Subtopic Deep Dive
Crystal Structures of Atomically Precise Nanoclusters
Research Guide
What is Crystal Structures of Atomically Precise Nanoclusters?
Crystal structures of atomically precise nanoclusters refer to the atomic arrangements determined by single-crystal X-ray crystallography in noble metal clusters featuring metallic cores, ligand shells, and chirality.
Researchers use X-ray diffraction to resolve structures of gold and silver nanoclusters with exact atom counts, such as Au38 and Au22. These reveal superatom shells and isomerism (Dolamic et al., 2012; 487 citations; Chen et al., 2013; 241 citations). Over 10 high-citation papers since 2012 document structures enabling superatom theory.
Why It Matters
Determined crystal structures enable rational design of nanoclusters for catalysis and plasmonics, as in Pt6 clusters for hydrogen electro-oxidation (Wang et al., 2022; 211 citations). Structural databases support property prediction, advancing luminescent applications (Chevrier, 2012; 181 citations; Sun and Sakka, 2013; 179 citations). Tian et al. (2015; 317 citations) showed isomerism impacts electronic properties, guiding synthesis for tailored optics.
Key Research Challenges
Structural Isomer Resolution
Multiple isomers complicate unique structure identification via X-ray. Tian et al. (2015; 317 citations) revealed gold nanoparticle isomers. Advanced refinement needed for precise differentiation.
Chirality Determination
Enantioseparation exposes chiral features in achiral ligand clusters. Dolamic et al. (2012; 487 citations) first separated Au38 enantiomers. Circular dichroism spectra analysis remains challenging.
Ligand-Core Interface Modeling
Diphosphine and thiolate ligands induce specific cores like Au22. Chen et al. (2013; 241 citations) used X-ray for diphosphine Au22. Predicting interface stability hinders superatom models.
Essential Papers
First enantioseparation and circular dichroism spectra of Au38 clusters protected by achiral ligands
Igor Dolamic, Stefan Knoppe, Amala Dass et al. · 2012 · Nature Communications · 487 citations
Structural isomerism in gold nanoparticles revealed by X-ray crystallography
Shubo Tian, Yizhi Li, Man‐Bo Li et al. · 2015 · Nature Communications · 317 citations
Understanding seed-mediated growth of gold nanoclusters at molecular level
Qiaofeng Yao, Xun Yuan, Victor Fung et al. · 2017 · Nature Communications · 290 citations
Abstract The continuous development of total synthesis chemistry has allowed many organic and biomolecules to be produced with known synthetic history–that is, a complete set of step reactions in t...
Plasmonic twinned silver nanoparticles with molecular precision
Huayan Yang, Yu Wang, Xi Chen et al. · 2016 · Nature Communications · 272 citations
Toward an Atomic-Level Understanding of Size-Specific Properties of Protected and Stabilized Gold Clusters
Tatsuya Tsukuda · 2012 · Bulletin of the Chemical Society of Japan · 242 citations
Abstract Metal clusters consisting of fewer than 100 atoms (diameter <2 nm) are highly promising as a new class of building units for functional materials because of their novel and size-dep...
Controlling Gold Nanoclusters by Diphospine Ligands
Jing Chen, Qian-Fan Zhang, Timary A. Bonaccorso et al. · 2013 · Journal of the American Chemical Society · 241 citations
We report the synthesis and structure determination of a new Au22 nanocluster coordinated by six bidentate diphosphine ligands: 1,8-bis(diphenylphosphino) octane (L(8) for short). Single crystal X-...
Atomic-precision Pt6 nanoclusters for enhanced hydrogen electro-oxidation
Xiaoning Wang, Lianming Zhao, Xuejin Li et al. · 2022 · Nature Communications · 211 citations
Abstract The discord between the insufficient abundance and the excellent electrocatalytic activity of Pt urgently requires its atomic-level engineering for minimal Pt dosage yet maximized electroc...
Reading Guide
Foundational Papers
Start with Dolamic et al. (2012; 487 citations) for Au38 chirality X-ray; Tsukuda (2012; 242 citations) for size-property links; Chen et al. (2013; 241 citations) for diphosphine Au22 structure.
Recent Advances
Wang et al. (2022; 211 citations) Pt6 electrocatalysis; Sakthivel and Dass (2018; 195 citations) thiolate series trends.
Core Methods
Single-crystal X-ray diffraction, circular dichroism for chirality, DFT validation of superatom shells.
How PapersFlow Helps You Research Crystal Structures of Atomically Precise Nanoclusters
Discover & Search
Research Agent uses searchPapers and citationGraph to map 487-citation Dolamic et al. (2012) Au38 enantioseparation hub, revealing connections to Tsukuda (2012; 242 citations) superatom theory. exaSearch finds low-citation silver twinned structures like Yang et al. (2016), while findSimilarPapers expands from Tian et al. (2015) isomerism.
Analyze & Verify
Analysis Agent applies readPaperContent to extract Au22 coordinates from Chen et al. (2013), then runPythonAnalysis with NumPy for bond length statistics and matplotlib visualization. verifyResponse (CoVe) with GRADE grading checks structural claims against Wang et al. (2022) Pt6 data, ensuring isomer verification.
Synthesize & Write
Synthesis Agent detects gaps in chirality-structure links post-Dolamic (2012), flagging contradictions in ligand effects. Writing Agent uses latexEditText for structure reports, latexSyncCitations for 10+ papers, and latexCompile for crystal diagrams; exportMermaid generates superatom shell flowcharts.
Use Cases
"Analyze bond lengths in Au22 diphosphine nanocluster from Chen 2013."
Research Agent → searchPapers('Chen Au22 2013') → Analysis Agent → readPaperContent → runPythonAnalysis (parse coordinates, compute NumPy statistics, matplotlib plot) → researcher gets bond length CSV and verified plot.
"Write LaTeX review of Au38 chirality structures."
Research Agent → citationGraph('Dolamic 2012') → Synthesis Agent → gap detection → Writing Agent → latexEditText + latexSyncCitations (Dolamic/Tian) + latexCompile → researcher gets compiled PDF with citations.
"Find GitHub repos simulating gold nanocluster structures."
Research Agent → searchPapers('gold nanocluster DFT') → Code Discovery → paperExtractUrls → paperFindGithubRepo → githubRepoInspect → researcher gets repo links with structure prediction code.
Automated Workflows
Deep Research workflow scans 50+ papers from Tsukuda (2012), generating structured reports on core evolution. DeepScan's 7-step chain verifies Yao et al. (2017) seed growth structures with CoVe checkpoints. Theorizer builds superatom models from Dolamic/Tian isomers.
Frequently Asked Questions
What defines crystal structures of atomically precise nanoclusters?
Atomic arrangements from single-crystal X-ray of noble metal clusters with exact atom counts, metallic cores, and ligand shells.
What are key methods for determining these structures?
Single-crystal X-ray crystallography resolves cores and chirality; electrospray ionization mass confirms composition (Chen et al., 2013).
What are the most cited papers?
Dolamic et al. (2012; 487 citations) on Au38 enantioseparation; Tian et al. (2015; 317 citations) on gold isomers.
What open problems exist?
Resolving low-symmetry isomers, predicting ligand-induced chirality, and scaling to non-gold metals beyond Pt6 (Wang et al., 2022).
Research Nanocluster Synthesis and Applications with AI
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