Optically Active Nanostructured ZnO Films

Yingying Duan; Lu Han; Jialiang Zhang; Shunsuke Asahina; Zhehao Huang; Lin Shi; Bo Wang; Yuanyuan Cao; Yuan Yao; Liguo Ma; Cui Wang; Rina K Dukor; Lu Sun; Chun Jiang; Zhiyong Tang; Laurence A Nafie; Shunai Che

doi:10.1002/anie.201507502

Optically Active Nanostructured ZnO Films

Angew Chem Int Ed Engl. 2015 Dec 7;54(50):15170-5. doi: 10.1002/anie.201507502. Epub 2015 Oct 22.

Authors

Yingying Duan¹, Lu Han¹, Jialiang Zhang¹, Shunsuke Asahina², Zhehao Huang¹, Lin Shi³, Bo Wang⁴, Yuanyuan Cao¹, Yuan Yao¹, Liguo Ma¹, Cui Wang¹, Rina K Dukor⁴, Lu Sun⁵, Chun Jiang⁵, Zhiyong Tang³, Laurence A Nafie^{4

6}, Shunai Che⁷

Affiliations

¹ School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240 (P.R. China) http://che.sjtu.edu.cn.
² SMBU, JEOL, Akishima, Tokyo 196-8558 (Japan).
³ Key Laboratory of Nanosystem and Hierarchical Fabrication, Chinese Academy of Sciences, National Center for Nanoscience and Technology, No.11, Beiyitiao, Zhongguancun, Beijing, 100190 (P. R. China).
⁴ BioTools, Inc., 17546 Bee Line Hwy, Jupiter, FL, 33458 (USA).
⁵ School of Electronic Information and Electrical Engineering, State Key Laboratory of Advanced Optical Communication System and Network, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240 (P.R. China).
⁶ Department of Chemistry, Syracuse University, Syracuse, NY, 13244 (USA).
⁷ School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240 (P.R. China) http://che.sjtu.edu.cn. [email protected].

PMID: 26489386
DOI: 10.1002/anie.201507502

Abstract

Inorganic nanomaterials endowed with hierarchical chirality could open new horizons in physical theory and applications because of their fascinating properties. Here, we report chiral ZnO films coated on quartz substrates with a hierarchical nanostructure ranging from atomic to micrometer scale. Three levels of hierarchical chirality exist in the ZnO films: helical ZnO crystalline structures that form primary helically coiled nanoplates, secondary helical stacking of these nanoplates, and tertiary nanoscale circinate aggregates formed by several stacked nanoplates. These films exhibited optical activity (OA) at 380 nm and in the range of 200-800 nm and created circularly polarized luminescence centered at 510 nm and Raman OA at 50-1400 cm(-1) , which was attributed to electronic transitions, scattering, photoluminescent emission, and Raman scattering in a dissymmetric electric field. The unprecedented strong OA could be attributed to multiple light scattering and absorption-enhanced light harvesting in the hierarchical structures.

Keywords: Raman optical activity; chirality; circular dichroism; inorganic films; luminescence.

Publication types

Research Support, Non-U.S. Gov't