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Mansoor F, Ju H, Saeed M, Kanwal S. Facile synthesis of gold nanocages with silver nanocubes templates dual metal effects enabled SERS imaging and catalytic reduction. RSC Adv 2023; 13:31366-31374. [PMID: 37901276 PMCID: PMC10603383 DOI: 10.1039/d3ra06344e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 10/17/2023] [Indexed: 10/31/2023] Open
Abstract
Silver (Ag) nanomaterials featuring a cubic shape particularly represent supreme class of advance nanomaterials. This work explored a new precursor and its effect on morphological features of silver (Ag) nanocubes (NCs) serving as sacrificial templates for facile synthesis of gold NCs. The AgNCs were initially prepared utilizing sodium thiosulphate (Na2S2O3) as relatively stable S2- producing species along with a soft etchant source KCl. The effects of different potassium halides were evaluated to grasp control over seed mediated growth of Ag nanocubes. Taking the advantages of dual metallic properties, Ag@4MBA@AuNCs nanostructure was synthesized using 4-mercaptobenzoic acid (4MBA) as a Raman reporter molecule. This nanostructure showed 1010-times enhancement in surface enhanced Raman scattering (SERS) signal, leading to a highly sensitive imaging probe for the detection of even three breast cancer cells (MCF-7 cells) in vitro. Subsequently, the oxidative nanopeeling well accompanied by incorporation of Au/Ag alloy nanoparticles on AuNCs corona assembly was achieved, which facilitated the catalytic reduction of toxic nitrophenol to eco-friendly aminophenol. Such sophisticated and engineered nanoassemblies possess broad applications in bioanalysis.
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Affiliation(s)
- Farukh Mansoor
- Key Laboratory of Magnetic Materials and Devices & Division of Functional Materials and Nanodevices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences Ningbo 315201 P. R. China
- Department of Chemistry, Khwaja Fareed University of Engineering and Information Technology Abu Dhabi Road Rahim Yar Khan Pakistan
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Sciences Department of Chemistry, Nanjing University Nanjing 210023 China
| | - Madiha Saeed
- Key Laboratory of Magnetic Materials and Devices & Division of Functional Materials and Nanodevices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences Ningbo 315201 P. R. China
- Interdisciplinary Research Centre in Biomedical Materials, COMSATS University, Islamabad, Lahore Campus Lahore Pakistan
| | - Shamsa Kanwal
- Department of Chemistry, Khwaja Fareed University of Engineering and Information Technology Abu Dhabi Road Rahim Yar Khan Pakistan
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2
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Ahn B, Chen M, Mazzotti M. Online Monitoring of the Concentrations of Amorphous and Crystalline Mesoscopic Species Present in Solution. CRYSTAL GROWTH & DESIGN 2022; 22:5071-5080. [PMID: 35942122 PMCID: PMC9354028 DOI: 10.1021/acs.cgd.2c00577] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Revised: 06/30/2022] [Indexed: 06/01/2023]
Abstract
Despite the growing evidence for the existence of amorphous mesoscopic species in a solution and their crucial roles in crystallization, there has been the lack of a suitable method to measure the time-resolved concentrations of amorphous and crystalline mesospecies in a lab-scale stirred reactor. This has limited experimental investigations to understand the kinetics of amorphous and crystalline mesospecies formation in stirred solutions and made it challenging to measure the crystal nucleation rate directly. Here, we used depolarized light sheet microscopy to achieve time-resolved measurements of amorphous and crystalline mesospecies concentrations in solutions at varying temperatures. After demonstrating that the concentration measurement method is reasonably accurate, precise, and sensitive, we utilized this method to examine mesospecies formation both in a mixture of two miscible liquids and in an undersaturated solution of dl-valine, thus revealing the importance of a temperature change in the formation of metastable and amorphous mesospecies as well as the reproducibility of the measurements. Moreover, we used the presented method to monitor both mesospecies formation and crystal nucleation in dl-valine solutions at four different levels of supersaturation, while achieving the direct measurement of the crystal nucleation rates in stirred solutions. Our results show that, as expected, the inherent variability in nucleation originating from its stochastic nature reduces with increasing supersaturation, and the dependence of the measured nucleation rate on supersaturation is in reasonable agreement with that predicted by the classical nucleation theory.
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3
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Shimizu M, Shirota H. Intermolecular Dynamics of Positively and Negatively Charged Aromatics and Their Isoelectronic Neutral Analogs in Aqueous Solutions. J Phys Chem B 2022; 126:4309-4323. [PMID: 35658126 DOI: 10.1021/acs.jpcb.2c01517] [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
In this study, we investigated the temperature dependence of intermolecular vibrations and orientational dynamics in the aqueous solutions of imidazole hydrochloride, imidazole, sodium triazolide, and triazole using femtosecond Raman-induced Kerr effect spectroscopy (fs-RIKES) and steady-state Raman spectroscopy. The difference low-frequency Raman spectra under 250 cm-1 of the aqueous solutions relative to the neat water showed that the spectral shoulder in the high-frequency region at 60-100 cm-1, assigned to the libration of an aromatic ring, was higher in frequency for the imidazolium cation but lower for the triazolide anion than those of the respective neutral aromatics. The results of the ab initio quantum chemistry calculations of the clusters of the aromatics and water molecule(s) were consistent with the experimental spectra of the aqueous solutions. Further, the results of the temperature-dependent experiments showed that the signal intensity in the low-frequency region below 50 cm-1 increased for all solutions with an increase in temperature. In contrast, the spectral density in the high-frequency region above 80 cm-1 exhibited almost no shift for the 1.0 M solutions, while a significant red shift was observed for the 5.0 M solutions. In addition, the temperature-dependent densities, viscosities, and surface tensions were characterized for the aqueous aromatic solutions from 293 to 353 K.
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Affiliation(s)
- Masako Shimizu
- Department of Chemistry, Chiba University 1-33 Yayoi, Inage-ku, Chiba 263-8522, Japan
| | - Hideaki Shirota
- Department of Chemistry, Chiba University 1-33 Yayoi, Inage-ku, Chiba 263-8522, Japan
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4
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Liao Z, Wynne K. A Metastable Amorphous Intermediate Is Responsible for Laser-Induced Nucleation of Glycine. J Am Chem Soc 2022; 144:6727-6733. [PMID: 35384650 DOI: 10.1021/jacs.1c11154] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Laser-induced crystal nucleation through optical tweezing, and in particular polymorph selection through laser polarization, promises unprecedented control over crystallization. However, in the absence of a nearby liquid-liquid critical point or miscibility gap, the origin of the required mesoscale clusters remains unclear. A number of recent studies of so-called nonclassical nucleation have suggested the presence of large amorphous clusters. Here, we show that supersaturated aqueous glycine solutions form metastable intermediate particles that are off the direct path to crystal nucleation. Laser-induced crystal nucleation only occurs when the laser "activates" one of these particles. In situ low-frequency Raman spectroscopy is used to demonstrate their amorphous or partially ordered character and transformation to various crystal polymorphs. The requirement for solution aging in many previously reported laser-induced crystal nucleation experiments strongly suggests that the presence of amorphous intermediates is a general requirement.
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Affiliation(s)
- Zhiyu Liao
- School of Chemistry, University of Glasgow, Glasgow G12 8QQ, U.K
| | - Klaas Wynne
- School of Chemistry, University of Glasgow, Glasgow G12 8QQ, U.K
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5
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Rampal N, Wang HW, Biriukov D, Brady AB, Neuefeind JC, Předota M, Stack AG. Local molecular environment drives speciation and reactivity of ion complexes in concentrated salt solution. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116898] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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6
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Lane PD, Reichenbach J, Farrell AJ, Ramakers LAI, Adamczyk K, Hunt NT, Wynne K. Experimental observation of nanophase segregation in aqueous salt solutions around the predicted liquid-liquid transition in water. Phys Chem Chem Phys 2020; 22:9438-9447. [PMID: 32314750 DOI: 10.1039/c9cp06082k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The liquid-liquid transition in supercooled liquid water, predicted to occur around 220 K, is controversial due to the difficulty of studying it caused by competition from ice crystallization (the so-called "no man's land"). In aqueous solutions, it has been predicted to give rise to phase separation on a nanometer scale between a solute-rich high-density phase and a water-rich low-density phase. Here we report direct experimental evidence for the formation of a nanosegregated phase in eutectic aqueous solutions of LiCl and LiSCN where the presence of crystalline water can be experimentally excluded. Femtosecond infrared and Raman spectroscopies are used to determine the temperature-dependent structuring of water, the solvation of the SCN- anion, and the size of the phase segregated domains.
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Affiliation(s)
- Paul D Lane
- Department of Physics, SUPA, University of Strathclyde, Glasgow, UK.
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7
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Walton F, Bolling J, Farrell A, MacEwen J, Syme CD, Jiménez MG, Senn HM, Wilson C, Cinque G, Wynne K. Polyamorphism Mirrors Polymorphism in the Liquid-Liquid Transition of a Molecular Liquid. J Am Chem Soc 2020; 142:7591-7597. [PMID: 32249557 PMCID: PMC7181258 DOI: 10.1021/jacs.0c01712] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
![]()
Liquid–liquid
transitions between two amorphous phases in
a single-component liquid have courted controversy. All known examples
of liquid–liquid transitions in molecular liquids have been
observed in the supercooled state, suggesting an intimate connection
with vitrification and locally favored structures inhibiting crystallization.
However, there is precious little information about the local molecular
packing in supercooled liquids, meaning that the order parameter of
the transition is still unknown. Here, we investigate the liquid–liquid
transition in triphenyl phosphite and show that it is caused by the
competition between liquid structures that mirror two crystal polymorphs.
The liquid–liquid transition is found to be between a geometrically
frustrated liquid and a dynamically frustrated glass. These results
indicate a general link between polymorphism and polyamorphism and
will lead to a much greater understanding of the physical basis of
liquid–liquid transitions and allow the systematic discovery
of other examples.
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Affiliation(s)
- Finlay Walton
- School of Chemistry, University of Glasgow, Glasgow G12 8QQ, U.K
| | - John Bolling
- School of Chemistry, University of Glasgow, Glasgow G12 8QQ, U.K
| | - Andrew Farrell
- School of Chemistry, University of Glasgow, Glasgow G12 8QQ, U.K
| | - Jamie MacEwen
- School of Chemistry, University of Glasgow, Glasgow G12 8QQ, U.K
| | | | | | - Hans M Senn
- School of Chemistry, University of Glasgow, Glasgow G12 8QQ, U.K
| | - Claire Wilson
- School of Chemistry, University of Glasgow, Glasgow G12 8QQ, U.K
| | - Gianfelice Cinque
- Diamond Light Source, Harwell Science and Innovation Campus, Oxfordshire OX11 0DE, U.K
| | - Klaas Wynne
- School of Chemistry, University of Glasgow, Glasgow G12 8QQ, U.K
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Handwerk DR, Shipman PD, Özkar S, Finke RG. Dust Effects on Ir(0) n Nanoparticle Formation Nucleation and Growth Kinetics and Particle Size-Distributions: Analysis by and Insights from Mechanism-Enabled Population Balance Modeling. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:1496-1506. [PMID: 32011887 DOI: 10.1021/acs.langmuir.9b03193] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The effects of microfiltration removal of filterable dust on nanoparticle formation kinetics and particle-size distribution, in a polyoxometalate polyanion (P2W15Nb3O629-)-stabilized Ir(0)n nanoparticle formation system, are analyzed by the newly developed method of Mechanism-Enabled Population Balance Modeling (ME-PBM). The [(Bu4N)5Na3(1,5-COD)Ir·P2W15Nb3O62] precatalyst system produces on average Ir(0)∼200 nanoparticles of 1.74 ± 0.33 nm and hence a particle-size distribution (PSD) of ±19% dispersion when the precatalyst is reduced under H2 in unfiltered propylene carbonate solvent. But if the precatalyst is reduced in microfiltered solvent and microfiltered reagent solutions (where the filtered solvent is then also used to rinse dust from the glassware), then larger Ir(0)∼300 1.96 ± 0.16 nm nanoparticles are produced with a remarkable, 2.4-fold lowered ±8% dispersion. The results and effects of the microfiltration reduction of dust are analyzed by the newly developed method of ME-PBM. More specifically, the studies reported herein address eight outstanding questions that are listed in the Introduction. Those questions include: how easy or difficult it is to fit PSD data? What is the ability of the recently discovered alternative termolecular nucleation and two size-dependent growth steps mechanism to account for the effects of dust on the PSD? What types and amount of PSD kinetics data are needed to deconvolute the PSD into the parameters of the ME-PBM? What is the reliability of the resulting rate constants? Additional questions addressed include: if the ME-PBM results offer insights into the remarkable 2.4-fold narrowing of the PSD post simple microfiltration lowering of the dust, and if the results are likely to be more general? The Summary and Conclusions section lists nine specific insights that include comments on needed future studies.
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Affiliation(s)
- Derek R Handwerk
- Department of Mathematics , Colorado State University , Fort Collins , Colorado 80523-1874 , United States
| | | | - Saim Özkar
- Department of Chemistry , Middle East Technical University , 06800 Ankara , Turkey
| | - Richard G Finke
- Department of Chemistry , Colorado State University , Fort Collins , Colorado 80523 , United States
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Wang HW, Graham TR, Mamontov E, Page K, Stack AG, Pearce CI. Countercations Control Local Specific Bonding Interactions and Nucleation Mechanisms in Concentrated Water-in-Salt Solutions. J Phys Chem Lett 2019; 10:3318-3325. [PMID: 31145618 DOI: 10.1021/acs.jpclett.9b01416] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
One of the continuing challenges presented in salt solutions is understanding ion association reactions driving dynamic demixing from solvation, complexation, and solute clustering. The problems understanding this phenomenon are exacerbated in the highly concentrated water-in-salt solutions, where the deficiency of water leads to a dramatic retardation of water solvent and formation of extended solvent-solute clustering networks. By probing microscopic dynamics of water and prenucleation clusters using quasi-elastic neutron scattering and proton nuclear magnetic resonance spectroscopy, we observed contrasting mechanistic specifics of ion-water mobilities in highly concentrated Na+- versus K+-based aluminate solutions (diffusion coefficients of 0.2 vs 2.6 × 10-10 m2 s-1 at 293 K, respectively). The magnitude of the differences is far beyond countercations acting as simple innocent charge-balancing species or water solvents functioning as a simple medium for ion diffusion. The distinct crystallization mechanisms observed further imply that different prenucleation cluster dynamics can either frustrate or promote crystallization, as described by nonclassical nucleation theory.
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Affiliation(s)
| | - Trent R Graham
- Pacific Northwest National Laboratory , Richland , Washington 99352 , United States
| | | | | | | | - Carolyn I Pearce
- Pacific Northwest National Laboratory , Richland , Washington 99352 , United States
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10
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Jiang H, Debenedetti PG, Panagiotopoulos AZ. Nucleation in aqueous NaCl solutions shifts from 1-step to 2-step mechanism on crossing the spinodal. J Chem Phys 2019; 150:124502. [DOI: 10.1063/1.5084248] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Hao Jiang
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Pablo G. Debenedetti
- Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, USA
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11
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Gebauer D, Wolf SE. Designing Solid Materials from Their Solute State: A Shift in Paradigms toward a Holistic Approach in Functional Materials Chemistry. J Am Chem Soc 2019; 141:4490-4504. [DOI: 10.1021/jacs.8b13231] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Denis Gebauer
- Department of Chemistry, Physical Chemistry, University of Konstanz, 78457 Konstanz, Germany
| | - Stephan E. Wolf
- Department of Materials Science and Engineering, Institute of Glass and Ceramics and Interdisciplinary Center for Functional Particle Systems, Friedrich-Alexander-University Erlangen-Nuremberg, 91058 Erlangen, Germany
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Graham TR, Semrouni D, Mamontov E, Ramirez-Cuesta AJ, Page K, Clark A, Schenter GK, Pearce CI, Stack AG, Wang HW. Coupled Multimodal Dynamics of Hydrogen-Containing Ion Networks in Water-Deficient, Sodium Hydroxide-Aluminate Solutions. J Phys Chem B 2018; 122:12097-12106. [DOI: 10.1021/acs.jpcb.8b09375] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Trent R. Graham
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - David Semrouni
- Department of Chemistry and the Materials Science and Engineering Program, Washington State University, Pullman, Washington 99164, United States
| | | | | | | | - Aurora Clark
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Department of Chemistry and the Materials Science and Engineering Program, Washington State University, Pullman, Washington 99164, United States
| | - Gregory K. Schenter
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Carolyn I. Pearce
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
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