1
|
Su Q, Jiang C, Gou D, Long Y. Surface Plasmon-Assisted Fluorescence Enhancing and Quenching: From Theory to Application. ACS APPLIED BIO MATERIALS 2021; 4:4684-4705. [PMID: 35007020 DOI: 10.1021/acsabm.1c00320] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The integration of surface plasmon resonance and fluorescence yields a multiaspect improvement in surface fluorescence sensing and imaging, leading to a paradigm shift of surface plasmon-assisted fluorescence techniques, for example, surface plasmon enhanced field fluorescence spectroscopy, surface plasmon coupled emission (SPCE), and SPCE imaging. This Review aims to characterize the unique optical property with a common physical interpretation and diverse surface architecture-based measurements. The fundamental electromagnetic theory is employed to comprehensively unveil the fluorophore-surface plasmon interaction, and the associated surface-modification design is liberally highlighted to balance the surface plasmon-induced fluorescence-enhancement efforts and the surface plasmon-caused fluorescence-quenching effects. In particular, all types of surface structures, for example, silicon, carbon, protein, DNA, polymer, and multilayer, are systematically interrogated in terms of component, thickness, stiffness, and functionality. As a highly interdisciplinary and expanding field in physics, optics, chemistry, and surface chemistry, this Review could be of great interest to a broad readership, in particular, among physical chemists, analytical chemists, and in surface-based sensing and imaging studies.
Collapse
Affiliation(s)
- Qiang Su
- Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences and Oceanography, Carson International Cancer Center, Shenzhen University, 1066 Xueyuan Street, Nanshan District, Shenzhen 518055, Guangdong, China.,School of Chemistry, University of Birmingham, Edgbaston B15 2TT, Birmingham, United Kingdom
| | - Cheng Jiang
- Department of Chemistry, University of Oxford, Oxford OX1 3QZ, United Kingdom.,Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford OX3 9DU, United Kingdom
| | - Deming Gou
- Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences and Oceanography, Carson International Cancer Center, Shenzhen University, 1066 Xueyuan Street, Nanshan District, Shenzhen 518055, Guangdong, China
| | - Yi Long
- Clinical Research Center, Southern University of Science and Technology Hospital, 6019 Liuxian Street, Xili Avenue, Nanshan District, Shenzhen 518055, Guangdong, China
| |
Collapse
|
2
|
Raghavendra AJ, Zhu J, Gregory W, Case F, Mulpur P, Khan S, Srivastava A, Podila R. Chemiplasmonics for high-throughput biosensors. Int J Nanomedicine 2018; 13:8051-8062. [PMID: 30568445 PMCID: PMC6267718 DOI: 10.2147/ijn.s186644] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Background The sensitivity of ELISA for biomarker detection can be significantly increased by integrating fluorescence with plasmonics. In surface-plasmon-coupled emission, the fluorophore emission is generally enhanced through the so-called physical mechanism due to an increase in the local electric field. Despite its fairly high enhancement factors, the use of surface-plasmon-coupled emission for high-throughput and point-of-care applications is still hampered due to the need for expensive focusing optics and spectrometers. Methods Here, we describe a new chemiplasmonic-sensing paradigm for enhanced emission through the molecular interactions between aromatic dyes and C60 films on Ag substrates. Results A 20-fold enhancement in the emission from rhodamine B-labeled biomolecules can be readily elicited without quenching its red color emission. As a proof of concept, we demonstrate two model bioassays using: 1) the RhB–streptavidin and biotin complexes in which the dye was excited using an inexpensive laser pointer and the ensuing enhanced emission was recorded by a smartphone camera without the need for focusing optics and 2) high-throughput 96-well plate assay for a model antigen (rabbit immunoglobulin) that showed detection sensitivity as low as 6.6 pM. Conclusion Our results show clear evidence that chemiplasmonic sensors can be extended to detect biomarkers in a point-of-care setting through a smartphone in simple normal incidence geometry without the need for focusing optics. Furthermore, chemiplasmonic sensors also facilitate high-throughput screening of biomarkers in the conventional 96-well plate format with 10–20 times higher sensitivity.
Collapse
Affiliation(s)
| | - Jingyi Zhu
- Laboratory of Nano-biophysics, Clemson University, Clemson, SC 29634, USA,
| | - Wren Gregory
- Laboratory of Nano-biophysics, Clemson University, Clemson, SC 29634, USA,
| | - Fengjiao Case
- Laboratory of Nano-biophysics, Clemson University, Clemson, SC 29634, USA,
| | - Pradyumna Mulpur
- Clemson Nanomaterials Institute, Clemson University, Anderson, SC 29625, USA
| | - Shahzad Khan
- ABV-Indian Institute of Information Technology and Management, Gwalior, MP, India
| | - Anurag Srivastava
- ABV-Indian Institute of Information Technology and Management, Gwalior, MP, India
| | - Ramakrishna Podila
- Laboratory of Nano-biophysics, Clemson University, Clemson, SC 29634, USA,
| |
Collapse
|
3
|
Badiya PK, Srinivasan V, Jayakumar TP, Ramamurthy SS. Ag-CNT Architectures for Attomolar Dopamine Detection and 100-Fold Fluorescence Enhancements with Cellphone-Based Surface Plasmon-Coupled Emission Platform. Chemphyschem 2016; 17:2791-4. [PMID: 27338187 DOI: 10.1002/cphc.201600571] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Indexed: 11/07/2022]
Abstract
We report cellphone-based detection of dopamine with attomolar sensitivity in clinical samples with the use of a surface plasmon-coupled emission (SPCE) platform. To this end, silver-coated carbon nanotubes were used as spacer and cavity materials on SPCE substrates to obtain up to 100-fold fluorescence enhancements. The presence of silver on the carbon nanotubes helped to overcome fluorescence quenching arising due to π-π interactions between the carbon nanotube and rhodamine 6G. The competing adsorption of dopamine versus rhodamine 6G on graphene oxide was utilized to develop this sensing platform.
Collapse
Affiliation(s)
- Pradeep Kumar Badiya
- Plasmonics Laboratory, Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, Anantapur, Andhra Pradesh, 515134, India
| | - Venkatesh Srinivasan
- Plasmonics Laboratory, Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, Anantapur, Andhra Pradesh, 515134, India
| | - Tejkiran Pindi Jayakumar
- Plasmonics Laboratory, Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, Anantapur, Andhra Pradesh, 515134, India
| | - Sai Sathish Ramamurthy
- Plasmonics Laboratory, Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, Anantapur, Andhra Pradesh, 515134, India.
| |
Collapse
|
4
|
Mulpur P, Yadavilli S, Mulpur P, Kondiparthi N, Sengupta B, Rao AM, Podila R, Kamisetti V. Flexible Ag-C60 nano-biosensors based on surface plasmon coupled emission for clinical and forensic applications. Phys Chem Chem Phys 2016; 17:25049-54. [PMID: 26345678 DOI: 10.1039/c5cp04268b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The relatively low sensitivity of fluorescence detection schemes, which are mainly limited by the isotropic nature of fluorophore emission, can be overcome by utilizing surface plasmon coupled emission (SPCE). In this study, we demonstrate directional emission from fluorophores on flexible Ag-C60 SPCE sensor platforms for point-of-care sensing, in healthcare and forensic sensing scenarios, with at least 10 times higher sensitivity than traditional fluorescence sensing schemes. Adopting the highly sensitive Ag-C60 SPCE platform based on glass and novel low-cost flexible substrates, we report the unambiguous detection of acid-fast Mycobacterium tuberculosis (Mtb) bacteria at densities as low as 20 Mtb mm(-2); from non-acid-fast bacteria (e.g., E. coli and S. aureus), and the specific on-site detection of acid-fast sperm cells in human semen samples. In combination with the directional emission and high-sensitivity of SPCE platforms, we also demonstrate the utility of smartphones that can replace expensive and cumbersome detectors to enable rapid hand-held detection of analytes in resource-limited settings; a much needed critical advance to biosensors, for developing countries.
Collapse
Affiliation(s)
- Pradyumna Mulpur
- Department of Physics, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, 515134, India.
| | | | | | | | | | | | | | | |
Collapse
|
5
|
Srinivasan V, Vernekar D, Jaiswal G, Jagadeesan D, Ramamurthy SS. Earth Abundant Iron-Rich N-Doped Graphene Based Spacer and Cavity Materials for Surface Plasmon-Coupled Emission Enhancements. ACS APPLIED MATERIALS & INTERFACES 2016; 8:12324-9. [PMID: 27128348 DOI: 10.1021/acsami.5b12038] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We demonstrate for the first time the use of Fe-based nanoparticles on N-doped graphene as spacer and cavity materials and study their plasmonic effect on the spontaneous emission of a radiating dipole. Fe-C-MF was produced by pyrolizing FeOOH and melamine formaldehyde precursor on graphene, while Fe-C-PH was produced by pyrolizing the Fe-phenanthroline complex on graphene. The use of the Fe-C-MF composite consisting of Fe-rich crystalline phases supported on N-doped graphene presented a spacer material with 116-fold fluorescence enhancements. On the other hand, the Fe-C-PH/Ag based cavity resulted in an 82-fold enhancement in Surface Plasmon-Coupled Emission (SPCE), with high directionality and polarization of Rhodamine 6G (Rh6G) emission owing to Casimir and Purcell effects. The use of a mobile phone as a cost-effective fluorescence detection device in the present work opens up a flexible perspective for the study of different nanomaterials as tunable substrates in cavity mode and spacer applications.
Collapse
Affiliation(s)
- Venkatesh Srinivasan
- Plasmonics Laboratory, Department of Chemistry, Sri Sathya Sai Institute of Higher Learning , Prasanthi Nilayam Campus, Anantapur, Andhra Pradesh, India 515134
| | | | | | | | - Sai Sathish Ramamurthy
- Plasmonics Laboratory, Department of Chemistry, Sri Sathya Sai Institute of Higher Learning , Prasanthi Nilayam Campus, Anantapur, Andhra Pradesh, India 515134
| |
Collapse
|
6
|
Mulpur P, Yadavilli S, Rao AM, Kamisetti V, Podila R. MoS2/WS2/BN-Silver Thin-Film Hybrid Architectures Displaying Enhanced Fluorescence via Surface Plasmon Coupled Emission for Sensing Applications. ACS Sens 2016. [DOI: 10.1021/acssensors.5b00297] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pradyumna Mulpur
- Department
of Physics, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam 515134, India
| | - Sairam Yadavilli
- Department
of Physics, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam 515134, India
| | | | | | | |
Collapse
|
7
|
S. V, Badiya PK, Ramamurthy SS. Purcell factor based understanding of enhancements in surface plasmon-coupled emission with DNA architectures. Phys Chem Chem Phys 2016; 18:681-4. [DOI: 10.1039/c5cp05410a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tuning the Purcell factor with DNA architectures to realize >130-fold fluorescence enhancements in surface plasmon-coupled emission.
Collapse
Affiliation(s)
- Venkatesh S.
- Plasmonics Laboratory
- Department of Chemistry
- Sri Sathya Sai Institute of Higher Learning
- Prasanthi Nilayam Campus
- Anantapur
| | - Pradeep Kumar Badiya
- Plasmonics Laboratory
- Department of Chemistry
- Sri Sathya Sai Institute of Higher Learning
- Prasanthi Nilayam Campus
- Anantapur
| | - Sai Sathish Ramamurthy
- Plasmonics Laboratory
- Department of Chemistry
- Sri Sathya Sai Institute of Higher Learning
- Prasanthi Nilayam Campus
- Anantapur
| |
Collapse
|