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Room Temperature Synthesis of Covalent–Organic Framework Films through Vapor-Assisted Conversion

2014; American Chemical Society; Volume: 137; Issue: 3 Linguagem: Inglês

10.1021/ja510895m

1943-2984

Dana D. Medina, Julian M. Rotter, Yinghong Hu, M. Doḡru, Veronika Werner, Florian Auras, John T. Markiewicz, Paul Knochel, Thomas Bein,

Luminescence and Fluorescent Materials

We describe the facile synthesis of several two-dimensional covalent-organic frameworks (2D COFs) as films by vapor-assisted conversion at room temperature. High-quality films of benzodithiophene-containing BDT-COF and COF-5 with tunable thickness were synthesized under different conditions on various substrates. BDT-COF films of several micrometer thickness exhibit mesoporosity as well as textural porosity, whereas thinner BDT-COF films materialize as a cohesive dense layer. In addition, we studied the formation of COF-5 films with different solvent mixture compositions serving as vapor source. Room temperature vapor-assisted conversion is an excellent method to form COF films of fragile precursors and on sensitive substrates.