Abstract
This work synthesizes a green-fluorescent conjugated polymer and performs basic photophysical characterization of this new material. Atums Green[1] is synthesized by a Suzuki cross-coupling polymerization reaction between isostructural dibromo and diboronic acid monomers and is structurally characterized by nuclear magnetic resonance and gel permeation chromatography. The polymer consists of an alkoxy-substituted 1,4-bis((E)-styryl)benzene repeating unit with molecular weight up to Mn = 50 kDa relative to polystyrene. Atums Green shows a strong green fluorescence maximized at ≈500 nm in chloroform and tetrahydrofuran solutions, with an absolute quantum efficiency as high as 98%. The photobleaching dynamics and time-resolved photoluminescence (TRPL) are measured both in solutions and in solid films. Finally, solution-based lasing is demonstrated in a bulk lasing cavity and in a cylindrical microcavity. Lasing emission is readily achieved in both formats, indicating that Atums Green has excellent emission characteristics, and further suggesting that it may present a viable green-emitting conjugated polymer materials system for light emission applications.
| Original language | English |
|---|---|
| Article number | 2200294 |
| Journal | Macromolecular Chemistry and Physics |
| Volume | 224 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 2023 |
Keywords
- conjugated polymers
- fluroescence
- green
- lasing
- photophysics
- polymers
- synthesis