1
|
Brisbin R, Bartolo M, Leville M, Rajan AK, Jahan B, McCloskey KE, Gopinathan A, Ghosh S, Baxter R. Tuning three-dimensional nano-assembly in the mesoscale via bis(imino)pyridine molecular functionalization. Sci Rep 2022; 12:844. [PMID: 35039592 PMCID: PMC8764047 DOI: 10.1038/s41598-022-04851-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 12/29/2021] [Indexed: 11/08/2022] Open
Abstract
We investigate the effect of bis(imino)pyridine (BIP) ligands in guiding self-assembly of semiconducting CdSe/ZnS quantum dots (QDs) into three-dimensional multi-layered shells with diameters spanning the entire mesoscopic range, from 200 nm to 2 μm. The assembly process is directed by guest-host interactions between the BIP ligands and a thermotropic liquid crystal (LC), with the latter's phase transition driving the process. Characterization of the shell structures, through scanning electron microscopy and dynamic light scattering, demonstrates that the average shell diameter depends on the BIP structure, and that changing one functional group in the chemical scaffold allows systematic tuning of shell sizes across the entire range. Differential scanning calorimetry confirms a relationship between shell sizes and the thermodynamic perturbation of the BIP molecules to the LC phase transition temperature, allowing analytical modeling of shell assembly energetics. This novel mechanism to controllably tune shell sizes over the entire mesoscale via one standard protocol is a significant development for research on in situ cargo/drug delivery platforms using nano-assembled structures.
Collapse
Affiliation(s)
- Ryan Brisbin
- Department of Chemistry and Biochemistry, University of California, Merced, CA, 95343, USA
| | - Mark Bartolo
- Material and Biomaterial Sciences and Engineering, School of Engineering, University of California, Merced, CA, 95343, USA
| | - Michael Leville
- Department of Physics, University of California, Merced, CA, 95343, USA
| | - Arya K Rajan
- Department of Physics, University of California, Merced, CA, 95343, USA
| | - Basharat Jahan
- Material and Biomaterial Sciences and Engineering, School of Engineering, University of California, Merced, CA, 95343, USA
| | - Kara E McCloskey
- Material and Biomaterial Sciences and Engineering, School of Engineering, University of California, Merced, CA, 95343, USA
| | - Ajay Gopinathan
- Department of Physics, University of California, Merced, CA, 95343, USA
| | - Sayantani Ghosh
- Department of Physics, University of California, Merced, CA, 95343, USA.
| | - Ryan Baxter
- Department of Chemistry and Biochemistry, University of California, Merced, CA, 95343, USA.
| |
Collapse
|
2
|
Wu J, Chen S, Jia W. Robust phase transfer, 3D-assembly and SERS application of multi-shaped gold nanoparticles. J DISPER SCI TECHNOL 2021. [DOI: 10.1080/01932691.2019.1710527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Junwen Wu
- Sinopec Research Institute of Petroleum Exploration & Development, Beijing, P. R. China
| | - Songhua Chen
- College of Chemistry and Material Science, Longyan University, Longyan, P. R. China
| | - Wenfeng Jia
- Sinopec Research Institute of Petroleum Engineering, Beijing, P. R. China
| |
Collapse
|
3
|
Zhao W, Zhang Y, Yang J, Li J, Feng Y, Quan M, Yang Z, Xiao S. Synergistic plasmon resonance coupling and light capture in ordered nanoarrays as ultrasensitive and reproducible SERS substrates. NANOSCALE 2020; 12:18056-18066. [PMID: 32614342 DOI: 10.1039/d0nr02972f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
An effective SERS substrate for on-field detection needs to satisfy high sensitivity to analyte and signal reproducibility even in the special case of tilting or bending of substrates. Herein, we transferred monolayer AuNPs into a nanocavity to construct a Au particle-in-hemispherical honeycomb nanoarray (PIHHN) as an ultrasensitive and spatially reproducible SERS substrate. The capacity of detection for R6G in an optimal PIHHN substrate is as low as a concentration of 10-15 M, and the RSD of signal deviation is no more than 5.6%. FDTD simulations explain that placing AuNPs into a metallic nanocavity can capture and focus the light field to improve the interaction between the light and the substrate and provide the collective effect of multiple plasmon coupling, which can induce a stronger electromagnetic field. In addition, the system can generate more hot spots between AuNPs and between AuNPs and the metallic nanocavity. In particular, when the substrate is tilted or bent at an angle from 0° to 60°, the SERS performance remains stable due to the rotational symmetry of the PIHHN structure, which demonstrates the capability of on-field detection. Furthermore, the PIHHN substrate is employed as a highly sensitive multiplex sensor in on-field analysis for contaminated soil, achieving the detection of analytes down to 0.5 ppb.
Collapse
Affiliation(s)
- Weidong Zhao
- Department of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China.
| | | | | | | | | | | | | | | |
Collapse
|
4
|
Zhang J, Gim S, Paris G, Dallabernardina P, Schmitt CNZ, Eickelmann S, Loeffler FF. Ultrasonic-Assisted Synthesis of Highly Defined Silver Nanodimers by Self-Assembly for Improved Surface-Enhanced Raman Spectroscopy. Chemistry 2020; 26:1243-1248. [PMID: 31834652 PMCID: PMC7027530 DOI: 10.1002/chem.201904518] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Indexed: 11/29/2022]
Abstract
Considerable research efforts have been devoted to surface-enhanced Raman spectroscopy (SERS), due to its excellent performance in biosensing and imaging. Here, a novel and facile strategy for the fabrication of well-defined and uniform nanodimers as SERS substrates is presented. By the assistance of ultrasound, the violent polyol process for particle generation becomes controllable, enabling the self-assembly of nanostars to nanodimers. Moreover, the aggregation of nanodimers can be easily tuned by post-ultrasonic treatment, which gives a sensitive substrate for SERS.
Collapse
Affiliation(s)
- Junfang Zhang
- Department of Biomolecular SystemsMax Planck Institute of Colloids and InterfacesAm Mühlenberg 114476PotsdamGermany
| | - Soeun Gim
- Department of Biomolecular SystemsMax Planck Institute of Colloids and InterfacesAm Mühlenberg 114476PotsdamGermany
| | - Grigori Paris
- Department of Biomolecular SystemsMax Planck Institute of Colloids and InterfacesAm Mühlenberg 114476PotsdamGermany
| | - Pietro Dallabernardina
- Department of Biomolecular SystemsMax Planck Institute of Colloids and InterfacesAm Mühlenberg 114476PotsdamGermany
| | - Clemens N. Z. Schmitt
- Department of BiomaterialsMax Planck Institute of Colloids and InterfacesAm Mühlenberg 114476PotsdamGermany
| | - Stephan Eickelmann
- Department of Biomolecular SystemsMax Planck Institute of Colloids and InterfacesAm Mühlenberg 114476PotsdamGermany
| | - Felix F. Loeffler
- Department of Biomolecular SystemsMax Planck Institute of Colloids and InterfacesAm Mühlenberg 114476PotsdamGermany
| |
Collapse
|
5
|
Grötsch RK, Wanzke C, Speckbacher M, Angı A, Rieger B, Boekhoven J. Pathway Dependence in the Fuel-Driven Dissipative Self-Assembly of Nanoparticles. J Am Chem Soc 2019; 141:9872-9878. [PMID: 31194525 DOI: 10.1021/jacs.9b02004] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We describe the self-assembly of gold and iron oxide nanoparticles regulated by a chemical reaction cycle that hydrolyzes a carbodiimide-based fuel. In a reaction with the chemical fuel, the nanoparticles are chemically activated to a state that favors assembling into clusters. The activated state is metastable and decays to the original precursor reversing the assembly. The dynamic interplay of activation and deactivation results in a material of which the behavior is regulated by the amount of fuel added to the system; they either did not assemble, assembled transiently, or assembled permanently in kinetically trapped clusters. Because of the irreversibility of the kinetically trapped clusters, we found that the behavior of the self-assembly was prone to hysteresis effects. The final state of the system in the energy landscape depended on the pathway of preparation. For example, when a large amount of fuel was added at once, the material would end up kinetically trapped in a local minimum. When the same amount of fuel was added in small batches with sufficient time for the system to re-equilibrate, the final state would be the global minimum. A better understanding of pathway complexity in the energy landscape is crucial for the development of fuel-driven supramolecular materials.
Collapse
Affiliation(s)
| | | | - Maximilian Speckbacher
- Molecular Electronics, Department of Electrical and Computer Engineering , Technical University of Munich , Thersienstraße 90 , 80333 Munich , Germany
| | - Arzu Angı
- Wacker-Chair of Macromolecular Chemistry , Catalysis Research Center , Ernst-Otto-Fischer-Straße 1 , 85747 Garching , Germany
| | - Bernhard Rieger
- Wacker-Chair of Macromolecular Chemistry , Catalysis Research Center , Ernst-Otto-Fischer-Straße 1 , 85747 Garching , Germany
| | | |
Collapse
|