Formation of insoluble perylenetetracarboxylic diimide films by electro- or photo-crosslinking of pyrrole units

Abstract

Perylenetetracarboxylic diimide derivatives bearing 2- or 4-peripheral pyrrole pendants could be efficiently crosslinked to form an insoluble film either by electropolymerization or visible light induced oxidative photopolymerization of the pyrrole units.

Formation of a Perylenetetracarboxylic Diimide Network Film by Post Electrochemical Treatment

“…Water was distilled and deionized to a level of resistivity greater than 17 MΩ cm. The compounds in Figure were synthesized as reported in the supplementary information of our previous paper . A patterned Au/Ti/glass (line width 55 μm, space 45 μm) substrate was prepared by conventional photolithography.…”

“…To prepare an insoluble PDI-networked film, we used two methods. , One is the electrochemical deposition method in which the film is deposited electrochemically from a solution phase . In this method, an insoluble film is formed by electrochemical polymerization of the conductive polymer precursors, i.e., Py units.…”

“…In this method, an insoluble film is formed by electrochemical polymerization of the conductive polymer precursors, i.e., Py units. There have been several other examples of PDI-containing films prepared by this method using PDI derivatives bearing two or four peripheral oligothiophene pendants. , The other method is to cross-link the peripheral pyrrole units by photoirradiation after spin-coating soluble PDI- n Py on a substrate, namely, the postphotopolymerization method . Concerned with the film morphology, the first method gives a rough surface with a lot of granules, which is a common result of nucleation and growth during the electropolymerization. − On the other hand, a smooth granule-free PDI-networked film can be obtained by the second approach.…”

Stokes shift/emission efficiency trade-off in donor–acceptor perylenemonoimides for luminescent solar concentrators

“…The anion can be reversibly quenched by molecular oxygen, while the radical cation undergoes irreversible degradation. 82 Such a mechanism can be possibly applied for all electron-rich and strongly twisted substituents. Fig.…”

Enhanced Photocatalytic Activity of 3,4,9,10-Perylenetetracarboxylic Diimide Modified Titanium Dioxide Under Visible Light Irradiation

“…For example, they are used as tunable laser dyes, light-harvesting materials, transistors, solar cells, and optoelectronic devices, such as light-emitting diodes, because of their unique optical and electrochemical properties. 12,13 In the present work, we report the enhanced photocatalytic activity under visible-light irradiation of metal oxide-modified TiO2 sensitized with PTCDI. We also propose an efficient method for the preparation of photocatalyst thin film.…”