs. First, we describe how polydisperse nanoparticles can be assembled within hollow protein cages to allow well-defined assemblies and hierarchical packings. Another approach relies on DNA nanotechnology-based assemblies, where engineered DNA structures allow programmed assembly. Then we will discuss synthetic colloids that have either particularly narrow size dispersity or even atomically precise structures for new assemblies and potential functions. Such colloids can have well-defined packings for membranes allowing high modulus. They can be switchable using light-responsive moieties, and they can initiate packing of larger assemblies of different geometrical shapes. The emphasis is on atomically defined nanoclusters that allow well-defined assemblies by supramolecular interactions, such as directional hydrogen bonding. Finally, we will discuss stimulus-responsive colloids for new functions, even toward complex responsive functions inspired by life. Therein, stimulus-responsive materials inspired by biological learning could allow the next generation of such materials. Classical conditioning is among the simplest biological learning concepts, requiring two stimuli and triggerable memory. Therein we use thermoresponsive hydrogels with plasmonic gold nanoparticles and a spiropyran photoacid as a model. Heating is the unconditioned stimulus leading to melting of the thermoresponsive gel, whereas light (at a specified wavelength) originally leads to reduced pH without plasmonic or structural changes because of steric gel stabilization. Under heat-induced gel melting, light results in pH-decrease and chain-like aggregation of the gold nanoparticles, allowing a new plasmonic response. Thus, simultaneous heating and light irradiation allow conditioning for a newly derived stimulus, where the logic diagram is analogous to Pavlovian conditioning. The shown assemblies demonstrate the different functionalities achievable using colloids when the sizes and the dispersity are controlled.
Collapse
Affiliation(s)
- Veikko Linko
- Department of Bioproducts and Biosystems, Aalto University School of Chemical Engineering, FI-00076 Espoo, Finland
| | - Hang Zhang
- Department of Applied Physics, Aalto University School of Science, FI-00076 Espoo, Finland
| | - Nonappa
- Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, FI-33101 Tampere, Finland
| | - Mauri A. Kostiainen
- Department of Bioproducts and Biosystems, Aalto University School of Chemical Engineering, FI-00076 Espoo, Finland
| | - Olli Ikkala
- Department of Bioproducts and Biosystems, Aalto University School of Chemical Engineering, FI-00076 Espoo, Finland
- Department of Applied Physics, Aalto University School of Science, FI-00076 Espoo, Finland
| |
Collapse
|
5
|
Li X, Liu X, Liu X. Self-assembly of colloidal inorganic nanocrystals: nanoscale forces, emergent properties and applications. Chem Soc Rev 2021; 50:2074-2101. [PMID: 33325927 DOI: 10.1039/d0cs00436g] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The self-assembly of colloidal nanoparticles has made it possible to bridge the nanoscopic and macroscopic worlds and to make complex nanostructures. The nanoparticle-mediated assembly enables many potential applications, from biodetection and nanomedicine to optoelectronic devices. Properties of assembled materials are determined not only by the nature of nanoparticle building blocks, but also by spatial positions of nanoparticles within the assemblies. A deep understanding of nanoscale interactions between nanoparticles is a prerequisite to controlling nanoparticle arrangement during assembly. In this review, we present an overview of interparticle interactions governing their assembly in a liquid phase. Considerable attention is devoted to examples that illustrate nanoparticle assembly into ordered superstructures using different types of building blocks, including plasmonic nanoparticles, magnetic nanoparticles, lanthanide-doped nanophosphors, and quantum dots. We also cover the physicochemical properties of nanoparticle ensembles, especially those arising from particle coupling effects. We further discuss future research directions and challenges in controlling self-assembly at a level of precision that is most crucial to technology development.
Collapse
Affiliation(s)
- Xiyan Li
- Institute of Photoelectronic Thin Film Devices and Technology, Nankai University, Tianjin 300071, China.
| | - Xiaowang Liu
- Frontiers Science Center for Flexible Electronics (FSCFE), MIIT Key Laboratory of Flexible Electronics (KLoFE), Shaanxi Institute of Flexible Electronics (SIFE), 8. Institute of Flexible Electronics (IFE), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an 710072, China.
| | - Xiaogang Liu
- Department of Chemistry, Faculty of Science, National University of Singapore, 3 Science Drive 3, 117543, Singapore. and Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University, Fuzhou 350207, China and The N.1 Institute for Health, National University of Singapore, 117456, Singapore
| |
Collapse
|
6
|
Su J, Huang X, Yang M. Self‐Limiting Assembly of Au Nanoparticles Induced by Localized Dynamic Metal‐Phenolic Interactions. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000842] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jiaojiao Su
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology 150001 Harbin P. R. China
| | - Xin Huang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology 150001 Harbin P. R. China
| | - Ming Yang
- Key Laboratory of Microsystems and Micronanostructrues Manufacturing Harbin Institute of Technology 2 Yikuang Street 150080 Harbin P. R. China
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin University 130012 Changchun P. R. China
| |
Collapse
|
7
|
Dey P, Thurecht KJ, Fredericks PM, Blakey I. Stepwise Like Supramolecular Polymerization of Plasmonic Nanoparticle Building Blocks through Complementary Interactions. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01149] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Priyanka Dey
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, Queensland 4001, Australia
| | - Kristofer J. Thurecht
- Australian Institute of Bioengineering and Nanotechnology, The University of Queensland, St. Lucia, Queensland 4072, Australia
- Centre for Advanced Imaging, The University of Queensland, St. Lucia, Queensland 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science, The University of Queensland, St. Lucia, Queensland 4072, Australia
- ARC Training Centre for Innovation in Biomedical Imaging Technology, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Peter M. Fredericks
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, Queensland 4001, Australia
| | - Idriss Blakey
- Australian Institute of Bioengineering and Nanotechnology, The University of Queensland, St. Lucia, Queensland 4072, Australia
- Centre for Advanced Imaging, The University of Queensland, St. Lucia, Queensland 4072, Australia
- ARC Training Centre for Innovation in Biomedical Imaging Technology, The University of Queensland, St. Lucia, Queensland 4072, Australia
| |
Collapse
|
8
|
Gao L, Xiang W, Deng Z, Shi K, Wang H, Shi H. Cocaine detection using aptamer and molybdenum disulfide-gold nanoparticle-based sensors. Nanomedicine (Lond) 2020; 15:325-335. [PMID: 31976806 DOI: 10.2217/nnm-2019-0046] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Aim: The current work highlighted a novel colorimetric sensor based on aptamer and molybdenum disulfide (MoS2)-gold nanoparticles (AuNPs) that was developed for cocaine detection with high sensitivity. Materials & methods: Due to the presence of the plasmon resonance band on the surface of AuNPs, AuNPs aggregated and the color was changed from red to blue after adding a certain concentration of NaCl. We used MoS2 to optimize the sensing system of AuNPs. The folded conformation of the aptamer in combination with cocaine enhanced the salt tolerance of the MoS2-AuNPs, effectively preventing their aggregation. Results & conclusion: The detection limit of cocaine was 7.49 nM with good selectivity. The method based on MoS2-AuNPs colorimetry sensor is simple, quick, label-free and low cost.
Collapse
Affiliation(s)
- Li Gao
- Precision Medical Center Laboratory, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325015, PR China
| | - Wenwen Xiang
- Precision Medical Center Laboratory, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325015, PR China
| | - Zebin Deng
- Precision Medical Center Laboratory, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325015, PR China
| | - Keqing Shi
- Precision Medical Center Laboratory, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325015, PR China
| | - Huixing Wang
- Precision Medical Center Laboratory, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325015, PR China
| | - Haixia Shi
- Precision Medical Center Laboratory, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325015, PR China
| |
Collapse
|
9
|
Yi C, Yang Y, Liu B, He J, Nie Z. Polymer-guided assembly of inorganic nanoparticles. Chem Soc Rev 2019; 49:465-508. [PMID: 31845685 DOI: 10.1039/c9cs00725c] [Citation(s) in RCA: 123] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The self-assembly of inorganic nanoparticles is of great importance in realizing their enormous potentials for broad applications due to the advanced collective properties of nanoparticle ensembles. Various molecular ligands (e.g., small molecules, DNAs, proteins, and polymers) have been used to assist the organization of inorganic nanoparticles into functional structures at different hierarchical levels. Among others, polymers are particularly attractive for use in nanoparticle assembly, because of the complex architectures and rich functionalities of assembled structures enabled by polymers. Polymer-guided assembly of nanoparticles has emerged as a powerful route to fabricate functional materials with desired mechanical, optical, electronic or magnetic properties for a broad range of applications such as sensing, nanomedicine, catalysis, energy storage/conversion, data storage, electronics and photonics. In this review article, we summarize recent advances in the polymer-guided self-assembly of inorganic nanoparticles in both bulk thin films and solution, with an emphasis on the role of polymers in the assembly process and functions of resulting nanostructures. Precise control over the location/arrangement, interparticle interaction, and packing of inorganic nanoparticles at various scales are highlighted.
Collapse
Affiliation(s)
- Chenglin Yi
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, P. R. China.
| | - Yiqun Yang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, P. R. China.
| | - Ben Liu
- Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, Jiangsu 210023, China and Department of Chemistry and Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, CT 06268, USA.
| | - Jie He
- Department of Chemistry and Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, CT 06268, USA.
| | - Zhihong Nie
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, P. R. China.
| |
Collapse
|
10
|
Choi CKK, Chiu YTE, Zhuo X, Liu Y, Pak CY, Liu X, Tse YLS, Wang J, Choi CHJ. Dopamine-Mediated Assembly of Citrate-Capped Plasmonic Nanoparticles into Stable Core-Shell Nanoworms for Intracellular Applications. ACS NANO 2019; 13:5864-5884. [PMID: 31038921 DOI: 10.1021/acsnano.9b01591] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Plasmonic nanochains, derived from the one-dimensional assembly of individual plasmonic nanoparticles (NPs), remain infrequently explored in biological investigations due to their limited colloidal stability, ineffective cellular uptake, and susceptibility to intracellular disassembly. We report the synthesis of polydopamine (PDA)-coated plasmonic "nanoworms" (NWs) by sonicating citrate-capped gold (Cit-Au) NPs in a concentrated dopamine (DA) solution under alkaline conditions. DA mediates the assembly of Cit-Au NPs into Au NWs within 1 min, and subsequent self-polymerization of DA for 60 min enables the growth of an outer conformal PDA shell that imparts stability to the inner Au NW structure in solution, yielding "core-shell" Au@PDA NWs with predominantly 4-5 Au cores per worm. Our method supports the preparation of monometallic Au@PDA NWs with different core sizes and bimetallic PDA-coated NWs with Au and silver cores. The protonated primary amine and catechol groups of DA, with their ability to interact with Cit anions via hydrogen bonding and electrostatic attraction, are critical to assembly. When compared to unassembled PDA-coated Au NPs, our Au@PDA NWs scatter visible light and absorb near-infrared light more intensely and enter HeLa cancer cells more abundantly. Au@PDA NWs cross the cell membrane as intact entities primarily via macropinocytosis, mostly retain their inner NW structure and outer PDA shell inside the cell for 24 h, and do not induce noticeable cytotoxicity. We showcase three intracellular applications of Au@PDA NWs, including label-free dark-field scattering cell imaging, delivery of water-insoluble cargos without pronounced localization in acidic compartments, and photothermal killing of cancer cells.
Collapse
|
11
|
Duan W, Zhang P, Xiahou Y, Song Y, Bi C, Zhan J, Du W, Huang L, Möhwald H, Xia H. Regulating Surface Facets of Metallic Aerogel Electrocatalysts by Size-Dependent Localized Ostwald Ripening. ACS APPLIED MATERIALS & INTERFACES 2018; 10:23081-23093. [PMID: 29926731 DOI: 10.1021/acsami.8b04823] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
It is well known that the activity and stability of electrocatalysts are largely dependent on their surface facets. In this work, we have successfully regulated surface facets of three-dimensional (3D) metallic Au m- n aerogels by salt-induced assembly of citrate-stabilized gold nanoparticles (Au NPs) of two different sizes and further size-dependent localized Ostwald ripening at controlled particle number ratios, where m and n represent the size of Au NPs. In addition, 3D Au m- n-Pd aerogels were further synthesized on the basis of Au m- n aerogels and also bear controlled surface facets because of the formation of ultrathin Pd layers on Au m- n aerogels. Taking the electrooxidation of small organic molecules (such as methanol and ethanol) by the resulting Au m- n and Au m- n-Pd aerogels as examples, it is found that surface facets of metallic aerogels with excellent performance can be regulated to realize preferential surface facets for methanol oxidation and ethanol oxidation, respectively. Moreover, they also indeed simultaneously bear high activity and excellent stability. Furthermore, their activities and stability are also highly dependent on the area ratio of active facets and inactive facets on their surfaces, respectively, and these ratios are varied via the mismatch of sizes of adjacent NPs. Thus, this work not only demonstrates the realization of the regulation of the surface facets of metallic aerogels by size-dependent localized Ostwald ripening but also will open up a new way to improve electrocatalytic performance of 3D metallic aerogels by surface regulation.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Wei Du
- School of Environment and Material Engineering , Yantai University , Yantai 264005 Shandong , China
| | | | - Helmuth Möhwald
- Max Planck Institute of Colloids and Interfaces , Potsdam-Golm Science Park , 14476 Potsdam , Germany
| | | |
Collapse
|
12
|
Zhang X, Lv L, Wu G, Yang D, Dong A. Cluster-mediated assembly enables step-growth copolymerization from binary nanoparticle mixtures with rationally designed architectures. Chem Sci 2018; 9:3986-3991. [PMID: 29862003 PMCID: PMC5944820 DOI: 10.1039/c8sc00220g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 04/01/2018] [Indexed: 01/04/2023] Open
Abstract
Multicomponent nanoparticle chains structurally analogous to random, block, and alternating copolymers, respectively, have been fabricated by a cluster-mediated self-assembly process.
Directed co-assembly of binary nanoparticles (NPs) into one-dimensional copolymer-like chains is fascinating but challenging in the realm of material science. While many strategies have been developed to induce the polymerization of NPs, it remains a grand challenge to produce colloidal copolymers with widely tailored compositions and precisely controlled architectures. Herein we report a robust colloidal polymerization strategy, which enables the growth of sophisticated NP chains with elaborately designed structures. By quantifying NP assembly statistics and kinetics, we establish that the linear assembly of colloidal NPs, with the assistance of PbSO4 clusters, follows a step-growth polymerization mechanism, and on the basis of this, we design and fabricate NP chains structurally analogous to random, block, and alternating copolymers, respectively. Our studies offer mechanistic insights into cluster-mediated colloidal polymerization, paving the way toward the rational synthesis of colloidal copolymers with quantitatively predicted architectures and functionalities.
Collapse
Affiliation(s)
- Xianfeng Zhang
- State Key Laboratory of Molecular Engineering of Polymers , Department of Macromolecular Science , Fudan University , Shanghai 200433 , China
| | - Longfei Lv
- iChem , Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials , Department of Chemistry , Fudan University , Shanghai 200433 , China .
| | - Guanhong Wu
- iChem , Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials , Department of Chemistry , Fudan University , Shanghai 200433 , China .
| | - Dong Yang
- State Key Laboratory of Molecular Engineering of Polymers , Department of Macromolecular Science , Fudan University , Shanghai 200433 , China
| | - Angang Dong
- iChem , Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials , Department of Chemistry , Fudan University , Shanghai 200433 , China .
| |
Collapse
|
13
|
Wang Y, Fang L, Chen G, Song L, Deng Z. Freeze the Moment: High Speed Capturing of Weakly Bonded Dynamic Nanoparticle Assemblies in Solution by Ag Ion Soldering. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:1703303. [PMID: 29316229 DOI: 10.1002/smll.201703303] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2017] [Revised: 11/15/2017] [Indexed: 06/07/2023]
Abstract
Despite the versatile forms of colloidal aggregates, these spontaneously formed structures are often hard to find a suitable application in nanotechnology and materials science. A determinate reason is the lack of a suitable method to capture the transiently formed and quickly evolving colloidal structures in solution. To address this challenge, a simple but highly efficient strategy is herein reported to capture the dynamic and metastable colloidal assemblies formed in an aqueous or nonaqueous solution. This process takes advantage of a recently developed Ag ion soldering reaction to realize a rapid fixation of as-formed metastable assemblies. This method works efficiently for both solid (3D) nanoparticle aggregates and weakly bonded fractal nanoparticle chains (1D). In both cases, very high capturing speed and close to 100% efficiency are achieved to fully retain a quickly growing structure. The soldered nanochains further enable a fabrication of discrete, uniform, and functionalizable nanoparticle clusters with enriched linear conformation by mechanical shearing, which would otherwise be difficult to make. The captured products are water dispersible and mechanically robust, favoring an exploration of their properties toward possible applications. The work paves a way to previously untouched aspects of colloidal science and thus would create new chances in nanotechnology.
Collapse
Affiliation(s)
- Yueliang Wang
- CAS Key Laboratory of Soft Matter Chemistry and Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Lingling Fang
- CAS Key Laboratory of Soft Matter Chemistry and Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Gaoli Chen
- CAS Key Laboratory of Soft Matter Chemistry and Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Lei Song
- CAS Key Laboratory of Soft Matter Chemistry and Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Zhaoxiang Deng
- CAS Key Laboratory of Soft Matter Chemistry and Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
| |
Collapse
|
14
|
Shen J, Wang Z, Sun D, Xia C, Yuan S, Sun P, Xin X. pH-Responsive Nanovesicles with Enhanced Emission Co-Assembled by Ag(I) Nanoclusters and Polyethyleneimine as a Superior Sensor for Al 3. ACS APPLIED MATERIALS & INTERFACES 2018; 10:3955-3963. [PMID: 29319291 DOI: 10.1021/acsami.7b16316] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Metal nanoclusters (NCs) have been engineered as a new kind of luminescent material, whereas the application of metal NCs in aqueous solution was subjected to great limitations owing to their poor solubility, stability, and strong luminescence quenching in a single-molecule state. Herein, facile supramolecular self-assembly strategy was carried out to enhance the luminescence of Ag(I) NCs (Ag6-NCs) through multiple electrostatic interactions with polyethyleneimine (PEI). Functional colloid aggregates of Ag6-NCs such as nanospheres and nanovesicles were formed along with the enhanced emission because of the formation of compact-ordered self-assemblies, which effectively restricted intramolecular vibration of the capping ligands on Ag6-NCs to diminish the nonradiative decay. All those could block energy loss and facilitated the radiative relaxation of excited states which ultimately induced an aggregation-induced emission (AIE) phenomenon. Furthermore, the luminescent Ag6-NCs/PEI nanovesicles are pH-responsive and show a superior fluorescent sensing behavior for the detection of Al3+ with a limit of detection low to 3 μM. This is the first report about AIE of silver NCs with polymers in aqueous solution. This work sheds light on the controlled NCs-based supramolecular self-assembly and the NCs-based functional materials, which will be well-established candidates in controllable drug delivery, biomarkers, and sensors in aqueous solution.
Collapse
Affiliation(s)
- Jinglin Shen
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University , Jinan 250100, P. R. China
| | - Zhi Wang
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University , Jinan 250100, P. R. China
| | - Di Sun
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University , Jinan 250100, P. R. China
| | - Congxin Xia
- National Engineering Technology Research Center for Colloidal Materials, Shandong University , Shanda Nanlu No. 27, Jinan 250100, P. R. China
| | - Shiling Yuan
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University , Jinan 250100, P. R. China
| | - Panpan Sun
- National Engineering Technology Research Center for Colloidal Materials, Shandong University , Shanda Nanlu No. 27, Jinan 250100, P. R. China
| | - Xia Xin
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University , Jinan 250100, P. R. China
- National Engineering Technology Research Center for Colloidal Materials, Shandong University , Shanda Nanlu No. 27, Jinan 250100, P. R. China
| |
Collapse
|
15
|
Wang J, Zhang P, Xiahou Y, Wang D, Xia H, Möhwald H. Simple Synthesis of Au-Pd Alloy Nanowire Networks as Macroscopic, Flexible Electrocatalysts with Excellent Performance. ACS APPLIED MATERIALS & INTERFACES 2018; 10:602-613. [PMID: 29218987 DOI: 10.1021/acsami.7b14955] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The present work introduces a new way to prepare Au-Pd alloy nanowire networks (NWNs) via deposition of Pd atoms onto Au nanowires in reaction media at room temperature without the aid of additional reducing agents. Thanks to their excellent colloidal stability in water as well as in ethanol, the resulting NWNs can be utilized to produce composite thin films with Nafion (perfluorinated sulfonic acid) with dimensions above dozens of square centimeters by means of solution casting on the glass substrate. Most importantly, these films can be easily transferred onto different solid substrates by lift-off technology. Moreover, the resulting Au-Pd alloy NWNs can also be easily and thoroughly loaded into macroscopic carbon fiber cloth (CFC). Both the Au-Pd alloy NWN/Nafion composite film and the Au-Pd alloy NWN-loaded CFC can be used as flexible electrodes for electrocatalysis of ethanol oxidation, with electrocatalytic performance at different distorted states superior by 2 orders of magnitude to those reported in the literature (e.g., commercial Pd/C catalysts and Pd-based nanostructured catalysts). This work opens new possibilities for the large-scale manufacturing of electrodes for fuel cells.
Collapse
Affiliation(s)
- Jin Wang
- State Key Laboratory of Crystal Materials, Shandong University , Jinan 250100, P. R. China
| | - Peina Zhang
- State Key Laboratory of Crystal Materials, Shandong University , Jinan 250100, P. R. China
| | - Yujiao Xiahou
- State Key Laboratory of Crystal Materials, Shandong University , Jinan 250100, P. R. China
| | - Dayang Wang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University , Changchun 130012, P. R. China
| | - Haibing Xia
- State Key Laboratory of Crystal Materials, Shandong University , Jinan 250100, P. R. China
| | - Helmuth Möhwald
- Max Planck Institute of Colloids and Interfaces, Potsdam-Golm Science Park , 14476 Potsdam, Germany
| |
Collapse
|
16
|
Cheng X, Zhao G, Lu Y, Yan M, Wang H, Chen H. Controllable oligomerization: defying step-growth kinetics in the polymerization of gold nanoparticles. Chem Commun (Camb) 2018; 54:7746-7749. [DOI: 10.1039/c8cc03424a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We report a new method for one-step dimerization of AuNP@PSPAA, which defies the step-growth kinetics and gives a record yield.
Collapse
Affiliation(s)
- Xuejun Cheng
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Jiangsu Nation Synergetic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211816
| | - Gui Zhao
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Jiangsu Nation Synergetic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211816
| | - Yan Lu
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Jiangsu Nation Synergetic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211816
| | - Miao Yan
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Jiangsu Nation Synergetic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211816
| | - Hong Wang
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Jiangsu Nation Synergetic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211816
| | - Hongyu Chen
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Jiangsu Nation Synergetic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211816
| |
Collapse
|
17
|
Eibling MJ, MacDermaid CM, Qian Z, Lanci CJ, Park SJ, Saven JG. Controlling Association and Separation of Gold Nanoparticles with Computationally Designed Zinc-Coordinating Proteins. J Am Chem Soc 2017; 139:17811-17823. [DOI: 10.1021/jacs.7b04786] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Matthew J. Eibling
- Department
of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Christopher M. MacDermaid
- Department
of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Zhaoxia Qian
- Department
of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Christopher J. Lanci
- Department
of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - So-Jung Park
- Department
of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Department
of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, South Korea
| | - Jeffery G. Saven
- Department
of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| |
Collapse
|
18
|
Gulka CP, Wong AC, Wright DW. Spontaneous self-assembly and disassembly of colloidal gold nanoparticles induced by tetrakis(hydroxymethyl) phosphonium chloride. Chem Commun (Camb) 2016; 52:1266-9. [PMID: 26611623 DOI: 10.1039/c5cc08211k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Upon reacting with tetrakis(hydroxymethyl) phosphonium chloride, 15 nm citrate gold nanoparticles rapidly assemble into linear chains, followed by slowly disassembling into monodisperse components. This work highlights the first example of (31)P NMR on gold particles of this size and suggests that the phosphonium is oxidized on-particle, contributing to particle disassembly.
Collapse
Affiliation(s)
- Christopher P Gulka
- Department of Chemistry, Vanderbilt University, Station B 351822, Nashville, TN 37235-1822, USA.
| | - Alexis C Wong
- Department of Chemistry, Vanderbilt University, Station B 351822, Nashville, TN 37235-1822, USA.
| | - David W Wright
- Department of Chemistry, Vanderbilt University, Station B 351822, Nashville, TN 37235-1822, USA.
| |
Collapse
|
19
|
Xia H, Xiahou Y, Zhang P, Ding W, Wang D. Revitalizing the Frens Method To Synthesize Uniform, Quasi-Spherical Gold Nanoparticles with Deliberately Regulated Sizes from 2 to 330 nm. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:5870-80. [PMID: 27263542 DOI: 10.1021/acs.langmuir.6b01312] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
In this work, we have successfully developed a new and consistent model to describe the growth of gold nanoparticles (Au NPs) via citrate reduction of auric acid (HAuCl4) by carefully assessing the temporal evolution of the NP sizes and surface charges by means of dynamic light scattering (DLS) and zeta-potential measurements. The new model demonstrates that the nucleation and growth of the Au NPs occur exclusively in the particles of the complexes of Au(+) ions and sodium acetone dicarboxylate (SAD) derived from the citrate/HAuCl4 redox reaction, which proceeds as described by the classic LaMer model. Concomitant with the Au NP growing therein, the Au(+)/SAD complex particles undergo reversible agglomeration with the reaction time, which may result in an abnormal color change of the reaction media but have little impact on the Au NP growth. Built on the new model, we have successfully produced monodisperse quasi-spherical Au NPs with sizes precisely regulated from 2 to 330 nm via simple citrate reduction in a one-pot manner. To date, highly uniform Au NPs with sizes spanning such a large size range could not be formed otherwise even via deliberately controlled seeded growth methods.
Collapse
Affiliation(s)
- Haibing Xia
- State Key Laboratory of Crystal Materials, Shandong University , Jinan 250100, P. R. China
| | - Yujiao Xiahou
- State Key Laboratory of Crystal Materials, Shandong University , Jinan 250100, P. R. China
| | - Peina Zhang
- State Key Laboratory of Crystal Materials, Shandong University , Jinan 250100, P. R. China
| | - Wenchao Ding
- State Key Laboratory of Crystal Materials, Shandong University , Jinan 250100, P. R. China
| | - Dayang Wang
- Department of Civil, Environmental and Chemical Engineering, School of Engineering, RMIT University , Melbourne, Victoria 3001, Australia
| |
Collapse
|
20
|
Pham TA, Schreiber A, Sturm (née Rosseeva) EV, Schiller S, Cölfen H. Hemolysin coregulated protein 1 as a molecular gluing unit for the assembly of nanoparticle hybrid structures. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2016; 7:351-363. [PMID: 27335729 PMCID: PMC4901536 DOI: 10.3762/bjnano.7.32] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Accepted: 02/25/2016] [Indexed: 06/06/2023]
Abstract
Hybrid nanoparticle (NP) structures containing organic building units such as polymers, peptides, DNA and proteins have great potential in biosensor and electronic applications. The nearly free modification of the polymer chain, the variation of the protein and DNA sequence and the implementation of functional moieties provide a great platform to create inorganic structures of different morphology, resulting in different optical and magnetic properties. Nevertheless, the design and modification of a protein structure with functional groups or sequences for the assembly of biohybrid materials is not trivial. This is mainly due to the sensitivity of its secondary, tertiary and quaternary structure to the changes in the interaction (e.g., hydrophobic, hydrophilic, electrostatic, chemical groups) between the protein subunits and the inorganic material. Here, we use hemolysin coregulated protein 1 (Hcp1) from Pseudomonas aeruginosa as a building and gluing unit for the formation of biohybrid structures by implementing cysteine anchoring points at defined positions on the protein rim (Hcp1_cys3). We successfully apply the Hcp1_cys3 gluing unit for the assembly of often linear, hybrid structures of plasmonic gold (Au NP), magnetite (Fe3O4 NP), and cobalt ferrite nanoparticles (CoFe2O4 NP). Furthermore, the assembly of Au NPs into linear structures using Hcp1_cys3 is investigated by UV-vis spectroscopy, TEM and cryo-TEM. One key parameter for the formation of Au NP assembly is the specific ionic strength in the mixture. The resulting network-like structure of Au NPs is characterized by Raman spectroscopy, showing surface-enhanced Raman scattering (SERS) by a factor of 8·10(4) and a stable secondary structure of the Hcp1_cys3 unit. In order to prove the catalytic performance of the gold hybrid structures, they are used as a catalyst in the reduction reaction of 4-nitrophenol showing similar catalytic activity as the pure Au NPs. To further extend the functionality of the Hcp1_cys3 gluing unit, Fe3O4 and CoFe2O4 NPs are aligned in a magnetic field and connected by utilization of cysteine-modified Hcp1. After lyophilization, a fiber-like material of micrometer scale length can be observed. The Fe3O4 Hcp1_cys3 fibers show superparamagnetic behavior with a decreasing blocking temperature and an increasing remanent magnetization leading to a higher squareness value of the hysteresis curve. Thus the Hcp1_cys3 unit is shown to be very versatile in the formation of new biohybrid materials with enhanced magnetic, catalytic and optical properties.
Collapse
Affiliation(s)
- Tuan Anh Pham
- Department of Chemistry, Physical Chemistry, University of Konstanz, Universitätstrasse 10, D-78457 Konstanz, Germany
| | - Andreas Schreiber
- Zentrum für Biosystemanalyse (ZBSA), Albert-Ludwigs-Universität Freiburg, Habsburgerstrasse 49, D-79104 Freiburg, Germany
| | - Elena V Sturm (née Rosseeva)
- Department of Chemistry, Physical Chemistry, University of Konstanz, Universitätstrasse 10, D-78457 Konstanz, Germany
| | - Stefan Schiller
- Zentrum für Biosystemanalyse (ZBSA), Albert-Ludwigs-Universität Freiburg, Habsburgerstrasse 49, D-79104 Freiburg, Germany
| | - Helmut Cölfen
- Department of Chemistry, Physical Chemistry, University of Konstanz, Universitätstrasse 10, D-78457 Konstanz, Germany
| |
Collapse
|
21
|
Liu Y, He J, Yang K, Yi C, Liu Y, Nie L, Khashab NM, Chen X, Nie Z. Folding Up of Gold Nanoparticle Strings into Plasmonic Vesicles for Enhanced Photoacoustic Imaging. Angew Chem Int Ed Engl 2015; 54:15809-12. [PMID: 26555318 PMCID: PMC4715700 DOI: 10.1002/anie.201508616] [Citation(s) in RCA: 144] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Indexed: 12/25/2022]
Abstract
The stepwise self-assembly of hollow plasmonic vesicles with vesicular membranes containing strings of gold nanoparticles (NPs) is reported. The formation of chain vesicles can be controlled by tuning the density of the polymer ligands on the surface of the gold NPs. The strong absorption of the chain vesicles in the near-infrared (NIR) region leads to a much higher efficiency in photoacoustic (PA) imaging than for non-chain vesicles. The chain vesicles were further employed for the encapsulation of drugs and the NIR light triggered release of payloads. This work not only offers a new platform for controlling the hierarchical self-assembly of NPs, but also demonstrates that the physical properties of the materials can be tailored by controlling the spatial arrangement of NPs within assemblies to achieve a better performance in biomedical applications.
Collapse
Affiliation(s)
- Yijing Liu
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742 (USA)
| | - Jie He
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742 (USA)
| | - Kuikun Yang
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742 (USA)
| | - Chenglin Yi
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742 (USA)
| | - Yi Liu
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742 (USA)
| | - Liming Nie
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (USA)
| | - Niveen M Khashab
- Smart Hybrid Materials (SHMs) Lab, Department of Chemical Sciences and Engineering, Advanced Membranes and Porous Materials Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900 (Kingdom of Saudi Arabia)
| | - Xiaoyuan Chen
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (USA).
| | - Zhihong Nie
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742 (USA).
| |
Collapse
|
22
|
Liu Y, He J, Yang K, Yi C, Liu Y, Nie L, Khashab NM, Chen X, Nie Z. Folding Up of Gold Nanoparticle Strings into Plasmonic Vesicles for Enhanced Photoacoustic Imaging. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508616] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yijing Liu
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742 (USA)
| | - Jie He
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742 (USA)
| | - Kuikun Yang
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742 (USA)
| | - Chenglin Yi
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742 (USA)
| | - Yi Liu
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742 (USA)
| | - Liming Nie
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (USA)
| | - Niveen M. Khashab
- Smart Hybrid Materials (SHMs) Lab, Department of Chemical Sciences and Engineering, Advanced Membranes and Porous Materials Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955‐6900 (Kingdom of Saudi Arabia)
| | - Xiaoyuan Chen
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (USA)
| | - Zhihong Nie
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742 (USA)
| |
Collapse
|
23
|
Kundu PK, Samanta D, Leizrowice R, Margulis B, Zhao H, Börner M, Udayabhaskararao T, Manna D, Klajn R. Light-controlled self-assembly of non-photoresponsive nanoparticles. Nat Chem 2015. [DOI: 10.1038/nchem.2303] [Citation(s) in RCA: 369] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
24
|
Wang Y, Song X, Wang H, Chen H. Using Polystyrene-block-poly(acrylic acid)-coated Metal Nanoparticles as Monomers for Their Homo- and Co-polymerization. J Vis Exp 2015:e52954. [PMID: 26274566 DOI: 10.3791/52954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
We present a template-free method for "polymerizing" nanoparticles into long chains without side branches. A variety of nanoparticles are encapsulated in polystyrene-block-poly(acrylic acid) (PSPAA) shells and then used as monomers for their self-assembly. Spherical PSPAA micelles upon acid treatment are known to assemble into cylindrical micelles. Exploiting this tendency, the core-shell nanoparticles are induced to aggregate, coalesce, and then transform into long chains. When more than one type of nanoparticles are used, random and block "copolymers" of nanoparticles can be obtained. Detailed procedures are reported for the PSPAA encapsulation of nanoparticles, homo- and co-polymerization of the core-shell nanoparticles, separation and purification of the resulting nanoparticle chains. Transformations of single-line chains into double- and triple-line chains are also presented. The synergy between the polymer shell and the embedded nanoparticles leads to an unusual chain-growth polymerization mode, giving long nanoparticle chains that are distinct from the products of the traditional step-growth aggregation process.
Collapse
Affiliation(s)
- Yawen Wang
- Division of Chemistry and Biological Chemistry, Nanyang Technological University
| | - Xiohui Song
- Division of Chemistry and Biological Chemistry, Nanyang Technological University
| | - Hong Wang
- Division of Chemistry and Biological Chemistry, Nanyang Technological University
| | - Hongyu Chen
- Division of Chemistry and Biological Chemistry, Nanyang Technological University;
| |
Collapse
|
25
|
Xi C, Marina PF, Xia H, Wang D. Directed self-assembly of gold nanoparticles into plasmonic chains. SOFT MATTER 2015; 11:4562-71. [PMID: 25994925 DOI: 10.1039/c5sm00900f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The plasmonic behavior of metals at the nanoscale is not only appealing for fundamental studies, but also very useful for the development of innovative photonic devices. The past few decades have witnessed great progress in colloidal synthesis of monodisperse metal nanoparticles with defined shapes. This has significantly fueled up the research of directing the metal nanoparticles to self-assemble into tailored extended structures, especially low dimensional ones, for a better control and manipulation of the interactions of the metal nanoparticles with light. In parallel, theories for a better description of nanoplasmonics have been increasingly developed and improved. Thus, the present review is focused on the overview of current experimental and theoretical developments in the directed self-assembly of metal nanoparticles with tailored plasmonic properties, which, hopefully, will provide useful guidelines for future research studies and applications of nanoplasmonics.
Collapse
Affiliation(s)
- Chunxiao Xi
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China.
| | | | | | | |
Collapse
|
26
|
Qi X, Li M, Kuang Y, Wang C, Cai Z, Zhang J, You S, Yin M, Wan P, Luo L, Sun X. Controllable Assembly and Separation of Colloidal Nanoparticles through a One-Tube Synthesis Based on Density Gradient Centrifugation. Chemistry 2015; 21:7211-6. [PMID: 25809533 DOI: 10.1002/chem.201406507] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 01/26/2015] [Indexed: 11/11/2022]
Abstract
Self-assembly of gold nanoparticles into one-dimensional (1D) nanostructures with finite primary units was achieved by introducing a thin salt (NaCl) solution layer into density gradient before centrifugation. The electrostatic interactions between Au nanoparticles would be affected and cause 1D assembly upon passing through the salt layer. A negatively charged polymer such as poly(acrylic acid) was used as an encapsulation/stabilization layer to help the formation of 1D Au assemblies, which were subsequently sorted according to unit numbers at succeeding separation zones. A centrifugal field was introduced as the external field to overcome the random Brownian motion of NPs and benefit the assembly effect. Such a facile "one-tube synthesis" approach couples assembly and separation in one centrifuge tube by centrifuging once. The method can be tuned by changing the concentration of interference salt layer, encapsulation layer, and centrifugation rate. Furthermore, positively charged fluorescent polymers such as perylenediimide-poly(N,N-diethylaminoethyl methacrylate) could encapsulate the assemblies to give tunable fluorescence properties.
Collapse
Affiliation(s)
- Xiaohan Qi
- State Key Laboratory of Chemical Resource Engineering, P.O. Box 98, Beijing University of Chemical Technology, Beijing 100029 (P. R. China)
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Wang C, Ohodnicki PR, Su X, Keller M, Brown TD, Baltrus JP. Novel silica surface charge density mediated control of the optical properties of embedded optically active materials and its application for fiber optic pH sensing at elevated temperatures. NANOSCALE 2015; 7:2527-2535. [PMID: 25572664 DOI: 10.1039/c4nr06232a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Silica and silica incorporated nanocomposite materials have been extensively studied for a wide range of applications. Here we demonstrate an intriguing optical effect of silica that, depending on the solution pH, amplifies or attenuates the optical absorption of a variety of embedded optically active materials with very distinct properties, such as plasmonic Au nanoparticles, non-plasmonic Pt nanoparticles, and the organic dye rhodamine B (not a pH indicator), coated on an optical fiber. Interestingly, the observed optical response to varying pH appears to follow the surface charge density of the silica matrix for all the three different optically active materials. To the best of our knowledge, this optical effect has not been previously reported and it appears universal in that it is likely that any optically active material can be incorporated into the silica matrix to respond to solution pH or surface charge density variations. A direct application of this effect is for optical pH sensing which has very attractive features that can enable minimally invasive, remote, real time and continuous distributed pH monitoring. Particularly, as demonstrated here, using highly stable metal nanoparticles embedded in an inorganic silica matrix can significantly improve the capability of pH sensing in extremely harsh environments which is of increasing importance for applications in unconventional oil and gas resource recovery, carbon sequestration, water quality monitoring, etc. Our approach opens a pathway towards possible future development of robust optical pH sensors for the most demanding environmental conditions. The newly discovered optical effect of silica also offers the potential for control of the optical properties of optically active materials for a range of other potential applications such as electrochromic devices.
Collapse
Affiliation(s)
- Congjun Wang
- National Energy Technology Laboratory, U.S. Department of Energy, 626 Cochrans Mill Road, Pittsburgh, PA 15236, USA.
| | | | | | | | | | | |
Collapse
|
28
|
Li W, Kanyo I, Kuo CH, Thanneeru S, He J. pH-programmable self-assembly of plasmonic nanoparticles: hydrophobic interaction versus electrostatic repulsion. NANOSCALE 2015; 7:956-964. [PMID: 25463509 DOI: 10.1039/c4nr05743k] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We report a general strategy to conceptualize a new design for the pH-programmable self-assembly of plasmonic gold nanoparticles (AuNPs) tethered by random copolymers of poly(styrene-co-acrylic acid) (P(St-co-AA)). It is based on using pH as an external stimulus to reversibly change the surface charge of polymer tethers and to control the delicate balance of interparticle attractive and repulsive interactions. By incorporating -COOH moieties locally within PSt hydrophobic segments, the change in the ionization degree of -COOH moieties can dramatically disrupt the hydrophobic attraction within a close distance. pH acts as a key parameter to control the deprotonation of -COOH moieties and "programs" the assembled nanostructures of plasmonic nanoparticles in a stepwise manner. At a higher solution pH where -COOH groups of polymer tethers became highly deprotonated, electrostatic repulsion dominated the self-assembly and favored the formation of end-to-end, anisotropic assemblies, e.g. 1-D single-line chains. At a lower pH, the less deprotonated -COOH groups led to the decrease of electrostatic repulsion and the side-to-side aggregates, e.g. clusters and multi-line chains of AuNPs, became favorable. The pH-programmable self-assembly allowed us to engineer a "manual" program for a sequential self-assembly by changing the pH of the solution. We demonstrated that the two-step pH-programmable assembly could generate more sophisticated "multi-block" chains using two differently sized AuNPs. Our strategy offers a general means for the programmable design of plasmonic nanoparticles into the specific pre-ordained nanostructures that are potentially useful for the precise control over their plasmon coupling.
Collapse
Affiliation(s)
- Weikun Li
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA.
| | | | | | | | | |
Collapse
|
29
|
|
30
|
Abstract
Post growth of nanoparticles enables new nanostructure formation and blurs the boundary between crystals and molecules.
Collapse
Affiliation(s)
- Bing Ni
- Department of Chemistry
- Tsinghua University
- Beijing, China
| | - Xun Wang
- Department of Chemistry
- Tsinghua University
- Beijing, China
| |
Collapse
|
31
|
Wang Y, He J, Liu C, Chong WH, Chen H. Thermodynamik und Kinetik in der Nanosynthese. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402986] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
32
|
Wang Y, He J, Liu C, Chong WH, Chen H. Thermodynamics versus Kinetics in Nanosynthesis. Angew Chem Int Ed Engl 2014; 54:2022-51. [DOI: 10.1002/anie.201402986] [Citation(s) in RCA: 329] [Impact Index Per Article: 32.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Indexed: 12/29/2022]
|
33
|
Ding W, Li Y, Xia H, Wang D, Tao X. Synthesis of Janus particles via strain-driven microphase separation and their assembly into nanoscale vesicles. ACS NANO 2014; 8:11206-11213. [PMID: 25341081 DOI: 10.1021/nn503382v] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Janus particles, consisting of Fe3O4 nanoparticles and organic particles of the complexes of α-cyclodextrin and polyethylene glycol (5) nonylphenyl ether, have been successfully fabricated via strain-driven microphase separation, which is distinct from conventional surface wetting-driven microphase separation. The as-prepared Janus particles can self-assemble into hollow spheres, which draw a clear analogy with self-assembly of lipids to vesicles.
Collapse
Affiliation(s)
- Wenchao Ding
- State Key Laboratory of Crystal Materials, Shandong University , Jinan 250100, P. R. China
| | | | | | | | | |
Collapse
|
34
|
Yin Z, Zhang W, Fu Q, Yue H, Wei W, Tang P, Li W, Li W, Lin L, Ma G, Ma D. Construction of stable chainlike Au nanostructures via silica coating and exploration for potential photothermal therapy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:3619-3624. [PMID: 24861373 DOI: 10.1002/smll.201400474] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Revised: 04/10/2014] [Indexed: 06/03/2023]
Abstract
A facile one-pot approach is successfully developed to construct the stable Au nanochains with silica shell via self-assembly and classical Stöber process. The resulting Au chain@SiO2 nanoparticles holds great promise for serving as a safe, reusable, and high-performance photothermal agent against cancer.
Collapse
Affiliation(s)
- Zhen Yin
- State Key Laboratory of Hollow Fiber, Membrane Materials and Processes, Department of Chemical Engineering, Tianjin Polytechnic University, Tianjin, 300387, China
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Wang H, He Y, Chai Y, Yuan R. A super intramolecular self-enhanced electrochemiluminescence immunosensor based on polymer chains grafted on palladium nanocages. NANOSCALE 2014; 6:10316-10322. [PMID: 25072965 DOI: 10.1039/c4nr02808b] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
An intramolecular self-enhanced electrochemiluminescent derivative is prepared by grafting polystyrene (PS)-based polymer chains with pendant Ru(ii) luminophore from poly(ethylenimine) (PEI) on the surface of palladium nanocages (PdNCs). In this way, the Ru(ii) luminophore and its co-reactive group (amine groups in PEI) exist in the same polymer molecule, which shortens the electronic transmission distance between them and enhances the luminous stability. Meanwhile, through atom transfer radical polymerization (ATRP), the loading amount of Ru(ii) luminophore is greatly increased. Therefore, the obtained electrochemiluminescent derivative (PdNC-PEI-PSRu) has high luminous efficiency and stability. Furthermore, due to their special nanostructures of porous walls and hollow interiors, PdNCs have great advantages in high specific surface areas and good electrocatalytic ability, which make them act as an excellent immobilized platform for PEI and detection antibody. Based on the sandwiched immunoreactions, a sensitive "signal on" electrochemiluminescence immunosensor is constructed for the detection of carbohydrate antigen 15-3 (CA 15-3). As a result, a wide linear range from 0.01 U mL(-1) to 120 U mL(-1) is acquired with a relatively low detection limit of 0.003 U mL(-1).
Collapse
Affiliation(s)
- Haijun Wang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | | | | | | |
Collapse
|
36
|
Wang H, Song X, Liu C, He J, Chong WH, Chen H. Homo- and co-polymerization of polysytrene-block-poly(acrylic acid)-coated metal nanoparticles. ACS NANO 2014; 8:8063-8073. [PMID: 25000121 DOI: 10.1021/nn502084a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Amphiphilic block copolymers such as polystyrene-block-poly(acrylic acid) (PSPAA) give micelles that are known to undergo sphere-to-cylinder shape transformation. Exploiting this polymer property, core-shell nanoparticles coated in PSPAA can be "polymerized" into long chains following the chain-growth polymerization mode. This method is now extended to include a variety of different nanoparticles. A case study on the assembly process was carried out to understand the influence of the PAA block length, the surface ligand, and the size and morphology of the monomer nanoparticles. Shortening the PAA block promotes the reorganization of the amphiphilic copolymer in the micelles, which is essential for assembling large Au nanoparticles. Small Au nanoparticles can be directly "copolymerized" with empty PSPAA micelles into chains. The reaction time, acid quantity, and the [Au nanoparticles]/[PSPAA micelles] concentration ratio played important roles in controlling the sphere-cylinder-vesicle conversion of the PSPAA micelles, giving rise to different kinds of random "copolymers". With this knowledge, a general method is then developed to synthesize homo, random, and block "copolymers", where the basic units include small Au nanoparticles (d = 16 nm), large Au nanoparticles (d = 32 nm), Au nanorods, Te nanowires, and carbon nanotubes. Given the lack of means for assembling nanoparticles, advancing synthetic capabilities is of crucial importance. Our work provides convenient routes for combining nanoparticles into long-chain structures, facilitating rational design of complex nanostructures in the future.
Collapse
Affiliation(s)
- Hong Wang
- Division of Chemistry and Biological Chemistry, Nanyang Technological University , Singapore 637371
| | | | | | | | | | | |
Collapse
|
37
|
Wang H, Bai L, Chai Y, Yuan R. Synthesis of multi-fullerenes encapsulated palladium nanocage, and its application in electrochemiluminescence immunosensors for the detection of Streptococcus suis Serotype 2. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:1857-1865. [PMID: 24554632 DOI: 10.1002/smll.201303594] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Revised: 12/29/2013] [Indexed: 06/03/2023]
Abstract
A novel functionalized material is synthesized using surface-decorated fullerene (C60) to encapsulate hollow and porous palladium nanocages (PdNCs), and is applied to fabricate an electrochemiluminescence (ECL) immunosensor for the detection of Streptococcus suis Serotype 2 (SS2). PdNCs with hollow interiors and porous walls are prepared using a galvanic replacement reaction between silver nanocubes and metal precursor salts. Then, C60 reacts with L-cysteine (L-Cys) to form L-Cys functionalized C60 (C60-L-Cys), which has a better biocompatibility, conductivity, and hydrophilicity compared to C60 and possesses abundant -SH groups on the surface. Because of the special interaction between -SH and PdNCs, the obtained C60-L-Cys is adsorbed around the PdNCs to form an interesting structure with multiple spheres encapsulating the cage. The resultant functionalized material (C60 -L-Cys-PdNCs) has a high specific surface area, good electrocatalytic ability, and efficient photocatalytic activity, and is used to construct an ECL immunosensor for the detection of SS2. The ECL signal amplified strategy is performed by using the novel coreactant (C60-L-Cys) and in situ generation of O2 thus creating the S2O8(2-)-O2 ECL system. As a result, a wide linear detection range of 0.1 pg mL(-1) to 100 ng mL(-1) is acquired with a relatively low detection limit of 33.3 fg mL(-1).
Collapse
Affiliation(s)
- Haijun Wang
- Education Ministry Key Laboratory on Luminescence and Real-Time Analysis, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, P.R. China
| | | | | | | |
Collapse
|
38
|
Hill LJ, Richey NE, Sung Y, Dirlam PT, Griebel JJ, Lavoie-Higgins E, Shim IB, Pinna N, Willinger MG, Vogel W, Benkoski JJ, Char K, Pyun J. Colloidal polymers from dipolar assembly of cobalt-tipped CdSe@CdS nanorods. ACS NANO 2014; 8:3272-3284. [PMID: 24645795 DOI: 10.1021/nn406104d] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The synthesis of a modular colloidal polymer system based on the dipolar assembly of CdSe@CdS nanorods functionalized with a single cobalt nanoparticle "tip" (CoNP-tip) is reported. These heterostructured nanorods spontaneously self-assembled via magnetic dipolar associations of the cobalt domains. In these assemblies, CdSe@CdS nanorods were carried as densely grafted side chain groups along the dipolar NP chain to form bottlebrush-type colloidal polymers. Nanorod side chains strongly affected the conformation of individual colloidal polymer bottlebrush chains and the morphology of thin films. Dipolar CoNP-tipped nanorods were then used as "colloidal monomers" to form mesoscopic assemblies reminiscent of traditional copolymers possessing segmented and statistical compositions. Investigation of the phase behavior of colloidal polymer blends revealed the formation of mesoscopic phase separated morphologies from segmented colloidal copolymers. These studies demonstrated the ability to control colloidal polymer composition and morphology in a manner observed for classical polymer systems by synthetic control of heterostructured nanorod structure and harnessing interparticle dipolar associations.
Collapse
Affiliation(s)
- Lawrence J Hill
- Department of Chemistry and Biochemistry, University of Arizona , 1306 East University Boulevard, Tucson, Arizona 85721, United States
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
39
|
Liu K, Lukach A, Sugikawa K, Chung S, Vickery J, Therien-Aubin H, Yang B, Rubinstein M, Kumacheva E. Copolymerization of metal nanoparticles: a route to colloidal plasmonic copolymers. Angew Chem Int Ed Engl 2014; 53:2648-53. [PMID: 24520012 PMCID: PMC4000723 DOI: 10.1002/anie.201309718] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Revised: 12/11/2013] [Indexed: 01/12/2023]
Abstract
The resemblance between colloidal and molecular polymerization reactions is very useful in fundamental studies of polymerization reactions, as well as in the development of new nanoscale systems with desired properties. Future applications of colloidal polymers will require nanoparticle ensembles with a high degree of complexity that can be realized by hetero-assembly of NPs with different dimensions, shapes, and compositions. A method has been developed to apply strategies from molecular copolymerization to the co-assembly of gold nanorods with different dimensions into random and block copolymer structures (plasmonic copolymers). The approach was extended to the co-assembly of random copolymers of gold and palladium nanorods. A kinetic model validated and further expanded the kinetic theories developed for molecular copolymerization reactions.
Collapse
Affiliation(s)
- Kun Liu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012 (P. R. China). Department of Chemistry, University of Toronto, 80 Saint George street, Toronto M5S 3H6, Ontario (Canada)
| | - Ariella Lukach
- Department of Chemistry, University of Toronto, 80 Saint George street, Toronto M5S 3H6, Ontario (Canada)
| | - Kota Sugikawa
- Department of Chemistry, University of Toronto, 80 Saint George street, Toronto M5S 3H6, Ontario (Canada)
| | - Siyon Chung
- Department of Chemistry, University of Toronto, 80 Saint George street, Toronto M5S 3H6, Ontario (Canada)
| | - Jemma Vickery
- Department of Chemistry, University of Toronto, 80 Saint George street, Toronto M5S 3H6, Ontario (Canada)
| | - Heloise Therien-Aubin
- Department of Chemistry, University of Toronto, 80 Saint George street, Toronto M5S 3H6, Ontario (Canada)
| | - Bai Yang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012 (P. R. China)
| | - Michael Rubinstein
- Department of Chemistry, University of North Carolina, Chapel Hill, NC 27599–3290, USA
| | - Eugenia Kumacheva
- Department of Chemistry, University of Toronto, 80 Saint George street, Toronto M5S 3H6, Ontario (Canada)
| |
Collapse
|
40
|
Liu K, Lukach A, Sugikawa K, Chung S, Vickery J, Therien-Aubin H, Yang B, Rubinstein M, Kumacheva E. Copolymerization of Metal Nanoparticles: A Route to Colloidal Plasmonic Copolymers. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201309718] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
41
|
Klinkova A, Choueiri RM, Kumacheva E. Self-assembled plasmonic nanostructures. Chem Soc Rev 2014; 43:3976-91. [DOI: 10.1039/c3cs60341e] [Citation(s) in RCA: 241] [Impact Index Per Article: 24.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|