Title

Synthesis and Photopolymerization of Diketopyrrolopyrrole-based Organogels Towards New Functional Polydiacetylenes

Type of Proposal

Oral Presentation

Start Date

23-3-2018 10:35 AM

End Date

23-3-2018 11:56 AM

Location

Alumni Auditorium C

Faculty

Faculty of Science

Faculty Sponsor

Simon Rondeau-Gagné

Abstract/Description of Original Work

The molecular self-assembly of π-conjugated materials based on organic dyes offers new possibilities for various applications, including electronics and healthcare. In particular, through the incorporation of supramolecular interactions in π-conjugated materials, novel properties can be enabled, such as fluorescence and charge transport. Among the different strategies to self-assemble molecules and materials, gelation is particularly attractive given its easy preparation and versatility. However, hydro and organogels are not very stable due to their intrinsic dynamic nature. Therefore, methodologies to rigidify organogels and enhance their stability is highly required in order to give access to novel functional nanomaterials with innovative properties. This presentation will discuss our recent efforts in the covalent crosslinking of organogels based on electroactive diketopyrrolopyrrole (DPP) pigments. Towards that objective, we developed a new strategy based on the design and preparation of novel DPP-based gelator, allowing for the utilization of a specific type of photocrosslinking through the formation of polydiacetylenes. Upon covalent cross-linking and formation of these polydiacetylene moieties, the resulting nanomaterials showed very interesting morphology and a drastically enhanced stability. Through this presentation, the complete characterization of the new nanomaterials will be highlighted, with an important focus on the chemistry of the organogels.

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Mar 23rd, 10:35 AM Mar 23rd, 11:56 AM

Synthesis and Photopolymerization of Diketopyrrolopyrrole-based Organogels Towards New Functional Polydiacetylenes

Alumni Auditorium C

The molecular self-assembly of π-conjugated materials based on organic dyes offers new possibilities for various applications, including electronics and healthcare. In particular, through the incorporation of supramolecular interactions in π-conjugated materials, novel properties can be enabled, such as fluorescence and charge transport. Among the different strategies to self-assemble molecules and materials, gelation is particularly attractive given its easy preparation and versatility. However, hydro and organogels are not very stable due to their intrinsic dynamic nature. Therefore, methodologies to rigidify organogels and enhance their stability is highly required in order to give access to novel functional nanomaterials with innovative properties. This presentation will discuss our recent efforts in the covalent crosslinking of organogels based on electroactive diketopyrrolopyrrole (DPP) pigments. Towards that objective, we developed a new strategy based on the design and preparation of novel DPP-based gelator, allowing for the utilization of a specific type of photocrosslinking through the formation of polydiacetylenes. Upon covalent cross-linking and formation of these polydiacetylene moieties, the resulting nanomaterials showed very interesting morphology and a drastically enhanced stability. Through this presentation, the complete characterization of the new nanomaterials will be highlighted, with an important focus on the chemistry of the organogels.