A universal synthetic strategy for noncentrosymmetric lead oxyhalide frameworks with strong second-harmonic generation
Chen Sun, Xingxing Jiang, Feiyuan Gong, Xiaotian Zhang, Chao Wu, Zheshuai Lin, Chi Zhang, Honghan Fei · 2026
Read A universal synthetic strategy for noncentrosymmetric lead oxyhalide frameworks with strong second-harmonic generation by Chen Sun, Xingxing Jiang, Feiyuan Gong, Xiaotian Zhang, Chao Wu, Zheshuai Lin, Chi Zhang, Honghan Fei (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-13537042.txt.
Description
Sun and co-authors report a recipe, published in 2026, for crystals that double the frequency of light. Such crystals serve in lasers and optical devices, but they must lack a center of symmetry, a property most structures avoid. Lead-based materials are flexible and tunable, yet their building blocks like to sit in balanced shapes that cancel the effect. The team combined two symmetry-breaking tricks at once: flat aromatic units and lopsided lead blocks.
The paired units align in the same direction, building a strong overall polarization. The resulting frameworks convert light with a strong response. The strategy worked across a family of lead oxyhalide materials, not just one lucky case. The authors present it as a general route, open to other mixes of organic and inorganic parts. Reliable ways to force asymmetry are prized in optical materials design.
Catalog record
| CREATOR | Chen Sun, Xingxing Jiang, Feiyuan Gong, Xiaotian Zhang, Chao Wu, Zheshuai Lin, Chi Zhang, Honghan Fei |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 46 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |