%0 Journal Article %1 ANIE:ANIE201708526 %A Gole, Bappaditya %A Stepanenko, Vladimir %A Rager, Sabrina %A Grüne, Matthias %A Medina, Dana D. %A Bein, Thomas %A Würthner, Frank %A Beuerle, Florian %D 2018 %J Angew. Chem. Int. Ed. %K afm cells molecular myown organic %N 3 %P 846--850 %R 10.1002/anie.201708526 %T Microtubular Self-Assembly of Covalent Organic Frameworks %U http://dx.doi.org/10.1002/anie.201708526 %V 57 %X Despite significant progress in the synthesis of covalent organic frameworks (COFs), reports on the precise construction of template-free nano- and microstructures of such materials have been rare. In the quest for dye-containing porous materials, a novel conjugated framework DPP-TAPP-COF with an enhanced absorption capability up to λ=800 nm has been synthesized by utilizing reversible imine condensations between 5,10,15,20-tetrakis(4-aminophenyl)porphyrin (TAPP) and a diketopyrrolopyrrole (DPP) dialdehyde derivative. Surprisingly, the obtained COF exhibited spontaneous aggregation into hollow microtubular assemblies with outer and inner tube diameters of around 300 and 90 nm, respectively. A detailed mechanistic investigation revealed the time-dependent transformation of initial sheet-like agglomerates into the tubular microstructures.

@article{ANIE:ANIE201708526, abstract = {Despite significant progress in the synthesis of covalent organic frameworks (COFs), reports on the precise construction of template-free nano- and microstructures of such materials have been rare. In the quest for dye-containing porous materials, a novel conjugated framework DPP-TAPP-COF with an enhanced absorption capability up to λ=800 nm has been synthesized by utilizing reversible imine condensations between 5,10,15,20-tetrakis(4-aminophenyl)porphyrin (TAPP) and a diketopyrrolopyrrole (DPP) dialdehyde derivative. Surprisingly, the obtained COF exhibited spontaneous aggregation into hollow microtubular assemblies with outer and inner tube diameters of around 300 and 90 nm, respectively. A detailed mechanistic investigation revealed the time-dependent transformation of initial sheet-like agglomerates into the tubular microstructures.}, added-at = {2018-01-26T12:16:15.000+0100}, author = {Gole, Bappaditya and Stepanenko, Vladimir and Rager, Sabrina and Grüne, Matthias and Medina, Dana D. and Bein, Thomas and Würthner, Frank and Beuerle, Florian}, biburl = {https://www.bibsonomy.org/bibtex/27e8d09ed281545854c82f3b15a59a4ed/wuerthner_group}, doi = {10.1002/anie.201708526}, interhash = {2450d1d5a6220e91cb1e4e8f670a6adb}, intrahash = {7e8d09ed281545854c82f3b15a59a4ed}, issn = {1521-3773}, journal = {Angew. Chem. Int. Ed.}, keywords = {afm cells molecular myown organic}, month = jan, number = 3, pages = {846--850}, timestamp = {2020-06-29T14:38:41.000+0200}, title = {Microtubular Self-Assembly of Covalent Organic Frameworks}, url = {http://dx.doi.org/10.1002/anie.201708526}, volume = 57, year = 2018 }