Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 60, Issue 30, Pages 16547-16553Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202103765
Keywords
Bubble template; High-resolution patterning; Interface confined assembly; Molecular aggregate; Organic molecules
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Funding
- National Key R&D Program of China [2018YFA0208501, 2018YFA0703200]
- National Nature Science Foundation of China [52003276, 51803217, 51773206, 91963212, 51961145102]
- Beijing National Laboratory for Molecular Sciences [BNLMS-CXXM-202005, 2019BMS20003]
- K. C. Wong Education Foundation
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This study demonstrates a new approach to pattern functional organic molecules using a foam template and TPPS system, showing good uniformity in nanoscale resolution and proposing an empirical rule for molecular patterning approach.
We demonstrate a new approach to pattern functional organic molecules with a template of foams, and achieve a resolution of sub 100 nm. The bubble-assisted assembly (BAA) process is consisted of two periods, including bubble evolution and molecular assembly, which are dominated by the Laplace pressure and molecular interactions, respectively. Using TPPS (meso-tetra(4-sulfonatophenyl) porphyrin), we systematically investigate the patterns and assembly behaviour in the bubble system with a series of characterizations, which show good uniformity in nanoscale resolution. Theoretical simulations reveal that TPPS's J-aggregates contribute to the ordered construction of molecular patterns. Finally, we propose an empirical rule for molecular patterning approach, that the surfactant and functional molecules should have the same type of charge in a two-component system. This approach exhibits promising feasibility to assemble molecular patterns at nanoscale resolution for micro/nano functional devices.
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