Journal
SUPRAMOLECULAR CHEMISTRY
Volume 29, Issue 11, Pages 769-775Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/10610278.2017.1377837
Keywords
Porphyrin; diketopyrrolopyrrole; near-infrared emitter; two-photon absorption
Categories
Funding
- icFRC
- LabEx CSC
- Region Alsace
- Ministry of Education and Research
- project SmartMOFs [H2020-MSCA-IF-2016-751175]
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A Zn-porphyrin dimer and its linear conjugate with two diketopyrrolopyrrole (DPP) units have been prepared and their one- and two-photon photophysical properties have been characterised. The already wide conjugation of the dimer is further extended in the DPP containing derivative, leading to absorption and emission features in the near-infrared. The fluorescence quantum yield of the two compounds is of the order of 0.20 in organic solvents, a remarkable value for NIR emitting Zn-porphyrin systems. High two-photon absorption cross sections of 10,000 GM and 21,500 GM are measured at 910nm for the dimer and the DPP conjugate, respectively, making these dimers promising for two-photon excited fluorescence imaging applications. [GRAPHICS] .
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