1
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Wang Y, Aikens CM. Effects of Nanowire Doping on Plasmon-Enhanced N 2 Dissociation. J Phys Chem A 2024. [PMID: 38703392 DOI: 10.1021/acs.jpca.3c08277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2024]
Abstract
Doping a transition metal element into plasmonic systems can tune the optical properties of the system, which will potentially facilitate the plasmon-enhanced catalytic process. In this study, we applied the linear-response time-dependent density functional theory (LR-TDDFT) method with real-time electron dynamics and mean-field Ehrenfest dynamics methods to computationally investigate the effects of doping silver nanowires on plasmon-enhanced N2 dissociation. We calculated the absorption spectra for different doped systems, applied an external electric field to the system, and performed mean-field Ehrenfest dynamics to examine how plasmonic excitation will affect the N2 activation or dissociation. In addition, we also studied how the transition metal dopant affects the system's electronic structure and potential energy surface.
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Affiliation(s)
- Yuchen Wang
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
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2
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Samarasinghe DSND, Aikens CM. Effects of Static Electric Fields on the Excitations of Silver Nanowire Dimers. J Phys Chem A 2024. [PMID: 38662421 DOI: 10.1021/acs.jpca.4c00627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
We theoretically studied the introduction of static electric fields to Ag10 nanowire dimer systems, including the effects of this field on optical absorption characteristics and the orbitals responsible for these excitations. Linear-response time-dependent density functional theory computations were performed on three distinct dimer systems: end-to-end, parallel, and 90° angle dimer systems separated by a closest interparticle distance of 7.0 Å. The calculations were performed in the presence of a 0.1 V/Å electric field strength applied in the z and y directions. The orientation of the dimer system and the direction of the applied static electric field each play a significant role in the resulting absorption spectra and the electronic structure of the nanowires. As a result, a dimer system can exhibit a blue shift for the longitudinal excitation and a red shift for the transverse excitation in the presence of one direction of the static electric field but not for the other direction. Notably, the electron density shifts from one nanowire to the other in the presence of the static electric field. Changes in optical characteristics and electronic structure suggest that the usage of a static electric field with a particular spatial configuration of nanowires provides a way to tune the optical properties of the system.
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Affiliation(s)
| | - Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
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3
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Wang Z, Wang Y, Xu TY, Li L, Aikens CM, Gao ZY, Azam M, Tung CH, Sun D. Temperature-Controlled Selective Formation of Silver Nanoclusters and Their Transformation to the Same Product. Angew Chem Int Ed Engl 2024:e202403464. [PMID: 38581155 DOI: 10.1002/anie.202403464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 03/18/2024] [Accepted: 04/05/2024] [Indexed: 04/08/2024]
Abstract
Herein, two atomically precise silver nanoclusters, Ag54 and Ag33, directed by inner anion templates (CrO4 2- and/or Cl-), are initially isolated as a mixed phase from identical reactants across a wide temperature range (20-80 °C). Interestingly, fine-tuning the reaction temperature can realize pure phase synthesis of the two nanoclusters; that is, a metastable Ag54 is kinetically formed at a low temperature (20 °C), whereas such a system is steered towards a thermodynamically stable Ag33 at a relatively high temperature (80 °C). Electrospray ionization mass spectrometry illustrates that the stability of Ag33 is superior to that of Ag54, which is further supported by density functional theory calculations. Importantly, the difference in structural stability can influence the pathway of 1,4-bis(pyrid-4-yl)benzene induced transformation reaction starting from Ag54 and Ag33. The former undergoes a dramatic breakage-reorganization process to form an Ag31 dimer (Ag31), while the same product can be also achieved from the latter following a noninvasive ligand exchange process. Both the Ag54 and Ag33 have the potential for further remote laser ignition applications. This work not only demonstrates how temperature controls the isolation of a specific phase, but also sheds light on the structural transformation pathway of nanoclusters with different stability.
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Affiliation(s)
- Zhi Wang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, 250100, Ji'nan, People's Republic of China
| | - Yuchen Wang
- Department of Chemistry, Kansas State University, 66506, Manhattan, Kansas, USA
| | - Tian-Yang Xu
- School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, 250100, Ji'nan, People's Republic of China
| | - Li Li
- School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, 250100, Ji'nan, People's Republic of China
| | - Christine M Aikens
- Department of Chemistry, Kansas State University, 66506, Manhattan, Kansas, USA
| | - Zhi-Yong Gao
- School of Chemistry and Chemical Engineering, Henan Normal University, 453007, Xinxiang, People's Republic of China
| | - Mohammad Azam
- Department of Chemistry, College of Science, King Saud University, PO BOX 2455, 11451, Riyadh, Saudi Arabia
| | - Chen-Ho Tung
- School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, 250100, Ji'nan, People's Republic of China
| | - Di Sun
- School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, 250100, Ji'nan, People's Republic of China
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4
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Tian WD, Si WD, Havenridge S, Zhang C, Wang Z, Aikens CM, Tung CH, Sun D. Biomimetic crystallization for long-pursued -COOH-functionalized gold nanocluster with near-infrared phosphorescence. Sci Bull (Beijing) 2024; 69:40-48. [PMID: 37985311 DOI: 10.1016/j.scib.2023.11.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 10/31/2023] [Accepted: 11/01/2023] [Indexed: 11/22/2023]
Abstract
As an interdisciplinary product, water-soluble gold nanoclusters (AuNCs) stabilized by ligands containing carboxyl (-COOH) group have garnered significant attention from synthetic chemists and biologists due to their immense potential for biomedical applications. However, revealing the crystallographic structures of -COOH-functionalized AuNCs remains a bottleneck. Herein, we successfully applied the salting-out method to obtain a series of high-quality single crystals of -COOH-functionalized Au25 nanoclusters and revealed their crystallographic structures. Particularly, K3Au25(2-Hmna)9(mna)6]- (Au25a) protected by 2-mercaptonicotinic acid features an unprecedented tetrameric Au4(SRS)3(SRS,N)2 staple motifs surrounding the icosahedral Au13 kernel, breaking the traditional perception on the structure of Au25(SR)18. Au25a exhibits a distinct near-infrared emission at 970 nm with long lifetime of 8690 ns, which have been studied by transient absorption spectroscopy and time-dependent density functional theory. This work compensates for the research gap in the experimental structure of -COOH-functionalized AuNCs and opens up a new avenue to explore their structure-property correlations.
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Affiliation(s)
- Wei-Dong Tian
- School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Wei-Dan Si
- School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Shana Havenridge
- Department of Chemistry, Kansas State University, Manhattan KS 66506, USA
| | - Chengkai Zhang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Zhi Wang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan KS 66506, USA
| | - Chen-Ho Tung
- School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Di Sun
- School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China.
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5
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Kuda-Singappulige GU, Window PS, Hosier CA, Anderson ID, Aikens CM, Ackerson CJ. Chiral and Achiral Crystal Structures of Au 25 (PET) 18 0 Reveal Effects of Ligand Rotational Isomerization on Optoelectronic Properties. Chemistry 2024; 30:e202202760. [PMID: 37955851 DOI: 10.1002/chem.202202760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Indexed: 11/14/2023]
Abstract
The crystal structures of 4 ligand-rotational isomers of Au25 (PET)18 are presented. Two new ligand-rotational isomers are revealed, and two higher-quality structures (allowing complete solution of the ligand shell) of previously solved Au25 (PET)18 clusters are also presented. One of the structures lacks an inversion center, making it the first chiral Au25 (SR)18 structure solved. These structures combined with previously published Au25 (SR)18 structures enable an analysis of the empirical ligand conformation landscape for Au25 (SR)18 clusters. This analysis shows that the dihedral angles within the PET ligand are restricted to certain observable values, and also that the dihedral angle values are interdependent, in a manner reminiscent of biomolecule dihedral angles such as those in proteins and DNA. The influence of ligand conformational isomerism on optical and electronic properties was calculated, revealing that the ligand conformations affect the nanocluster absorption spectrum, which potentially provides a way to distinguish between isomers at low temperature.
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Affiliation(s)
- Gowri Udayangani Kuda-Singappulige
- Department of Chemistry, Kansas State University, USA
- Present Address, Unilever Food Innovation Centre Hive, bronland 14, 6708WH, Wageningen, Netherlands
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6
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Havenridge S, Aikens CM. Understanding the Ligand-Dependent Photoluminescent Mechanism in Small Alkynyl-Protected Gold Nanoclusters. J Phys Chem A 2023; 127:9932-9943. [PMID: 37966050 DOI: 10.1021/acs.jpca.3c04644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2023]
Abstract
Alkynyl-protected gold clusters have recently gained attention because they are more structurally versatile than their thiolate-protected counterparts. Despite their flexibility, however, a higher photoluminescent quantum yield (PLQY) has been observed experimentally compared to that of organically soluble thiolate-protected clusters. Previous experiments have shown that changing the organic ligand, or R group, in these clusters does not affect the geometric or electronic properties of the core, leading to a similar absorption profile. This article serves as a follow-up to those experiments in which the geometric, optical, and photoluminescent (PL) properties of Au22(ETP)18 are pieced together to find the photoluminescence mechanism. These properties are then compared between Au22(C≡CR)18 clusters where the ligand is changed from R = ETP to PA and ET (ETP = 3-ethynylthiophene, PA = phenylacetylene, and ET = 3-ethynyltoluene). As the theoretical results do not reproduce the same absorption profile among the different ligands as in the experiment, this article also presents a supplementary benchmark of the geometric and optical properties among the three ligands for different levels of theory. The calculations show that the photoluminescence mechanism with the ETP ligand results in ligand-to-metal-to-metal charge transfer (LMMCT), while PA and ET are likely a result of core-dominated fluorescence. The changes are the result of the Au(I) ring atoms as well as how the aromatic groups are connected to the cluster. Additionally, dispersion, solvent, and polarization functions are all important to creating an accurate chemical environment, but the most useful tool in these calculations is the use of a long-range-corrected exchange-correlation functional.
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Affiliation(s)
- Shana Havenridge
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66502, United States
| | - Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66502, United States
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7
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Wang Y, Aikens CM. Effects of Field Strength and Silver Nanowire Size on Plasmon-Enhanced N 2 Dissociation. J Phys Chem A 2023. [PMID: 37379020 DOI: 10.1021/acs.jpca.3c00120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
Abstract
Dissociation of the nitrogen molecule via plasmon-enhanced catalysis using noble metal nanoparticles has been investigated both experimentally and computationally in recent years. However, the mechanism of plasmon-enhanced nitrogen dissociation is still not very clear. In this work, we apply theoretical approaches to examine the dissociation of a nitrogen molecule on atomically thin Agn nanowires (n = 6, 8, 10, 12) and a Ag19+ nanorod. Ehrenfest dynamics provides information about the motion of nuclei during the dynamics process and real-time TDDFT calculations show the electronic transitions and population of electrons over the first 10 s of fs time scale. The activation and dissociation of nitrogen are typically enhanced when the electric field strength increases. However, the enhancement is not always monotonic with field strength. As the length of the Ag wire increases, nitrogen is typically easier to dissociate and thus requires lower field strengths, even though the plasmon frequency is lower. The Ag19+ nanorod leads to faster dissociation of N2 than the atomically thin nanowires. Overall, our detailed study yields insights into the mechanisms involved in plasmon-enhanced N2 dissociation, as well as provides information about factors that can be used to improve adsorbate activation.
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Affiliation(s)
- Yuchen Wang
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
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8
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Havenridge S, Rüger R, Aikens CM. Analytical excited state gradients for time-dependent density functional theory plus tight binding (TDDFT + TB). J Chem Phys 2023; 158:2895226. [PMID: 37290069 DOI: 10.1063/5.0142240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 05/15/2023] [Indexed: 06/10/2023] Open
Abstract
Understanding photoluminescent mechanisms has become essential for photocatalytic, biological, and electronic applications. Unfortunately, analyzing excited state potential energy surfaces (PESs) in large systems is computationally expensive, and hence limited with electronic structure methods such as time-dependent density functional theory (TDDFT). Inspired by the sTDDFT and sTDA methods, time-dependent density functional theory plus tight binding (TDDFT + TB) has been shown to reproduce linear response TDDFT results much faster than TDDFT, particularly in large nanoparticles. For photochemical processes, however, methods must go beyond the calculation of excitation energies. Herein, this work outlines an analytical approach to obtain the derivative of the vertical excitation energy in TDDFT + TB for more efficient excited state PES exploration. The gradient derivation is based on the Z vector method, which utilizes an auxiliary Lagrangian to characterize the excitation energy. The gradient is obtained when the derivatives of the Fock matrix, the coupling matrix, and the overlap matrix are all plugged into the auxiliary Lagrangian, and the Lagrange multipliers are solved. This article outlines the derivation of the analytical gradient, discusses the implementation in Amsterdam Modeling Suite, and provides proof of concept by analyzing the emission energy and optimized excited state geometry calculated by TDDFT and TDDFT + TB for small organic molecules and noble metal nanoclusters.
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Affiliation(s)
- Shana Havenridge
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66502, USA
| | - Robert Rüger
- Software for Chemistry & Materials BV, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66502, USA
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9
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Singh KK, Bhattacharyya A, Havenridge S, Ghabin M, Ausmann H, Siegler MA, Aikens CM, Das A. A first glance into mixed phosphine-stibine moieties as protecting ligands for gold clusters. Nanoscale 2023; 15:6934-6940. [PMID: 37009838 DOI: 10.1039/d2nr05497c] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Atomically precise gold clusters have attracted considerable research interest as their tunable structure-property relationships have resulted in widespread applications, from sensing and biomedicine to energetic materials and catalysis. In this article, the synthesis and optical properties of a novel [Au6(SbP3)2][PF6]2 cluster are reported. Despite the lack of spherical symmetry in the core, the cluster shows exceptional thermal and chemical stability. Detailed structural attributes and optical properties are evaluated experimentally and theoretically. This, to the best of our knowledge, is the first report of a gold cluster protected via synergistic multidentate coordination of stibine (Sb) and phosphine moieties (P). To further show that the latter moieties give a set of unique properties that differs from monodentate phosphine-protected [Au6(PPh3)6]2+, geometric structure, electronic structure, and optical properties are analyzed theoretically. In addition, this report also demonstrates the critical role of overall-ligand architecture in stabilizing mixed ligand-protected gold clusters.
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Affiliation(s)
- Kundan K Singh
- Department of Chemistry, Southern Methodist University, Dallas, Texas 75275, USA.
| | - Ayan Bhattacharyya
- Department of Chemistry, Southern Methodist University, Dallas, Texas 75275, USA.
| | - Shana Havenridge
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, USA.
| | - Mohamed Ghabin
- Department of Chemistry, Southern Methodist University, Dallas, Texas 75275, USA.
| | - Hagan Ausmann
- Department of Chemistry, Southern Methodist University, Dallas, Texas 75275, USA.
| | - Maxime A Siegler
- Department of Chemistry, John Hopkins University, Baltimore, Maryland 21218, USA
| | - Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, USA.
| | - Anindita Das
- Department of Chemistry, Southern Methodist University, Dallas, Texas 75275, USA.
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10
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Hull OA, Aikens CM. Theoretical Investigations on the Plasmon-Mediated Dissociation of Small Molecules in the Presence of Silver Atomic Wires. J Phys Chem A 2023; 127:2228-2241. [PMID: 36862925 DOI: 10.1021/acs.jpca.2c07531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
Plasmonic nanoparticles can promote bond activation in adsorbed molecules under relatively benign conditions via excitation of the nanoparticle's plasmon resonance. As the plasmon resonance often falls within the visible light region, plasmonic nanomaterials are a promising class of catalysts. However, the exact mechanisms through which plasmonic nanoparticles activate the bonds of nearby molecules are still unclear. Herein, we evaluate Ag8-X2 (X = N, H) model systems via real-time time-dependent density functional theory (RT-TDDFT), linear response time-dependent density functional theory (LR-TDDFT), and Ehrenfest dynamics in order to better understand the bond activation processes of N2 and H2 facilitated by the presence of the atomic silver wire under excitation at the plasmon resonance energies. We find that dissociation is possible for both small molecules at high electric field strength. Activation of each adsorbate is symmetry- and electric field-dependent, and H2 activates at lower electric field strengths than N2. This work serves as a step toward understanding the complex time-dependent electron and electron-nuclear dynamics between plasmonic nanowires and adsorbed small molecules.
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Affiliation(s)
- Olivia A Hull
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
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11
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Havenridge S, Weerawardene KLDM, Aikens CM. Characterization of Pt-doping effects on nanoparticle emission: a theoretical look at Au 24Pt(SH) 18 and Au 24Pt(SC 3H 7) 18. Faraday Discuss 2023; 242:464-477. [PMID: 36222075 DOI: 10.1039/d2fd00110a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Developments in nanotechnology have made the creation of functionalized materials with atomic precision possible. Thiolate-protected gold nanoclusters, in particular, have become the focus of study in literature as they possess high stability and have tunable structure-property relationships. In addition to adjustments in properties due to differences in size and shape, heteroatom doping has become an exciting way to tune the properties of these systems by mixing different atomic d characters from transition metal atoms. Au24Pt(SR)18 clusters, notably, have shown incredible catalytic properties, but fall short in the field of photochemistry. The influence of the Pt dopant on the photoluminescence mechanism and excited state dynamics has been investigated by a few experimental groups, but the origin of the differences that arise due to doping has not been clarified thoroughly. In this paper, density functional theory methods are used to analyze the geometry, optical and photoluminescent properties of Au24Pt(SR)18 in comparison with those of [Au25(SR)18]1-. Furthermore, as these clusters have shown slightly different geometric and optical properties for different ligands, the analysis is completed with both hydrogen and propyl ligands in order to ascertain the role of the passivating ligands.
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Affiliation(s)
- Shana Havenridge
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, USA.
| | | | - Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, USA.
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12
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Aikens CM, Amara H, Amendola V, Baletto F, Barcikowski S, Barrabés N, Caps V, Chen F, Cheng D, Chinnabathini VC, Cottancin E, Daniel IT, De Knijf K, Fortunelli A, Grandjean D, Hutchings GJ, Janssens E, Jones RM, Kuttner C, Large AI, Marceau É, Mariscal MM, Ntola P, Quinson J, Shozi M, Swaminathan S, Treguer-Delapierre M, Wang L, Weissker HC, Jose Yacaman M, Zhang Y. Nanoalloy catalysis and magnetic and optical properties: general discussion. Faraday Discuss 2023; 242:522-541. [PMID: 36562328 DOI: 10.1039/d2fd90088b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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13
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Aikens CM, Alloyeau D, Amendola V, Amiens C, Andreazza P, Bakker JM, Baletto F, Barcikowski S, Barrabés N, Bowker M, Chen F, Daniel IT, Ernst WE, Ferrando R, Ferrari P, Fortunelli A, Grandjean D, Guesmi H, Hutchings GJ, Janssens E, Jones RM, Jose Yacaman M, Kuttner C, Lopez MJ, Marceau É, Mariscal MM, McGrady J, Mottet C, Nelayah J, Owen CJ, Polak M, Quinson J, Roncaglia C, Schäfer R, Svensson R, Treguer-Delapierre M, Zhang Y. Nanoalloy magnetic and optical properties, applications and structures: general discussion. Faraday Discuss 2023; 242:389-417. [PMID: 36562550 DOI: 10.1039/d2fd90087d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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14
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Aikens CM, Jarrold CC. Virtual Issue on Experiment-Theory Synergies in the Study of Metal and Metal-Containing Clusters. J Phys Chem A 2023; 127:3-5. [PMID: 36632723 DOI: 10.1021/acs.jpca.2c08524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Christine M Aikens
- Department of Chemistry, Kansas State University, 213 CBC Building, 1212 Mid-Campus Dr. North, Manhattan, Kansas 66506, United States
| | - Caroline Chick Jarrold
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
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15
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Wang Y, Li A, Pinkerton J, Aikens CM. Effects of Diglyme on Au Nanocluster Formation: Mechanism, 1H NMR, and Bonding. J Phys Chem A 2022; 126:7598-7605. [PMID: 36223604 DOI: 10.1021/acs.jpca.2c04218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Recently, diglyme was applied as a solvent in the synthesis of a luminescent gold-thiolate nanocluster. However, the interactions between the diglyme and the gold nanocluster and the intrinsic mechanism of the diglyme-assisted nanocluster growth have not been examined. In this work, we use density functional theory (DFT) to propose a plausible pathway for diglyme-assisted Au(I)-thiolate synthesis; the reaction energies are found to be negative in every step. 1H NMR calculations are applied to characterize how the environment arising from different gold motifs affects the chemical shifts of the protons on diglyme, which experience strong downfield shifts. Extended transition state-natural orbitals for chemical valence (ETS-NOCV) theory is also utilized to examine the interactions between diglyme and gold clusters as well as a Au20(SR)15 nanocluster. Our work demonstrates that diglyme can play an important role in the synthetic mechanism yielding gold nanoclusters and provides insights into the diglyme-nanocluster binding motifs and resulting NMR chemical shifts.
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Affiliation(s)
- Yuchen Wang
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Alice Li
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States.,Department of Chemistry and Biochemistry, Bates College, Lewiston, Maine 04240, United States
| | - Jacqueline Pinkerton
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States.,Natural Sciences Programs, Pensacola Christian College, Pensacola, Florida 32503, United States
| | - Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
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16
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Zhang SS, Havenridge S, Zhang C, Wang Z, Feng L, Gao ZY, Aikens CM, Tung CH, Sun D. Sulfide Boosting Near-Unity Photoluminescence Quantum Yield of Silver Nanocluster. J Am Chem Soc 2022; 144:18305-18314. [PMID: 36169057 DOI: 10.1021/jacs.2c06093] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Silver nanoclusters have emerged as promising candidates for optoelectronic applications, but their room-temperature photoluminescence quantum yield (PLQY) is far from ideal to access cutting-edge device performance. Herein, two supertetrahedral silver nanoclusters with high PLQY in non-degassed solution at room temperature were constructed by interiorly supporting the core with multiple VO43- and E2- anions as structure-directing agents and exteriorly protecting the core with a rigid ligand shell of PhC≡C- and Ph2PE2- (E = S, Ag64-S; E = Se, Ag64-Se). Both clusters have similar outer Ag58 tetrahedral cages and [Ag6E4@(VO4)4] cores, forming a pair of comparable clusters to decrypt the origin of such a high PLQY, particularly in Ag64-S, where the PLQY reached up to 97%. The stronger suppression effect of inner sulfides for nonradiative decay is critical to boost the PLQY to near unity. Transient absorption spectroscopy is employed to confirm the phosphorescence nature. The quadruple-capping assembly mechanism involving Ag7 secondary building units on a Ag36 truncated tetrahedron was also established by collision-induced dissociation studies. This work not only provides a strategy of core engineering for the controlled syntheses of silver nanoclusters with high PLQY but also deciphers the origin of a near-unity PLQY, which lays a foundation for fabricating highly phosphorescent silver nanoclusters in the future.
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Affiliation(s)
- Shan-Shan Zhang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Ji'nan 250100, People's Republic of China
| | - Shana Havenridge
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Chengkai Zhang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Ji'nan 250100, People's Republic of China
| | - Zhi Wang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Ji'nan 250100, People's Republic of China
| | - Lei Feng
- School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Ji'nan 250100, People's Republic of China
| | - Zhi-Yong Gao
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, People's Republic of China
| | - Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Chen-Ho Tung
- School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Ji'nan 250100, People's Republic of China
| | - Di Sun
- School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Ji'nan 250100, People's Republic of China
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17
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Wang Z, Alkan F, Aikens CM, Kurmoo M, Zhang Z, Song K, Tung C, Sun D. An Ultrastable 155‐Nuclei Silver Nanocluster Protected by Thiacalix[4]arene and Cyclohexanethiol for Photothermal Conversion. Angew Chem Int Ed Engl 2022; 61:e202206742. [DOI: 10.1002/anie.202206742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Zhi Wang
- School of Chemistry and Chemical Engineering State Key Laboratory of Crystal Materials Shandong University Ji'nan 250100 P. R. China
| | - Fahri Alkan
- Department of Nanotechnology Engineering Abdullah Gül University Kayseri Turkey
| | | | - Mohamedally Kurmoo
- Institut de Chimie de Strasbourg Université de Strasbourg, CNRS-UMR 7177 4 rue Blaise Pascal 67008 Strasbourg Cedex France
| | - Zhen‐Yi Zhang
- Bruker (Beijing) Scientific Technology Co., Ltd. P. R. China
| | - Ke‐Peng Song
- School of Chemistry and Chemical Engineering State Key Laboratory of Crystal Materials Shandong University Ji'nan 250100 P. R. China
| | - Chen‐Ho Tung
- School of Chemistry and Chemical Engineering State Key Laboratory of Crystal Materials Shandong University Ji'nan 250100 P. R. China
| | - Di Sun
- School of Chemistry and Chemical Engineering State Key Laboratory of Crystal Materials Shandong University Ji'nan 250100 P. R. China
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18
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Abstract
The synthesis and characterization of an Au20(PET)15(DG)2 (PET = phenylethane thiol; DG = diglyme) cluster is reported. Mass spectrometry reveals this as the first diglyme ligated cluster where diglyme ligands survive ionization into the gas phase. Thermal analysis shows the cluster degrades at 156 °C, whereas the similar Au20(PET)16 cluster degrades at 125 °C, representing markedly increased thermal stability. A combination of NMR spectroscopy and computational modeling suggests that the diglyme molecules bind in a tridentate manner for this cluster, resulting in a binding energy of 35.2 kcal mol-1 for diglyme, which is comparable to the value of ∼40 kcal mol-1 for thiolates. IR and optical spectroscopies show no evidence of assembly of this cluster, in contrast to Au20(PET)15(DG), which readily assembles into dimeric species, which is consistent with a tridentate binding motif. Evidence for stacking among Au-bound and non-bound diglyme molecules is inferred from thermal and mass analysis.
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Affiliation(s)
- Ian D Anderson
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA.
| | - Yuchen Wang
- Department of Chemistry, Kansas State University, Manhattan, KS 66506, USA
| | - Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan, KS 66506, USA
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19
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Wang Z, Alkan F, Aikens CM, Kurmoo M, Zhang Z, Song K, Tung C, Sun D. An Ultrastable 155‐Nuclei Silver Nanocluster Protected by Thiacalix[4]arene and Cyclohexanethiol for Photothermal Conversion. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202206742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zhi Wang
- School of Chemistry and Chemical Engineering State Key Laboratory of Crystal Materials Shandong University Ji'nan 250100 P. R. China
| | - Fahri Alkan
- Department of Nanotechnology Engineering Abdullah Gül University Kayseri Turkey
| | | | - Mohamedally Kurmoo
- Institut de Chimie de Strasbourg Université de Strasbourg, CNRS-UMR 7177 4 rue Blaise Pascal 67008 Strasbourg Cedex France
| | - Zhen‐Yi Zhang
- Bruker (Beijing) Scientific Technology Co., Ltd. P. R. China
| | - Ke‐Peng Song
- School of Chemistry and Chemical Engineering State Key Laboratory of Crystal Materials Shandong University Ji'nan 250100 P. R. China
| | - Chen‐Ho Tung
- School of Chemistry and Chemical Engineering State Key Laboratory of Crystal Materials Shandong University Ji'nan 250100 P. R. China
| | - Di Sun
- School of Chemistry and Chemical Engineering State Key Laboratory of Crystal Materials Shandong University Ji'nan 250100 P. R. China
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20
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Affiliation(s)
- Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, USA
| | - Rongchao Jin
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - Xavier Roy
- Department of Chemistry, Columbia University, New York, New York 10027, USA
| | - Tatsuya Tsukuda
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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21
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Liu Z, Oviedo MB, Wong BM, Aikens CM. Plasmon-induced excitation energy transfer in silver nanoparticle dimers: A real-time TDDFTB investigation. J Chem Phys 2022; 156:154705. [PMID: 35459307 DOI: 10.1063/5.0082960] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Using real-time quantum dynamics calculations, we perform theoretical investigations of light-induced interactions and electronic excitation transfer in a silver nanoparticle dimer. Real-time time-dependent density functional tight-binding (RT-TDDFTB) calculations provide details of the quantum dynamical processes at an electronic/atomistic level with attosecond resolution. The computational efficiency of RT-TDDFTB allows us to examine electronic dynamics up to picosecond time scales. With time scales varying over six orders of magnitude, we provide insight into interactions between the nanoparticle and laser and between nanoparticles. Our results show that the coupling between nanoparticle monomers is dependent on the separation distance between the nanoparticles in the dimer. As the interparticle distance is varied, the dipole-dipole interactions and electronic excitation transfer mechanisms are markedly different. At large distances (from 50 to 20 Å), the energy transfer from NP1 to NP2 becomes more efficient as the interparticle distance decreases. The total dipole moment of the Ag14 nanoparticle dimer increases linearly at an interparticle distance of 20 Å and reaches its maximum after 1.2 ps. The electronic excitation transfer is also the most efficient at 20 Å. At short distances, back-transfer effects reduce the ability of the dimer and NP1 to accept energy from the incident electric field. We attribute the distance-dependent features of the nanoparticle dimer to the beating between the laser acting on NP1 and the back transfer from NP2 to NP1.
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Affiliation(s)
- Zhen Liu
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, USA
| | - M Belén Oviedo
- Department of Chemical and Environmental Engineering and Materials Science and Engineering Program, University of California-Riverside, Riverside, California 92521, USA
| | - Bryan M Wong
- Department of Chemical and Environmental Engineering and Materials Science and Engineering Program, University of California-Riverside, Riverside, California 92521, USA
| | - Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, USA
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22
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Bae G, Aikens CM. Time‐dependent density functional theory study of the optical properties of tetrahedral aluminum nanoparticles. J Comput Chem 2022; 43:1033-1041. [DOI: 10.1002/jcc.26868] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 03/29/2022] [Accepted: 03/31/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Gyun‐Tack Bae
- Department of Chemistry Education Chungbuk National University Cheongju South Korea
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23
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Patty JB, Havenridge S, Tietje-Mckinney D, Siegler MA, Singh KK, Hajy Hosseini R, Ghabin M, Aikens CM, Das A. Crystal Structure and Optical Properties of a Chiral Mixed Thiolate/Stibine-Protected Au 18 Cluster. J Am Chem Soc 2021; 144:478-484. [PMID: 34957826 DOI: 10.1021/jacs.1c10778] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
We report the first example of a chiral mixed thiolate/stibine-protected gold cluster, formulated as Au18(S-Adm)8(SbPh3)4Br2 (where S-Adm = 1-adamantanethiolate). Single crystal X-ray crystallography reveals the origin of chirality in the cluster to be the introduction of the rotating arrangement of Au2(S-Adm)3 and Au(S-Adm)2 staple motifs on an achiral Au13 core and the subsequent capping of the remaining gold atoms by SbPh3 and Br- ligands. Interestingly, the structure and properties of this new Au18 cluster are found to be different from other reported achiral Au18 clusters and the only other stibine-protected [Au13(SbPh3)8Cl4]+ cluster. Detailed analyses on the geometric and electronic structures of the new cluster are carried out to gain insights into its optical properties as well as reactivity and stability of such mixed monolayer-protected clusters.
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Affiliation(s)
- Justin B Patty
- Department of Chemistry, Southern Methodist University, Dallas, Texas 75275, United States
| | - Shana Havenridge
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Dylan Tietje-Mckinney
- Department of Chemistry, Southern Methodist University, Dallas, Texas 75275, United States
| | - Maxime A Siegler
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Kundan K Singh
- Department of Chemistry, Southern Methodist University, Dallas, Texas 75275, United States
| | - Roumina Hajy Hosseini
- Department of Chemistry, Southern Methodist University, Dallas, Texas 75275, United States
| | - Mohamed Ghabin
- Department of Chemistry, Southern Methodist University, Dallas, Texas 75275, United States
| | - Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Anindita Das
- Department of Chemistry, Southern Methodist University, Dallas, Texas 75275, United States
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24
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Kuda-Singappulige GU, Aikens CM. Theoretical Insights into Excitation-Induced Oxygen Activation on a Tetrahedral Ag 8 Cluster. J Phys Chem A 2021; 125:9450-9458. [PMID: 34669419 DOI: 10.1021/acs.jpca.1c05129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Research on small-molecule dissociation on plasmonic silver nanoparticles is on the rise. Herein, we investigate the effect of various parameters of light, i.e., field strength, polarization direction, and energy of oscillation, on the dynamics of oxygen upon photoexcitation of the O2@Ag8 composite using real-time time-dependent density functional theory calculations with Ehrenfest dynamics. From our excited-state dynamics calculations, we found that increasing the strength of the external electric field brings a significant contribution to the O-O dissociation. In addition, the polarization direction of the incident light becomes important, especially at weaker field strengths. The light that is polarized along the direction of charge transfer from the metal to adsorbate and the light that is polarized along the long axis of molecular oxygen were found to enhance the bond breaking of O2 significantly. We also found that at the weakest electric field strength, the oxygen molecule stays adsorbed to the silver cluster when the incident light resonates with low-energy excited states and desorbs away from the metal cluster with high-energy excitations. With strong electric fields, oxygen either desorbs or dissociates.
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Affiliation(s)
| | - Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
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25
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Havenridge S, Aikens CM. Deciphering the dual emission in the photoluminescence of Au 14Cd(SR) 12: A theoretical study using TDDFT and TDDFT + TB. J Chem Phys 2021; 155:074302. [PMID: 34418928 DOI: 10.1063/5.0057079] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Determining excited state processes for small nanoclusters, specifically gold, aids in our ability to fine-tune luminescent materials and optical devices. Using TDDFT and TDDFT + TB, we present a detailed theoretical explanation for the dual emission peaks displayed in Au14Cd(S-Adm)12 (Adm = adamantane). As dual emission is relatively rare, we decipher whether the mechanism originates from two different excited states or from two different minima on the same excited state surface. This unique mechanism, which proposes that the dual emission results from two minima on the first excited state, stems from geometrical changes in the bi-tetrahedron core during the emission process.
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Affiliation(s)
- Shana Havenridge
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66502, USA
| | - Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66502, USA
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26
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Fagan JW, Weerawardene KLDM, Cirri A, Aikens CM, Johnson CJ. Toward quantitative electronic structure in small gold nanoclusters. J Chem Phys 2021; 155:014301. [PMID: 34241394 DOI: 10.1063/5.0055210] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Ligand-protected gold nanoclusters (AuNCs) feature a dense but finite electronic structure that can be rationalized using qualitative descriptions such as the well-known superatomic model and predicted using quantum chemical calculations. However, the lack of well-resolved experimental probes of a AuNC electronic structure has made the task of evaluating the accuracy of electronic structure descriptions challenging. We compare electronic absorption spectra computed using time-dependent density functional theory to recently collected high resolution experimental spectra of Au9(PPh3)8 3+ and Au8(PPh3)7 2+ AuNCs with strikingly similar features. After applying a simple scaling correction, the computed spectrum of Au8(PPh3)7 2+ yields a suitable match, allowing us to assign low-energy metal-metal transitions in the experimental spectrum. No similar match is obtained after following the same procedure for two previously reported isomers for Au9(PPh3)8 3+, suggesting either a deficiency in the calculations or the presence of an additional isomer. Instead, we propose assignments for Au9(PPh3)8 3+ based off of similarities Au8(PPh3)7 2+. We further model these clusters using a simple particle-in-a-box analysis for an asymmetrical ellipsoidal superatomic core, which allows us to reproduce the same transitions and extract an effective core size and shape that agrees well with that expected from crystal structures. This suggests that the superatomic model, which is typically employed to explain the qualitative features of nanocluster electronic structures, remains valid even for small AuNCs with highly aspherical cores.
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Affiliation(s)
- Jonathan W Fagan
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, USA
| | | | - Anthony Cirri
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, USA
| | - Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, USA
| | - Christopher J Johnson
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, USA
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27
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Zeng Y, Havenridge S, Gharib M, Baksi A, Weerawardene KLDM, Ziefuß AR, Strelow C, Rehbock C, Mews A, Barcikowski S, Kappes MM, Parak WJ, Aikens CM, Chakraborty I. Impact of Ligands on Structural and Optical Properties of Ag 29 Nanoclusters. J Am Chem Soc 2021; 143:9405-9414. [PMID: 34138547 DOI: 10.1021/jacs.1c01799] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A ligand exchange strategy has been employed to understand the role of ligands on the structural and optical properties of atomically precise 29 atom silver nanoclusters (NCs). By ligand optimization, ∼44-fold quantum yield (QY) enhancement of Ag29(BDT)12-x(DHLA)x NCs (x = 1-6) was achieved, where BDT and DHLA refer to 1,3-benzene-dithiol and dihydrolipoic acid, respectively. High-resolution mass spectrometry was used to monitor ligand exchange, and structures of the different NCs were obtained through density functional theory (DFT). The DFT results from Ag29(BDT)11(DHLA) NCs were further experimentally verified through collisional cross-section (CCS) analysis using ion mobility mass spectrometry (IM MS). An excellent match in predicted CCS values and optical properties with the respective experimental data led to a likely structure of Ag29(DHLA)12 NCs consisting of an icosahedral core with an Ag16S24 shell. Combining the experimental observation with DFT structural analysis of a series of atomically precise NCs, Ag29-yAuy(BDT)12-x(DHLA)x (where y, x = 0,0; 0,1; 0,12 and 1,12; respectively), it was found that while the metal core is responsible for the origin of photoluminescence (PL), ligands play vital roles in determining their resultant PLQY.
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Affiliation(s)
- Yuan Zeng
- Department of Physics and Center for Hybrid Nanostructure (CHyN), University of Hamburg, Luruper Chaussee 149, Hamburg 22761, Hamburg, Germany
| | - Shana Havenridge
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Mustafa Gharib
- Department of Physics and Center for Hybrid Nanostructure (CHyN), University of Hamburg, Luruper Chaussee 149, Hamburg 22761, Hamburg, Germany.,Radiation Biology Department, Egyptian Atomic Energy Authority (EAEA), Cairo 11787, Egypt
| | - Ananya Baksi
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen 76344, Germany
| | - K L Dimuthu M Weerawardene
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States.,Department of Chemistry, Baylor University, Waco, Texas 76798, United States
| | - Anna Rosa Ziefuß
- Department of Technical Chemistry I, University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE), Essen 45141, Germany
| | - Christian Strelow
- Department of Chemistry, University of Hamburg, Grindelallee 117, Hamburg 20146, Germany
| | - Christoph Rehbock
- Department of Technical Chemistry I, University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE), Essen 45141, Germany
| | - Alf Mews
- Department of Chemistry, University of Hamburg, Grindelallee 117, Hamburg 20146, Germany
| | - Stephan Barcikowski
- Department of Technical Chemistry I, University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE), Essen 45141, Germany
| | - Manfred M Kappes
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen 76344, Germany
| | - Wolfgang J Parak
- Department of Physics and Center for Hybrid Nanostructure (CHyN), University of Hamburg, Luruper Chaussee 149, Hamburg 22761, Hamburg, Germany.,Department of Chemistry, University of Hamburg, Grindelallee 117, Hamburg 20146, Germany.,CIC Biomagune, San Sebastian 20014, Spain
| | - Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Indranath Chakraborty
- Department of Physics and Center for Hybrid Nanostructure (CHyN), University of Hamburg, Luruper Chaussee 149, Hamburg 22761, Hamburg, Germany
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28
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Abstract
Nitrogen bond dissociation is one of the important steps in the Haber-Bosch process, where N2 is catalytically converted to NH3; however, the dissociation of the nitrogen triple bond is difficult to achieve. In this study, we investigate the possibility of nitrogen activation using plasmonic excitation of an icosahedral aluminum nanocluster. Real-time time-dependent density functional theory is employed to study the electron dynamics of the Al13-1 and [Al13N2]-1 systems. Step and trapezoidal electric fields with field strengths of 0.001 and 0.01 au and different polarization directions are applied to the systems, and the electron dynamics are analyzed. Because the occupation of nitrogen antibonding orbitals could potentially activate the N-N bond, we investigated the single-particle electronic transitions corresponding to an excitation from an occupied (O) to virtual (V) molecular orbitals (POV) of [Al13N2]-1. We found that N2 antibonding orbitals are more likely to become populated with stronger fields and also by using off-resonance fields.
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Affiliation(s)
- Pratima Pandeya
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
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29
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Pandeya P, Senanayake RD, Aikens CM. Nonradiative relaxation dynamics in the [Au 25-nAg n(SH) 18] -1 (n = 1, 12, 25) thiolate-protected nanoclusters. J Chem Phys 2021; 154:184303. [PMID: 34241036 DOI: 10.1063/5.0045590] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Evaluation of the electron-nuclear dynamics and relaxation mechanisms of gold and silver nanoclusters and their alloys is important for future photocatalytic, light harvesting, and photoluminescence applications of these systems. In this work, the effect of silver doping on the nonradiative excited state relaxation dynamics of the atomically precise thiolate-protected gold nanocluster [Au25-nAgn(SH)18]-1 (n = 1, 12, 25) is studied theoretically. Time-dependent density functional theory is used to study excited states lying in the energy range 0.0-2.5 eV. The fewest switches surface hopping method with decoherence correction was used to investigate the dynamics of these states. The HOMO-LUMO gap increases significantly upon doping of 12 silver atoms but decreases for the pure silver nanocluster. Doped clusters show a different response for ground state population increase lifetimes and excited state population decay times in comparison to the undoped system. The ground state recovery times of the S1-S6 states in the first excited peak were found to be longer for [Au13Ag12(SH)18]-1 than the corresponding recovery times of other studied nanoclusters, suggesting that this partially doped nanocluster is best for preserving electrons in an excited state. The decay time constants were in the range of 2.0-20 ps for the six lowest energy excited states. Among the higher excited states, S7 has the slowest decay time constant although it occurs more quickly than S1 decay. Overall, these clusters follow common decay time constant trends and relaxation mechanisms due to the similarities in their electronic structures.
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Affiliation(s)
- Pratima Pandeya
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, USA
| | | | - Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, USA
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30
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Yang J, Pei Z, Deng J, Mao Y, Wu Q, Yang Z, Wang B, Aikens CM, Liang W, Shao Y. Correction: Analysis and visualization of energy densities. I. Insights from real-time time-dependent density functional theory simulations. Phys Chem Chem Phys 2021; 23:8936. [PMID: 33876053 DOI: 10.1039/d1cp90057a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Correction for 'Analysis and visualization of energy densities. I. Insights from real-time time-dependent density functional theory simulations' by Junjie Yang et al., Phys. Chem. Chem. Phys., 2020, 22, 26838-26851, DOI: .
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Affiliation(s)
- Junjie Yang
- Department of Chemistry and Biochemistry, University of Oklahoma, 101 Stephenson Pkwy, Norman, OK 73019, USA.
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31
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Zhang W, Liu Z, Song K, Aikens CM, Zhang S, Wang Z, Tung C, Sun D. A 34‐Electron Superatom Ag
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Cluster with Regioselective Ternary Ligands Shells and Its 2D Rhombic Superlattice Assembly. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202013681] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Wen‐Jing Zhang
- Key Lab of Colloid and Interface Chemistry Ministry of Education School of Chemistry and Chemical Engineering State Key Laboratory of Crystal Materials Shandong University Ji'nan 250100 P. R. China
| | - Zhen Liu
- Department of Chemistry Kansas State University Manhattan KS 66506 USA
| | - Ke‐Peng Song
- Key Lab of Colloid and Interface Chemistry Ministry of Education School of Chemistry and Chemical Engineering State Key Laboratory of Crystal Materials Shandong University Ji'nan 250100 P. R. China
| | | | - Shan‐Shan Zhang
- Key Lab of Colloid and Interface Chemistry Ministry of Education School of Chemistry and Chemical Engineering State Key Laboratory of Crystal Materials Shandong University Ji'nan 250100 P. R. China
| | - Zhi Wang
- Key Lab of Colloid and Interface Chemistry Ministry of Education School of Chemistry and Chemical Engineering State Key Laboratory of Crystal Materials Shandong University Ji'nan 250100 P. R. China
| | - Chen‐Ho Tung
- Key Lab of Colloid and Interface Chemistry Ministry of Education School of Chemistry and Chemical Engineering State Key Laboratory of Crystal Materials Shandong University Ji'nan 250100 P. R. China
| | - Di Sun
- Key Lab of Colloid and Interface Chemistry Ministry of Education School of Chemistry and Chemical Engineering State Key Laboratory of Crystal Materials Shandong University Ji'nan 250100 P. R. China
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32
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Zhang W, Liu Z, Song K, Aikens CM, Zhang S, Wang Z, Tung C, Sun D. A 34‐Electron Superatom Ag
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Cluster with Regioselective Ternary Ligands Shells and Its 2D Rhombic Superlattice Assembly. Angew Chem Int Ed Engl 2020; 60:4231-4237. [DOI: 10.1002/anie.202013681] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Indexed: 12/27/2022]
Affiliation(s)
- Wen‐Jing Zhang
- Key Lab of Colloid and Interface Chemistry Ministry of Education School of Chemistry and Chemical Engineering State Key Laboratory of Crystal Materials Shandong University Ji'nan 250100 P. R. China
| | - Zhen Liu
- Department of Chemistry Kansas State University Manhattan KS 66506 USA
| | - Ke‐Peng Song
- Key Lab of Colloid and Interface Chemistry Ministry of Education School of Chemistry and Chemical Engineering State Key Laboratory of Crystal Materials Shandong University Ji'nan 250100 P. R. China
| | | | - Shan‐Shan Zhang
- Key Lab of Colloid and Interface Chemistry Ministry of Education School of Chemistry and Chemical Engineering State Key Laboratory of Crystal Materials Shandong University Ji'nan 250100 P. R. China
| | - Zhi Wang
- Key Lab of Colloid and Interface Chemistry Ministry of Education School of Chemistry and Chemical Engineering State Key Laboratory of Crystal Materials Shandong University Ji'nan 250100 P. R. China
| | - Chen‐Ho Tung
- Key Lab of Colloid and Interface Chemistry Ministry of Education School of Chemistry and Chemical Engineering State Key Laboratory of Crystal Materials Shandong University Ji'nan 250100 P. R. China
| | - Di Sun
- Key Lab of Colloid and Interface Chemistry Ministry of Education School of Chemistry and Chemical Engineering State Key Laboratory of Crystal Materials Shandong University Ji'nan 250100 P. R. China
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33
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Yang J, Pei Z, Deng J, Mao Y, Wu Q, Yang Z, Wang B, Aikens CM, Liang W, Shao Y. Analysis and visualization of energy densities. I. Insights from real-time time-dependent density functional theory simulations. Phys Chem Chem Phys 2020; 22:26838-26851. [PMID: 33170198 PMCID: PMC7722154 DOI: 10.1039/d0cp04206d] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this article, we report a scheme to analyze and visualize the energy density fluctuations during the real-time time-dependent density functional theory (RT-TDDFT) simulations. Using Ag4-N2 complexes as examples, it is shown that the grid-based Kohn-Sham energy density can be computed at each time step using a procedure from Nakai and coworkers. Then the instantaneous energy of each molecular fragment (such as Ag4 and N2) can be obtained by partitioning the Kohn-Sham energy densities using Becke or fragment-based Hirshfeld (FBH) scheme. A strong orientation-dependence is observed for the energy flow between the Ag4 cluster and a nearby N2 molecule in the RT-TDDFT simulations. Future applications of such an energy density analysis in electron dynamics simulations are discussed.
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Affiliation(s)
- Junjie Yang
- Department of Chemistry and Biochemistry, University of Oklahoma, 101 Stephenson Pkwy, Norman, OK 73019, USA.
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34
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Pei Z, Yang J, Deng J, Mao Y, Wu Q, Yang Z, Wang B, Aikens CM, Liang W, Shao Y. Analysis and visualization of energy densities. II. Insights from linear-response time-dependent density functional theory calculations. Phys Chem Chem Phys 2020; 22:26852-26864. [PMID: 33216085 PMCID: PMC8258743 DOI: 10.1039/d0cp04207b] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Inspired by the analysis of Kohn-Sham energy densities by Nakai and coworkers, we extended the energy density analysis to linear-response time-dependent density functional theory (LR-TDDFT) calculations. Using ethylene-tetrafluoroethylene and oxyluciferin-water complexes as examples, distinctive distribution patterns were demonstrated for the excitation energy densities of local excitations (within a molecular fragment) and charge-transfer excitations (between molecular fragments). It also provided a simple way to compute the effective energy of both hot carriers (particle and hole) from charge-transfer excitations via an integration of the excitation energy density over the donor and acceptor grid points.
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Affiliation(s)
- Zheng Pei
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China.
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35
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Kuda-Singappulige GU, Wildman A, Lingerfelt DB, Li X, Aikens CM. Ultrafast Nonradiative Decay of a Dipolar Plasmon-like State in Naphthalene. J Phys Chem A 2020; 124:9729-9737. [PMID: 33181013 DOI: 10.1021/acs.jpca.0c09564] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Motivated by the uncertainty in our understanding of ultrafast plasmon decay mechanisms, we examine the effect of nuclear vibrations on the dynamical behavior of the strong plasmon-like dipole response of naphthalene, known as the β peak. The real-time time-dependent density functional (RT-TDDFT) method coupled with Ehrenfest molecular dynamics is used to describe the interconnected nuclear and electronic motion. Several vibrational modes promote drastic plasmon decay in naphthalene. The most astonishing finding of this study is that activation of one particular vibrational mode (corresponding to the B1u representation in D2h point group symmetry) leads to a continuous drop of the dipole response corresponding to the β peak into a totally symmetric, dark, quadrupolar electronic state. A second B1u mode provokes the sharp plasmon-like peak to split due to the breaking of structural symmetry. Nonadiabatic coupling between a B2g vibrational mode and the β peak (a B1u electronic state) gives rise to a B3u vibronic state, which can be identified as one of the p-band peaks that reside close in energy to the β peak energy. Overall, strong nonadiabatic coupling initiates plasmon decay into nearby electronic states in acenes, most importantly into dark states. These findings expand our knowledge about possible plasmon decay processes and pave the way for achieving high optical performance in acene-based materials such as graphene.
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Affiliation(s)
| | - Andrew Wildman
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - David B Lingerfelt
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States.,Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Xiaosong Li
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
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36
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Abstract
The absorption spectra for face-centered cubic nanoparticle dimers at various interparticle distances are investigated using time-dependent density functional tight binding. Both homodimers and heterodimers are investigated in this work. By studying nanoparticles at various interparticle distances and analyzing their vertical excitations, we found that as the interparticle distance decreases, a red shift arises from contributions of the transition dipole moment that are aligned along the z-axis with nondegenerate features; blue shifts occur for peaks that originate from transition dipole moment components in the x and y directions with double degeneracy. When the nanoparticles are similar in size, the features in the absorption spectra become more sensitive to the interparticle distances. The best-fit curves from vertical excitation energy in the form of AR-b for ΔEredshift/ΔEblueshift vs R are determined. In this way, we determined trends for absorption peak shifts and how these depend on the interparticle distance.
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Affiliation(s)
- Zhen Liu
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, USA
| | - Fahri Alkan
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, USA
| | - Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, USA
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37
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Han BL, Liu Z, Feng L, Wang Z, Gupta RK, Aikens CM, Tung CH, Sun D. Polymorphism in Atomically Precise Cu23 Nanocluster Incorporating Tetrahedral [Cu4]0 Kernel. J Am Chem Soc 2020; 142:5834-5841. [DOI: 10.1021/jacs.0c01053] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Bao-Liang Han
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, People’s Republic of China
| | - Zhen Liu
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Lei Feng
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, People’s Republic of China
| | - Zhi Wang
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, People’s Republic of China
| | - Rakesh Kumar Gupta
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, People’s Republic of China
| | - Christine M. Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Chen-Ho Tung
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, People’s Republic of China
| | - Di Sun
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, People’s Republic of China
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, and School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, People’s Republic of China
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38
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Matus MF, Malola S, Kinder Bonilla E, Barngrover BM, Aikens CM, Häkkinen H. A topological isomer of the Au 25(SR) 18- nanocluster. Chem Commun (Camb) 2020; 56:8087-8090. [PMID: 32543631 DOI: 10.1039/d0cc03334k] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Energetically low-lying structural isomers of the much-studied thiolate-protected gold cluster Au25(SR)18- are discovered from extensive (80 ns) molecular dynamics (MD) simulations using the reactive molecular force field ReaxFF and confirmed by density functional theory (DFT). A particularly interesting isomer is found, which is topologically connected to the known crystal structure by a low-barrier collective rotation of the icosahedral Au13 core. The isomerization takes place without breaking of any Au-S bonds. The predicted isomer is essentially iso-energetic with the known Au25(SR)18- structure, but has a distinctly different optical spectrum. It has a significantly larger collision cross-section as compared to that of the known structure, which suggests it could be detectable in gas phase ion-mobility mass spectrometry.
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Affiliation(s)
- María Francisca Matus
- Departments of Physics and Chemistry, Nanoscience Center, University of Jyväskylä, FI-40014 Jyväskylä, Finland.
| | - Sami Malola
- Departments of Physics and Chemistry, Nanoscience Center, University of Jyväskylä, FI-40014 Jyväskylä, Finland.
| | | | - Brian M Barngrover
- Department of Chemistry, Kansas State University, Manhattan, KS 66506, USA and Department of Chemistry, Stephen F. Austin State University, Nacogdoches, TX 75962, USA
| | - Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan, KS 66506, USA
| | - Hannu Häkkinen
- Departments of Physics and Chemistry, Nanoscience Center, University of Jyväskylä, FI-40014 Jyväskylä, Finland.
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39
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Senanayake RD, Aikens CM. Electronic relaxation dynamics in [Au25(SR)18]−1 (R = CH3, C2H5, C3H7, MPA, PET) thiolate-protected nanoclusters. Phys Chem Chem Phys 2020; 22:5272-5285. [DOI: 10.1039/c9cp04039k] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Excited state decay times in thiolate-stabilized gold nanoclusters exhibit a degree of dependence on the passivating ligand.
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40
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Weerawardene KLDM, Pandeya P, Zhou M, Chen Y, Jin R, Aikens CM. Luminescence and Electron Dynamics in Atomically Precise Nanoclusters with Eight Superatomic Electrons. J Am Chem Soc 2019; 141:18715-18726. [DOI: 10.1021/jacs.9b07626] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
| | - Pratima Pandeya
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Meng Zhou
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Yuxiang Chen
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Rongchao Jin
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Christine M. Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
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41
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Alkan F, Aikens CM. Understanding plasmon coupling in nanoparticle dimers using molecular orbitals and configuration interaction. Phys Chem Chem Phys 2019; 21:23065-23075. [PMID: 31602447 DOI: 10.1039/c9cp03890f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
We perform a theoretical investigation of the electronic structure and optical properties of atomic nanowire and nanorod dimers using DFT and TDDFT. In both systems at separation distances larger than 0.75 nm, optical spectra show a single feature that resembles the bonding dipole plasmon (BDP) mode. A configuration interaction (CI) analysis shows that the BDP mode arises from constructive coupling of transitions, whereas the destructive coupling does not produce significant oscillator strength for such separation distances. At shorter separation distances, both constructive and destructive coupling produce oscillator strength due to wave-function overlap, which results in multiple features in the calculated spectra. Our analysis shows that a charge-transfer plasmon (CTP) mode arises from destructive coupling of transitions, whereas the BDP results from constructive coupling of the same transitions at shorter separation distances. Furthermore, the coupling elements between these transitions are shown to depend heavily on the amount of exact Hartree-Fock exchange (HFX) in the functional, which affects the splitting of CTP and BDP modes. With 50% HFX or more, the CTP and BDP modes mainly merge into a single feature in the spectra. These findings suggest that the effects of exact exchange must be assessed during the prediction of CTP modes in plasmonic systems.
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Affiliation(s)
- Fahri Alkan
- Department of Material Science & Nanotechnology Engineering, Abdullah Gül University, Kayseri 38080, Turkey
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42
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Kuda-Singappulige GU, Aikens CM. Geometrical and Electronic Structure, Stability, and Optical Absorption Spectra Comparisons between Thiolate- and Chloride-Stabilized Gold Nanoclusters. J Phys Chem A 2019; 123:9712-9720. [DOI: 10.1021/acs.jpca.9b06598] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
| | - Christine M. Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
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43
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Senanayake RD, Aikens CM. Theoretical investigation of relaxation dynamics in the Au18(SH)14 thiolate-protected gold nanocluster. J Chem Phys 2019; 151:094702. [DOI: 10.1063/1.5116902] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
| | - Christine M. Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, USA
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44
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Weerawardene KLDM, Aikens CM. Theoretical Investigation of Water Oxidation Mechanism on Pure Manganese and Ca-Doped Bimetal Oxide Complexes. J Phys Chem A 2019; 123:6152-6159. [DOI: 10.1021/acs.jpca.9b02652] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Christine M. Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
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45
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Zhang SS, Alkan F, Su HF, Aikens CM, Tung CH, Sun D. [Ag48(C≡CtBu)20(CrO4)7]: An Atomically Precise Silver Nanocluster Co-protected by Inorganic and Organic Ligands. J Am Chem Soc 2019; 141:4460-4467. [DOI: 10.1021/jacs.9b00703] [Citation(s) in RCA: 108] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Shan-Shan Zhang
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, People’s Republic of China
| | - Fahri Alkan
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Hai-Feng Su
- State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, People’s Republic of China
| | - Christine M. Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Chen-Ho Tung
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, People’s Republic of China
| | - Di Sun
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, People’s Republic of China
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46
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Zhang SS, Senanayake RD, Zhao QQ, Su HF, Aikens CM, Wang XP, Tung CH, Sun D, Zheng LS. [Au18(dppm)6Cl4]4+: a phosphine-protected gold nanocluster with rich charge states. Dalton Trans 2019; 48:3635-3640. [DOI: 10.1039/c9dt00042a] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A diphosphine-protected 18-gold-atom nanocluster was isolated via a facile reduction of an AuI precursor by NaBH4.
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Affiliation(s)
- Shan-Shan Zhang
- Key Laboratory of Colloid and Interface Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- and State Key Laboratory of Crystal Materials
- Shandong University
| | | | - Quan-Qin Zhao
- Key Laboratory of Colloid and Interface Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- and State Key Laboratory of Crystal Materials
- Shandong University
| | - Hai-Feng Su
- State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen 361005
- People's Republic of China
| | | | - Xing-Po Wang
- Key Laboratory of Colloid and Interface Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- and State Key Laboratory of Crystal Materials
- Shandong University
| | - Chen-Ho Tung
- Key Laboratory of Colloid and Interface Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- and State Key Laboratory of Crystal Materials
- Shandong University
| | - Di Sun
- Key Laboratory of Colloid and Interface Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- and State Key Laboratory of Crystal Materials
- Shandong University
| | - Lan-Sun Zheng
- State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen 361005
- People's Republic of China
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47
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Aikens CM. Electronic and Geometric Structure, Optical Properties, and Excited State Behavior in Atomically Precise Thiolate-Stabilized Noble Metal Nanoclusters. Acc Chem Res 2018; 51:3065-3073. [PMID: 30444598 DOI: 10.1021/acs.accounts.8b00364] [Citation(s) in RCA: 165] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Ligand-protected noble metal nanoclusters are of interest for their potential applications in areas such as bioimaging, catalysis, photocatalysis, and solar energy harvesting. These nanoclusters can be prepared with atomic precision, which means that their stoichiometries can be ascertained; the properties of these nanoclusters can vary significantly depending on the exact stoichiometry and geometric structure of the system. This leads to important questions such as: What are the general principles that underlie the physical properties of these nanoclusters? Do these principles hold for all systems? What properties can be "tuned" by varying the size and composition of the system? In this Account, we describe research that has been performed to analyze the electronic structure, linear optical absorption, and excited state dynamics of thiolate-stabilized noble metal nanoclusters. We focus primarily on two systems, Au25(SR)18- and Au38(SR)24, as models for understanding the principles underlying the electronic structure, optical properties, luminescence, and transient absorption in these systems. In these nanoclusters, the orbitals near the HOMO-LUMO gap primarily arise from atomic 6sp orbitals located on Au atoms in the gold core. The resulting nanocluster orbitals are delocalized throughout the core of these systems. Below the core-based orbitals lies a set of orbitals that are primarily composed of Au 5d and S 3p atomic orbitals from atoms located around the exterior gold-thiolate oligomer motifs. This set of orbitals has a higher density of states than the set arising from the core 6sp orbitals. Optical absorption peaks in the near-infrared and visible regions of the absorption spectrum arise from excitations between core orbitals (lowest energy peaks) and excitations from oligomer-based orbitals to core-based orbitals (higher energy peaks). Nanoclusters with different stoichiometries have varying gaps between the core orbitals themselves as well as between the band of oligomer-based orbitals and the band of core orbitals. These gaps can slow down nonradiative electron transfer between excited states that have different character; the excited state electron and hole dynamics depend on these gaps. Nanoclusters with different stoichiometries also exhibit different luminescence properties. Depending on factors that may include the symmetry of the system and the rigidity of the core, the nanocluster can undergo large or small nuclear changes upon photoexcitation, which affects the observed Stokes shift in these systems. This dependence on stoichiometry and composition suggests that the size and the corresponding geometry of the nanocluster is an important variable that can be used to tune the properties of interest. How does doping affect these principles? Replacement of gold atoms with silver atoms changes the energetics of the sp and d atomic orbitals that make up the nanocluster orbitals. Silver atoms have higher energy sp orbitals, and the resulting nanocluster orbitals are shifted in energy as well. This affects the HOMO-LUMO gap, the oscillator strength for transitions, the spacings between the different bands of orbitals, and, as a consequence, the Stokes shift and excited state dynamics of these systems. This suggests that nanocluster doping is one way to control and tune properties for use in potential applications.
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Affiliation(s)
- Christine M. Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
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48
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Liu JY, Alkan F, Wang Z, Zhang ZY, Kurmoo M, Yan Z, Zhao QQ, Aikens CM, Tung CH, Sun D. Different Silver Nanoparticles in One Crystal: Ag210
(
i
PrPhS)71
(Ph3
P)5
Cl and Ag211
(
i
PrPhS)71
(Ph3
P)6
Cl. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201810772] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jun-Yan Liu
- Key Lab of Colloid and Interface Chemistry; Ministry of Education; School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 P. R. China
| | - Fahri Alkan
- Department of Chemistry; Kansas State University; Manhattan KS 66506 USA
| | - Zhi Wang
- Key Lab of Colloid and Interface Chemistry; Ministry of Education; School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 P. R. China
| | - Zhen-Yi Zhang
- Bruker (Beijing) Scientific Technology Co., Ltd.; P. R. China
| | - Mohamedally Kurmoo
- Institut de Chimie de Strasbourg; Université de Strasbourg, CNRS-UMR 7177; 4 rue Blaise Pascal 67008 Strasbourg Cedex France
| | - Zier Yan
- Rigaku Beijing Corporation; P. R. China
| | - Quan-Qin Zhao
- Key Lab of Colloid and Interface Chemistry; Ministry of Education; School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 P. R. China
| | | | - Chen-Ho Tung
- Key Lab of Colloid and Interface Chemistry; Ministry of Education; School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 P. R. China
| | - Di Sun
- Key Lab of Colloid and Interface Chemistry; Ministry of Education; School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 P. R. China
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49
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Liu JY, Alkan F, Wang Z, Zhang ZY, Kurmoo M, Yan Z, Zhao QQ, Aikens CM, Tung CH, Sun D. Different Silver Nanoparticles in One Crystal: Ag210
(
i
PrPhS)71
(Ph3
P)5
Cl and Ag211
(
i
PrPhS)71
(Ph3
P)6
Cl. Angew Chem Int Ed Engl 2018; 58:195-199. [DOI: 10.1002/anie.201810772] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Jun-Yan Liu
- Key Lab of Colloid and Interface Chemistry; Ministry of Education; School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 P. R. China
| | - Fahri Alkan
- Department of Chemistry; Kansas State University; Manhattan KS 66506 USA
| | - Zhi Wang
- Key Lab of Colloid and Interface Chemistry; Ministry of Education; School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 P. R. China
| | - Zhen-Yi Zhang
- Bruker (Beijing) Scientific Technology Co., Ltd.; P. R. China
| | - Mohamedally Kurmoo
- Institut de Chimie de Strasbourg; Université de Strasbourg, CNRS-UMR 7177; 4 rue Blaise Pascal 67008 Strasbourg Cedex France
| | - Zier Yan
- Rigaku Beijing Corporation; P. R. China
| | - Quan-Qin Zhao
- Key Lab of Colloid and Interface Chemistry; Ministry of Education; School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 P. R. China
| | | | - Chen-Ho Tung
- Key Lab of Colloid and Interface Chemistry; Ministry of Education; School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 P. R. China
| | - Di Sun
- Key Lab of Colloid and Interface Chemistry; Ministry of Education; School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 P. R. China
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50
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Alkan F, Aikens CM. TD-DFT and TD-DFTB Investigation of the Optical Properties and Electronic Structure of Silver Nanorods and Nanorod Dimers. J Phys Chem C Nanomater Interfaces 2018; 122:23639-23650. [PMID: 30364415 PMCID: PMC6196343 DOI: 10.1021/acs.jpcc.8b05196] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Indexed: 05/13/2023]
Abstract
Here, we perform theoretical investigation using time-dependent density functional theory (TD-DFT) and time-dependent density functional tight binding (TD-DFTB) for the electronic structure and optical properties of silver nanorods. TD-DFTB generally performs well for the accurate description of optical properties with respect to the size and type of dimer assembly of silver nanorods compared to TD-DFT. However, the energies and intensities of the longitudinal and transverse peaks of the nanorods are somewhat underestimated with TD-DFTB compared to the values calculated at the TD-DFT level. By exploiting the computational efficiency of TD-DFTB, we also extend our investigation to longer nanorods and their dimers containing up to ∼2000 atoms. Our results show that the coupling between nanorods and the resulting optical properties of the dimer assemblies are quite dependent on the length of the monomers. In all cases, the energy shifts in dimers as a function of the gap distance deviate significantly from the dipole-dipole interaction model. Moreover, a comparison of the best-fit curves for the dependence of the fractional shifts (Δλ/λ0) on nanorod length indicates that the parameters of the plasmon ruler equation depend on the length of the nanorods and the type of the assembly rather than approaching a universal value. These insights are enabled by the computational efficiency of TD-DFTB and its ability to treat quantum mechanical effects in large nanorod dimer systems.
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