1
|
Verdin A, Malherbe C, Sloan-Dennison S, Faulds K, Graham D, Eppe G. Thiol-polyethylene glycol-folic acid (HS-PEG-FA) induced aggregation of Au@Ag nanoparticles: A SERS and extinction UV-Vis spectroscopy combined study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 322:124848. [PMID: 39032228 DOI: 10.1016/j.saa.2024.124848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 07/15/2024] [Accepted: 07/17/2024] [Indexed: 07/23/2024]
Abstract
Plasmonic colloidal nanoparticles (NPs) functionalised with polymers are widely employed in diverse applications, offering advantages demonstrated over non-functionalised NPs such as enhanced colloidal stability or increased biocompatibility. However, functionalisation with polymers does not always increase the stability of the colloidal system. This work explores the intricate relationship between the functionalisation of plasmonic core@shell Au@Ag nanoparticles (NPs) with thiol-polyethylene glycol-folic acid (HS-PEG-FA) polymer chains and the resulting stability and spectral characteristics of Surface-Enhanced Raman Scattering (SERS) nanotags based on these NPs. We demonstrate that varying levels of HS-PEG-FA grafting influence nanotag stability, with a low level of grafting causing aggregation and subsequently affecting the spectral signature of Raman-reporter molecules attached to the surface of the NP. Electrostatic destabilisation is identified as the primary mechanism driving aggregation, impacting the SERS spectrum of Malachite Green isothiocyanate (MGITC) whose spectral shape is different between the aggregated and non-aggregated NPs. The findings provide valuable insights into NPs stability under different conditions, offering essential considerations for the design and optimisation of SERS nanotags in bio-analytical applications, particularly those involving data processing based on spectral shape, such as in multiplex approaches where experimental spectra are decomposed with several reference components.
Collapse
Affiliation(s)
- Alexandre Verdin
- Mass Spectrometry Laboratory, MolSys Research Unit, University of Liège, Belgium.
| | - Cedric Malherbe
- Mass Spectrometry Laboratory, MolSys Research Unit, University of Liège, Belgium
| | - Sian Sloan-Dennison
- Department of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow G1 1RD, UK
| | - Karen Faulds
- Department of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow G1 1RD, UK
| | - Duncan Graham
- Department of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow G1 1RD, UK
| | - Gauthier Eppe
- Mass Spectrometry Laboratory, MolSys Research Unit, University of Liège, Belgium
| |
Collapse
|
2
|
Sun H, Sun R, Yang D, Li Q, Jiang W, Zhou T, Bai R, Zhong F, Zhang B, Xiang J, Liu J, Tang Y, Yao L. A Cyanine Dye for Highly Specific Recognition of Parallel G-Quadruplex Topology and Its Application in Clinical RNA Detection for Cancer Diagnosis. J Am Chem Soc 2024; 146:22736-22746. [PMID: 39078265 DOI: 10.1021/jacs.4c07698] [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: 07/31/2024]
Abstract
G-quadruplex (G4), an unconventional nucleic acid structure, shows polymorphism in its topological morphology. The parallel G4 topology is the most prevalent form in organisms and plays a regulatory role in many biological processes. Designing fluorescent probes with high specificity for parallel G4s is important but challenging. Herein, a supramolecular assembly of the anionic cyanine dye SCY-5 is reported, which selectively identifies parallel G4 topology. SCY-5 can clearly distinguish parallel G4s from other G4s and non-G4s, even including hybrid-type G4s with parallel characteristics. The high specificity mechanism of SCY-5 involves a delicate balance between electrostatic repulsion and π-π interaction between SCY-5 and G4s. Using SCY-5, cellular RNA extracted from peripheral venous blood was quantitatively detected, and a remarkable increase in RNA G4 content in cancer patients compared to healthy volunteers was confirmed for the first time. This study provides new insights for designing specific probes for parallel G4 topology and opens a new path for clinical cancer diagnosis using RNA G4 as a biomarker.
Collapse
Affiliation(s)
- Hongxia Sun
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ranran Sun
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Dawei Yang
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China
| | - Qian Li
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenna Jiang
- Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | - Tianxing Zhou
- Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | - Ruiyang Bai
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China
| | - Fanru Zhong
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China
| | - Boyang Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China
| | - Junfeng Xiang
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jing Liu
- Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
- Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
| | - Yalin Tang
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Li Yao
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| |
Collapse
|
3
|
Elsherbiny AS, Galal A, Ghoneem KM, Salahuddin NA. Graphene oxide-based nanocomposites for outstanding eco-friendly antifungal potential against tomato phytopathogens. BIOMATERIALS ADVANCES 2024; 160:213863. [PMID: 38642516 DOI: 10.1016/j.bioadv.2024.213863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 04/01/2024] [Accepted: 04/15/2024] [Indexed: 04/22/2024]
Abstract
To obtain the collaborative antifungal potential of nanocomposites conjugated with graphene oxide (GO), a combination of GO with chitosan (CS/GO) and GO with chitosan (CS) and polyaniline (PANI/CS/GO) was carried out. The synthesized GO-nanocomposites were recognized by several techniques. Vanillin (Van.) and cinnamaldehyde (Cinn.) were loaded on the prepared nanocomposites as antioxidants through a batch adsorption process. In vitro release study of Van. and Cinn. from the nanocomposites was accomplished at pH 7 and 25°C. The antimicrobial activity of GO, CS/GO, and PANI/CS/GO was studied against tomato Fusarium oxysporum (FOL) and Pythium debaryanum (PYD) pathogens. The loaded ternary composite PANI/CS/GO exhibited the best percent of reduction against the two pathogens in vitro studies. The Greenhouse experiment revealed that seedlings' treatment by CS/GO/Van. and PANI/CS/GO/Van significantly lowered both disease index and disease incidence. The loaded CS/GO and PANI/CS/GO nanocomposites had a positive effect on lengthening shoots. Additionally, when CS/GO/Cinn., CS/GO/Van. and PANI/CS/GO/Van. were used, tomato seedlings' photosynthetic pigments dramatically increased as compared to infected control. The results show that these bio-nanocomposites can be an efficient, sustainable, nontoxic, eco-friendly, and residue-free approach for fighting fungal pathogens and improving plant growth.
Collapse
Affiliation(s)
- Abeer S Elsherbiny
- Department of Chemistry, Faculty of Science, Tanta University, Tanta 31527, Egypt.
| | - Alyaa Galal
- Department of Chemistry, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - Khalid M Ghoneem
- Seed Pathology Research Department, Plant Pathology Research Institute, Agricultural Research Center (ID: 60019332), Giza 12112, Egypt
| | - Nehal A Salahuddin
- Department of Chemistry, Faculty of Science, Tanta University, Tanta 31527, Egypt
| |
Collapse
|
4
|
Ferrera-González J, González-Béjar M, Pérez-Prieto J. Synergistic or antagonistic effect of lanthanides on Rose Bengal photophysics in upconversion nanohybrids? NANOSCALE 2023. [PMID: 38050867 DOI: 10.1039/d3nr03774f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
A nanohybrid made of a xanthenic dye, rose bengal, grafted to an ytterbium and erbium codoped upconversion nanoparticle (UCNP) served as a proof-of-concept to evaluate the fundamental mechanisms which govern the dye photophysics upon interaction with the UCNP. Both photoactive lanthanides strongly influence the singlet and triplet excited states of rose bengal.
Collapse
Affiliation(s)
- Juan Ferrera-González
- Instituto de Ciencia Molecular (ICMol), Departamento de Química Orgánica, Universitat de València, C/ Catedrático José Beltrán, 2, Paterna, Valencia 46980, Spain.
| | - María González-Béjar
- Instituto de Ciencia Molecular (ICMol), Departamento de Química Orgánica, Universitat de València, C/ Catedrático José Beltrán, 2, Paterna, Valencia 46980, Spain.
| | - Julia Pérez-Prieto
- Instituto de Ciencia Molecular (ICMol), Departamento de Química Orgánica, Universitat de València, C/ Catedrático José Beltrán, 2, Paterna, Valencia 46980, Spain.
| |
Collapse
|
5
|
Dar N, Ankari R. Theoretical Models, Preparation, Characterization and Applications of Cyanine J-Aggregates: A Minireview. ChemistryOpen 2022; 11:e202200103. [PMID: 36423932 PMCID: PMC9691386 DOI: 10.1002/open.202200103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 10/08/2022] [Indexed: 11/27/2022] Open
Abstract
Cyanines are one of the few kinds of molecules whose absorbance and emission can be shifted in a broad spectral range from the ultraviolet to the near infrared. They can easily transform into J-aggregates with narrow absorption and emission peaks, along with a redshift in their spectra. This mini-review presents cyanine dyes and their J-aggregates and discusses their structure and spectral properties that illustrate their specificities. We summarize the theoretical and experimental state of the art on cyanine J-aggregates and their applications, also laying the groundwork for cyanine J-aggregates synthesis and characterization methods.
Collapse
Affiliation(s)
- Nitzan Dar
- Department of PhysicsFaculty of Natural ScienceAriel UniversityAriel40700Israel
| | - Rinat Ankari
- Department of PhysicsFaculty of Natural ScienceAriel UniversityAriel40700Israel
| |
Collapse
|
6
|
Yu JH, Steinberg I, Davis RM, Malkovskiy AV, Zlitni A, Radzyminski RK, Jung KO, Chung DT, Curet LD, D'Souza AL, Chang E, Rosenberg J, Campbell J, Frostig H, Park SM, Pratx G, Levin C, Gambhir SS. Noninvasive and Highly Multiplexed Five-Color Tumor Imaging of Multicore Near-Infrared Resonant Surface-Enhanced Raman Nanoparticles In Vivo. ACS NANO 2021; 15:19956-19969. [PMID: 34797988 PMCID: PMC9012519 DOI: 10.1021/acsnano.1c07470] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In vivo multiplexed imaging aims for noninvasive monitoring of tumors with multiple channels without excision of the tissue. While most of the preclinical imaging has provided a number of multiplexing channels up to three, Raman imaging with surface-enhanced Raman scattering (SERS) nanoparticles was suggested to offer higher multiplexing capability originating from their narrow spectral width. However, in vivo multiplexed SERS imaging is still in its infancy for multichannel visualization of tumors, which require both sufficient multiplicity and high sensitivity concurrently. Here we create multispectral palettes of gold multicore-near-infrared (NIR) resonant Raman dyes-silica shell SERS (NIR-SERRS) nanoparticle oligomers and demonstrate noninvasive and five-plex SERS imaging of the nanoparticle accumulation in tumors of living mice. We perform the five-plex ratiometric imaging of tumors by varying the administered ratio of the nanoparticles, which simulates the detection of multiple biomarkers with different expression levels in the tumor environment. Furthermore, since this method does not require the excision of tumor tissues at the imaging condition, we perform noninvasive and longitudinal imaging of the five-color nanoparticles in the tumors, which is not feasible with current ex vivo multiplexed tissue analysis platforms. Our work surpasses the multiplicity limit of previous preclinical tumor imaging methods while keeping enough sensitivity for tumor-targeted in vivo imaging and could enable the noninvasive assessment of multiple biological targets within the tumor microenvironment in living subjects.
Collapse
Affiliation(s)
- Jung Ho Yu
- Department of Radiology, Stanford University School of Medicine, Stanford, California 94305, United States
- Molecular Imaging Program at Stanford (MIPS) and Bio-X Program, Stanford University, Stanford, California 94305, United States
| | - Idan Steinberg
- Department of Radiology, Stanford University School of Medicine, Stanford, California 94305, United States
- Molecular Imaging Program at Stanford (MIPS) and Bio-X Program, Stanford University, Stanford, California 94305, United States
| | - Ryan M Davis
- Department of Radiology, Stanford University School of Medicine, Stanford, California 94305, United States
- Molecular Imaging Program at Stanford (MIPS) and Bio-X Program, Stanford University, Stanford, California 94305, United States
| | - Andrey V Malkovskiy
- Department of Plant Biology, Carnegie Institute for Science, Stanford, California 94305, United States
| | - Aimen Zlitni
- Department of Radiology, Stanford University School of Medicine, Stanford, California 94305, United States
- Molecular Imaging Program at Stanford (MIPS) and Bio-X Program, Stanford University, Stanford, California 94305, United States
| | - Rochelle Karina Radzyminski
- Department of Radiology, Stanford University School of Medicine, Stanford, California 94305, United States
- Department of Applied Physics, Stanford University, Stanford, California 94305, United States
| | - Kyung Oh Jung
- Molecular Imaging Program at Stanford (MIPS) and Bio-X Program, Stanford University, Stanford, California 94305, United States
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, California 94305, United States
| | - Daniel Tan Chung
- Department of Radiology, Stanford University School of Medicine, Stanford, California 94305, United States
- Molecular Imaging Program at Stanford (MIPS) and Bio-X Program, Stanford University, Stanford, California 94305, United States
| | - Luis Dan Curet
- Department of Radiology, Stanford University School of Medicine, Stanford, California 94305, United States
- Molecular Imaging Program at Stanford (MIPS) and Bio-X Program, Stanford University, Stanford, California 94305, United States
| | - Aloma L D'Souza
- Department of Radiology, Stanford University School of Medicine, Stanford, California 94305, United States
- Molecular Imaging Program at Stanford (MIPS) and Bio-X Program, Stanford University, Stanford, California 94305, United States
| | - Edwin Chang
- Department of Radiology, Stanford University School of Medicine, Stanford, California 94305, United States
- Molecular Imaging Program at Stanford (MIPS) and Bio-X Program, Stanford University, Stanford, California 94305, United States
| | - Jarrett Rosenberg
- Department of Radiology, Stanford University School of Medicine, Stanford, California 94305, United States
| | - Jos Campbell
- Department of Radiology, Stanford University School of Medicine, Stanford, California 94305, United States
- Molecular Imaging Program at Stanford (MIPS) and Bio-X Program, Stanford University, Stanford, California 94305, United States
| | - Hadas Frostig
- Department of Radiology, Stanford University School of Medicine, Stanford, California 94305, United States
- Molecular Imaging Program at Stanford (MIPS) and Bio-X Program, Stanford University, Stanford, California 94305, United States
| | - Seung-Min Park
- Department of Radiology, Stanford University School of Medicine, Stanford, California 94305, United States
- Molecular Imaging Program at Stanford (MIPS) and Bio-X Program, Stanford University, Stanford, California 94305, United States
| | - Guillem Pratx
- Molecular Imaging Program at Stanford (MIPS) and Bio-X Program, Stanford University, Stanford, California 94305, United States
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, California 94305, United States
| | - Craig Levin
- Department of Radiology, Stanford University School of Medicine, Stanford, California 94305, United States
- Molecular Imaging Program at Stanford (MIPS) and Bio-X Program, Stanford University, Stanford, California 94305, United States
| | - Sanjiv S Gambhir
- Department of Radiology, Stanford University School of Medicine, Stanford, California 94305, United States
- Molecular Imaging Program at Stanford (MIPS) and Bio-X Program, Stanford University, Stanford, California 94305, United States
| |
Collapse
|
7
|
Pyo K, Xu H, Han SM, Saxena S, Yoon SY, Wiederrecht G, Ramakrishna G, Lee D. Synthesis and Photophysical Properties of Light-Harvesting Gold Nanoclusters Fully Functionalized with Antenna Chromophores. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2004836. [PMID: 33559347 DOI: 10.1002/smll.202004836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 11/25/2020] [Indexed: 06/12/2023]
Abstract
The development of efficient light-harvesting systems is important to understand the key aspects of solar-energy conversion processes and to utilize them in various photonic applications. Here, atomically well-defined gold nanoclusters are reported as a new platform to fabricate artificial light-harvesting systems. An efficient amide coupling method is developed to synthesize water-soluble Au22 clusters fully protected with pyrene chromophores by taking advantage of their facile phase-transfer reaction. The synthesized Au22 clusters with densely packed 18 pyrene chromophores (Au22 -PyB18 ) exhibit triple-emission in blue, green, and red wavelength regions arising respectively from pyrene monomer, pyrene excimer, and Au22 emission, producing bright white light emission together. The photoluminescence of Au22 is enhanced by more than tenfold, demonstrating that pyrenes at the periphery efficiently channel the absorbed energy to the luminescent Au22 at the center. A combination of femtosecond transient absorption and anisotropy measurements of Au22 -PyB18 explicitly reveals three main decay components of 220 fs, 3.5 ps, and 160 ps that can be assigned to energy migration between pyrenes and energy transfer processes from pyrene monomer and excimer to the central Au22 , respectively.
Collapse
Affiliation(s)
- Kyunglim Pyo
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | - Hongmei Xu
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | - Sang Myeong Han
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | - Shivi Saxena
- Department of Chemistry, Western Michigan University, Kalamazoo, MI, 49008, USA
| | - Sook Young Yoon
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | - Gary Wiederrecht
- Center for Nanoscale Materials, Argonne National Laboratory, Chicago, IL, 60439, USA
| | - Guda Ramakrishna
- Department of Chemistry, Western Michigan University, Kalamazoo, MI, 49008, USA
| | - Dongil Lee
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| |
Collapse
|
8
|
Preparation of Pd–Ni Nanoparticles Supported on Activated Carbon for Efficient Removal of Basic Blue 3 from Water. WATER 2021. [DOI: 10.3390/w13091211] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Pd–Ni nanoparticles supported on activated carbon (Pd–Ni/AC) were prepared using a phase transfer method. The purpose of synthesizing ternary composites was to enhance the surface area of synthesized Pd–Ni nanoparticles, as they have a low surface area. The resulting composite was characterized by scanning electronic microscopy (SEM), X-ray diffraction (XRD) and energy-dispersive X-ray spectroscopy (EDX) for investigating its surface morphology, particle size, percentage of crystallinity and elemental composition, respectively. The XRD data and EDX analysis revealed the presence of Pd–Ni alloys impregnated on the AC. Pd–Ni/AC was used as an adsorbent for the removal of the azo dye basic blue 3 from an aqueous medium. Kinetic and isotherm models were used to calculate the adsorption parameters. The most suitable kinetic model amongst the applied models was the pseudo-second-order model, confirming the chemisorption characteristics of the process, and the most suitable isotherm model was the Langmuir model, with a maximum adsorption capacity of 333 mg/g at 333 K. Different experimental parameters, such as the adsorbent dosage, pH, temperature and contact time, were optimized. The optimum parameters reached were: a pH of 12, temperature of 333 K, adsorbent dosage of 0.01 g and optimum contact time of 30 min. Moreover, the thermodynamics parameters of adsorption, such as Gibbs free energy (ΔG°), enthalpy (ΔH°) and entropy (ΔS°), showed the adsorption processes being exothermic with values of ΔH° equal to −6.206 kJ/mol and being spontaneous with ΔG° values of −13.297, −13.780 and −14.264 kJ/mol, respectively at 293, 313 and 333 K. An increase in entropy change (ΔS°) with a value of 0.0242 kJ/mol K, indicated the enhanced disorder at a solid–solution interface during the adsorption process. Recycling the adsorbent for six cycles with sodium hydroxide and ethanol showed a decline in the efficiency of the selected azo dye basic blue 3 up to 79%. The prepared ternary composite was found effective in the removal of the selected dye. The removal of other pollutants represents one of the possible future uses of the prepared adsorbent, but further experiments are required.
Collapse
|
9
|
Yu G, Walker M, Wilson MR. Atomistic simulation studies of ionic cyanine dyes: self-assembly and aggregate formation in aqueous solution. Phys Chem Chem Phys 2021; 23:6408-6421. [PMID: 33705506 DOI: 10.1039/d0cp06205g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Cyanine dyes are known to form large-scale aggregates of various morphologies via spontaneous self-assembly in aqueous solution, akin to chromonic liquid crystals. Atomistic molecular dynamics simulations have been performed on four cyanine dyes: pseudoisocyanine chloride (PIC), pinacyanol chloride (PCYN), 5,5',6,6'-tetrachloro-1,1',3,3'-tetraethylbenzimidazolylcarbocyanine chloride (TTBC) and 1,1'-disulfopropyl-3,3'-diethyl-5,5',6,6'-tetrachloro-benzimidazolylcarbocyanine sodium salt (BIC). Simulations employed an optimised general AMBER force field and demonstrate the organisation of the dyes into stacked structures at dilute concentrations. The thermodynamics of self-assembly was studied by calculating potentials of mean force for n-mers (n = 2, 3 or 4), from which the free energies of association are determined. We report binding free energies in the range of 8 to 15kBT for dimerisation, concordant with typical values for ionic chromonics (7 to 14kBT), and examine the enthalpic and entropic contributions to the aggregation process. The self-assembly of these dyes yields two distinct classes of structures. We observe the formation of H-aggregate stacks for PCYN, with further complexity in these assemblies for PIC; where the aggregates contain shift and Y junction defects. TTBC and BIC associate into a J-aggregate sheet structure of unimolecular thickness, and is composed of a brickwork arrangement between molecules. These sheet structures are characteristic of the smectic chromonic mesophase, and such assemblies provide a route to the emergence of nanoscale tubular architectures.
Collapse
Affiliation(s)
- Gary Yu
- Department of Chemistry, Durham University, Lower Mountjoy, Stockton Road, Durham, UK.
| | | | | |
Collapse
|
10
|
Kumar PPP, Rahman A, Goswami T, Ghosh HN, Neelakandan PP. Fine-Tuning Plasmon-Molecule Interactions in Gold-BODIPY Nanocomposites: The Role of Chemical Structure and Noncovalent Interactions. Chempluschem 2020; 86:87-94. [PMID: 33058562 DOI: 10.1002/cplu.202000545] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 09/28/2020] [Indexed: 01/06/2023]
Abstract
Strong coupling between localized surface plasmons and molecular absorptions leads to remarkable changes in the photophysical properties of dye-loaded metal nanoparticles. Here, we report supramolecular nanocomposites consisting of BODIPY, tryptophan, and gold nanoparticles, and investigate the effect of structural variations on their photophysical properties. Our results indicate that the photostability and photosensitization properties of the nanocomposites depend on the chemical composition of the BODIPY molecules. The singlet oxygen quantum yield of the nanocomposites NC1 (BODIPY, B1 bearing a single methyl group) and NC3 (BODIPY, B3 with 5 methyl and 2 iodo groups) were 0.46 and 0.42, respectively, which were significantly higher compared to their individual components. Ultrafast spectroscopy studies revealed that the migration of photoexcited BODIPY electrons to the plasmonic photoexcitation allowed electron transfer into the singlet oxygen states, thereby leading to efficient generation of singlet oxygen.
Collapse
Affiliation(s)
- P P Praveen Kumar
- Institute of Nano Science and Technology, Habitat Centre, Phase 10, Sector 64, Mohali, 160062, India
| | - Atikur Rahman
- Institute of Nano Science and Technology, Habitat Centre, Phase 10, Sector 64, Mohali, 160062, India
| | - Tanmay Goswami
- Institute of Nano Science and Technology, Habitat Centre, Phase 10, Sector 64, Mohali, 160062, India
| | - Hirendra N Ghosh
- Institute of Nano Science and Technology, Habitat Centre, Phase 10, Sector 64, Mohali, 160062, India.,Radiation and Photochemistry Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Prakash P Neelakandan
- Institute of Nano Science and Technology, Habitat Centre, Phase 10, Sector 64, Mohali, 160062, India
| |
Collapse
|
11
|
Pérez R, Cong M, Vaughan SR, Ayala CE, Galpothdeniya WIS, Mathaga JK, Warner IM. Protein Discrimination Using a Fluorescence-Based Sensor Array of Thiacarbocyanine-GUMBOS. ACS Sens 2020; 5:2422-2429. [PMID: 32686397 PMCID: PMC7460578 DOI: 10.1021/acssensors.0c00484] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 07/20/2020] [Indexed: 12/17/2022]
Abstract
Sensitive and selective detection of proteins from complex samples has gained substantial interest within the scientific community. Early and precise detection of key proteins plays an important role in potential clinical diagnosis, treatment of different diseases, and proteomic research. In the study reported here, six different compounds belonging to a group of uniform materials based on organic salts (GUMBOS) have been synthesized using three thiacarbocyanine (TC) dyes and employed as fluorescent sensors. Fluorescence properties of micro- and nanoaggregates of these TC-based GUMBOS formed in phosphate buffer solutions are studied in the absence and presence of seven proteins. Fluorescence response patterns of these TC-based GUMBOS were analyzed by linear discriminant analysis (LDA). The constructed LDA model allowed discrimination of these seven proteins at various concentrations with 100% accuracy. The sensing and discrimination abilities of these TC-based GUMBOS were further evaluated in mixtures of two major proteins, i.e., human serum albumin and hemoglobin. Fluorescence response patterns of these mixtures were analyzed by LDA. This model allowed discrimination of various mixtures with 100% accuracy. Moreover, spiked urine samples were prepared and the responses of these sensors were collected and analyzed by LDA. Remarkably, discrimination of these seven proteins was also achieved with 100% accuracy.
Collapse
Affiliation(s)
- Rocío
L. Pérez
- Chemistry Department, Louisiana State University, Baton Rouge, Lousiana 70803, United States
| | - Mingyan Cong
- Chemistry Department, Louisiana State University, Baton Rouge, Lousiana 70803, United States
| | - Stephanie R. Vaughan
- Chemistry Department, Louisiana State University, Baton Rouge, Lousiana 70803, United States
| | - Caitlan E. Ayala
- Chemistry Department, Louisiana State University, Baton Rouge, Lousiana 70803, United States
| | | | - John K. Mathaga
- Chemistry Department, Louisiana State University, Baton Rouge, Lousiana 70803, United States
| | - Isiah M. Warner
- Chemistry Department, Louisiana State University, Baton Rouge, Lousiana 70803, United States
| |
Collapse
|
12
|
Qurrat-ul-Ain QUA, Khurshid S, Gul Z, Khatoon J, Shah MR, Hamid I, Khan IAT, Aslam F. Anionic azo dyes removal from water using amine-functionalized cobalt–iron oxide nanoparticles: a comparative time-dependent study and structural optimization towards the removal mechanism. RSC Adv 2020; 10:1021-1041. [PMID: 35494463 PMCID: PMC9048384 DOI: 10.1039/c9ra07686g] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Accepted: 12/02/2019] [Indexed: 01/09/2023] Open
Abstract
Efficient and selective removal of azo dyes from water by amine-functionalized-CoFe2O4 nanoparticles reliant on structural features such as size, charge, hydrophobicity/hydrophilicity, and S/C atoms.
Collapse
Affiliation(s)
| | - Sumaira Khurshid
- Department of Chemistry
- Federal Urdu University of Arts, Science and Technology
- Gulshan-e-Iqbal Campus
- Karachi-75300
- Pakistan
| | - Zarnab Gul
- Department of Chemistry
- University of Karachi
- Karachi-75270
- Pakistan
| | - Jaweria Khatoon
- Department of Chemistry
- Federal Urdu University of Arts, Science and Technology
- Gulshan-e-Iqbal Campus
- Karachi-75300
- Pakistan
| | - Muhammad Raza Shah
- H. E. J. Research Institute of Chemistry
- ICCBS
- University of Karachi
- Karachi 75270
- Pakistan
| | - Irum Hamid
- Department of Chemistry
- University of Karachi
- Karachi-75270
- Pakistan
| | - Iffat Abdul Tawab Khan
- Department of Chemistry
- Federal Urdu University of Arts, Science and Technology
- Gulshan-e-Iqbal Campus
- Karachi-75300
- Pakistan
| | - Fariha Aslam
- H. E. J. Research Institute of Chemistry
- ICCBS
- University of Karachi
- Karachi 75270
- Pakistan
| |
Collapse
|
13
|
Bhaduri B, Polubesova T, Chefetz B. Interactions of organic dye with Ag- and Ce-nano-assemblies: Influence of dissolved organic matter. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.06.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
14
|
Olenin AY. Chemically Modified Silver and Gold Nanoparticles in Spectrometric Analysis. JOURNAL OF ANALYTICAL CHEMISTRY 2019. [DOI: 10.1134/s1061934819040099] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|
15
|
Wang L, Huang Z, Wang R, Liu Y, Qian C, Wu J, Liu J. Transition Metal Dichalcogenide Nanosheets for Visual Monitoring PCR Rivaling a Real-Time PCR Instrument. ACS APPLIED MATERIALS & INTERFACES 2018; 10:4409-4418. [PMID: 29327589 DOI: 10.1021/acsami.7b15746] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Monitoring the progress of polymerase chain reactions (PCRs) is of critical importance in bioanalytical chemistry and molecular biology. Although real-time PCR thermocyclers are ideal for this purpose, their high cost has limited their applications in resource-poor areas. Direct visual detection would be a more attractive alternative. To monitor the PCR amplification, DNA-staining dyes, such as SYBR Green I (SG), are often used. Although these dyes give higher fluorescence when binding to double-stranded DNA products, they also yield strong background fluorescence in the presence of a high concentration of single-stranded (ss) DNA primers. In this work, we screened various nanomaterials and found that graphene oxide (GO), reduced GO, molybdenum disulfide (MoS2), and tungsten disulfide (WS2) can quench the fluorescence of nonamplified negative samples while still retaining strong fluorescence of positive ones. The signal ratio of positive-over-negative samples was enhanced by around 50-fold in the presence of these materials. In particular, MoS2 and WS2 nearly fully retained the fluorescence of the positive samples. The mechanism for MoS2 and WS2 to enhance PCR signaling is attributed to the adsorption of both the ssDNA PCR primers and SG with an appropriate strength. MoS2 can also suppress nonspecific amplification caused by excess polymerase. Finally, this method was used to detect extracted transgenic soya GTS 40-3-2 DNA after PCR amplification. Compared with the samples without nanomaterials, the addition of MoS2 could better distinguish the concentration difference of the template DNA, and the sensitivity of visual detection rivaled that from a real-time PCR instrument.
Collapse
Affiliation(s)
- Liu Wang
- College of Biosystems Engineering and Food Science, Zhejiang University , Hangzhou 310058, China
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo , Waterloo N2L 3G1, Ontario, Canada
| | - Zhicheng Huang
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo , Waterloo N2L 3G1, Ontario, Canada
| | - Rui Wang
- College of Biosystems Engineering and Food Science, Zhejiang University , Hangzhou 310058, China
| | - Yibo Liu
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo , Waterloo N2L 3G1, Ontario, Canada
| | - Cheng Qian
- College of Biosystems Engineering and Food Science, Zhejiang University , Hangzhou 310058, China
| | - Jian Wu
- College of Biosystems Engineering and Food Science, Zhejiang University , Hangzhou 310058, China
| | - Juewen Liu
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo , Waterloo N2L 3G1, Ontario, Canada
| |
Collapse
|
16
|
Walters CM, Pao C, Gagnon BP, Zamecnik CR, Walker GC. Bright Surface-Enhanced Raman Scattering with Fluorescence Quenching from Silica Encapsulated J-Aggregate Coated Gold Nanoparticles. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:1705381. [PMID: 29266419 DOI: 10.1002/adma.201705381] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Indexed: 06/07/2023]
Abstract
Plexitonic nanoparticles offer variable optical properties through tunable excitations, in addition to electric field enhancements that far exceed molecular resonators. This study demonstrates a way to design an ultrabright surface-enhanced Raman spectroscopy (SERS) signal while simultaneously quenching the fluorescence background through silica encapsulation of the semiconductor-metal composite nanoparticles. Using a multistep approach, a J-aggregate-forming organic dye is assembled on the surface of gold nanoparticles using a cationic linker. Excitonic resonance of the J-aggregate-metal system shows an enhanced SERS signal at an appropriate excitation wavelength. Further encapsulation of the decorated particles in silica shows a significant reduction in the fluorescence signal of the Raman spectra (5× reduction) and an increase in Raman scattering (7× enhancement) when compared to phospholipid encapsulation. This reduction in fluorescence is important for maximizing the useful SERS enhancement from the particle, which shows a signal increase on the order of 104 times greater than J-aggregated dye in solution and 24 times greater than Oxonica S421 SERS tag. The silica layer also serves to promote colloidal stability. The combination of reduced fluorescence background, enhanced SERS intensity, and temporal stability makes these particles highly distinguishable with potential to enable high-throughput applications such as SERS flow cytometry.
Collapse
Affiliation(s)
| | - Caroline Pao
- Department of Chemistry, University of Toronto, Toronto, Ontario, M5S3H6, Canada
| | - Brandon P Gagnon
- Department of Chemistry, University of Toronto, Toronto, Ontario, M5S3H6, Canada
| | - Colin R Zamecnik
- Department of Chemistry, University of Toronto, Toronto, Ontario, M5S3H6, Canada
| | - Gilbert C Walker
- Department of Chemistry, University of Toronto, Toronto, Ontario, M5S3H6, Canada
| |
Collapse
|
17
|
Delgado-Gonzalez A, Garcia-Fernandez E, Valero T, Cano-Cortes MV, Ruedas-Rama MJ, Unciti-Broceta A, Sanchez-Martin RM, Diaz-Mochon JJ, Orte A. Metallofluorescent Nanoparticles for Multimodal Applications. ACS OMEGA 2018; 3:144-153. [PMID: 30023770 PMCID: PMC6044963 DOI: 10.1021/acsomega.7b01984] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 12/25/2017] [Indexed: 06/08/2023]
Abstract
Herein, we describe the synthesis and application of cross-linked polystyrene-based dual-function nano- and microparticles containing both fluorescent tags and metals. Despite containing a single dye, these particles exhibit a characteristic dual-band fluorescence emission. Moreover, these particles can be combined with different metal ions to obtain hybrid metallofluorescent particles. We demonstrate that these particles are easily nanofected into living cells, allowing them to be used for effective fingerprinting in multimodal fluorescence-based and mass spectrometry-based flow cytometry experiments. Likewise, the in situ reductions of the metal ions enable other potential uses of the particles as heterogeneous catalysts.
Collapse
Affiliation(s)
- Antonio Delgado-Gonzalez
- Department
of Medicinal and Organic Chemistry, Faculty of Pharmacy, and Department of
Physical Chemistry, Faculty of Pharmacy, University of Granada, Campus Cartuja, 18071 Granada, Spain
- GENYO, Pfizer-University of
Granada-Junta de Andalucía
Centre for Genomics and Oncological Research, Avda. Ilustracion 114. PTS, 18016 Granada, Spain
| | - Emilio Garcia-Fernandez
- Department
of Medicinal and Organic Chemistry, Faculty of Pharmacy, and Department of
Physical Chemistry, Faculty of Pharmacy, University of Granada, Campus Cartuja, 18071 Granada, Spain
| | - Teresa Valero
- Department
of Medicinal and Organic Chemistry, Faculty of Pharmacy, and Department of
Physical Chemistry, Faculty of Pharmacy, University of Granada, Campus Cartuja, 18071 Granada, Spain
- GENYO, Pfizer-University of
Granada-Junta de Andalucía
Centre for Genomics and Oncological Research, Avda. Ilustracion 114. PTS, 18016 Granada, Spain
| | - M. Victoria Cano-Cortes
- GENYO, Pfizer-University of
Granada-Junta de Andalucía
Centre for Genomics and Oncological Research, Avda. Ilustracion 114. PTS, 18016 Granada, Spain
| | - Maria J. Ruedas-Rama
- Department
of Medicinal and Organic Chemistry, Faculty of Pharmacy, and Department of
Physical Chemistry, Faculty of Pharmacy, University of Granada, Campus Cartuja, 18071 Granada, Spain
| | - Asier Unciti-Broceta
- Cancer
Research UK Edinburgh Centre, Institute of Genetics and Molecular
Medicine, The University of Edinburgh, Crewe Road South, Edinburgh EH4 2XR, U.K.
| | - Rosario M. Sanchez-Martin
- Department
of Medicinal and Organic Chemistry, Faculty of Pharmacy, and Department of
Physical Chemistry, Faculty of Pharmacy, University of Granada, Campus Cartuja, 18071 Granada, Spain
- GENYO, Pfizer-University of
Granada-Junta de Andalucía
Centre for Genomics and Oncological Research, Avda. Ilustracion 114. PTS, 18016 Granada, Spain
| | - Juan J. Diaz-Mochon
- Department
of Medicinal and Organic Chemistry, Faculty of Pharmacy, and Department of
Physical Chemistry, Faculty of Pharmacy, University of Granada, Campus Cartuja, 18071 Granada, Spain
- GENYO, Pfizer-University of
Granada-Junta de Andalucía
Centre for Genomics and Oncological Research, Avda. Ilustracion 114. PTS, 18016 Granada, Spain
| | - Angel Orte
- Department
of Medicinal and Organic Chemistry, Faculty of Pharmacy, and Department of
Physical Chemistry, Faculty of Pharmacy, University of Granada, Campus Cartuja, 18071 Granada, Spain
| |
Collapse
|
18
|
Thomas R, Thomas A, Pullanchery S, Joseph L, Somasundaran SM, Swathi RS, Gray SK, Thomas KG. Plexcitons: The Role of Oscillator Strengths and Spectral Widths in Determining Strong Coupling. ACS NANO 2018; 12:402-415. [PMID: 29261287 DOI: 10.1021/acsnano.7b06589] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Strong coupling interactions between plasmon and exciton-based excitations have been proposed to be useful in the design of optoelectronic systems. However, the role of various optical parameters dictating the plasmon-exciton (plexciton) interactions is less understood. Herein, we propose an inequality for achieving strong coupling between plasmons and excitons through appropriate variation of their oscillator strengths and spectral widths. These aspects are found to be consistent with experiments on two sets of free-standing plexcitonic systems obtained by (i) linking fluorescein isothiocyanate on Ag nanoparticles of varying sizes through silane coupling and (ii) electrostatic binding of cyanine dyes on polystyrenesulfonate-coated Au nanorods of varying aspect ratios. Being covalently linked on Ag nanoparticles, fluorescein isothiocyanate remains in monomeric state, and its high oscillator strength and narrow spectral width enable us to approach the strong coupling limit. In contrast, in the presence of polystyrenesulfonate, monomeric forms of cyanine dyes exist in equilibrium with their aggregates: Coupling is not observed for monomers and H-aggregates whose optical parameters are unfavorable. The large aggregation number, narrow spectral width, and extremely high oscillator strength of J-aggregates of cyanines permit effective delocalization of excitons along the linear assembly of chromophores, which in turn leads to efficient coupling with the plasmons. Further, the results obtained from experiments and theoretical models are jointly employed to describe the plexcitonic states, estimate the coupling strengths, and rationalize the dispersion curves. The experimental results and the theoretical analysis presented here portray a way forward to the rational design of plexcitonic systems attaining the strong coupling limits.
Collapse
Affiliation(s)
- Reshmi Thomas
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM) , Vithura, Thiruvananthapuram 695551, India
| | - Anoop Thomas
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM) , Vithura, Thiruvananthapuram 695551, India
| | - Saranya Pullanchery
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM) , Vithura, Thiruvananthapuram 695551, India
| | - Linta Joseph
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM) , Vithura, Thiruvananthapuram 695551, India
| | - Sanoop Mambully Somasundaran
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM) , Vithura, Thiruvananthapuram 695551, India
| | - Rotti Srinivasamurthy Swathi
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM) , Vithura, Thiruvananthapuram 695551, India
| | - Stephen K Gray
- Center for Nanoscale Materials, Argonne National Laboratory , Argonne, Illinois 60439, United States
| | - K George Thomas
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM) , Vithura, Thiruvananthapuram 695551, India
| |
Collapse
|
19
|
Bricks JL, Slominskii YL, Panas ID, Demchenko AP. Fluorescent J-aggregates of cyanine dyes: basic research and applications review. Methods Appl Fluoresc 2017; 6:012001. [DOI: 10.1088/2050-6120/aa8d0d] [Citation(s) in RCA: 182] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
20
|
Lao YH, Chi CW, Friedrich SM, Peck K, Wang TH, Leong KW, Chen LC. Signal-on Protein Detection via Dye Translocation between Aptamer and Quantum Dot. ACS APPLIED MATERIALS & INTERFACES 2016; 8:12048-12055. [PMID: 27101438 DOI: 10.1021/acsami.6b02871] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A unique interaction between the cyanine dye and negatively charged quantum dot is used to construct a signal-on biaptameric quantum dot (QD) Förster resonance energy transfer (FRET) beacon for protein detection and distinct aptamer characterization. The beacon comprises a pair of aptamers, one intercalated with the cyanine dye (YOYO-3) and the other conjugated to a negatively charged, carboxyl-QD. When the target protein is present, structural folding and sandwich association of the two aptamers take place. As a consequence, YOYO-3 is displaced from the folded aptamer and transferred to the unblocked QD surface to yield a target concentration-dependent FRET signal. As a proof-of-principle, we demonstrate the detection of thrombin ranging from nanomolar to submicromolar concentrations and confirm the dye translocation using cylindrical illumination confocal spectroscopy (CICS). The proposed beacon provides a simple, rapid, signal-on FRET detection for protein as well as a potential platform for distinct aptamer screening.
Collapse
Affiliation(s)
- Yeh-Hsing Lao
- Department of Biomedical Engineering, Columbia University , New York, New York 10027, United States
| | - Chun-Wei Chi
- Department of Bio-Industrial Mechatronics Engineering, National Taiwan University , Taipei 10617, Taiwan
| | | | - Konan Peck
- Institute of Biomedical Sciences, Academia Sinica , Taipei 11529, Taiwan
| | | | - Kam W Leong
- Department of Biomedical Engineering, Columbia University , New York, New York 10027, United States
| | - Lin-Chi Chen
- Department of Bio-Industrial Mechatronics Engineering, National Taiwan University , Taipei 10617, Taiwan
| |
Collapse
|
21
|
Seo S, Kwon MS, Phillips AW, Seo D, Kim J. Highly sensitive turn-on biosensors by regulating fluorescent dye assembly on liposome surfaces. Chem Commun (Camb) 2016; 51:10229-32. [PMID: 26022090 DOI: 10.1039/c5cc01621e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
We developed a new self-signaling sensory system built on phospholipid liposomes having H-aggregated R6G dyes on their surface. Selective molecular recognition of a target by the phospholipid displaces R6G from the liposome surface to turn on fluorescence signal. Selective and sensitive detection of neomycin down to 2.3 nM is demonstrated.
Collapse
Affiliation(s)
- Sungbaek Seo
- Macromolecular Sci. and Eng., University of Michigan, USA
| | | | | | | | | |
Collapse
|
22
|
Akshath US, Bhatt P. Gold nanoparticle synthesis coupled to fluorescence turn-on for sensitive detection of formaldehyde using formaldehyde dehydrogenase. RSC Adv 2016. [DOI: 10.1039/c6ra12222a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Ultrasensitive detection of formaldehyde by coupling enzyme activity with GNP synthesis.
Collapse
Affiliation(s)
- Uchangi Satyaprasad Akshath
- Academy of Scientific and Innovative Research (AcSIR)
- CSIR-Central Food Technological Research Institute (CFTRI)
- Mysore-570020
- India
- Microbiology & Fermentation Technology Department
| | - Praveena Bhatt
- Academy of Scientific and Innovative Research (AcSIR)
- CSIR-Central Food Technological Research Institute (CFTRI)
- Mysore-570020
- India
- Microbiology & Fermentation Technology Department
| |
Collapse
|
23
|
Molecular Reorganization Energy as a Key Determinant of J-Band Formation in J-Aggregates of Polymethine Dyes. J Phys Chem A 2015; 119:6773-80. [DOI: 10.1021/acs.jpca.5b01269] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
24
|
Sadegh H, Shahryari-ghoshekandi R, Agarwal S, Tyagi I, Asif M, Gupta VK. Microwave-assisted removal of malachite green by carboxylate functionalized multi-walled carbon nanotubes: Kinetics and equilibrium study. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.02.007] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
25
|
Wang S, Sun J, Gao F. A turn-on near-infrared fluorescent chemosensor for selective detection of lead ions based on a fluorophore-gold nanoparticle assembly. Analyst 2015; 140:4001-6. [PMID: 25919909 DOI: 10.1039/c5an00320b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A turn-on fluorescent chemosensor of Pb(2+) in the near-infrared (NIR) region, which is based on the Pb(2+)-tuned restored fluorescence of a weakly fluorescent fluorophore-gold nanoparticle (AuNPs) assembly, has been reported. In this fluorophore-AuNP assembly, NIR fluorescent dye brilliant cresyl blue (BCB) molecules act as fluorophores and are used for signal transduction of fluorescence, while AuNPs act as quenchers to quench the nearby fluorescent BCB molecules via electron transfer. In the presence of Pb(2+), fluorescent BCB molecules detached from AuNPs and restored their fluorescence due to the formation of a chelating complex between Pb(2+) and glutathione confined on AuNPs. Under the optimal conditions, the present BCB-AuNP assembly is capable of detecting Pb(2+) with a concentration ranging from 7.5 × 10(-10) to 1 × 10(-8) mol L(-1) (0.16-2.1 ng mL(-1)) and a detection limit of 0.51 nM (0.11 ng mL(-1)). The present BCB-AuNP assembly can be used in aqueous media for the determination of Pb(2+) unlike common organic fluorescent reagents, and also shows advantages of NIR fluorescence spectrophotometry such as less interference, lower detection limit, and higher sensitivity. Moreover, the present method was successfully applied for the detection of Pb(2+) in water samples with satisfactory results.
Collapse
Affiliation(s)
- Shaozhen Wang
- Department of Pharmacy, Wannan Medical College, Wuhu 241002, P. R. China.
| | | | | |
Collapse
|
26
|
Puntes VF, Comenge J. The Role of PEG Conformation in Mixed Layers: From Protein Corona Substrate to Steric Stabilization Avoiding Protein Adsorption. SCIENCEOPEN RESEARCH 2015. [DOI: 10.14293/s2199-1006.1.sor-matsci.a0z6om.v1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
<p>Although nanoparticles have been traditionally modified with a single ligand layer, mixture of ligands might help to combine different functionalities and to further engineer the NP surface. A detailed study of the competition between an alkanethiol (11-mercaptoundecanoic acid) and SH-PEG for the surface of AuNPs and the resultant behaviors of this model nanoconjugate is presented here. As a result, the physicochemical properties of these conjugates can be progressively tuned by controlling the composition and especially the conformation of the mixed monolayer. This has implications in the physiological stability. The controlled changes on the SH-PEG conformation rather than its concentration induces a change in the stabilization mechanism from electrostatic repulsion to steric hindrance, which changes the biological fate of NPs. Importantly, the adsorption of proteins on the conjugates can be tailored by tuning the composition and conformation of the mixed layer.</p>
Collapse
|
27
|
Grygorova G, Klochkov V, Yefimova S, Malyukin Y. Effects of orthovanadate-based nanoparticles of various sizes on the aggregation behavior of polymethine dyes in aqueous solutions. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2014.12.051] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
28
|
Cheng HW, Skeete Z, Ngo QM, Luo J, Zhong CJ. Harnessing the interparticle J-aggregate induced plasmonic coupling for surface-enhanced Raman scattering. Phys Chem Chem Phys 2015; 17:28529-33. [DOI: 10.1039/c5cp04920b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The kinetic linkage between surface plasmon resonance absorption and surface-enhanced Raman scattering data highlights an effective pathway for harnessing the plasmonic coupling of gold nanoparticlesviaJ-aggregation in solutions.
Collapse
Affiliation(s)
- Han-Wen Cheng
- School of Chemical and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai 201418
- China
- Department of Chemistry
| | - Zakiya Skeete
- Department of Chemistry
- State University of New York at Binghamton
- Binghamton
- USA
| | - Quang Minh Ngo
- Department of Chemistry
- State University of New York at Binghamton
- Binghamton
- USA
| | - Jin Luo
- Department of Chemistry
- State University of New York at Binghamton
- Binghamton
- USA
| | - Chuan-Jian Zhong
- Department of Chemistry
- State University of New York at Binghamton
- Binghamton
- USA
| |
Collapse
|
29
|
Sun Z, Wang J, Wei H, Wang G, Jian Y, Luo S, Zhou Z. Spectroscopic Investigation of a Synthetic Cyanine Amine Derivative upon Various Scaffolds. ANAL LETT 2014. [DOI: 10.1080/00032719.2014.919505] [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]
|
30
|
Lien CW, Tseng YT, Huang CC, Chang HT. Logic control of enzyme-like gold nanoparticles for selective detection of lead and mercury ions. Anal Chem 2014; 86:2065-72. [PMID: 24451013 DOI: 10.1021/ac4036789] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Functional logic gates based on lead ions (Pb(2+)) and mercury ions (Hg(2+)) that induce peroxidase-like activities in gold nanoparticles (Au NPs) in the presence of platinum (Pt(4+)) and bismuth ions (Bi(3+)) are presented. The "AND" logic gate is constructed using Pt(4+)/Pb(2+) as the input and the peroxidase-like activity of the Au NPs as the output; this logic gate is denoted as "Pt(4+)/Pb(2+)(AND)-Au NPPOX". When Pt(4+) and Pb(2+) coexist, strong metallophilic interactions (between Pt and Pb atoms/ions) and aurophilic interactions (between Au and Pb/Pt atoms/ions) result in significant increases in the deposition of Pt and Pb atoms/ions onto the Au NPs, leading to enhanced peroxidase-like activity. The "INHIBIT" logic gate is fabricated by using Bi(3+) and Hg(2+) as the input and the peroxidase-like activity of the Au NPs as the output; this logic gate is denoted as "Bi(3+)/Hg(2+)(INHIBIT)-Au NPPOX". High peroxidase-like activity of Au NPs in the presence of Bi(3+) is a result of the various valence (oxidation) states of Bi(3+) and Au (Au(+)/Au(0)) atoms on the nanoparticle's surface. When Bi(3+) and Hg(2+) coexist, strong Hg-Au amalgamation results in a large decrease in the peroxidase-like activity of the Au NPs. These two probes (Pt(4+)/Pb(2+)(AND)-Au NPPOX and Bi(3+)/Hg(2+)(INHIBIT)-Au NPPOX) allow selective detection of Pb(2+) and Hg(2+) down to nanomolar quantities. The practicality of these two probes has been validated by analysis of Pb(2+) and Hg(2+) in environmental water samples (tap water, river water, and lake water). In addition, an integrated logic circuit based on the color change (formation of reddish resorufin product) and generation of O2 bubbles from these two probes has been constructed, allowing visual detection of Pb(2+) and Hg(2+) in aqueous solution.
Collapse
Affiliation(s)
- Chia-Wen Lien
- Department of Chemistry, National Taiwan University , Taipei, 10617, Taiwan
| | | | | | | |
Collapse
|
31
|
Nagasawa F, Takase M, Murakoshi K. Raman Enhancement via Polariton States Produced by Strong Coupling between a Localized Surface Plasmon and Dye Excitons at Metal Nanogaps. J Phys Chem Lett 2014; 5:14-19. [PMID: 26276174 DOI: 10.1021/jz402243a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Polarized Raman scattering measurement was carried out using a hybridized system of Ag nanodimer structures and organic dye molecules. Tuning of the localized surface plasmon resonance energy leads to modulation of the hybridized polariton energy. The anticrossing behavior of the polariton energy implies a strong coupling regime with maximum Rabi splitting energy of 0.39 eV. The observation proves the effective Raman enhancement via the excitation of the upper and the lower branches of the hybridized states at the gap of the metal dimer. Maximum Raman enhancement was obtained at an optimized resonant energy between the hybrid states and Raman excitation.
Collapse
Affiliation(s)
- Fumika Nagasawa
- Department of Chemistry, Faculty of Science, Hokkaido University, North 10 West 8, Kita-ku, Sapporo, Hokkaido 060-0810, Japan
| | - Mai Takase
- Department of Chemistry, Faculty of Science, Hokkaido University, North 10 West 8, Kita-ku, Sapporo, Hokkaido 060-0810, Japan
| | - Kei Murakoshi
- Department of Chemistry, Faculty of Science, Hokkaido University, North 10 West 8, Kita-ku, Sapporo, Hokkaido 060-0810, Japan
| |
Collapse
|
32
|
Selva Sharma A, Ilanchelian M. Elucidation of photophysical changes and orientation of acridine orange dye on the surface of borate capped gold nanoparticles using multi-spectroscopic techniques. Photochem Photobiol Sci 2014; 13:1741-52. [DOI: 10.1039/c4pp00223g] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In the present work, we have carried out a detailed investigation on the binding interaction of acridine orange (AO) with borate capped gold nanoparticles (Au NPs) by multi spectroscopic techniques.
Collapse
|
33
|
Vasimalai N, Prabhakarn A, John SA. A turn-on highly selective and ultrasensitive determination of copper (II) in an aqueous medium using folic acid capped gold nanoparticles as the probe. NANOTECHNOLOGY 2013; 24:505503. [PMID: 24284553 DOI: 10.1088/0957-4484/24/50/505503] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
This paper describes a 'turn-on' fluorescent determination of Cu(II) in an aqueous medium using folic acid capped gold nanoparticles (FA-AuNPs) as the probe. The FA-AuNPs were synthesized by the wet chemical method and were characterized by UV-visible, fluorescence, HR-TEM, XRD, zeta potential, and DLS techniques. The FA-AuNPs show an absorption maximum at 510 nm and an emission maximum at 780 nm (λ(ex): 510 nm). On adding 10 μM Cu(II), the wine-red color of FA-AuNPs changed to purple and the absorbance at 510 nm decreased. The observed changes were ascribed to the aggregation of AuNPs. This was confirmed by DLS and HR-TEM studies. Interestingly, the emission intensity of FA-AuNPs was enhanced even in the presence of a picomolar concentration of Cu(II). Based on the enhancement of the emission intensity, the concentration of Cu(II) was determined. The FA-AuNPs showed an extreme selectivity towards the determination of 10 nM Cu(II) in the presence of 10,000-fold higher concentration of interferences except EDTA and the carboxylate anion. A good linearity was observed from 10 × 10(-9) to 1 × 10(-12) M Cu(II), and the detection limit was found to be 50 fM l(-1) (S/N = 3). The proposed method was successfully applied to determine Cu(II) in real samples. The results obtained were validated with ICP-AES.
Collapse
Affiliation(s)
- N Vasimalai
- Centre for Nanoscience and Nanotechnology, Department of Chemistry, Gandhigram Rural Institute, Gandhigram-624 302, Dindigul, Tamilnadu, India
| | | | | |
Collapse
|
34
|
Laban BB, Vodnik V, Vujačić A, Sovilj SP, Jokić AB, Vasić V. Spectroscopic and fluorescence properties of silver-dye composite nanoparticles. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2013. [DOI: 10.1134/s0036024413130141] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
35
|
Dhital RN, Kamonsatikul C, Somsook E, Sato Y, Sakurai H. Aryl iodides as strong inhibitors in gold and gold-based bimetallic quasi-homogeneous catalysis. Chem Commun (Camb) 2013; 49:2542-4. [PMID: 23423533 DOI: 10.1039/c3cc39019e] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The strong inhibitor effect of aryl iodides on the quasi-homogenous gold-catalyzed oxidation reaction was described. Aryl iodides were adsorbed on the exposed surface of Au clusters, which affected the accessibility of the nanoclusters to the reacting species and acted as strong inhibitors in catalysis.
Collapse
|
36
|
Shi Y, Yi C, Zhang Z, Zhang H, Li M, Yang M, Jiang Q. Peptide-bridged assembly of hybrid nanomaterial and its application for caspase-3 detection. ACS APPLIED MATERIALS & INTERFACES 2013; 5:6494-6501. [PMID: 23806127 DOI: 10.1021/am401935y] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Recent developments in the rational design and the controlled assembly of nanoscale building blocks have resulted in functional devices such as nano-optoelectronics, novel contrast probes for molecular imaging, and nanosensors. In the present study, we designed and synthesized a hybrid nanomaterial consisting of [Ru(bpy)3](2+)-encapsulated silica nanoparticles (SiNPs) and gold nanoparticles (AuNPs) through peptide-bridged assembly in a controllable way. A peptide that contains recognition sequence DEVD specific for active caspase-3 cleavage was employed to bring SiNPs and AuNPs into close proximity through specific molecular recognition. A FRET system with SiNPs as energy donors and AuNPs as energy acceptors has been thus developed and applied for caspase-3 detection. A change in distance between the two building blocks resulted in a change in FRET efficiency, causing a ratiometric change in emission. Caspase-3 triggers the cleavage of the peptide links between the two nanoparticles and releases AuNPs from the nanohybrids, inducing the activation of SiNPs to the "ON" state. The fluorescence turn-on response is specific to caspase-3 and allows the detection of caspase-3 as low as 0.05 U mL(-1) (∼6 pM).
Collapse
Affiliation(s)
- Yupeng Shi
- Key Laboratory of Sensing Technology and Biomedical Instruments (Guangdong Province), School of Engineering, Sun Yat-Sen University, Guangzhou, China
| | | | | | | | | | | | | |
Collapse
|
37
|
Vujačić A, Vodnik V, Sovilj SP, Dramićanin M, Bibić N, Milonjić S, Vasić V. Adsorption and fluorescence quenching of 5,5′-disulfopropyl-3,3′-dichlorothiacyanine dye on gold nanoparticles. NEW J CHEM 2013. [DOI: 10.1039/c2nj40865a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
38
|
Comenge J, Puntes VF. Stabilizing gold nanoparticle bioconjugates in physiological conditions by PEGylation. Methods Mol Biol 2013; 1025:281-289. [PMID: 23918346 DOI: 10.1007/978-1-62703-462-3_22] [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: 06/02/2023]
Abstract
Stability of gold nanoparticles (AuNPs) is often compromised in physiological conditions. The loss of colloidal stability might lead to undesired biological responses for drug delivery nanosystems. Here a methodology to confer additional stability to the AuNPs by the addition of PEG is presented. Also, protocols to prepare and characterize the composition and conformation of mixed layers with PEG and alkanethiols are described here. Finally, methods to assay the stability of the link between the NP conjugates and a model drug are shown.
Collapse
Affiliation(s)
- Joan Comenge
- Catalan Institute of Nanotechnology, Universitat Autònoma de Barcelona, Barcelona, Spain
| | | |
Collapse
|
39
|
McLintock A, Lee HJ, Wark AW. Stabilized gold nanorod–dye conjugates with controlled resonance coupling create bright surface-enhanced resonance Raman nanotags. Phys Chem Chem Phys 2013; 15:18835-43. [DOI: 10.1039/c3cp52946k] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
|
40
|
Electronic transfer as a route to increase the chemical stability in gold and silver core-shell nanoparticles. Adv Colloid Interface Sci 2012; 185-186:14-33. [PMID: 22999044 DOI: 10.1016/j.cis.2012.08.007] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Accepted: 08/28/2012] [Indexed: 11/22/2022]
Abstract
This review article presents the collected recent findings and advancements in understanding and manipulating the electronic properties of the Au/Ag NP system from the standpoint of controlling the characteristics of heterostructured core-shell NPs. The discovery of the electronic transfer effect through analysis of both Ag-Au and Au-Ag type NPs inspired the analysis of the resulting enhanced properties. First, the background on the synthesis and characterization of Ag, Au, Ag-Au, Au-Ag and Au-Ag-Au NPs, which will be used as a basis for studying the electronic transfer and stability properties is presented. Next, Mie Theory is used to inspect the optical properties of the Ag-Au NPs, revealing subtle structural characteristics in these probes, which has implications to the plasmonic properties. This is followed by the inspection of the electronic properties of the Au-Ag NPs primarily through XPS and XANES analysis, revealing the origins of the electronic transfer phenomenon. The unique electronic properties are then revealed to result in improved particle stability in terms of susceptibility to oxidation. Finally, an assessment of the resulting enhanced plasmonic sensing properties is discussed. The results are presented in terms of synthesis technique, material characterization, understanding of the electronic properties and manipulation of those properties to create Au-Ag NPs with enhanced resistance to oxidation and galvanic replacement.
Collapse
|
41
|
Jordan AN, Das S, Siraj N, de Rooy SL, Li M, El-Zahab B, Chandler L, Baker GA, Warner IM. Anion-controlled morphologies and spectral features of cyanine-based nanoGUMBOS--an improved photosensitizer. NANOSCALE 2012; 4:5031-5038. [PMID: 22766774 DOI: 10.1039/c2nr30432e] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The ability to control the morphologies and spectral properties of organic low-dimensional nanomaterials is of paramount importance. The research reported herein demonstrates a template-free approach to tailored morphological and optical properties for a novel class of pseudoisocyanine (PIC)-based fluorescent organic nanoparticles derived from a group of uniform materials based on organic salts (GUMBOS). The synthesized nanoscale PIC-based particles (termed nanoGUMBOS), [PIC][NTf(2)] and [PIC][BETI], exhibit interesting adaptability as a function of the associated anion. The diamond-shaped nanostructures of [PIC][NTf(2)] and [PIC][BETI] nanorods exhibit enhanced fluorescence quantum yields relative to the parent compound, [PIC][I]. As supported by fluorescence lifetime measurements, these enhanced spectral properties can be attributed to differences in molecular self-assembly ordering (e.g., H- vs. J-aggregation) and restricted molecular rotation leading to reduced twisted intramolecular charge transfer in the nanoGUMBOS. The electrochemical properties of the PIC-based GUMBOS suggest their potential use in dye-sensitized solar cells.
Collapse
Affiliation(s)
- Atiya N Jordan
- Department of Chemistry, Louisiana State University, Baton Rouge, LA, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Achyuthan KE, Achyuthan AM, Brozik SM, Dirk SM, Lujan TR, Romero JM, Harper JC. Plasmonic fluorescent nanocomposites of cyanines self-assembled upon gold nanoparticle scaffolds. ANAL SCI 2012; 28:433-8. [PMID: 22687920 DOI: 10.2116/analsci.28.433] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Plasmonic fluorescent nanocomposites are difficult to prepare due to strong quenching effects on fluorophores in the vicinity of noble metal nanoparticles such as gold (AuNPs). We successfully prepared plasmonic fluorescent nanocomposites of two cyanines (1 and 2) aggregating upon 2 - 40 nm AuNPs or streptavidin-conjugated 10 nm AuNPs. We used high throughput screening (HTS) for the first time to characterize the spectral properties, aggregation kinetics, aggregation density and photostability of the nanocomposites. Fluorescence from nanocomposites declined inversely with AuNPs size: 40 nm ≥ 20 nm > 10 nm > 5 nm > 2 nm. Sensitivity (limit of detection, LOD, 10(5) - 10(11) AuNPs/mL), brightness of the nanocomposites and surface coverage of AuNPs by cyanine aggregates were all influenced by five factors: 1) AuNPs size; 2) cyanine type (1 or 2); 3) aggregate density; 4) distance between aggregates and AuNPs surface; and 5) streptavidin protein conjugation to AuNPs. We propose a model for plasmonic fluorescent nanocomposites based on these observations. Our plasmonic fluorescent nanocomposites have applications in chemical and biological assays.
Collapse
Affiliation(s)
- Komandoor E Achyuthan
- Biosensors and Nanomaterials Department, Sandia National Laboratories, Albuquerque, NM 87185, USA.
| | | | | | | | | | | | | |
Collapse
|
43
|
Gao F, Ye Q, Cui P, Zhang L. Efficient fluorescence energy transfer system between CdTe-doped silica nanoparticles and gold nanoparticles for turn-on fluorescence detection of melamine. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:4550-4558. [PMID: 22443279 DOI: 10.1021/jf300386y] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We here report an efficient and enhanced fluorescence energy transfer system between confined quantum dots (QDs) by entrapping CdTe into the mesoporous silica shell (CdTe@SiO₂) as donors and gold nanoparticles (AuNPs) as acceptors. At pH 6.50, the CdTe@SiO₂-AuNPs assemblies coalesce to form larger clusters due to charge neutralization, leading to the fluorescence quenching of CdTe@SiO₂ as a result of energy transfer. As compared with the energy transfer system between unconfined CdTe and AuNPs, the maximum fluorescence quenching efficiency of the proposed system is improved by about 27.0%, and the quenching constant, K(sv), is increased by about 2.4-fold. The enhanced quenching effect largely turns off the fluorescence of CdTe@SiO₂ and provides an optimal "off-state" for sensitive "turn-on" assay. In the present study, upon addition of melamine, the weak fluorescence system of CdTe@SiO₂-AuNPs is enhanced due to the strong interactions between the amino group of melamine and the gold nanoparticles via covalent bond, leading to the release of AuNPs from the surfaces of CdTe@SiO₂; thus, its fluorescence is restored. A "turn-on" fluorimetric method for the detection of melamine is proposed based on the restored fluorescence of the system. Under the optimal conditions, the fluorescence enhanced efficiency shows a linear function against the melamine concentrations ranging from 7.5 × 10⁻⁹ to 3.5 × 10⁻⁷ M (i.e., 1.0-44 ppb). The analytical sensitivity is improved by about 50%, and the detection limit is decreased by 5.0-fold, as compared with the analytical results using the CdTe-AuNPs system. Moreover, the proposed method was successfully applied to the determination of melamine in real samples with excellent recoveries in the range from 97.4 to 104.1%. Such a fluorescence energy transfer system between confined QDs and AuNPs may pave a new way for designing chemo/biosensing.
Collapse
Affiliation(s)
- Feng Gao
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, People's Republic of China.
| | | | | | | |
Collapse
|
44
|
Menéndez GO, Cortés E, Grumelli D, Méndez De Leo LP, Williams FJ, Tognalli NG, Fainstein A, Vela ME, Jares-Erijman EA, Salvarezza RC. Self-assembly of thiolated cyanine aggregates on Au(111) and Au nanoparticle surfaces. NANOSCALE 2012; 4:531-540. [PMID: 22127420 DOI: 10.1039/c1nr11039j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Heptamethinecyanine J-aggregates display sharp, intense fluorescence emission making them attractive candidates for developing a variety of chem-bio-sensing applications. They have been immobilized on planar thiol-covered Au surfaces and thiol-capped Au nanoparticles by weak molecular interactions. In this work the self-assembly of novel thiolated cyanine (CNN) on Au(111) and citrate-capped AuNPs from solutions containing monomers and J-aggregates has been studied by using STM, XPS, PM-IRRAS, electrochemical techniques and Raman spectroscopy. Data show that CNN species adsorb on the Au surfaces by forming thiolate-Au bonds. We found that the J-aggregates are preferentially adsorbed on the Au(111) surface directly from the solution while adsorbed CNN monomers cannot organize into aggregates on the substrate surface. These results indicate that the CNN-Au interaction is not able to disorganize the large J-aggregates stabilized by π-π stacking to optimize the S-Au binding site but it is strong enough to hinder the π-π stacking when CNNs are chemisorbed as monomers. The optical properties of the J-aggregates remain active after adsorption. The possibility of covalently bonding CNN J-aggregates to Au planar surfaces and Au nanoparticles controlling the J-aggregate/Au distance opens a new path regarding their improved stability and the wide range of biological applications of both CNN and AuNP biocompatible systems.
Collapse
Affiliation(s)
- Guillermo O Menéndez
- CHIDECAR, Departamento de Química Orgánica, FCEN, UBA, Ciudad Universitaria, Pabellón II, Buenos Aires, 1428, Argentina
| | | | | | | | | | | | | | | | | | | |
Collapse
|
45
|
Abad JM, Revenga-Parra M, García T, Gamero M, Lorenzo E, Pariente F. Interactions of Schiff-base ligands with gold nanoparticles: structural, optical and electrocatalytic studies. Phys Chem Chem Phys 2011; 13:5668-78. [PMID: 21311788 DOI: 10.1039/c0cp02164d] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A study on optical and electrochemical properties resulting upon interaction of Schiff base ligands with gold nanoparticles is presented. The measurements of the optical absorption and fluorescence properties have provided important information about structure-properties dependence. We show that in function of the isomer structure and its attachment orientation with respect to the metal nanoparticle, their optical properties can be modulated. Nanoparticle assemblies mediated by 3,4-DHS were also obtained based on a control of the interparticle interactions and their electrocatalytic activity toward NADH oxidation was investigated.
Collapse
Affiliation(s)
- Jose María Abad
- Departamento de Química Analítica y Análisis Instrumental, Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid, Spain.
| | | | | | | | | | | |
Collapse
|
46
|
Gao F, Cui P, Chen X, Ye Q, Li M, Wang L. A DNA hybridization detection based on fluorescence resonance energy transfer between dye-doped core-shell silica nanoparticles and gold nanoparticles. Analyst 2011; 136:3973-80. [DOI: 10.1039/c1an15287d] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
|
47
|
Features of light absorption of gold nanoparticles bound to the surface of silver by a bridge structure containing Zr(IV) ions. THEOR EXP CHEM+ 2010. [DOI: 10.1007/s11237-010-9157-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
48
|
Stobiecka M, Hepel M. Multimodal coupling of optical transitions and plasmonic oscillations in rhodamine B modified gold nanoparticles. Phys Chem Chem Phys 2010; 13:1131-9. [PMID: 21072434 DOI: 10.1039/c0cp00553c] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The optical properties of a photoluminescent dye rhodamine B (RhB) interacting with gold nanoparticles (AuNP) have been investigated using plasmonic absorbance, fluorescence, and resonance elastic light scattering (RELS) spectroscopy. We have found that these interactions result in a multimodal coupling that influence optical transitions in RhB. In absorbance measurements, we have observed for the first time the coupling resulting in strong screening of RhB π-π* transitions, likely caused by a contact adsorption of RhB on a conductive surface of AuNP. The nanoparticles quench also very efficiently the RhB fluorescence. We have determined that the static quenching mechanism with a non-Förster fluorescence resonance energy transfer (FRET) from RhB molecules to AuNP is involved. The Stern-Volmer dependence F(0)/F = f(Q) shows an upward deviation from linearity, attributed to the ultra-high quenching efficiency of AuNP leading to the new extended Stern-Volmer model. A sharp RELS peak of RhB alone (λ(max) = 566 nm) has been observed for the first time and attributed to the resonance fluorescence and enhanced scattering. This peak is completely quenched in the presence of AuNP(22nm). Our quantum mechanical calculations confirm that the distance between AuNP surface and conjugated π-electron system in RhB is well within the range of plasmonic fields extending from AuNP. The optical transition coupling to plasmonic oscillations and the efficient energy transfer due to the interactions of fluorescent dyes with nanoparticles are important for biophysical studies of life processes and applications in nanomedicine.
Collapse
Affiliation(s)
- Magdalena Stobiecka
- Department of Chemistry, State University of New York at Potsdam, Potsdam, NY 13676, USA
| | | |
Collapse
|
49
|
Stobiecka M, Coopersmith K, Hepel M. Resonance elastic light scattering (RELS) spectroscopy of fast non-Langmuirian ligand-exchange in glutathione-induced gold nanoparticle assembly. J Colloid Interface Sci 2010; 350:168-77. [DOI: 10.1016/j.jcis.2010.06.010] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2010] [Revised: 06/07/2010] [Accepted: 06/08/2010] [Indexed: 11/13/2022]
|
50
|
Cong H, Becker CF, Elliott SJ, Grinstaff MW, Porco JA. Silver nanoparticle-catalyzed Diels-Alder cycloadditions of 2'-hydroxychalcones. J Am Chem Soc 2010; 132:7514-8. [PMID: 20443601 DOI: 10.1021/ja102482b] [Citation(s) in RCA: 118] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Metal nanoparticles are currently being employed as catalysts for a number of classical chemical transformations. In contrast, identification of novel reactions of nanoparticles, especially toward the synthesis of complex natural products and derivatives, is highly underdeveloped and represents a bourgeoning area in chemical synthesis. Herein, we report silica-supported silver nanoparticles as solid, recyclable catalysts for Diels-Alder cycloadditions of 2'-hydroxychalcones and dienes in high yield and turnover number. The use of silver nanoparticle catalysts is further demonstrated by the total synthesis of the cytotoxic natural product panduratin A employing a highly electron-rich dienophile and Lewis acid sensitive diene.
Collapse
Affiliation(s)
- Huan Cong
- Department of Chemistry and Center for Chemical Methodology and Library Development, Boston University, Boston, Massachusetts 02215, USA
| | | | | | | | | |
Collapse
|