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Yang X, Liu N, Zhao J, Zhou S. Luminescence properties of endohedrally doped group-IV clusters. J Chem Phys 2024; 160:234305. [PMID: 38899686 DOI: 10.1063/5.0214967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2024] [Accepted: 06/03/2024] [Indexed: 06/21/2024] Open
Abstract
Endohedrally doped clusters form a large category of cage clusters, with unique structures, diverse elemental compositions, and highly tunable electronic structures and physisochemical properties. They have been widely achieved in laboratory and may serve as functional building blocks for assembling new supermolecular structures and devices. In this paper, for the first time, we disclosed the luminescence properties of endohedrally doped group-IV clusters by time-dependent density functional theory calculations. A total of 64 cage clusters have been explored in terms of stability, emission wavelength, and the energy difference between the first excited singlet and triplet states. The key geometric and electronic factors governing the photophysical properties of these cage clusters were unveiled, to provide crucial insights for crafting atomically precise nanoclusters for optical and optoelectronic applications.
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Affiliation(s)
- Xiaowei Yang
- Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian 116024, China
| | - Nanshu Liu
- Beijing Key Laboratory of Optoelectronic Functional Materials and Micro-Nano Devices, Department of Physics, Renmin University of China, Beijing 100872, People's Republic of China
- Key Laboratory of Quantum State Construction and Manipulation (Ministry of Education), Renmin University of China, Beijing 100872, China
| | - Jijun Zhao
- Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian 116024, China
- Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of Matter, Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics, South China Normal University, Guangzhou 510006, China
- Guangdong-Hong Kong Joint Laboratory of Quantum Matter, Frontier Research Institute for Physics, South China Normal University, Guangzhou 510006, China
| | - Si Zhou
- Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian 116024, China
- Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of Matter, Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics, South China Normal University, Guangzhou 510006, China
- Guangdong-Hong Kong Joint Laboratory of Quantum Matter, Frontier Research Institute for Physics, South China Normal University, Guangzhou 510006, China
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2
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Tian J, Hou L, Xia W, Wang Z, Tu Y, Pei W, Zhou S, Zhao J. Solar driven CO 2 hydrogenation to HCOOH on (TiO 2) n ( n = 1-6) atomic clusters. Phys Chem Chem Phys 2023; 25:28533-28540. [PMID: 37847520 DOI: 10.1039/d3cp03473a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2023]
Abstract
Artificial photosynthesis is a crucial reaction that addresses energy and environmental challenges by converting CO2 into fuels and value-added chemicals. However, efficient catalytic activity using earth-abundant materials can be challenging due to intrinsic limitations. Herein, we explore neutral (TiO2)n (n = 1-6) atomic clusters for CO2 hydrogenation via comprehensive ab initio calculations combined with time-dependent functional theory. Our results show that these (TiO2)n clusters exhibit outstanding thermodynamic stabilities and decent surficial activities for CO2 activation and H2 dissociation, both of which possess kinetic barriers down to 0-0.74 eV. We establish a relationship between the binding strength of *CO2 species and electron characterization for these (TiO2)n clusters. These clusters, which have a wide energy gap between the highest occupied molecular orbital (HOMO) and the lowest unoccpied molecular orbital (LUMO) that allows them to harvest the solar light in the ultraviolet regime, enabling efficient catalysis for driving the catalysis of CO2 conversion. They provide exclusive reaction channels and high selectivity for yielding HCOOH products via the carboxyl mechanism, involving the kinetic barrier of the limiting step of 0.74-1.25 eV. We also investigated the substrate effect on supported (TiO2)n clusters, with non-metallic substrates featuring inert surfaces serving as suitable options for anchoring (TiO2)n clusters while preserving their intrinsic activity and selectivity. These computational results have significant implications not only for meeting energy demands but also for mitigating carbon emissions by utilizing CO2 as an alternative feedstock rather than considering it solely as a greenhouse gas.
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Affiliation(s)
- Jiaqi Tian
- College of Physics Science and Technology, Yangzhou University, Yangzhou 225009, China.
| | - Lei Hou
- College of Physics Science and Technology, Yangzhou University, Yangzhou 225009, China.
| | - Weizhi Xia
- College of Physics Science and Technology, Yangzhou University, Yangzhou 225009, China.
| | - Zi Wang
- College of Physics Science and Technology, Yangzhou University, Yangzhou 225009, China.
| | - Yusong Tu
- College of Physics Science and Technology, Yangzhou University, Yangzhou 225009, China.
| | - Wei Pei
- College of Physics Science and Technology, Yangzhou University, Yangzhou 225009, China.
| | - Si Zhou
- School of Physics, South China Normal University, Guangzhou 510631, China
| | - Jijun Zhao
- Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China
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3
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Maneri AH, Krishnamurty S, Joshi K. Understanding the Stability of an Unprecedented Si-Be Bond within Quantum Confinement. ACS OMEGA 2023; 8:14814-14822. [PMID: 37125089 PMCID: PMC10134223 DOI: 10.1021/acsomega.3c01133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 03/29/2023] [Indexed: 05/03/2023]
Abstract
As of today, the Si-Be bond remains underexplored in the literature, and therefore its anomalous behavior continues to be an unsolved puzzle to date. Therefore, the present study aims at evaluating the integrity of an unprecedented Si-Be bond within quantum confinement. To accomplish this, first-principles-based calculation are performed on Be-doped silicon clusters with atomic sizes 6, 7, and 10. Silicon clusters are sequentially doped with one, two, and three Be atoms, and their thermal response is registered in the temperature range of 200-1500 K, which discloses several research findings. During the course of the simulations, the clusters face various thermal events such as solid cluster phase, rapid structural metamorphosis, and fragmentation. Si-Be nanoalloy clusters are noted to be thermally stable at lower temperatures (200-700 K); however, they begins to disintegrate earlier at a temperature as low as 800 K. This lower stability is attributed to the weak nature of Si and Be heteroatomic interactions, which is corroborated from the structural and electronic property analysis of the doped clusters. In addition to this, the performance of Be-doped clusters at finite temperatures is also compared with the thermal response of two other popular systems, viz., C- and B-doped silicon clusters.
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Affiliation(s)
- Asma Harun Maneri
- Physical
and Materials Chemistry Division, CSIR-National
Chemical Laboratory (CSIR-NCL), Pune 411008, India
- Academy
of Scientific and Innovative Research (AcSIR), Gaziabad 201002, India
| | - Sailaja Krishnamurty
- Physical
and Materials Chemistry Division, CSIR-National
Chemical Laboratory (CSIR-NCL), Pune 411008, India
- Academy
of Scientific and Innovative Research (AcSIR), Gaziabad 201002, India
- ,
| | - Krati Joshi
- Physical
and Materials Chemistry Division, CSIR-National
Chemical Laboratory (CSIR-NCL), Pune 411008, India
- ,
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Zhang L, Zhang JC, Shi LF, Cheng X, Chen JH, Sun WM. On the possibility of using the Ti@Si 16 superatom as a novel drug delivery carrier for different drugs: A DFT study. J Mol Graph Model 2023; 118:108378. [PMID: 36423518 DOI: 10.1016/j.jmgm.2022.108378] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 11/05/2022] [Accepted: 11/15/2022] [Indexed: 11/17/2022]
Abstract
The potential application of an experimentally synthesized superatom Ti@Si16 as a novel drug carrier for cisplatin (DDP), isoniazid (INH), acetylsalicylic acid (ASA), 5-fluorouracil (5-Fu), and favipiravir (FPV) has been explored by density functional theory. It is observed that the Pt atom of DDP can be effectively absorbed on Ti@Si16 via a "donation-back donation" electron transfer mechanism, resulting in a moderate adsorption energy of -19.95 kcal/mol for DDP@[Ti@Si16]. As for INH, it prefers to combine with Ti@Si16 via the N atom of pyridine ring by forming a strongly polar N-Si bond. Differently, the interaction between Ti@Si16 and the ASA, 5-Fu, and FPV drugs is dominated by the Van der Waals interaction. Our results reveal that DDP@[Ti@Si16] possesses a moderate recovery time under body temperature, which benefits the desorption of DDP from Ti@Si16. More importantly, the release of DDP drug from the Ti@Si16 surface can be effectively controlled by exerting small orientation external electric fields on the DDP@[Ti@Si16] complex. Therefore, this study demonstrates that Ti@Si16 can serve as a promising drug carrier for DDP, and thus will further expand its practical applications in the biomedical field.
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Affiliation(s)
- Li Zhang
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, The School of Pharmacy, Fujian Medical University, Fuzhou, 350108, PR China; Department of Pharmacy, Sanming First Hospital, Affiliated Hospital of Fujian Medical University, Sanming, 365000, Fujian Province, PR China
| | - Jia-Chen Zhang
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, The School of Pharmacy, Fujian Medical University, Fuzhou, 350108, PR China
| | - Ling-Fei Shi
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, The School of Pharmacy, Fujian Medical University, Fuzhou, 350108, PR China
| | - Xin Cheng
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, The School of Pharmacy, Fujian Medical University, Fuzhou, 350108, PR China
| | - Jing-Hua Chen
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, The School of Pharmacy, Fujian Medical University, Fuzhou, 350108, PR China.
| | - Wei-Ming Sun
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, The School of Pharmacy, Fujian Medical University, Fuzhou, 350108, PR China; School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui, 230026, PR China.
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Su Y, Wang C, Hong Z, Sun W. Thermal Disproportionation for the Synthesis of Silicon Nanocrystals and Their Photoluminescent Properties. Front Chem 2021; 9:721454. [PMID: 34458238 PMCID: PMC8397416 DOI: 10.3389/fchem.2021.721454] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 07/09/2021] [Indexed: 11/13/2022] Open
Abstract
In the past decades, silicon nanocrystals have received vast attention and have been widely studied owing to not only their advantages including nontoxicity, high availability, and abundance but also their unique luminescent properties distinct from bulk silicon. Among the various synthetic methods of silicon nanocrystals, thermal disproportionation of silicon suboxides (often with H as another major composing element) bears the superiorities of unsophisticated equipment requirements, feasible processing conditions, and precise control of nanocrystals size and structure, which guarantee a bright industrial application prospect. In this paper, we summarize the recent progress of thermal disproportionation chemistry for the synthesis of silicon nanocrystals, with the focus on the effects of temperature, Si/O ratio, and the surface groups on the resulting silicon nanocrystals’ structure and their corresponding photoluminescent properties. Moreover, the paradigmatic application scenarios of the photoluminescent silicon nanocrystals synthesized via this method are showcased or envisioned.
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Affiliation(s)
- Yize Su
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, China
| | - Chenhao Wang
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, China
| | - Zijian Hong
- Lab of Dielectric Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, China
| | - Wei Sun
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, China
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