Highly fluorescent semiconducting pyrazoline materials for optoelectronics

Synthesis and Characterization of Solution Processable Poly(pyrazolines)

“…Pyrazolines are explored extensively as pharmacologically active molecules [ 25 ] and recent interest has been toward pyrazoline‐based polymeric materials that show promising optoelectronic characteristics. [ 26–29 ] Pyrazoline derivatives could exhibit longer wavelength, high photoluminescence, [ 30 ] hole transport efficiency, excellent photoconductivity, and good emitting properties that can be required for construction of OLEDs that can be synthesized by many routes as reported in the review by Fustero et al [ 30 ]…”

“…Pyrazolines are explored extensively as pharmacologically active molecules [25] and recent interest has been toward pyrazolinebased polymeric materials that show promising optoelectronic characteristics. [26][27][28][29] Pyrazoline derivatives could exhibit longer wavelength, high photoluminescence, [30] hole transport efficiency, excellent photoconductivity, and good emitting Solution-processable poly(dibenzalacetone) and poly(dibenzalcyclohexanone) are prepared by the condensation of 1,4-dialkoxy-bisbenzaldehyde and acetone/cyclohexanone using classic Claisen-Schmidt condensation. The prepared polymers are readily soluble in common organic solvents due to the presence of alkoxy chains present on the aromatic ring.…”

Syntheses, Experimental and Theoretical Studies on Absorption/Emission Properties of Pyrazoline-Containing Aryl/Methoxynaphthyl Substituents

“…[5][6][7][8] The building of these N-heterocycles systems, from simple reactions, using small molecules and compatible with multicomponent, regioselective, eco-friendly and efficient synthetic procedures, which include variations to conventional methods, allows to incorporate specific structural characteristics. [9][10][11][12][13][14] Substituents of different nature, electron withdrawing group (EWG) and electron releasing group (ERG), in aromatic aldehydes, ketones and hydrazines, make them versatile synthetic auxiliaries in classical organic synthesis.…”

“…Reports in the literature include studies on solvatochromic effect and electrochemical, photophysical, optical and nonlinear optical properties. [5][6][7][8][19][20][21][22] Following our research on the synthesis and evaluation of potential applications of pyrazole derivatives, 23,24 and the growing interest in the development of luminescence small molecules as emitting materials and biology research, [5][6][7][8][19][20][21][22][23][24][25] we report a series of pyrazoline derivatives incorporating methoxyl, an electron donor group, naphthyl and phenyl substituents as chromophores, on the π-conjugated structure and analysis of absorption/emission properties of these compounds.…”

5-(4-Fluorophenyl)-3-(naphthalen-1-yl)-1-phenyl-4,5-dihydro-1H-pyrazole

“…They are known to have various biological activities including antidepressant [1], antimalarial [2], antitumor [2,3], antibacterial [4,5] and anti-inflammatory [5][6][7][8]. Pyrazolines have also shown attractive fluorescents properties to detect some metal cations [9] and are excellent hole transport and emissive layer materials in organic electroluminescence devices [10,11]. In addition, they are also useful in agrochemical research [12].…”