journal article·2023-08Open access

Humidity‐Controlled Molecular Assembly and Photoisomerization Behavior with a Bubble‐Assisted Patterning Approach

Fanyi Min, Zhao‐Yang Zhang, Zhiyuan Qu, Jie Gao, Xiaosong Shi, Haoran Long, Yixin Li, Shengnan Chen, Dongfang Dong, Yuanping Yi, Lang Jiang, Juehan Yang, Tao Li, Yali Qiao, Yanlin Song

Small· Volume 19· Issue 35

Abstract

Abstract Precise control of molecular assembly is of great significance in the application of functional molecules. This work has systematically investigated the humidity effect in bubble‐assisted molecular assembly. This work finds humidity is critical in the evolution of the soft confined space, leading to the formation of microscale liquid confined space under high humidity, and nanoscale liquid confined space under low humidity. It is also revealed that the differences in surface wettability and adhesion play the key role. Consequently, a flat pattern with thermodynamically favorable ordered structure and a sharp pattern with dynamically favorable disordered structure are achieved, which show different solid‐state photoisomerization behaviors and photoresponsiveness. Interestingly, conductivity of sharp pattern with disordered structure is higher than that of flat pattern with layered ordered structure due to electronic transport mechanism of different spatial dimensions. This work opens a new way for manipulating the molecular self‐assembly to control the morphology and function of molecular patterns.
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Research context

OpenAlex topics: Block Copolymer Self-Assembly · Surface Chemistry and Catalysis · Surface Modification and Superhydrophobicity

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Green Printing Institute of Chemistry Chinese Academy of Sciences (ICCAS) Beijing National Laboratory for Molecular Sciences (BNLMS) University of the Chinese Academy of Sciences Beijing 100190 P. R. China

School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative Molecules Shanghai Key Laboratory of Electrical Insulation and Thermal Aging Key Laboratory of Thin Film and Microfabrication (Ministry of Education) Shanghai Jiao Tong University Shanghai 200240 P. R. China

Key Laboratory of Organic Solids Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China

State Key Laboratory of Superlattices and Microstructures Institute of Semiconductors Chinese Academy of Sciences Beijing 100083 China

Funding

National Natural Science Foundation of China · China Postdoctoral Science Foundation

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