Journal
CHEMISTRYOPEN
Volume 9, Issue 3, Pages 381-385Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/open.202000041
Keywords
2D polymers; dynamic chemistry; interfacial synthesis; supramolecular assembly; aggregation induced emission
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A fluorescent monolayered two-dimensional polymer (2DP) containing both tetraphenylethylene (TPE) and imine linkages is synthesized at air-water interface using the Langmuir-Blodgett method. We designed TPE-based monomers with long distances between the TPE and the imine linkages to avoid the charge transfer and therefore keep the fluorescence. A monolayered 2DP provided with more than 104 mu m(2) in domain size and around 0.8 nm thickness was obtained through a successive Schiff base reaction at air-water interface. The nanostructures and fluorescent property of 2DP films were characterized by optical microscopy, SEM, TEM, AFM and fluorescence spectrum. Most importantly, the tip-enhanced Raman spectroscopy (TERS) was utilized here to confirm the success of the polycondensation of monolayered 2DP.
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