One‐dimensional porphyrin‐fullerene (C60) assemblies: role of central metal ion in enhancing ambipolar mobility
| Title | One‐dimensional porphyrin‐fullerene (C60) assemblies: role of central metal ion in enhancing ambipolar mobility |
| Publication Type | Journal Article |
| Year of Publication | 2018 |
| Authors | Goudappagouda,, Gedda, M, Kulkarni, GU, Sukumaran, SBabu |
| Journal | Chemistry - A European Journal |
| Volume | 24 |
| Issue | 30 |
| Date Published | MAR |
| Abstract | One-dimensional (1D) nanostructures of -conjugated molecules exhibiting excellent charge carrier mobilities have found much interest in organic electronic devices. Even though it is tedious to form such structures, the availability of highly delocalized electron and hole carriers in these donor (D)-acceptor (A) co-assemblies realize ambipolar charge transport. Here we report the successful demonstration of a simple solution casting method to create ambipolar donor-acceptor single crystalline assembly. 1D assemblies of 5,10,15,20-tetraphenylporphyrins (H2TPP, ZnTPP) and fullerene (C60) exhibit high ambipolar mobility in the range of 0.8-3.4 cm2/Vs for electrons and holes with high ON/OFF ratio and low threshold voltage. A direct experimental proof for the pivotal role of central Zn2+ in tetraphenyl porphyrin, which enables a strong D-A charge transfer interaction in the cocrystal and thereby induces electron (1.35 cm2/Vs), hole (3.42 cm2/Vs) mobilities, the highest reported for two component D-A assemblies using solution casting, is demonstrated. |
| DOI | 10.1002/chem.201800197 |
| Type of Journal (Indian or Foreign) | Foreign |
| Impact Factor (IF) | 5.317 |
Divison category:
Organic Chemistry
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