Novel Metal‐Free Porphyrin with Ionic Liquid and Sulphonic Acid Moieties for Visible Light Assisted Photocatalytic C‐N Coupling of Heterocyclic Compounds with Aryl Halides

Asian Journal of Organic Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 14, 2024

Abstract Metal‐free Buchwald‐Hartwig type photocatalytic approach for N‐substitution of 1,2,4‐triazole at normal temperature was explored the first‐time using novel imidazolium based Brønsted acid functionalized porphyrin (ImBAFPc). The energy band gap and Hammett acidity were determined by UV‐Vis spectrophotometer. gap, 1.06 eV supported absorption radiation in visible region. N‐arylation with various Ar−X achieved a home‐made photoreactor heterogeneous, recyclable ImBAFPc photocatalyst under irradiation 5 W LED good yields. protocol tolerated electron donating attracting Ar−X, including inactivated chlorobenzene, affording arylated triazole admirable ambient conditions.

Language: Английский

Synthesis of Side-Chain Liquid Crystalline Polyacrylates with Bridged Stilbene Mesogens

Molecules, Journal Year: 2024, Volume and Issue: 29(21), P. 5220 - 5220

Published: Nov. 4, 2024

In recent years, π-conjugated liquid crystalline molecules with optoelectronic functionalities have garnered considerable attention, and integrating these into side-chain polymers (SCLCPs) holds potential for developing devices that are operational near room temperature. However, it is difficult to design SCLCPs excellent processability because mesogens rigid rods, low solubility in organic solvents, a high isotropization Recently, we developed near-room-temperature nematic crystals based on “bridged stilbene”. this work, synthesized polyacrylate SCLCP incorporating bridged stilbene exhibited phase temperature could maintain crystallinity more than three months. We conducted thorough structure analysis evaluated the optical properties. The birefringence values of resulting were higher those corresponding monomers enhanced order parameters due polymer effect. addition, inherited mesogen-derived AIE properties, quantum yields (Φfl = 0.14–0.35) solid state. It noteworthy maximum fluorescence wavelength redshift greater 27 nm as consequence film formation. Thus, several unique characteristics unattainable small molecular systems.

Language: Английский

Microwave-Assisted Buchwald–Hartwig Double Amination: A Rapid and Promising Approach for the Synthesis of TADF Compounds

ACS Omega, Journal Year: 2024, Volume and Issue: 9(51), P. 50446 - 50457

Published: Dec. 9, 2024

We herein report a microwave-assisted Buchwald-Hartwig double amination reaction to synthesize potential thermally activated delayed fluorescence compounds, forming C(sp

Language: Английский