Novel Solid-State Emissive Polymers and Polymeric Blends from a T-Shaped Benzodifuran Scaffold: A Comparative Study

Abstract

Two novel polyimines were synthesized from a benzodifuran based diamino monomer and two dialdehydes bearing bulky groups and a flexible spacer. The polymers display tuned luminescence performance according to the presence of half-salen groups. The effect of the intramolecular bond on the emission properties were examined. Two model compounds, replicating the same emissive Schiff base cores, were synthetized. From the models, dye-doped blends in the fluorophore/matrix ratio, resembling the polymers, were produced. Amorphous thin films of the covalent polymers and the polymeric blends were obtained by spin-coating technique. The Photoluminescent (PL) response of the different macromolecular systems were qualitatively and quantitatively examined and compared.

A Novel L-Shaped Fluorescent Probe for AIE Sensing of Zinc (II) Ion by a DR/NIR Response

“…The synthetic route for the benzofuran precursor BF in Scheme 1 followed a reported procedure [ 49 ] consisting in the diazotization of 4-nitroaniline and the coupling of the diazonium salt on a benzoquinone. The target compound L is the condensation product between the aminic functional group of BF and the bulky salicylic naphthaldehyde.…”

“…Commercially available starting products were purchased from Sigma Aldrich. Compound BF, butyl 2-amino-5-hydroxy-7-(4-nitrophenyl)benzofuran-3-carboxylate, was obtained as described in [ 43 , 49 ].…”

Complementary Study Based on DFT of Optical and Electronic Properties of New Copolymer PVK-F8T2

“…For this reason, the current scientific and industrial challenge is to design new ideally soluble [ 8 ] conjugated polymers with the aim of obtaining a new material having modular optoelectronic properties endowed with the desired performance, thus improving their solubility [ 9 , 10 ] in order to act as active layers in optoelectronic devices [ 11 , 12 , 13 ]. Research in these directions has been fruitful previously in polymers such as the PVK [ 14 , 15 , 16 , 17 , 18 , 19 , 20 ] and the F8T2 [ 21 , 22 , 23 ], which have become successful in recent years thanks to their characteristic properties. To this end, considerable efforts have, therefore, been allocated to design and elaborate on this new copolymer PVK-F8T2.…”

Buchwald–Hartwig Amination of Aryl Halides with Heterocyclic Amines in the Synthesis of Highly Fluorescent Benzodifuran-Based Star-Shaped Organic Semiconductors

“…Benzodifurans ( BDFs ), due to their p-type organic semiconductor properties, excellent light absorption and emission capability, and high hole mobility, are a group of compounds with a great potential application as luminescent and electroluminescent materials. − In addition, they are much less studied compared to benzodithiophenes widely used in optoelectronics. The appropriate molecular design of the BDF -based semiconductors allows for their application in many fields, including molecular switches and electrical regulators, − high-affinity fluorescent probes, potential therapeutic agents, dye-sensitized solar cell sensitizers, − polymer materials in polymer solar cells, − organic solar cells, , organic thin-film transistor materials, , and different layers in organic light-emitting diodes (LEDs). − …”