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Photo-Assisted Bottom-Up Synthesis of Orange Phosphorus
Pengcheng Qiu1, Jiameng Wang1, Takahiro Kojima1
1Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan.
Angewandte Chemie (International Ed. in English)
|December 23, 2024
Summary
Researchers synthesized a novel orange phosphorus allotrope, forming 1D polar pentagonal tubes. This new material exhibits excellent piezoresistivity, outperforming existing 2D materials for strain sensor applications.
Area of Science:
- Materials Science
- Solid State Chemistry
- Nanotechnology
Background:
- Theoretical prediction of a new phosphorus allotrope with polar structure and potential applications.
- Challenges in synthesizing isolated strands of this allotrope due to interchain bonding.
Purpose of the Study:
- To successfully synthesize the predicted orange phosphorus allotrope.
- To characterize its molecular structure and properties.
- To evaluate its potential for strain sensor applications.
Main Methods:
- Photo-assisted synthesis using amorphous Na2P16 precursors and green laser irradiation.
- 3D electron diffraction crystallography for structural analysis.
- Piezoresistivity and strain-induced Raman shift measurements.
Main Results:
- Successful synthesis of orange phosphorus, a 1D chain allotrope.
- Determination of its molecular structure as polar pentagonal tubes ([P8]P2[ repeat units).
- Demonstrated excellent piezoresistivity with a high gauge factor, exceeding 2D materials.
Conclusions:
- Orange phosphorus is a novel, synthesizable allotrope of phosphorus.
- Its unique 1D polar structure leads to superior piezoresistive properties.
- High potential for advanced strain sensor applications.
