Synthesis of a PPV‐fluorene derivative: Applications in luminescent devices

Abstract

Synthesis of a polyfluorene/poly(p-phenylene vinylene) derivative, the Poly [(9,9 0 -di-hexylfluorenediylvinylene-alt-1,4-phenylenevinylene)-co-((9,9 0 -(3-t-butylpropanoate) fluorene-1,4-phenylene)] (LaPPS 42) was performed following Wittig and Suzuki routes. Polyfluorenes and derivatives have been used in electroluminescent devices, and the synthesis described here has the advantage in pave the way to get distinct structures having different emission spectra. An extensive study of its electrochemical, thermomechanical, optical, and structural properties was carried out, as well as its application in electroluminescent devices. Polymer light-emitting diodes (PLEDs) and polymer light-emitting electrochemical cells (PLECs) were built using LaPPS 42 as active layer, and their electric and optical characterizations confirm they have a potential as active element in electroluminescent devices.

Influence of the π‐bridge and heteroatom on fluorene‐based donor‐acceptor polymers: Structure and optoelectronic properties

“…Monomers M‐1, M‐4, and M‐5 were prepared following procedures outlined in Data S1. The synthesis of PFeBT, PFeBSe, PFeTBTT, and PFeTBSeT (Scheme 1) was performed according to the procedure reported in the literature 26–28 . In a typical experimental procedure, a 25 mL flask was filled with (0.31 mmol) of the respective dibromo‐monomer (M‐2, M‐3, M‐4, or M‐5), (0.31 mmol) of 2‐(4,4,5,5‐tetramethyl‐1,3,2‐dioxaborolan‐2‐yl)‐9,9‐bis(3‐(tert‐butyl propanoate))fluorene (M‐1), 8 mg of Pd(Ph 3 P) 4 , and (3.7 mmol) of potassium carbonate.…”

“…The synthesis of PFeBT, PFeBSe, PFeTBTT, and PFeTBSeT (Scheme 1) was performed according to the procedure reported in the literature. [26][27][28] In a typical experimental procedure, a 25 mL flask was filled with (0.31 mmol) of the respective dibromo-monomer (M-2, M-3, M-4, or M-5), (0.31 mmol) of 2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9,9-bis (3-(tert-butyl propanoate))fluorene (M-1), 8 mg of Pd(Ph 3 P) 4 , and (3.7 mmol) of potassium carbonate. A mixture of water: toluene (3:1) was then added to the flask, followed by bubbling Ar into the system for 20 min.…”

Deformation on segment-structure of electrostrictive polyurethane/polyaniline blends

“…It has been reported that carbonyl and amine functional groups are effective in mixtures of polyurethane and polyaniline [18]. The IR spectra of PU/PANI blends are shown in Fig.…”

Assessing the Donor–Acceptor Nature and the Electrochemical Stability of a Fluorene–Diketopyrrolopyrrole–Thiophene-Based Copolymer

“…Besides, coupling aromatic substitutes at the 2,7-position using Suzuki cross-coupling reactions, for instance, allows the control of its optical and electronic properties . Furthermore, applications in three-dimensional optical data storage, optical limiting, two-photon polymerization fabrication–due to a high two-photon absorption − –light-emitting electrochemical cells (LECs), as a hole transport layer in perovskite solar cells, and, recently, in optical amplifiers that can be used in visible-light communication, have been reported.…”