Chiral Inorganic Nanomaterials Characterized by Advanced TEM: A Qualitative and Quantitative Study
Jiaqi Chen1,2, Xuegang Chen1,2, Ri-Ichi Murakami1,2
1School of Mechanical Engineering, Chengdu University, Chengdu, 610106, China.
Transmission electron microscopy (TEM) techniques now enable direct visualization of chiral inorganic nanomaterials (CINMs). This review details TEM advancements for analyzing CINM chirality, from atomic features to assembled structures.
Area of Science:
- Materials Science
- Nanotechnology
- Analytical Chemistry
Background:
- Chiral inorganic nanomaterials (CINMs) exhibit unique optical, electronic, and catalytic properties.
- Traditional methods analyze CINMs on an ensemble level, lacking direct structural visualization.
- Advancements in transmission electron microscopy (TEM) are crucial for detailed CINM characterization.
Purpose of the Study:
- To review current advancements in TEM technologies for CINM characterization.
- To emphasize qualitative and quantitative analysis of chiral features in CINMs.
- To address the evolution of chiral structures using in-situ and ex-situ TEM.
Main Methods:
- Qualitative analysis of chiral atomic-level features in 0D, 1D, and 2D nanocrystals, and assembled nanomaterials.
- Quantitative methods including 3D electron tomography for chirality determination.
- In-situ and ex-situ TEM for monitoring the evolution of chiral structures.
Main Results:
- TEM techniques provide direct structural visualization of CINMs, complementing ensemble measurements.
- Chirality-based TEM advancements facilitate detailed analysis of atomic-level chiral features.
- 3D electron tomography and time-resolved TEM offer quantitative and dynamic insights into CINM chirality.
Conclusions:
- TEM technologies are essential for the qualitative, quantitative, and real-time analysis of CINMs.
- This review provides a roadmap for future advancements in TEM for chiral nanomaterials.
- Innovations in TEM will drive progress in chiral nanomaterials and their applications.
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