Functionalized acenes have attracted enormous interests due to their unique electronic properties. Functionalized pentacenes is regarded as a key building block for organic-filed effect transistor (OFET) because of its high charge mobility. However, stability and solubility issues are two critical factors that limit their use in practical application. Ethynylation has shown to be one of the best strategies to stabilize pentacene. We are interested in linearly fusing another aromatic chromophore such as porphyrin with alkynyl-substituted pentacene to further increase its stability and solubility.<br/>In this work, a new class of pentacene fused porphyrin dimer with high stability and solubility was prepared and characterized. Photodegradation studies using UV-Vis and <sup>1</sup>H NMR reveal that the new pentacene derivative exhibits an increased solubility and stability up to 16 times compared to 6,13-bis(phenyethynyl)pentacene.

Pentacene-fused porphyrin dimer exhibiting high stability and solubility

2019 Fall National Meeting

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