Synthesis and Solid-State Polymerization of Diacetylene with Tetrathiafulvalene and the Electronic Properties

Light-Induced Conductivity in a Solution-Processed Film of Polydiacetylene and Perylene Diimide

“…Remarkably, the electrical conductivity of the drop-casted PDA/PDI film, calculated using the data in Figure 4 and film dimensionalities, was around 10 −7 S/cm, which is 5 orders of magnitude greater than reported conductivity values for PDA. 9 The current profile in Figure 4 is significant because, to the best of our knowledge, such electronic conductivity has not been previously reported in nondoped PDA systems. Indeed, the UV-dependent conductivity in Figure 4 provides strong evidence that electron transport is facilitated by the conjugated network of the PDA.…”

“…6−8 However, PDA crystals are nearly complete insulators (exhibiting electrical conductivity on the order of σ ≈ 10 −12 S/cm), making their use in electronic applications rare. 9 Here, we report fabrication of a solution-processed film exhibiting light-induced conductivity from a mixture of melamine-displaying diacetylene and perylene bis-(dicarboximide) (PDI), a widely studied constituent of organic electronic devices. 10−12 The binary film featured distinct structural and morphological properties, reflecting segregated albeit intertwined domains of diacetylene and PDI, likely induced through hydrogen binding between PDI and the melamine units.…”

“…Polydiacetylenes (PDAs) are a family of conjugated polymers exhibiting remarkable photophysical properties, particularly unique visible and fluorescence light absorbance. − Because PDA is well-known as a quasi-one-dimensional (1D) π-conjugated polymer, specific charge carrier transport is expected due to the 1D electronic state. , Previous studies have shown, for example, that vacuum-deposited PDA films could function as p-type semiconductor components in an OFET. − However, PDA crystals are nearly complete insulators (exhibiting electrical conductivity on the order of σ ≈ 10 –12 S/cm), making their use in electronic applications rare …”

Polydiacetylene Capacitive Artificial Nose

“…23−25 PDA crystals, however, are nearly complete insulators (exhibiting electrical conductivity on the order of σ ≈ 10 −12 S/cm). This feature makes electronic applications of PDA systems rare; 26,27 the insulating properties of PDA, however, may be exploited for dielectric-based applications, specifically capacitive-based sensing of vapor substances.…”

“…Because the conjugated PDA network can be perceived as a quasi-one-dimensional (1D) π-conjugated polymer, charge carrier transport phenomena have been reported. , Previous studies have shown, for example, that vacuum-deposited PDA films exhibit p-type semiconductor properties. − PDA crystals, however, are nearly complete insulators (exhibiting electrical conductivity on the order of σ ≈ 10 –12 S/cm). This feature makes electronic applications of PDA systems rare; , the insulating properties of PDA, however, may be exploited for dielectric-based applications, specifically capacitive-based sensing of vapor substances.…”