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Wamsley M, Zou S, Zhang D. Advancing Evidence-Based Data Interpretation in UV-Vis and Fluorescence Analysis for Nanomaterials: An Analytical Chemistry Perspective. Anal Chem 2023; 95:17426-17437. [PMID: 37972233 DOI: 10.1021/acs.analchem.3c03490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
UV-vis spectrophotometry and spectrofluorometry are indispensable tools in education, research, and industrial process controls with widespread applications in nanoscience encompassing diverse nanomaterials and fields. Nevertheless, the prevailing spectroscopic interpretations and analyses often exhibit ambiguity and errors, particularly evident in the nanoscience literature. This analytical chemistry Perspective focuses on fostering evidence-based data interpretation in experimental studies of materials' UV-vis absorption, scattering, and fluorescence properties. We begin by outlining common issues observed in UV-vis and fluorescence analysis. Subsequently, we provide a summary of recent advances in commercial UV-vis spectrophotometric and spectrofluorometric instruments, emphasizing their potential to enhance scientific rigor in UV-vis and fluorescence analysis. Furthermore, we propose potential avenues for future developments in spectroscopic instrumentation and measurement strategies, aiming to further augment the utility of optical spectroscopy in nano research for samples where optical complexity surpasses existing tools. Through a targeted focus on the critical issues related to UV-vis and fluorescence properties of nanomaterials, this Perspective can serve as a valuable resource for researchers, educators, and practitioners.
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Affiliation(s)
- Max Wamsley
- Department of Chemistry, Mississippi State University, Starkville, Mississippi 39762, United States
| | - Shengli Zou
- Department of Chemistry, University of Central Florida, Orlando, Florida 32816, United States
| | - Dongmao Zhang
- Department of Chemistry, Mississippi State University, Starkville, Mississippi 39762, United States
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2
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Gaeta M, Randazzo R, Costa C, Purrello R, D'Urso A. Enantiomeric Resolution and Enantiomer Isolation of H 2 TPPS4 J-Aggregate from Aqueous Solution Is Enabled by Vortexes. Chemistry 2023; 29:e202202337. [PMID: 36224099 DOI: 10.1002/chem.202202337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 10/11/2022] [Accepted: 10/12/2022] [Indexed: 12/14/2022]
Abstract
Protonated achiral H2 TPPS4 spontaneously self-arranges at acids pH and high ionic strength to build mesoscopic J-aggregates that are intrinsically chiral. According to the symmetry rule aggregation leads to a racemate that, however, can be unbalanced by chemical (chiral pollutants) or physical stimuli (as vortexing the solution). Vortexing the title racemate, in principle, might either induce chiral separation or chiral enrichment. Indeed, herein it is shown that vortices enable the resolution of this racemic solution exploiting the tendency to deposit, onto the quartz cuvette walls, of the enantiomer favored by the stirring sense. Simultaneously, over time, it was found that the opposite chiral conformation becomes prevalent in solution realizing a significant enantiomeric resolution. Therefore, after removing all stirring-favored chiral J-aggregate from the solution, the recovering and isolating of the desired enantiomers from the cuvette walls was successfully obtained without complex procedures. In this sense, it has been demonstrated that the stirring forces are executively able to fulfil the chiral separation in H2 TPPS4 J-aggregates, employed as model of a self-assembled system in aqueous solution.
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Affiliation(s)
- Massimiliano Gaeta
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale Andrea Doria, 6, 95125, Catania, Italy
| | - Rosalba Randazzo
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale Andrea Doria, 6, 95125, Catania, Italy
| | - Carlo Costa
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale Andrea Doria, 6, 95125, Catania, Italy
| | - Roberto Purrello
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale Andrea Doria, 6, 95125, Catania, Italy
| | - Alessandro D'Urso
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale Andrea Doria, 6, 95125, Catania, Italy
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3
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Nawalage S, Wathudura P, Wang A, Wamsley M, Zou S, Zhang D. Effects of Cascading Optical Processes: Part I: Impacts on Quantification of Sample Scattering Extinction, Intensity, and Depolarization. Anal Chem 2023; 95:1899-1907. [PMID: 36598877 DOI: 10.1021/acs.analchem.2c03917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Light scattering is a universal matter property that is especially prominent in nanoscale or larger materials. However, the effects of scattering-based cascading optical processes on experimental quantification of sample absorption, scattering, and emission intensities, as well as scattering and emission depolarization, have not been adequately addressed. Using a series of polystyrene nanoparticles (PSNPs) of different sizes as model analytes, we present a computational and experimental study on the effects of cascading light scattering on experimental quantification of NP scattering activities (scattering cross-section or molar coefficient), intensity, and depolarization. Part II and Part III of this series of companion articles explore the effects of cascading optical processes on sample absorption and fluorescence measurements, respectively. A general theoretical model is developed on how forward scattered light complicates the general applicability of Beer's law to the experimental UV-vis spectrum of scattering samples. The correlation between the scattering intensity and PSNP concentration is highly complicated with no robust linearity even when the scatterers' concentration is very low. Such complexity arises from the combination of concentration-dependence of light scattering depolarization and the scattering inner filter effects (IFEs). Scattering depolarization increases with the PSNP scattering extinction (thereby, its concentration) but can never reach unity (isotropic) due to the polarization dependence of the scattering IFE. The insights from this study are important for understanding the strengths and limitations of various scattering-based techniques for material characterization including nanoparticle quantification. They are also foundational for quantitative mechanistic understanding on the effects of light scattering on sample absorption and fluorescence measurements.
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Affiliation(s)
- Samadhi Nawalage
- Department of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Pathum Wathudura
- Department of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Ankai Wang
- Department of Chemistry, University of Central Florida, Orlando, Florida 32816, United States
| | - Max Wamsley
- Department of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Shengli Zou
- Department of Chemistry, University of Central Florida, Orlando, Florida 32816, United States
| | - Dongmao Zhang
- Department of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
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Stefanelli M, Magna G, Di Natale C, Paolesse R, Monti D. Stereospecific Self-Assembly Processes of Porphyrin-Proline Conjugates: From the Effect of Structural Features and Bulk Solvent Properties to the Application in Stereoselective Sensor Systems. Int J Mol Sci 2022; 23:15587. [PMID: 36555226 PMCID: PMC9779260 DOI: 10.3390/ijms232415587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/04/2022] [Accepted: 12/06/2022] [Indexed: 12/14/2022] Open
Abstract
Conjugating the porphyrin ring with an amino acid via amide linkage represents a straightforward way for conferring both amphiphilicity and chirality to the macrocycle. Proline residue is a good choice in this context since its conformational rigidity allows for porphyrin assembling where molecular chirality is efficiently transferred and amplified using properly honed aqueous environments. Herein, we describe the evolution of the studies carried out by our group to achieve chiral systems from some porphyrin-proline derivatives, both in solution and in the solid state. The discussion focuses on some fundamental aspects reflecting on the final molecular architectures obtained, which are related to the nature of the appended group (stereochemistry and charge), the presence of a metal ion coordinated to the porphyrin core and the bulk solvent properties. Indeed, fine-tuning the mentioned parameters enables the achievement of stereospecific structures with distinctive chiroptical and morphological features. Solid films based on these chiral systems were also obtained and their recognition abilities in gaseous and liquid phase are here described.
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Affiliation(s)
- Manuela Stefanelli
- Department of Chemical Science and Technologies, Università di Roma Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome, Italy
| | - Gabriele Magna
- Department of Chemical Science and Technologies, Università di Roma Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome, Italy
| | - Corrado Di Natale
- Department of Electronic Engineering, Università di Roma Tor Vergata, Viale del Politecnico 1, 00133 Rome, Italy
| | - Roberto Paolesse
- Department of Chemical Science and Technologies, Università di Roma Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome, Italy
| | - Donato Monti
- Department of Chemistry, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy
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Dar N, Ankari R. Theoretical Models, Preparation, Characterization and Applications of Cyanine J-Aggregates: A Minireview. Chemistry 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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 10/08/2022] [Indexed: 11/27/2022]
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.
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Affiliation(s)
- Nitzan Dar
- Department of PhysicsFaculty of Natural ScienceAriel UniversityAriel40700Israel
| | - Rinat Ankari
- Department of PhysicsFaculty of Natural ScienceAriel UniversityAriel40700Israel
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Kanzaki C, Yoneda H, Nomura S, Maeda T, Numata M. Ionic supramolecular polymerization of water-soluble porphyrins: balancing ionic attraction and steric repulsion to govern stacking. RSC Adv 2022; 12:30670-30681. [PMID: 36337941 PMCID: PMC9597584 DOI: 10.1039/d2ra05542b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Accepted: 10/10/2022] [Indexed: 11/06/2022] Open
Abstract
We have synthesized novel water-soluble anionic porphyrin monomers that undergo pH-regulated ionic supramolecular polymerization in aqueous media. By tuning the total charge of the monomer, we selectively produced two different supramolecular polymers: J- and H-stacked. The main driving force toward the J-aggregated supramolecular polymers was the ionic interactions between the sulfonate and protonated pyrrole groups, ultimately affording neutral supramolecular polymers. In these J-aggregated supramolecular polymers, amide groups were aligned regularly along polymer wedges, which further assembled in an edge-to-edge manner to afford nanosheets. In contrast, the H-aggregated supramolecular polymers remained anionic, with their amide NH moieties acting as anion receptors along the polymer chains, thereby minimizing repulsion. For both polymers, varying the steric bulk of the peripheral ethylene glycol (EG) units controlled the rates of self-assembly as well as the degrees of polymerization. This steric effect was further tunable, depending on the solvation state of the EG chains. Accordingly, this new family of supramolecular polymers was created by taking advantage of unique driving forces that depended on both the pH and solvent.
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Affiliation(s)
- Chisako Kanzaki
- Department of Biomolecular Chemistry, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University Shimogamo, Sakyo-ku Kyoto 606-8522 Japan +81-75-703-5132
| | - Hiroshi Yoneda
- Department of Biomolecular Chemistry, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University Shimogamo, Sakyo-ku Kyoto 606-8522 Japan +81-75-703-5132
| | - Shota Nomura
- Department of Biomolecular Chemistry, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University Shimogamo, Sakyo-ku Kyoto 606-8522 Japan +81-75-703-5132
| | - Takato Maeda
- Department of Biomolecular Chemistry, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University Shimogamo, Sakyo-ku Kyoto 606-8522 Japan +81-75-703-5132
| | - Munenori Numata
- Department of Biomolecular Chemistry, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University Shimogamo, Sakyo-ku Kyoto 606-8522 Japan +81-75-703-5132
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Gradova M, Gradov O, Bychkova A, Motyakin M, Ionova I, Lobanov A. Interaction between meso-tetra-(4-hydroxyphenyl)porphyrin and SDS in aqueous solutions: Premicellar porphyrin-surfactant J-aggregate formation. Chem Phys 2022. [DOI: 10.1016/j.chemphys.2022.111655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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8
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Detection of Alpha-Fetoprotein Using Aptamer-Based Sensors. BIOSENSORS 2022; 12:bios12100780. [PMID: 36290918 PMCID: PMC9599106 DOI: 10.3390/bios12100780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 09/12/2022] [Accepted: 09/18/2022] [Indexed: 11/16/2022]
Abstract
Alpha-fetoprotein (AFP) is widely-known as the most commonly used protein biomarker for liver cancer diagnosis at the early stage. Therefore, developing the highly sensitive and reliable method of AFP detection is of essential demand for practical applications. Herein, two types of aptamer-based AFP detection methods, i.e., optical and electrochemical biosensors, are reviewed in detail. The optical biosensors include Raman spectroscopy, dual-polarization interferometry, resonance light-scattering, fluorescence, and chemiluminescence. The electrochemical biosensors include cyclic voltammetry, electrochemical impedance spectroscopy, and giant magnetic impedance. Looking into the future, methods for AFP detection that are high sensitivity, long-term stability, low cost, and operation convenience will continue to be developed.
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Wamsley M, Wathudura P, Hu J, Zhang D. Integrating-Sphere-Assisted Resonance Synchronous Spectroscopy for the Quantification of Material Double-Beam UV-Vis Absorption and Scattering Extinction. Anal Chem 2022; 94:11610-11618. [PMID: 35960824 DOI: 10.1021/acs.analchem.2c02037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Integrating spheres (IS) have been used extensively for the characterization of light absorption in turbid samples. However, converting the IS-based sample absorption coefficient to the UV-vis absorbance quantified with a double-beam UV-vis spectrophotometer is challenging. Herein, we report an integrating-sphere-assisted resonance synchronous (ISARS) spectroscopy method performed with conventional spectrofluorometers equipped with an integrating-sphere accessory. Mathematical models and experimental procedures for quantifying the sample, solvent, and instrument-baseline ISARS intensity spectra were provided. A three-parameter analytical model has been developed for correlating the ISARS-based UV-vis absorbance and the absorbance measured with double-beam instruments. This ISARS method enables the quantitative separation of light absorption and scattering contribution to the sample UV-vis extinction spectrum measured with double-beam UV-vis spectrophotometers. Example applications of this ISARS technique are demonstrated with a series of representative samples differing significantly in their optical complexities, from approximately pure absorbers, pure scatterers, to simultaneous light absorbers, scatterers, and emitters under resonance excitation and detection conditions.
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Affiliation(s)
- Max Wamsley
- Department of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Pathum Wathudura
- Department of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Juan Hu
- Department of Mathematical Sciences, DePaul University, Chicago, Illinois 60604, United States
| | - Dongmao Zhang
- Department of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
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10
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Zhou H, Li M, Diao N, Wu S, Wang J, Wu P. A removing resonance fluorescence method for light scattering spectroscopy. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2021.139244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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11
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Biodirected Synthesis of Silver Nanoparticles Using Aqueous Honey Solutions and Evaluation of Their Antifungal Activity against Pathogenic Candida Spp. Int J Mol Sci 2021; 22:ijms22147715. [PMID: 34299335 PMCID: PMC8305289 DOI: 10.3390/ijms22147715] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 07/03/2021] [Accepted: 07/14/2021] [Indexed: 12/14/2022] Open
Abstract
Silver nanoparticles (AgNPs) were synthesized using aqueous honey solutions with a concentration of 2%, 10%, and 20%-AgNPs-H2, AgNPs-H10, and AgNPs-H20. The reaction was conducted at 35 °C and 70 °C. Additionally, nanoparticles obtained with the citrate method (AgNPs-C), while amphotericin B (AmB) and fluconazole were used as controls. The presence and physicochemical properties of AgNPs was affirmed by analyzing the sample with ultraviolet-visible (UV-Vis) and fluorescence spectroscopy, scanning electron microscopy (SEM), and dynamic light scattering (DLS). The 20% honey solution caused an inhibition of the synthesis of nanoparticles at 35 °C. The antifungal activity of the AgNPs was evaluated using opportunistic human fungal pathogens Candida albicans and Candida parapsilosis. The antifungal effect was determined by the minimum inhibitory concentration (MIC) and disc diffusion assay. The highest activity in the MIC tests was observed in the AgNPs-H2 variant. AgNPs-H10 and AgNPs-H20 showed no activity or even stimulated fungal growth. The results of the Kirby-Bauer disc diffusion susceptibility test for C. parapsilosis strains indicated stronger antifungal activity of AgNPs-H than fluconazole. The study demonstrated that the antifungal activity of AgNPs is closely related to the concentration of honey used for the synthesis thereof.
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12
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Song S, Li Y, Liu QS, Wang H, Li P, Shi J, Hu L, Zhang H, Liu Y, Li K, Zhao X, Cai Z. Interaction of mercury ion (Hg 2+) with blood and cytotoxicity attenuation by serum albumin binding. JOURNAL OF HAZARDOUS MATERIALS 2021; 412:125158. [PMID: 33540265 DOI: 10.1016/j.jhazmat.2021.125158] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 01/11/2021] [Accepted: 01/13/2021] [Indexed: 06/12/2023]
Abstract
Blood mercury reflects the amount available from tissues, which is an indication of the exposure level. Here we confirm that Hg2+ caused hemolytic effects at high concentrations; while at light concentrations, most of the ions were bound to human serum albumin (HSA). The binding mechanism of Hg2+ to HSA has been investigated, which indicated that the presence of Hg2+ significantly perturbed the structure of HSA and quenched the fluorescence of protein in a hybrid dynamic and static mode. Hg2+ was preferably bound to cysteine and cystine, where the R‒S‒S‒R structure is responsible for maintaining the protein's structure by stabilizing the α-helical bundles. The metal-protein interaction mitigated the cellular toxicity as concealed by A498 cell lines. The fundamental and comprehensive data in this work is beneficial to elucidating and understanding the identification and binding mechanisms of heavy metals with proteins, as well as possible risks on human beings and the environment.
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Affiliation(s)
- Shanjun Song
- National Institute of Metrology, Beijing 100013, China
| | - Yiling Li
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Qian S Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Huiyu Wang
- National Institute of Metrology, Beijing 100013, China
| | - Penghui Li
- Tianjin University of Technology, Tianjin 300384, China
| | - Jianbo Shi
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Ligang Hu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Haiyan Zhang
- Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
| | - Yuanchen Liu
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong SAR, China
| | - Kun Li
- State Key Laboratory of Cotton Biology, Key Laboratory of Plant Stress Biology, School of Life Sciences, Henan University, Kaifeng 475001, China
| | - Xingchen Zhao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong SAR, China.
| | - Zongwei Cai
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong SAR, China.
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Chu S, He F, Yu H, Liu G, Wan J, Jing M, Li Y, Cui Z, Liu R. Evaluation of the binding of UFCB and Pb-UFCB to pepsin: Spectroscopic analysis and enzyme activity assay. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115511] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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14
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Zhuang QQ, Chen RT, Zheng YJ, Huang KY, Peng HP, Lin Z, Xia XH, Chen W, Deng HH. Detection of tetanus toxoid with fluorescent tetanus human IgG-AuNC-based immunochromatography test strip. Biosens Bioelectron 2021; 177:112977. [PMID: 33434779 DOI: 10.1016/j.bios.2021.112977] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 12/31/2020] [Accepted: 01/03/2021] [Indexed: 11/29/2022]
Abstract
Assays for detecting tetanus toxoid are of great significance to be applied in the research of the safety testing of tetanus vaccine. Currently, guinea pigs or mice are usually used to evaluate the toxicity in these assays. Herein, a facile and quick biomineralization process was carried out to generate tetanus human immunoglobulin G (Tet-IgG)-functionalized Au nanoclusters (Tet-IgG-AuNCs). The obtained Tet-IgG-AuNCs exhibited strong red emission with a photoluminescence quantum yield of 13%. Based on surface plasmon resonance measurements, the apparent dissociation constant of the Tet-IgG-AuNC-tetanus toxoid complexes was measured to be 2.27 × 10-8 M. A facile detection approach was developed using a fluorescent Tet-IgG-AuNC-based immunochromatography test strip. By utilizing the high-brightness fluorescent Tet-IgG-AuNCs, this immunosensor showed favorable sensitivity with a detection limit at the level of 0.03 μg/mL. Further results demonstrated that this assay can reliably detect tetanus toxoid and therefore might provide a novel method to replace animal tests for the quantification of tetanus toxicity. Moreover, the antibody-AuNC-based immunochromatography test strip platform serves as a promising candidate to develop new approaches for detecting targeted antigens and biological events of interest.
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Affiliation(s)
- Quan-Quan Zhuang
- Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province, Department of Pharmaceutical Analysis, Fujian Medical University, Fuzhou, 350004, China; Department of Pharmacy, Affiliated Quanzhou First Hospital of Fujian Medical University, Quanzhou, 362000, China
| | - Rui-Ting Chen
- Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province, Department of Pharmaceutical Analysis, Fujian Medical University, Fuzhou, 350004, China
| | - Yi-Jing Zheng
- Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province, Department of Pharmaceutical Analysis, Fujian Medical University, Fuzhou, 350004, China
| | - Kai-Yuan Huang
- Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province, Department of Pharmaceutical Analysis, Fujian Medical University, Fuzhou, 350004, China
| | - Hua-Ping Peng
- Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province, Department of Pharmaceutical Analysis, Fujian Medical University, Fuzhou, 350004, China
| | - Zhen Lin
- Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province, Department of Pharmaceutical Analysis, Fujian Medical University, Fuzhou, 350004, China
| | - Xing-Hua Xia
- State Key Laboratory of Analytical Chemistry for Life Science and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Wei Chen
- Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province, Department of Pharmaceutical Analysis, Fujian Medical University, Fuzhou, 350004, China.
| | - Hao-Hua Deng
- Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province, Department of Pharmaceutical Analysis, Fujian Medical University, Fuzhou, 350004, China.
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15
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Kanzaki C, Matoba S, Inagawa A, Fukuhara G, Okada T, Narushima T, Okamoto H, Numata M. Linear Momentum of a Microfluid Realizes an Anisotropic Reaction at the Ends of a Supramolecular Nanofiber. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200279] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Chisako Kanzaki
- Department of Biomolecular Chemistry, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Shimogamo, Sakyo-ku, Kyoto 606-8522, Japan
| | - Shota Matoba
- Department of Biomolecular Chemistry, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Shimogamo, Sakyo-ku, Kyoto 606-8522, Japan
| | - Arinori Inagawa
- Graduate School of Regional Development and Creativity, Utsunomiya University, Utsunomiya, Tochigi 321-8585, Japan
| | - Gaku Fukuhara
- Department of Chemistry, Tokyo Institute of Technology, Tokyo 152-8551, Japan
- JST, PRESTO, Kawaguchi, Saitama 332-0012, Japan
| | - Tetsuo Okada
- Department of Chemistry, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - Tetsuya Narushima
- Institute for Molecular Science and The Graduate University for Advanced Studies (Sokendai), 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan
| | - Hiromi Okamoto
- Institute for Molecular Science and The Graduate University for Advanced Studies (Sokendai), 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan
| | - Munenori Numata
- Department of Biomolecular Chemistry, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Shimogamo, Sakyo-ku, Kyoto 606-8522, Japan
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16
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Manganaro N, Zagami R, Trapani M, Castriciano MA, Romeo A, Scolaro LM. Role of Cobalt(III) Cationic Complexes in the Self-Assembling Process of a Water Soluble Porphyrin. Int J Mol Sci 2020; 22:ijms22010039. [PMID: 33375184 PMCID: PMC7792976 DOI: 10.3390/ijms22010039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 12/18/2020] [Accepted: 12/20/2020] [Indexed: 12/26/2022] Open
Abstract
Under moderate acidic conditions, the cationic (+3) complexes ions tris(1,10-phenanthroline)cobalt(III), [Co(phen)3]3+, and hexamminecobalt(III), [Co(NH3)6]3+, efficiently promote the self-assembling process of the diacid 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin (H2TPPS4) into J-aggregates. The growth kinetics have been analyzed according to a well-established autocatalytic model, in which the rate determining step is the initial formation of a nucleus containing m porphyrin units (in the range 2–3), followed by a stage whose rate constant kc evolves as a power of time. The observed catalytic rate constants and the extent of J-aggregation increase on increasing the metal complex concentration, with the phen complex being the less active. The UV/Vis extinction spectra display quite broad envelops at the J-band, especially for the amino-complex, suggesting that electronic dipolar coupling between chromophores is operative in these species. The occurrence of spontaneous symmetry breaking has been revealed by circular dichroism and the measured dissymmetry g-factor decreases on increasing the aggregation rates. The role of these metal complexes on the growth and stabilization of porphyrin nano-assemblies is discussed in terms of the different degree of hydrophilicity and hydrogen bonding ability of the ligands present in the coordination sphere around the metal center.
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Affiliation(s)
- Nadia Manganaro
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina and C.I.R.C.M.S.B V.le F. Stagno D’Alcontres, 31-98166 Messina, Italy; (N.M.); (A.R.)
| | - Roberto Zagami
- CNR—ISMN Istituto per lo Studio dei Materiali Nanostrutturati c/o Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina, V.le F. Stagno D’Alcontres, 31-98166 Messina, Italy; (R.Z.); (M.T.); (M.A.C.)
| | - Mariachiara Trapani
- CNR—ISMN Istituto per lo Studio dei Materiali Nanostrutturati c/o Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina, V.le F. Stagno D’Alcontres, 31-98166 Messina, Italy; (R.Z.); (M.T.); (M.A.C.)
| | - Maria Angela Castriciano
- CNR—ISMN Istituto per lo Studio dei Materiali Nanostrutturati c/o Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina, V.le F. Stagno D’Alcontres, 31-98166 Messina, Italy; (R.Z.); (M.T.); (M.A.C.)
| | - Andrea Romeo
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina and C.I.R.C.M.S.B V.le F. Stagno D’Alcontres, 31-98166 Messina, Italy; (N.M.); (A.R.)
- CNR—ISMN Istituto per lo Studio dei Materiali Nanostrutturati c/o Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina, V.le F. Stagno D’Alcontres, 31-98166 Messina, Italy; (R.Z.); (M.T.); (M.A.C.)
| | - Luigi Monsù Scolaro
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina and C.I.R.C.M.S.B V.le F. Stagno D’Alcontres, 31-98166 Messina, Italy; (N.M.); (A.R.)
- CNR—ISMN Istituto per lo Studio dei Materiali Nanostrutturati c/o Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina, V.le F. Stagno D’Alcontres, 31-98166 Messina, Italy; (R.Z.); (M.T.); (M.A.C.)
- Correspondence: ; Tel.: +39-090-6765711
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17
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Kanzaki C, Inagawa A, Fukuhara G, Okada T, Numata M. Proton‐Gradient‐Driven Self‐Assembly of Porphyrin and In Situ Dynamic Analysis in a Microflow Platform. CHEMSYSTEMSCHEM 2020. [DOI: 10.1002/syst.202000006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Chisako Kanzaki
- Department of Biomolecular Chemistry Graduate School of Life and Environmental SciencesKyoto Prefectural University, Shimogamo Sakyo-ku Kyoto 606-8522 Japan
| | - Arinori Inagawa
- Graduate School of Regional Development and CreativityUtsunomiya University Tochigi 321-8585 Japan
| | - Gaku Fukuhara
- Department of ChemistryTokyo Institute of Technology Tokyo 152-8551 Japan
- JST, PRESTO Saitama 332-0012 Japan
| | - Tetsuo Okada
- Department of ChemistryTokyo Institute of Technology Tokyo 152-8551 Japan
| | - Munenori Numata
- Department of Biomolecular Chemistry Graduate School of Life and Environmental SciencesKyoto Prefectural University, Shimogamo Sakyo-ku Kyoto 606-8522 Japan
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18
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Xu JX, Yuan Y, Liu M, Zou S, Chen O, Zhang D. Quantification of the Photon Absorption, Scattering, and On-Resonance Emission Properties of CdSe/CdS Core/Shell Quantum Dots: Effect of Shell Geometry and Volumes. Anal Chem 2020; 92:5346-5353. [PMID: 32126174 DOI: 10.1021/acs.analchem.0c00016] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Reliable quantification of the optical properties of fluorescent quantum dots (QDs) is critical for their photochemical, -physical, and -biological applications. Presented herein is the experimental quantification of photon scattering, absorption, and on-resonance-fluorescence (ORF) activities of CdSe/CdS core/shell fluorescent QDs as a function of the shell sizes and geometries. Four spherical QDs (SQDs) with different diameters and four rod-like QDs (RQDs) with different aspect ratios (ARs) have been analyzed using UV-vis, fluorescence, and the recent polarized resonance synchronous spectroscopic (PRS2) methods. All quantum dots are simultaneous absorbers and scatterers in the UV-vis wavelength region, and they all exhibit strong ORF emission in the wavelength regions where the QDs both absorb and emit. The absorption and scattering cross-sections of the CdS shell are linearly and quadratically, respectively, proportional to the shell volume for both the SQDs and RQDs. However, the effects of CdS shell coating on the core optical properties are different between SQDs and RQDs. For RQDs, increasing the CdS shell volume through the length elongation has no effect on either the peak wavelength or intensity of the CdSe core UV-vis absorption and ORF, but it reduces the QD fluorescence depolarization. In contrast, increasing CdS shell volume in the SQDs induces red-shift in the CdSe core peak UV-vis absorption and ORF wavelengths, and increases their peak cross-sections, but it has no effect on the SQD fluorescence depolarization. The RQD ORF cross-sections and quantum yields are significantly higher than their respective counterparts for the SQDs with similar particle sizes (volumes). While these new insights should be significant for the QD design, characterization, and applications, the methodology presented in this work is directly applicable for quantifying the optical activities of optically complex materials where the common UV-vis spectrometry and fluorescence spectroscopy are inadequate.
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Affiliation(s)
- Joanna Xiuzhu Xu
- Department of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Yucheng Yuan
- Department of Chemistry, Brown University, 324 Brook Street, Providence, Rhode Island 02912, United States
| | - Muqiong Liu
- Department of Chemistry, University of Central Florida, Orlando, Florida 32816, United States
| | - Shengli Zou
- Department of Chemistry, University of Central Florida, Orlando, Florida 32816, United States
| | - Ou Chen
- Department of Chemistry, Brown University, 324 Brook Street, Providence, Rhode Island 02912, United States
| | - Dongmao Zhang
- Department of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
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19
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Gradova MA, Gradov OV, Zhdanova KA, Bragina NA, Lobanov AV. Self-assembly of amphiphilic meso-aryl-substituted porphyrin derivatives in the presence of surfactants. J PORPHYR PHTHALOCYA 2020. [DOI: 10.1142/s108842461950175x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Surfactant-assisted self-assembly of porphyrin molecules in aqueous solutions sometimes leads to the formation of hybrid supramolecular structures with unusual photophysical properties resulting from the dipole–dipole interactions between the neighboring aromatic systems. The macrocycle orientation and interchromophore distance in such assemblies are determined by the dye–surfactant interactions, and hence, strongly depend on the molecular structure of both surfactant and porphyrin molecules. In this paper we studied the influence of the number and position of the peripheral alkyl chains of amphiphilic meso-aryl-substituted porphyrins on their aggregation behavior and intermolecular interactions with different surfactants in aqueous solutions. The studies revealed a crucial role of the local acidity on the micellar surface in the protolytic equilibrium of the porphyrin derivatives, as well as the influence of the macrocycle hydrophilic–lipophilic balance on its solubilization site within a micellar system. These findings enable prediction of the photophysical properties of amphiphilic porphyrin derivatives in the presence of different solubilizing agents and membrane-mimetic systems, and hence, selection the most suitable drug delivery systems for the novel amphiphilic porphyrin-based photosensitizers.
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Affiliation(s)
- Margaret A. Gradova
- N.N. Semenov Federal Research Center of Chemical Physics, Russian Academy of Sciences, Kosygin Street 4, Moscow, 119991, Russia
| | - Oleg V. Gradov
- N.N. Semenov Federal Research Center of Chemical Physics, Russian Academy of Sciences, Kosygin Street 4, Moscow, 119991, Russia
| | - Kseniya A. Zhdanova
- MIREA — Russian Technological University, Vernadsky Prospect 86, Moscow, 119571, Russia
| | - Natalya A. Bragina
- MIREA — Russian Technological University, Vernadsky Prospect 86, Moscow, 119571, Russia
| | - Anton V. Lobanov
- N.N. Semenov Federal Research Center of Chemical Physics, Russian Academy of Sciences, Kosygin Street 4, Moscow, 119991, Russia
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20
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Pergamenshchik VM, Multian VV, Gayvoronsky VY, Uzunova VA, Kredentser SV, Nazarenko VG. Interaction of supramolecular aggregates and the enhanced optical torque on the director in a dye doped nematic liquid crystal. SOFT MATTER 2019; 15:8886-8895. [PMID: 31617556 DOI: 10.1039/c9sm01705d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
There has been strong experimental evidence that molecules of some dyes in an anisotropic solvent, nematic liquid crystal, form aggregates. We present a detailed experimental analysis of the light-induced director reorientation (DR) in a dye-doped nematic liquid crystal (known as the Jánossy effect) and a theoretical model of its strong enhancement based on the aggregates' interaction. The DR transition is found to be very different from the Frederiks effect. If the light polarization is normal to the director, the transition is jump-like first order. Moreover, light polarization along the director also induces a DR which is a smooth second order transition with a very low threshold intensity. The theoretical model which explains these effects is based on the idea that dye molecules form rodlike supramolecular aggregates. The aggregates interact via the director distortions and their effective diameter gets certain field-dependence. As a result, the related entropy depletion depends on the light intensity and polarization and can be decreased by a certain DR along with the aggregate subsystem. This entropy gain is proportional to the square of light intensity which is a two-photon effect: the first resonance photon excites the dye molecule and the second photon polarizes the aggregate. This is in line with the experimental dependence of the critical intensity on the sample thickness. A special experiment shows that the effect is not connected with a possible heat-induced isotropic phase and hydrodynamic motion.
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Affiliation(s)
| | - V V Multian
- Institute of Physics, Prospect Nauki 46, Kiev 03039, Ukraine.
| | | | - V A Uzunova
- Institute of Physics, Prospect Nauki 46, Kiev 03039, Ukraine.
| | - S V Kredentser
- Institute of Physics, Prospect Nauki 46, Kiev 03039, Ukraine.
| | - V G Nazarenko
- Institute of Physics, Prospect Nauki 46, Kiev 03039, Ukraine.
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21
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Budziak I, Karcz D, Makowski M, Myśliwa-Kurdziel B, Kasprzak K, Matwijczuk A, Chruściel E, Oniszczuk A, Adwent L, Matwijczuk A. Spectroscopic and theoretical investigation into substituent- and aggregation-related dual fluorescence effects in the selected 2-amino-1,3,4-thiadiazoles. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111261] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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22
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Shao S, Fu W, Li X, Shi D, Jiang Y, Li J, Gong T, Li X. Membrane fouling by the aggregations formed from oppositely charged organic foulants. WATER RESEARCH 2019; 159:95-101. [PMID: 31078756 DOI: 10.1016/j.watres.2019.05.004] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 04/27/2019] [Accepted: 05/02/2019] [Indexed: 06/09/2023]
Abstract
Due to the lack of robust ways to quantify aggregations, fouling of two-foulant aggregations is poorly understood. This work systematically reports the ultrafiltration membrane fouling by aggregations formed from two oppositely charged organic foulants (i.e., humic acid (HA) and lysozyme (LYS)) with the aid of resonance light scattering (RLS) technique. RLS provides an effective approach to detecting the aggregation concentration and reveals that the HA-LYS aggregations were formed at a mass ratio of m(LYS)/m(HA) = 2.77. During the filtration of the mixture of HA and LYS, aggregations over individual foulants were identified to be the main substances deposited on the membrane surface, where the mass of deposition had a good linear relationship with the feed concentration of the aggregations. The HA-LYS aggregations might decrease the total fouling due to their large size, but reduce the fouling reversibility. In the pH range of 5.5-9.2, the pH value had limiting effects on the concentration of HA-LYS aggregations, as well as the consequent fouling. At low ionic strength, the membrane fouling by HA-LYS aggregations decreased as the ionic strength increased due to the reduction of the aggregation concentration. Oppositely, at high ionic strength, this tendency was reversed due to the electrical double layer compression effect. These results suggest that RLS is a simple and effective way to quantify the aggregations of foulants, and the aggregations of foulants have distinct fouling behaviors compared with the individual foulants.
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Affiliation(s)
- Senlin Shao
- School of Civil Engineering, Wuhan University, PR China.
| | - Wenwen Fu
- School of Civil Engineering, Wuhan University, PR China
| | - Xiujuan Li
- Key Laboratory of Biomedical Polymers of Ministry of Education, College of Chemistry and Molecular Science, Wuhan University, Wuhan, PR China
| | - Danting Shi
- School of Civil Engineering, Wuhan University, PR China.
| | - Yu Jiang
- School of Civil Engineering, Wuhan University, PR China
| | - Jiangyun Li
- School of Civil Engineering, Wuhan University, PR China
| | - Tengjing Gong
- School of Civil Engineering, Wuhan University, PR China
| | - Xue Li
- Key Laboratory of Biomedical Polymers of Ministry of Education, College of Chemistry and Molecular Science, Wuhan University, Wuhan, PR China; Wuhan University Shenzhen Research Institute, Shenzhen, Guangdong, 518057, PR China.
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23
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Priyadarshini E, Rawat K, Bohidar HB. Multimode sensing of riboflavin via Ag@carbon dot conjugates. APPLIED NANOSCIENCE 2019. [DOI: 10.1007/s13204-019-01090-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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24
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Calori IR, Jayme CC, Ueno LT, Machado FBC, Tedesco AC. Theoretical and experimental studies concerning monomer/aggregates equilibrium of zinc phthalocyanine for future photodynamic action. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 214:513-521. [PMID: 30818150 DOI: 10.1016/j.saa.2019.02.086] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 01/16/2019] [Accepted: 02/17/2019] [Indexed: 06/09/2023]
Abstract
Monomeric zinc phthalocyanine has been studied as a promising active photosensitizer in photodynamic therapy against cancer, in which its aggregate form is non-active. This paper aimed to describe the monomer/aggregates equilibrium of zinc phthalocyanine in binary water/DMSO mixtures. To reach this aim theoretical calculation, electronic absorption, static and time-resolved fluorescence, and resonance light scattering was used. Zinc phthalocyanine shows a complex water dependence behavior in the mixture. At least three distinct steps were observed: (i) until 30% water zinc phthalocyanine is essentially in the monomeric form, changing to (ii) small slipped cofacial-aggregates around 30% to 40% water and finally to (iii) a staircase arrangement of large aggregates at higher water percent. The staircase arrangement is driven by the intermolecular coordination between the pyrrolic nitrogen lone-pairs and the central metal zinc. The water-Zn coordination governs the fluorescence quenching by a static mechanism. These results have direct relevance in the better understanding on the behavior of zinc phthalocyanine in vivo and when incorporated in drug delivery systems for clinical applications in photodynamic therapy.
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Affiliation(s)
- Italo Rodrigo Calori
- Department of Chemistry, Center of Nanotechnology and Tissue Engineering-Photobiology and Photomedicine Research Group, Faculty of Philosophy, Sciences and Letters of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo 14040-901, Brazil
| | - Cristiano Ceron Jayme
- Department of Chemistry, Center of Nanotechnology and Tissue Engineering-Photobiology and Photomedicine Research Group, Faculty of Philosophy, Sciences and Letters of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo 14040-901, Brazil; School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo 14040-901, Brazil
| | - Leonardo Tsuyoshi Ueno
- Instituto Tecnológico de Aeronáutica, Departamento de Química, Comando-Geral de Tecnologia Aeroespacial, São José dos Campos, São Paulo 12228-900, Brazil
| | - Francisco Bolivar Correto Machado
- Instituto Tecnológico de Aeronáutica, Departamento de Química, Comando-Geral de Tecnologia Aeroespacial, São José dos Campos, São Paulo 12228-900, Brazil
| | - Antonio Claudio Tedesco
- Department of Chemistry, Center of Nanotechnology and Tissue Engineering-Photobiology and Photomedicine Research Group, Faculty of Philosophy, Sciences and Letters of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo 14040-901, Brazil; School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo 14040-901, Brazil.
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25
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Zhang LM, Cui YX, Zhu LN, Chu JQ, Kong DM. Cationic porphyrins with large side arm substituents as resonance light scattering ratiometric probes for specific recognition of nucleic acid G-quadruplexes. Nucleic Acids Res 2019; 47:2727-2738. [PMID: 30715502 PMCID: PMC6451126 DOI: 10.1093/nar/gkz064] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 01/14/2019] [Accepted: 01/26/2019] [Indexed: 12/04/2022] Open
Abstract
Specific G-quadruplex-probing is crucial for both biological sciences and biosensing applications. Most reported probes are focused on fluorescent or colorimetric recognition of G-quadruplexes. Herein, for the first time, we reported a new specific G-quadruplex-probing technique-resonance light scattering (RLS)-based ratiometric recognition. To achieve the RLS probing of G-quadruplexes in the important physiological pH range of 7.4-6.0, four water soluble cationic porphyrin derivatives, including an unreported octa-cationic porphyrin, with large side arm substituents were synthesized and developed as RLS probes. These RLS probes were demonstrated to work well for ratiometric recognition of G-quadruplexes with high specificity against single- and double-stranded DNAs, including long double-stranded ones. The working mechanism was speculated to be based on the RLS signal changes caused by porphyrin protonation that was promoted by the end-stacking of porphyrins on G-quadruplexes. This work adds an important member in G-quadruplex probe family, thus providing a useful tool for studies on G-quadruplex-related events concerning G-quadruplex formation, destruction and changes in size, shape and aggregation. As a proof-of-concept example of applications, the RLS probes were demonstrated to work well for label-free and sequence-specific sensing of microRNA. This work also provides a simple and useful way for the preparation of cationic porphyrins with high charges.
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Affiliation(s)
- Li-Ming Zhang
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - Yun-Xi Cui
- Tianjin Key Laboratory of Biosensing and Molecular Recognition, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Li-Na Zhu
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - Jun-Qing Chu
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - De-Ming Kong
- Tianjin Key Laboratory of Biosensing and Molecular Recognition, College of Chemistry, Nankai University, Tianjin 300071, China
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26
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Trapani M, Occhiuto IG, Zagami R, De Luca G, Castriciano MA, Romeo A, Scolaro LM, Pasternack RF. Mechanism for Copper(II)-Mediated Disaggregation of a Porphyrin J-Aggregate. ACS OMEGA 2018; 3:18843-18848. [PMID: 31458447 PMCID: PMC6643757 DOI: 10.1021/acsomega.8b02913] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 12/19/2018] [Indexed: 05/27/2023]
Abstract
J-aggregates of anionic meso-tetrakis(4-sulfonatophenyl)porphyrin form at intermediate pH (2.3-3.1) in the presence of NiSO4 or ZnSO4 (ionic strength, I.S. = 3.2 M). These aggregates convert to monomeric porphyrin units via metallation with copper(II) ions. The kinetics for the disassembly process, as monitored by UV/vis spectroscopy, exhibits zeroth-order behavior. The observed zeroth-order rate constants show a two-term dependence on copper(II) ion concentrations: linear and second order. Also observed is an inverse dependence on hydrogen ion concentration. Activation parameters have been determined for the disassembly process leading to ΔH ≠ = (+163 ± 15) kJ·mol-1 and ΔS ≠ = (+136 ± 11) J·K-1. A mechanism is proposed in which copper(II) cation is in pre-equilibrium with a reactive site at the rim of the J-aggregate. An intermediate copper species is thus formed that eventually leads to the final metallated porphyrin either through an assisted attack of a second metal ion or through a direct insertion of the metal cation into the macrocycle core.
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Affiliation(s)
- Mariachiara Trapani
- CNR-ISMN, Istituto
per lo Studio dei Materiali Nanostrutturati, c/o Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche
ad Ambientali, 98166 V.le F. Stagno D’Alcontres 31, Messina, Italy
| | - Ilaria G. Occhiuto
- Dipartimento di
Scienze Chimiche, Biologiche, Farmaceutiche ad Ambientali, and C.I.R.C.M.S.B., University of Messina, V.le F. Stagno D’Alcontres 31, Vill. S.
Agata, 98166 Messina, Italy
| | - Roberto Zagami
- CNR-ISMN, Istituto
per lo Studio dei Materiali Nanostrutturati, c/o Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche
ad Ambientali, 98166 V.le F. Stagno D’Alcontres 31, Messina, Italy
| | - Giovanna De Luca
- Dipartimento di
Scienze Chimiche, Biologiche, Farmaceutiche ad Ambientali, and C.I.R.C.M.S.B., University of Messina, V.le F. Stagno D’Alcontres 31, Vill. S.
Agata, 98166 Messina, Italy
- CNR-IPCB, Istituto dei Polimeri, Compositi
e Biomateriali, P.le
Enrico Fermi 1, 80055 Portici, Naples, Italy
| | - Maria A. Castriciano
- CNR-ISMN, Istituto
per lo Studio dei Materiali Nanostrutturati, c/o Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche
ad Ambientali, 98166 V.le F. Stagno D’Alcontres 31, Messina, Italy
| | - Andrea Romeo
- CNR-ISMN, Istituto
per lo Studio dei Materiali Nanostrutturati, c/o Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche
ad Ambientali, 98166 V.le F. Stagno D’Alcontres 31, Messina, Italy
- Dipartimento di
Scienze Chimiche, Biologiche, Farmaceutiche ad Ambientali, and C.I.R.C.M.S.B., University of Messina, V.le F. Stagno D’Alcontres 31, Vill. S.
Agata, 98166 Messina, Italy
| | - Luigi Monsù Scolaro
- CNR-ISMN, Istituto
per lo Studio dei Materiali Nanostrutturati, c/o Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche
ad Ambientali, 98166 V.le F. Stagno D’Alcontres 31, Messina, Italy
- Dipartimento di
Scienze Chimiche, Biologiche, Farmaceutiche ad Ambientali, and C.I.R.C.M.S.B., University of Messina, V.le F. Stagno D’Alcontres 31, Vill. S.
Agata, 98166 Messina, Italy
| | - Robert F. Pasternack
- Department of Chemistry & Biochemistry, Swarthmore College, 500 College Avenue, Swarthmore, Pennsylvania 19081, United States
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27
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Dell'Elce S, Liscio F, Kovtun A, Allegri S, Roscioni OM, Albonetti C, De Luca G, Amenitsch HW, Demitri N, Giorgini L, Morandi V, Stellacci F, Liscio A, Palermo V. 3D to 2D reorganization of silver-thiol nanostructures, triggered by solvent vapor annealing. NANOSCALE 2018; 10:23018-23026. [PMID: 30506071 DOI: 10.1039/c8nr07109h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Metal-organic composites are of great interest for a wide range of applications. The control of their structure remains a challenge, one of the problems being a complex interplay of covalent and supramolecular interactions. This paper describes the self-assembly, thermal stability and phase transitions of ordered structures of silver atoms and thiol molecules spanning from the molecular to the mesoscopic scale. Building blocks of molecularly defined clusters formed from 44 silver atoms, each particle coated by a monolayer of 30 thiol ligands, are used as ideal building blocks. By changing solvent and temperature it is possible to tune the self-assembled 3D crystals of pristine nanoparticles or, conversely, 2D layered structures, with alternated stacks of Ag atoms and thiol monolayers. The study investigates morphological, chemical and structural stability of these materials between 25 and 300 °C in situ and ex situ at the nanoscale by combining optical and electronic spectroscopic and scattering techniques, scanning probe microscopies and density-functional theory (DFT) calculations. The proposed wet-chemistry approach is relatively cheap, easy to implement, and scalable, allowing the fabricated materials with tuned properties using the same building blocks.
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Bi S, Sun X, Wang Y, Wu J, Zhou H. A sensitive resonance Rayleigh light scattering method for alpinetin using gold nanorods probes. LUMINESCENCE 2018; 33:1164-1170. [PMID: 30047614 DOI: 10.1002/bio.3531] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 06/07/2018] [Accepted: 06/08/2018] [Indexed: 11/11/2022]
Abstract
A sensitive resonance Rayleigh light scattering (RLS) assay for alpinetin was developed based on alpinetin-modified gold nanorods (AuNRs). Alpinetin could interact with AuNRs and formed a new assembly by electrostatic attraction. In pH 7.4 Tris-HCl buffer solution, the assembly of alpinetin-AuNRs showed a sensitive RLS signal. Under optimum conditions, the magnitude of enhanced RLS intensity (ΔIRLS ) was proportional to the concentration of alpinetin over the range 0.027-3.24 μg ml-1 , with a detection limit of 1.79 ng ml-1 (by 3σ). The developed RLS method was successfully applied to the detection of alpinetin in real or synthesized samples. Alpinetin recoveries were 90.4-108.7% with an RSD of 0.82-2.9% (n = 5) for Alpinia katsumadai samples, and 95.1-103.7% with an RSD of 0.28-3.9% (n = 5) for synthesized samples. The results showed that this new approach was convenient, reliable and sensitive.
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Affiliation(s)
- Shuyun Bi
- College of Chemistry, Changchun Normal University, Changchun, Peoples Republic of China
| | - Xiaoyue Sun
- College of Chemistry, Changchun Normal University, Changchun, Peoples Republic of China
| | - Yu Wang
- College of Chemistry, Changchun Normal University, Changchun, Peoples Republic of China
| | - Jun Wu
- College of Chemistry, Changchun Normal University, Changchun, Peoples Republic of China
| | - Huifeng Zhou
- College of Chemistry, Changchun Normal University, Changchun, Peoples Republic of China
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29
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Yue Q, Tao L, Hou Y, Zhang C, Wang Y, Hong M, Li CZ. Assay of miRNA in cell samples using enhanced resonance light scattering technique based on self aggregation of magnetic nanoparticles. Nanomedicine (Lond) 2018; 13:2301-2310. [PMID: 30284477 DOI: 10.2217/nnm-2018-0066] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AIMS miRNAs are regarded as potential biomarkers correlated with the development and progression of many diseases. However, it is a challenge to construct a sensitive method to detect them without using time-consuming radioactive labeling or complex amplification strategies. METHODS A facile resonance light scattering (RLS) system was developed for the detection of miRNA employing magnetic nanoparticles (MNPs) as RLS probes. MNPs were coated with streptavidin. DNA probes were modified on the surface of MNPs based on the specific interaction of streptavidin and biotin forming MNPs@DNA probes. MNPs@DNA probes dispersed in homogeneous media causing low RLS signal. RESULTS & CONCLUSION miRNA hybridized with DNA probes resulting in the aggregation of MNPs and inducing the enhancement of RLS intensity. miRNAs were determined successfully with limit of detection at 0.9 picomole per liter (pM). The potential clinical application of the present biosensor was also demonstrated by measuring miRNAs in human normal and cancer cells, and human serum samples.
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Affiliation(s)
- Qiaoli Yue
- Department of Chemistry, Liaocheng University, Liaocheng 252059, China
| | - Lixia Tao
- Department of Chemistry, Liaocheng University, Liaocheng 252059, China
| | - Yining Hou
- Department of Chemistry, Liaocheng University, Liaocheng 252059, China
| | - Cong Zhang
- Department of Chemistry, Liaocheng University, Liaocheng 252059, China
| | - Yongping Wang
- Department of Chemistry, Liaocheng University, Liaocheng 252059, China
| | - Min Hong
- Department of Chemistry, Liaocheng University, Liaocheng 252059, China
| | - Chen-Zhong Li
- Department of Chemistry, Liaocheng University, Liaocheng 252059, China.,Nanobioengineering/Bioelectronics Laboratory, Department of Biomedical Engineering, Florida International University, Miami, FL 33174, USA
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30
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Vithanage BCN, Xu JX, Zhang D. Optical Properties and Kinetics: New Insights to the Porphyrin Assembly and Disassembly by Polarized Resonance Synchronous Spectroscopy. J Phys Chem B 2018; 122:8429-8438. [PMID: 30102542 DOI: 10.1021/acs.jpcb.8b05965] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
With their unique photochemical properties, porphyrins have remained for decades the most interested chemicals as photonic materials for applications ranging from chemistry, biology, medicine, to photovoltaic. Porphyrins can self-assemble into higher order structures. However, information has been scant on the kinetics and structural evolution during porphyrin assembly and disassembly. Furthermore, quantitative understanding of the porphyrin optical activities is complicated by the complex interplay of photon absorption, scattering, and fluorescence emission that can concurrently occur in porphyrin samples. Using meso-tetrakis(4-sulfonatophenyl)porphyrin as the model molecule, reported herein is a combined UV-vis extinction, polarized Stokes-shifted fluorescence, and polarized resonance synchronous spectroscopic (PRS2) study of porphyrin assembly and disassembly in acidic solutions. Although porphyrin assembly and disassembly occur instantaneously upon the sample preparation, both processes last at least a few months before reaching their approximate equilibrium states. The two processes were monitored in situ by quantifying the porphyrin fluorescence and scattering depolarizations as well as its extinction, absorption, scattering, and fluorescence emission cross sections. In addition to a series of new insights to the porphyrin assembly and disassembly, the methodology described in this work opens the door for the in situ study of the structural and optical properties of photonic materials comprising molecular assembly.
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Affiliation(s)
- Buddhini C N Vithanage
- Department of Chemistry , Mississippi State University , Mississippi State , Mississippi 39762 , United States
| | - Joanna Xiuzhu Xu
- Department of Chemistry , Mississippi State University , Mississippi State , Mississippi 39762 , United States
| | - Dongmao Zhang
- Department of Chemistry , Mississippi State University , Mississippi State , Mississippi 39762 , United States.,Department of Chemistry , Xihua University , Chengdu 610039 , China
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31
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Molecular Synchronization Enhances Molecular Interactions: An Explanatory Note of Pressure Effects. CRYSTALS 2018. [DOI: 10.3390/cryst8070300] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
In this study, we investigated a unique aspect of the supramolecular polymerization of tetrakis (4-sulfonatophenyl) porphyrin (TPPS), a self-assembling porphyrin, under non-equilibrium conditions by subtracting the effects of back-pressure on its polymerization. We focused on the enhanced self-assembly abilities of TPPS under a process of rapid proton diffusion in a microflow channel. Rapid protonation caused synchronization of many sets of protonation/deprotonation equilibria on the molecular scale, leading to the production of many sets of growing suparmolecular spices. Pressure effects in the microflow channel, which could potentially promote self-assembly of TPPS, were negligible, becoming predominant only when the system was in the synchronized state.
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32
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Jäger P, Brendle K, Schneider E, Kohaut S, Armbruster MK, Fink K, Weis P, Kappes MM. Photodissociation of Free Metalloporphyrin Dimer Multianions. J Phys Chem A 2018; 122:2974-2982. [PMID: 29490134 DOI: 10.1021/acs.jpca.8b00641] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Patrick Jäger
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Postfach 3630, 76021 Karlsruhe, Germany
| | - Katrina Brendle
- Institute of Physical Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 2, 76131 Karlsruhe, Germany
| | - Erik Schneider
- Institute of Physical Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 2, 76131 Karlsruhe, Germany
| | - Stephan Kohaut
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Postfach 3630, 76021 Karlsruhe, Germany
| | - Markus K. Armbruster
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Postfach 3630, 76021 Karlsruhe, Germany
| | - Karin Fink
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Postfach 3630, 76021 Karlsruhe, Germany
| | - Patrick Weis
- Institute of Physical Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 2, 76131 Karlsruhe, Germany
| | - Manfred M. Kappes
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Postfach 3630, 76021 Karlsruhe, Germany
- Institute of Physical Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 2, 76131 Karlsruhe, Germany
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33
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Xu JX, Vithanage BCN, Athukorale SA, Zhang D. Scattering and absorption differ drastically in their inner filter effects on fluorescence, resonance synchronous, and polarized resonance synchronous spectroscopic measurements. Analyst 2018; 143:3382-3389. [DOI: 10.1039/c8an00790j] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Reported herein is the finding that photon scattering and absorption differ drastically in inducing the sample IFE in SSF, RS2, and the PRS2 spectra measurements.
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Affiliation(s)
- Joanna Xiuzhu Xu
- Department of Chemistry
- Mississippi State University
- Mississippi State
- USA
| | | | | | - Dongmao Zhang
- Department of Chemistry
- Mississippi State University
- Mississippi State
- USA
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34
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Zhou J, Lan Y, Lei F, Zhao Y, Lu J, Huang Q, Li P, Li H, Zhang J. Synthesis, surface properties and temperature dependence of phase separation of DSPE chains in ethanol solutions. NEW J CHEM 2018. [DOI: 10.1039/c8nj01781f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The surface properties, phase separation processes and kinetics of a DSPE/ethanol solution were investigated.
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Affiliation(s)
- Juying Zhou
- School of Chemistry and Chemical Engineering
- Guangxi University for Nationalities
- Nanning 530006
- P. R. China
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products
| | - Yanjiao Lan
- School of Chemistry and Chemical Engineering
- Guangxi University for Nationalities
- Nanning 530006
- P. R. China
| | - Fuhou Lei
- School of Chemistry and Chemical Engineering
- Guangxi University for Nationalities
- Nanning 530006
- P. R. China
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products
| | - Yanzhi Zhao
- School of Chemistry and Chemical Engineering
- Guangxi University for Nationalities
- Nanning 530006
- P. R. China
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products
| | - Jianfang Lu
- School of Chemistry and Chemical Engineering
- Guangxi University for Nationalities
- Nanning 530006
- P. R. China
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products
| | - Qin Huang
- School of Chemistry and Chemical Engineering
- Guangxi University for Nationalities
- Nanning 530006
- P. R. China
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products
| | - Pengfei Li
- School of Chemistry and Chemical Engineering
- Guangxi University for Nationalities
- Nanning 530006
- P. R. China
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products
| | - Hao Li
- School of Chemistry and Chemical Engineering
- Guangxi University for Nationalities
- Nanning 530006
- P. R. China
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products
| | - Jinyan Zhang
- School of Chemistry and Chemical Engineering
- Guangxi University for Nationalities
- Nanning 530006
- P. R. China
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35
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Athukorale SA, Zhou Y, Zou S, Zhang D. Determining the Liquid Light Scattering Cross Section and Depolarization Spectra Using Polarized Resonance Synchronous Spectroscopy. Anal Chem 2017; 89:12705-12712. [PMID: 29115124 DOI: 10.1021/acs.analchem.7b02721] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Rayleigh scattering is a universal material property because all materials have nonzero polarizability. Reliable quantification of the material light scattering cross section in the liquid phase and its depolarization spectra is, however, challenging due to a host of sample and instrument issues. Using the recently developed polarized resonance synchronous spectroscopic method, we reported the light scattering cross section and depolarization spectra measured for a total of 29 liquids including water, methanol, ethanol, 1-propanol, 1-butanol, dimethylformamide, carbon disulfide, dimethyl sulfoxide, hexane and two hexane isomers (3-methylpentane and 2,3-dimethylbutane), tetrahydrofuran, cyclohexane, acetonitrile, pyridine, chloromethanes including di-, tri, tetrachloromethane, acetone, benzene and eight benzene derivatives (toluene, fluorobenzene, 1,2-, 1,3-, and 1,4-difluorobenzene, chlorobenzene, 1,2- and 1,3-dichlorobenzene, and nitrobenzene). The solvent light scattering depolarization is wavelength-independent for the model solvents, and it varies from 0.023 ± 0.011 for CCl4 to 0.619 ± 0.022 for nitrobenzene. The light scattering cross-section spectra can be approximated with the function of σ(λ) = αλ-4 with the α value varying from 7.2 ± 0.2 × 10-45 cm6 for water to a maximum of 8.5 ± 0.6 × 10-43 cm6 for nitrobenzene. Structural isomerization has no significant effect on either the depolarization or the scattering cross sections for both hexanes and difluorobenzene isomers. This work represents the most comprehensive experimental study on liquid light scattering features. The insight from this work should be important for understanding the correlation between the material structure and optical properties. The described method can be readily implemented by researchers with access to conventional spectrofluorometers equipped with excitation and detection polarizers.
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Affiliation(s)
- Sumudu A Athukorale
- Department of Chemistry, Mississippi State University , Mississippi State, Mississippi 39762, United States
| | - Yadong Zhou
- Department of Chemistry, University of Central Florida , Orlando, Florida 32816, United States
| | - Shengli Zou
- Department of Chemistry, University of Central Florida , Orlando, Florida 32816, United States
| | - Dongmao Zhang
- Department of Chemistry, Mississippi State University , Mississippi State, Mississippi 39762, United States.,Department of Chemistry, Xihua University , Chengdu, 610039 China
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36
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Siriwardana K, Nettles CB, Vithanage BC, Zhou Y, Zou S, Zhang D. On-Resonance Fluorescence, Resonance Rayleigh Scattering, and Ratiometric Resonance Synchronous Spectroscopy of Molecular- and Quantum Dot-Fluorophores. Anal Chem 2016; 88:9199-206. [DOI: 10.1021/acs.analchem.6b02420] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Kumudu Siriwardana
- Department
of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Charles B. Nettles
- Department
of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Buddhini C.N. Vithanage
- Department
of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Yadong Zhou
- Department
of Chemistry, University of Central Florida, Orlando, Florida 32816, United States
| | - Shengli Zou
- Department
of Chemistry, University of Central Florida, Orlando, Florida 32816, United States
| | - Dongmao Zhang
- Department
of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
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37
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Nettles CB, Zhou Y, Zou S, Zhang D. UV–Vis Ratiometric Resonance Synchronous Spectroscopy for Determination of Nanoparticle and Molecular Optical Cross Sections. Anal Chem 2016; 88:2891-8. [DOI: 10.1021/acs.analchem.5b04722] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Charles B. Nettles
- Department
of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Yadong Zhou
- Department
of Chemistry, University of Central Florida, Orlando, Florida 32816, United States
| | - Shengli Zou
- Department
of Chemistry, University of Central Florida, Orlando, Florida 32816, United States
| | - Dongmao Zhang
- Department
of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
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38
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Jayme CC, Calori IR, Tedesco AC. Spectroscopic analysis of aluminum chloride phthalocyanine in binary water/ethanol systems for the design of a new drug delivery system for photodynamic therapy cancer treatment. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 153:178-183. [PMID: 26311478 DOI: 10.1016/j.saa.2015.08.027] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Revised: 07/17/2015] [Accepted: 08/12/2015] [Indexed: 06/04/2023]
Abstract
This study evaluated the behavior of aluminum chloride phthalocyanine in a binary water/ethanol mixture using electronic absorption spectroscopy and static and time-resolved fluorescence spectroscopy. The electronic absorption spectra, resonance light scattering and fluorescence quenching of aluminum chloride phthalocyanine in water/ethanol mixtures were studied at several concentrations. The electronic absorption spectra and fluorescence quenching changed significantly at approximately 50% water (v/v). Below 50% water, the dimerization constant values were negative (-2609.2 M(-1) and -506.5 M(-1) at 30% and 40% of water, respectively), indicating that the formation of aggregates under these conditions is not favored. However, at 50% water, the dimerization constant value was estimated to be 559.7 M(-1), which indicates the presence of dimers. Above 60% water, the aggregation process was responsible for the balance between large complexes (such as trimers, tetramers or oligomers) formed in the medium under these conditions. The appearance of new absorption bands at 387 nm and 802 nm and their bathochromic shift relative to the monomer bands suggested that some J-type aggregates form. These results are relevant to understanding the behavior and use of aluminum chloride phthalocyanine in the design of new drug delivery systems for clinical application in photodynamic therapy as a new approach to treat skin cancer.
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Affiliation(s)
- Cristiano Ceron Jayme
- Departamento de Química, Laboratório de Fotobiologia e Fotomedicina, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, 14040-901 Ribeirão Preto, SP, Brazil.
| | - Italo Rodrigo Calori
- Departamento de Química, Laboratório de Fotobiologia e Fotomedicina, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, 14040-901 Ribeirão Preto, SP, Brazil.
| | - Antonio Claudio Tedesco
- Departamento de Química, Laboratório de Fotobiologia e Fotomedicina, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, 14040-901 Ribeirão Preto, SP, Brazil.
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39
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Arteaga O, Canillas A, El-Hachemi Z, Crusats J, Ribó JM. Structure vs. excitonic transitions in self-assembled porphyrin nanotubes and their effect on light absorption and scattering. NANOSCALE 2015; 7:20435-20441. [PMID: 26584333 DOI: 10.1039/c5nr05633k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The optical properties of diprotonated meso-tetrakis(4-sulphonatophenyl)porphyrin (TPPS(4)) J-aggregates of elongated thin particles (nanotubes in solution and ribbons when deposited on solid interfaces) are studied by different polarimetric techniques. The selective light extinction in these structures, which depends on the alignment of the nanoparticle with respect to the polarization of light, is contributed by excitonic absorption bands and by resonance light scattering. The optical response as a function of the polarization of light is complex because, although the quasi-one-dimensional structure confines the local fields along the nanotube axis, there are two orthogonal excitonic bands, of H- and J-character, that can work in favor of or against the field confinement. Results suggest that resonance light scattering is the dominant effect in solid state preparations, i.e. in collective groups (bundles) of ribbons but in diluted solutions, i.e. with isolated nanotubes, the absorption at the excitonic transitions remains dominant and linear dichroism spectra can be a direct probe of the exciton orientations. Therefore, by analyzing scattering and absorption data we can determine the alignment of the excitonic bands within the nanoparticle, i.e. of the orientation of the basic 2D porphyrin architecture in the nanoparticle. This is a necessary first step for understanding the directions of energy transport, charge polarization and non-linear optical properties in these materials.
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Affiliation(s)
- Oriol Arteaga
- Dep. Física Aplicada i Òptica, Institute of Nanoscience and Nanotechnology (IN2UB), C/ Martí i Franqués 1, Universitat de Barcelona, 08028, Barcelona, Catalonia, Spain.
| | - Adolf Canillas
- Dep. Física Aplicada i Òptica, Institute of Nanoscience and Nanotechnology (IN2UB), C/ Martí i Franqués 1, Universitat de Barcelona, 08028, Barcelona, Catalonia, Spain.
| | - Zoubir El-Hachemi
- Dep. Química Orgànica, Institute of Cosmos Science (IEEC-UB), C/ Martí i Franquès, Universitat de Barcelona, 08028, Barcelona, Catalonia, Spain
| | - Joaquim Crusats
- Dep. Química Orgànica, Institute of Cosmos Science (IEEC-UB), C/ Martí i Franquès, Universitat de Barcelona, 08028, Barcelona, Catalonia, Spain
| | - Josep M Ribó
- Dep. Química Orgànica, Institute of Cosmos Science (IEEC-UB), C/ Martí i Franquès, Universitat de Barcelona, 08028, Barcelona, Catalonia, Spain
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Wang Y, Bi S, Zhou H, Zhao T. Resonance light scattering spectroscopy of procyanidin-CPB-DNA ternary system and its potential application. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 146:255-260. [PMID: 25819313 DOI: 10.1016/j.saa.2015.03.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Revised: 12/03/2014] [Accepted: 03/01/2015] [Indexed: 06/04/2023]
Abstract
A new method for the determination of calf thymus DNA at nanogram level was proposed based on the enhanced resonance light scattering (RLS) signals of DNA in the presence of procyanidin and cetylpyridinium bromide dihydrate (CPB). Under the experimental conditions, the RLS intensity of DNA at 291.0 nm was greatly enhanced by procyanidin-CPB at pH 7.0. There was a good linear relationship (r=0.9993) between the enhanced RLS intensity (ΔI(RLS)) and DNA concentration of 0.0084-3.36 μg mL(-1). The limit of detection (LOD) was 2.27 ng mL(-1) (3S0/S). Three synthetic DNA samples were measured with satisfactory, and the recovery was 102.3-107.2%.
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Affiliation(s)
- Yu Wang
- College of Chemistry, Changchun Normal University, Changchun 130032, PR China
| | - Shuyun Bi
- College of Chemistry, Changchun Normal University, Changchun 130032, PR China.
| | - Huifeng Zhou
- College of Chemistry, Changchun Normal University, Changchun 130032, PR China
| | - Tingting Zhao
- College of Chemistry, Changchun Normal University, Changchun 130032, PR China
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41
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Song H, Chen C, Zhao S, Ge F, Liu D, Shi D, Zhang T. Interaction of gallic acid with trypsin analyzed by spectroscopy. J Food Drug Anal 2015; 23:234-242. [PMID: 28911378 PMCID: PMC9351775 DOI: 10.1016/j.jfda.2014.09.001] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Revised: 09/03/2014] [Accepted: 09/30/2014] [Indexed: 11/18/2022] Open
Abstract
The interactions between trypsin and gallic acid (GA) were investigated by means of fluorescence spectroscopy, UV-vis absorption spectroscopy, resonance light scattering (RLS) spectroscopy, synchronous fluorescence spectroscopy, and enzymatic inhibition assay. It was found that GA can cause the fluorescence quenching of trypsin during the process of formation of GA-trypsin complex, resulting in inhibition of trypsin activity (IC50 = 3.9 × 10−6 mol/L). The fluorescence spectroscopic data showed that the quenching efficiency can reach about 80%. The binding constants were 1.9371 × 104 L/mol, 1.8192 × 104 L/mol, and 1.7465 × 104 L/mol at three temperatures, respectively. The thermodynamic parameters revealed that hydrogen bonds, van der Waals, hydrophobic, and electrostatic interactions were involved in the binding process of GA to trypsin. Molecular modeling studies illustrated a specific display of binding information and explained most of the experiment phenomena. The microenvironments of tryptophan and tyrosine residue in trypsin were changed by the GA. Results indicated that GA was a strong quencher and inhibitor of trypsin.
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Affiliation(s)
- Hao Song
- Faculty of Life Science, Kunming University of Science and Technology, Kunming 650500, People's Republic of China
| | - Chaoyin Chen
- Faculty of Life Science, Kunming University of Science and Technology, Kunming 650500, People's Republic of China.
| | - Shenglan Zhao
- Faculty of Traditional Chinese Medicine, Yunnan University of Traditional Chinese Medicine, Kunming 650200, People's Republic of China.
| | - Feng Ge
- Faculty of Life Science, Kunming University of Science and Technology, Kunming 650500, People's Republic of China
| | - Diqiu Liu
- Faculty of Life Science, Kunming University of Science and Technology, Kunming 650500, People's Republic of China
| | - Dandan Shi
- Faculty of Life Science, Kunming University of Science and Technology, Kunming 650500, People's Republic of China
| | - Tiancai Zhang
- Faculty of Life Science, Kunming University of Science and Technology, Kunming 650500, People's Republic of China
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42
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Gangemi CMA, Randazzo R, Fragalà ME, Tomaselli GA, Ballistreri FP, Pappalardo A, Toscano RM, Trusso Sfrazzetto G, Purrello R, D'Urso A. Hierarchically controlled protonation/aggregation of a porphyrin–spermine derivative. NEW J CHEM 2015. [DOI: 10.1039/c5nj01264c] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new porphyrin–spermine derivative self-assembles under hierarchical control, allowing the desired aggregation state of the system to be obtained.
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Affiliation(s)
| | - Rosalba Randazzo
- Department of Chemical Science
- University of Catania
- 95125 Catania
- Italy
| | | | | | | | - Andrea Pappalardo
- Department of Chemical Science
- University of Catania
- 95125 Catania
- Italy
| | | | | | - Roberto Purrello
- Department of Chemical Science
- University of Catania
- 95125 Catania
- Italy
| | - Alessandro D'Urso
- Department of Chemical Science
- University of Catania
- 95125 Catania
- Italy
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43
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Liu BJ, Lin KQ, Hu S, Wang X, Lei ZC, Lin HX, Ren B. Extraction of absorption and scattering contribution of metallic nanoparticles toward rational synthesis and application. Anal Chem 2014; 87:1058-65. [PMID: 25494875 DOI: 10.1021/ac503612b] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Noble metal nanoparticles have unique localized surface plasmon resonance (LSPR), leading to their strong absorption and scattering in the visible light range. Up to date, the common practice in the selection of nanoparticles for a specific application is still based on the measured extinction spectra. This practice may be erroneous, because the extinction spectra contain both absorption and scattering contribution that may play different roles in different applications. It would be highly desirable to develop an efficient way to obtain the absorption and scattering spectra simultaneously. Herein, we develop a method to use the experimentally measured extinction and scattering signals to extract the absorption and scattering spectra that is in excellent agreement with that simulated by discrete dipole approximation (DDA). The heating curve measurement on the three types of gold nanorods, with almost the same extinction spectra but different absorption and scattering contribution, convincingly reveals an excellent correlation between the heating effect and the absorption strength rather than the extinction strength. The result demonstrates the importance to obtain the scattering and absorption spectra to predict the potential application for different types of nanoparticles, which in turn will screen efficiently nanoparticles for a specific application.
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Affiliation(s)
- Bi-Ju Liu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, ‡The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and §Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005, China
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44
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Zyryanov GV, Kopchuk DS, Kovalev IS, Nosova EV, Rusinov VL, Chupakhin ON. Chemosensors for detection of nitroaromatic compounds (explosives). RUSSIAN CHEMICAL REVIEWS 2014. [DOI: 10.1070/rc2014v083n09abeh004467] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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45
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Numata M, Sakai RI. Kinetically Controllable Supramolecular Polymerization through Synchronized Activation of Monomers. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2014. [DOI: 10.1246/bcsj.20140117] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Munenori Numata
- Department of Biomolecular Chemistry, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University
| | - Ryo-ichiro Sakai
- Department of Biomolecular Chemistry, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University
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46
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Choi JK, Reed A, Balaz M. Chiroptical properties, binding affinity, and photostability of a conjugated zinc porphyrin dimer complexed with left-handed Z-DNA and right-handed B-DNA. Dalton Trans 2014; 43:563-7. [PMID: 24129690 DOI: 10.1039/c3dt52210e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have studied the UV-vis absorption and chiroptical properties, binding affinity and photostability of a conjugated positively charged butadiyne-linked Zn(ii) porphyrin dimer bound to DNA sequence poly(dG-dC)2. Right-handed B-DNA, spermine-induced Z-DNA and Co(iii)-induced Z-DNA have been explored. Resonance light scattering (RLS) spectra showed formation of porphyrin aggregates in the presence of all DNA forms with the largest aggregates formed with B-DNA. The porphyrin dimer gave rise to induced bisignate circular dichroism (CD) signals in the presence of the left-handed Z-DNA conformations. On the other hand, the dimer stayed nearly chiroptically silent when complexed with the B-form of poly(dG-dC)2. Our results indicated that the conjugated Zn(ii) porphyrin dimer can be used as a sensor for the chiroptical detection of Z-DNA in the visible (400-500 nm) and near-infrared region of the electromagnetic spectrum (700-800 nm). The helicity of DNA had little effect on the dimer binding affinities. The photostability of the porphyrin dimer complexed with any form of DNA was higher than that of the free molecule. The porphyrin dimer bound to Z-DNA exhibited slower photobleaching than the B-DNA dimer complex.
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Affiliation(s)
- Jung Kyu Choi
- Department of Chemistry, University of Wyoming, Laramie, WY 82071, USA.
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47
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Lorecchio C, Venanzi M, Mazzuca C, Lettieri R, Palleschi A, Nguyen Thi TH, Cardová L, Drasar P, Monti D. Tuning the chiroptical and morphological properties of steroidal-porphyrin aggregates: a mechanistic, structural, and MM investigation. Org Biomol Chem 2014; 12:3956-3963. [PMID: 24805210 DOI: 10.1039/c4ob00134f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The aggregation of a steroid-functionalised porphyrin derivative occurs with the formation of J-type chiral species. Spectroscopic and SEM studies indicate that the initial concentration of the macrocycle strongly influences the morphology of the final mesoscopic structures, as a consequence of a change in the mechanistic course of the self-assembly process. Fibrillar structures are obtained at low porphyrin concentration, whereas aggregates of globular shapes are formed on increasing the substrate concentration. Molecular mechanics investigations gave insights into the intimate nature of the driving forces that govern the self-assembly process, pointing out the importance of ring distortion, of intramolecular steroidal OH-π hydrogen bonds, as well as dispersion forces among the tetrapyrrolic platforms.
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Affiliation(s)
- Chiara Lorecchio
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata, Via della Ricerca Scientifica 1, 00133, Rome, Italy.
| | - Mariano Venanzi
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata, Via della Ricerca Scientifica 1, 00133, Rome, Italy.
| | - Claudia Mazzuca
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata, Via della Ricerca Scientifica 1, 00133, Rome, Italy.
| | - Raffaella Lettieri
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata, Via della Ricerca Scientifica 1, 00133, Rome, Italy.
| | - Antonio Palleschi
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata, Via della Ricerca Scientifica 1, 00133, Rome, Italy.
| | - Thu Huong Nguyen Thi
- Department of Chemistry, Faculty of Science, Purkynje University, Ústí nad Labem, Ceské mládeze 8, 400 96, Ústí nad Labem, Czech Republic
| | - Lenka Cardová
- Department of Natural Compounds Chemistry, Institute of Chemical Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Pavel Drasar
- Department of Natural Compounds Chemistry, Institute of Chemical Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Donato Monti
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata, Via della Ricerca Scientifica 1, 00133, Rome, Italy.
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48
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Navarro JRG, Werts MHV. Resonant light scattering spectroscopy of gold, silver and gold-silver alloy nanoparticles and optical detection in microfluidic channels. Analyst 2014; 138:583-92. [PMID: 23172138 DOI: 10.1039/c2an36135c] [Citation(s) in RCA: 127] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Dark field resonant light scattering by gold and silver nanoparticles enables the detection and spectroscopy of such particles with high sensitivity, down to the single-particle level, and can be used to implement miniaturised optical detection schemes for chemical and biological analysis. Here, we present a straightforward optical spectroscopic methodology for the quantitative spectrometric study of resonant light scattering (RLS) by nanoparticles. RLS spectroscopy is complementary to UV-visible absorbance measurements, and we apply it to the characterisation and comparison of different types of gold, silver and gold-silver alloy nanoparticles. The potential of gold and silver particles as alternatives for fluorescent probes in certain applications is discussed. RLS spectroscopy is shown to be useful for studying analyte-induced gold nanoparticle assembly and nanoparticle chemistry, which can induce radical changes in the plasmonic resonances responsible for the strong light scattering. Furthermore, the feasibility of dark field RLS detection and quantitation of metal nanoparticles in microfluidic volumes is demonstrated, opening interesting possibilities for the further development of microfluidic detection schemes.
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Affiliation(s)
- Julien R G Navarro
- Ecole Normale Supérieure de Cachan-Bretagne, SATIE (UMR 8029), Campus de Ker Lann, F-35170 Bruz, France
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Romeo A, Castriciano MA, Occhiuto I, Zagami R, Pasternack RF, Scolaro LM. Kinetic control of chirality in porphyrin J-aggregates. J Am Chem Soc 2013; 136:40-3. [PMID: 24341960 DOI: 10.1021/ja410514k] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Detailed kinetic investigations demonstrate the fundamental role of kinetic parameters in the expression and transmission of chirality in supramolecular systems. The rate of the aggregation process leading to the formation of J-aggregates strongly affects the size of these nanoassemblies and the chiral induction.
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Affiliation(s)
- Andrea Romeo
- Istituto per lo Studio dei Materiali Nanostrutturati ISMN-CNR and †Dipartimento di Scienze Chimiche, University of Messina and CIRCMSB , 98166 Messina, Italy
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50
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Vaz Serra V, Andrade SM, Silva EMP, Silva AMS, Neves MGPMS, Costa SMB. Structural effects of the β-vinyl linker in pyridinium porphyrins: spectroscopic studies in organic solvents and AOT reverse micelles. J Phys Chem B 2013; 117:15023-32. [PMID: 24175940 DOI: 10.1021/jp4076993] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two isomeric β-vinylpyridinium porphyrins, 2-[2-(2-methylpyridinium)vinyl]-5,10,15,20-tetraphenylporphyrin (1, ortho isomer) and 2-[2-(4-methylpyridinium)vinyl]-5,10,15,20-tetraphenylporphyrin (2, para isomer), which have shown different photodynamic behavior were investigated in organic solvents and sodium 1,4-bis(2-ethylhexyl)sulfosuccinate (AOT) reverse micelles. In organic systems, the absorption spectra present a red-shifted band that is more intense in the para isomer, in addition to the usual Soret band. This new band presents interesting solvatochromic effects which obey the multiparametric Kamlet-Taft equation. In AOT reverse micelles, the ortho isomer exhibits a strong dependence with the parameter ω0 = [H2O]/[AOT] which indicates that the molecule resides at the interface toward the organic phase. By contrast, no evidence was detected for the encapsulation of para isomer 2 in AOT reverse micelles. The hypothesis of two ground state isomers with different contributions of trans and quinoid structures is advanced on the basis of the overall data collected from electronic absorption, steady-state, and transient-state fluorescence emission. A charge transfer state in which an electron is fully transferred from the porphyrin to the pyridinium moiety is associated to a quinoid structure in isomer 2. The trans/quinoid relative proportions may be accounted for by the orientation of the ortho-/para-pyridinium isomers relatively to the porphyrin core.
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Affiliation(s)
- Vanda Vaz Serra
- Centro de Química Estrutural, Complexo I, Instituto Superior Técnico, Universidade Técnica de Lisboa , Av. Rovisco Pais, 1049-001 Lisboa, Portugal
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