Polymerizable Solvent‐free Organic Liquids: A New Approach for Large Area Flexible and Foldable Luminescent Films

The high demand for light‐emitting and display devices made luminescent organic materials as attractive candidates. Solvent‐free organic liquids are one of the promising emitters among them due to the salient features. However, the inherent limitations of forming sticky and noncurable surfaces must...

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Bibliographic Details
Published in:Angewandte Chemie 2023-08, Vol.135 (34), p.n/a
Main Authors: Wakchaure, Vivek Chandrakant, Veer, Sairam Dnyaneshwar, Nidhankar, Aakash D., Kumar, Viksit, Narayanan, Aswini, Babu, Sukumaran Santhosh
Format: Article
Language:English
Subjects:
Bulk polymerization
Carbazole
Carbazoles
Chemistry
Display devices
Emitters
Energy Transfer
Glass substrates
Naphthalene
Organic liquids
Organic materials
Polymerization
Solvent-Free Organic Liquids
Solvents
Thin-Film
White Light
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Summary:The high demand for light‐emitting and display devices made luminescent organic materials as attractive candidates. Solvent‐free organic liquids are one of the promising emitters among them due to the salient features. However, the inherent limitations of forming sticky and noncurable surfaces must be addressed to become an alternate emitter for large‐area device applications. Herein, we functionalized solvent‐free organic liquids having monomeric emission in bulk with polymerizable groups to improve the processability. The polymerizable group on carbazole, naphthalene monoimide, and diketopyrrolopyrrole‐based solvent‐free liquid emitters enabled on‐surface polymerization. These emitters alone and in combinations can be directly coated on a glass substrate without the help of solvents. Subsequent photo or thermal polymerization leads to stable, non‐sticky, flexible, foldable, and free‐standing large‐area films with reasonably high quantum yield. Our demonstration of the tunable and white light‐emitting films using polymerizable solvent‐free liquids might be a potential candidate in flexible/foldable/stretchable electronics. The new concept of polymerizable liquid can be extended to other functional features suitable for futuristic applications. A new polymerizable solvent‐free organic liquid approach has been introduced to overcome the inherent limitations of organic liquid emitters. On‐surface thermochemical polymerization of the hybrid liquids results in flexible and foldable large‐area luminescent films. Our strategy is well suited for developing tunable and white light‐emitting free‐standing large‐area flexible and transparent films suitable for futuristic applications.
ISSN:0044-8249
1521-3757
DOI:10.1002/ange.202307381