Investigation of polycarbazoles thin films prepared by electrochemical oxidation of 3- and 9-substituted carbazoles

Contal, Emmanuel; Lakard, Sophie; Dumur, Frédéric; Lakard, Boris

doi:10.1016/j.porgcoat.2021.106563

Cited by 5 publications

(5 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…All compounds were synthesized according to the procedures described in depth elsewhere. 58,26 Linear Characterization Methods…”

Section: Compounds Synthesismentioning

confidence: 99%

Push-Pull Carbazole-Based Dyes: Synthesis, Strong Ultrafast Nonlinear Optical Response, and Effective Photoinitiation for Multiphoton Lithography

Stavrou,

Zyla,

Ladika

et al. 2024

Preprint

View full text Add to dashboard Cite

The present work reports on the ultrafast nonlinear optical (NLO) properties of a series of D-π-Α and D-A push-pull carbazole-based dyes and establishes a correlation between these properties and their efficiency for potential photonic and optoelectronic applications, such as multiphoton lithography (MPL). The ultrafast NLO properties of the studied dyes are determined by two distinct experimental techniques, Z-scan and pump-probe optical Kerr effect (OKE), employing 246 fs laser pulses at 515 nm. The results indicate that chemical functionalization of the carbazole moiety with various strong electron-donating and/or electron-withdrawing groups, such as benzene, styrene, 4-bromostyrene, nitrobenzene, trimethyl isocyanurate, methyl, and indane-1,3-dione, can result in a controlled and significant enhancement of the NLO absorptive and refractive responses. In the context of potential applications, the efficiency of carbazole-based organic materials as photoinitiators (PIs) for MPL applications is demonstrated. The fabricated woodpile microstructure using chemically functionalized carbazole as a PI demonstrates improvements in both resolution and MPL efficiency compared to that using unfunctionalized carbazole as a PI. This attributed to efficient charge transfer resulting from chemical functionalization, which leads to a substantial increase (approximately one order of magnitude) in the values of the imaginary part of the second-order hyperpolarizability (Imγ) and the two-photon absorption cross section (σ). The achieved resolution of 280 nm is comparable to that obtained with other widely used PIs in MPL applications. Additionally, owing to strong NLO refraction and Kerr signal of the studied functionalized carbazole, they also exhibit promise as candidates for all-optical switching applications in telecommunications, optical computing, data processing, etc.

show abstract

“…All compounds were synthesized according to the procedures described in depth elsewhere. 58,26 Linear Characterization Methods…”

Section: Compounds Synthesismentioning

confidence: 99%

Push-Pull Carbazole-Based Dyes: Synthesis, Strong Ultrafast Nonlinear Optical Response, and Effective Photoinitiation for Multiphoton Lithography

Stavrou,

Zyla,

Ladika

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…All compounds were synthesized according to the procedures described in depth elsewhere. 62,26 Linear Characterization Methods…”

Section: Compound Synthesismentioning

confidence: 99%

Push–Pull Carbazole-Based Dyes: Synthesis, Strong Ultrafast Nonlinear Optical Response, and Effective Photoinitiation for Multiphoton Lithography

Stavrou,

Zyla,

Ladika

et al. 2024

ACS Appl. Opt. Mater.

View full text Add to dashboard Cite

The present work reports on the ultrafast nonlinear optical (NLO) properties of a series of D−π−Α and D−A push− pull carbazole-based dyes and establishes a correlation between these properties and their efficiency for potential photonic and optoelectronic applications such as multiphoton lithography (MPL). The ultrafast NLO properties of the studied dyes are determined by two distinct experimental techniques, Z-scan and pump−probe optical Kerr effect (OKE), employing 246 fs laser pulses at 515 nm. The results indicate that chemical functionalization of the carbazole moiety with various strong electron-donating and/or electron-withdrawing groups, such as benzene, styrene, 4bromostyrene, nitrobenzene, trimethyl isocyanurate, methyl, and indane-1,3-dione, can result in a controlled and significant enhancement of the NLO absorptive and refractive responses. In the context of potential applications, the efficiency of carbazole-based organic materials as photoinitiators (PIs) for MPL applications is demonstrated. The fabricated woodpile microstructure using chemically functionalized carbazole as a PI demonstrates improvements in both feature size and MPL efficiency compared to that using unfunctionalized carbazole as a PI. This is attributed to the efficient charge transfer resulting from chemical functionalization, which leads to a substantial increase (approximately 1 order of magnitude) in the values of the imaginary part of the second-order hyperpolarizability (Imγ) and the two-photon absorption cross section (σ). The achieved feature size of 280 nm is comparable to that obtained with other widely used PIs in MPL applications. Additionally, owing to the strong NLO properties of the studied functionalized carbazole, they could also be promising candidates for further applications in photonics and optoelectronics.

show abstract

“…As a sulphur host that can be prepared via EP, polycarbazole (PCBZ) is considered a promising material, owing to its electrical conductivity of 10 −2 -10 −3 S cm −1 , low monomer cost, high chemical stability, and porous structure [27][28][29]. The carbazole monomer can undergo EP from either the 3-and 6-or 2-and 7-positions, rendering it extremely versatile [27,30]. In addition, electropolymerised PCBZ (a p-type conducting polymer) maintains positively charged sites on its backbone because of the oxidative EP, which facilitates LPS adsorption, thus resulting in highly stable LiSB cycling.…”

Section: Schütze Et Al Investigated the Effect Of The Regiochemistry ...mentioning

confidence: 99%

Electropolymerisation Technologies for Next-Generation Lithium–Sulphur Batteries

Kim,

Lee

2023

Polymers

View full text Add to dashboard Cite

Lithium–sulphur batteries (LiSBs) have garnered significant attention as the next-generation energy storage device because of their high theoretical energy density, low cost, and environmental friendliness. However, the undesirable “shuttle effect” by lithium polysulphides (LPSs) severely inhibits their practical application. To alleviate the shuttle effect, conductive polymers have been used to fabricate LiSBs owing to their improved electrically conducting pathways, flexible mechanical properties, and high affinity to LPSs, which allow the shuttle effect to be controlled. In this study, the applications of various conductive polymers prepared via the simple yet sophisticated electropolymerisation (EP) technology are systematically investigated based on the main components of LiSBs (cathodes, anodes, separators, and electrolytes). Finally, the potential application of EP technology in next-generation batteries is comprehensively discussed.

show abstract

Investigation of polycarbazoles thin films prepared by electrochemical oxidation of 3- and 9-substituted carbazoles

Cited by 5 publications

References 50 publications

Push-Pull Carbazole-Based Dyes: Synthesis, Strong Ultrafast Nonlinear Optical Response, and Effective Photoinitiation for Multiphoton Lithography

Push-Pull Carbazole-Based Dyes: Synthesis, Strong Ultrafast Nonlinear Optical Response, and Effective Photoinitiation for Multiphoton Lithography

Push–Pull Carbazole-Based Dyes: Synthesis, Strong Ultrafast Nonlinear Optical Response, and Effective Photoinitiation for Multiphoton Lithography

Electropolymerisation Technologies for Next-Generation Lithium–Sulphur Batteries

Contact Info

Product

Resources

About