Title： | Thermal-Responsive Self-Assembly of Organic Crystals with Asymmetric Architectures |
Authors： | Ying-Xin Ma, Ya-Nan Zhu and Xue-Dong Wang* |
Institution： | State Key Laboratory of Bioinspired Interfacial Materials Science, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, P. R. China. |
Abstract： | The miniaturization and integration of electronic/photonic devices demand precise control over light at the micro-scale. However, achieving tailored optical anisotropy through intrinsic material design, rather than external components, remains a significant challenge. Herein, we report a general and programmable strategy for the growth of one-dimensional organic crystals with precisely tunable asymmetric architectures via a spatially defined temperature gradient. By leveraging the competitive, facet-dependent growth kinetics under a thermal bias, continuous and precise control over the structural asymmetry is achieved in single crystals, with a tunable morphological anisotropy ranging from 9% to 81%. The resulting asymmetric crystals exhibit a pronounced direction-dependent optical response, yielding a photoluminescence intensity contrast ratio as high as 113.3, which scales directly with the degree of structural asymmetry. This work establishes a material-based platform for applying direction-dependent photonic properties directly into crystal morphology, paving the way for advanced organic photonic materials with built-in anisotropy. |
IF： | 29.1 |
Link： | https://advanced.onlinelibrary.wiley.com/doi/10.1002/adma.73910 |
Editor: Guo jia