Polymers with triphenylamine units: Photonic and electroactive materials

Iwan, Agnieszka; Sęk, Danuta

doi:10.1016/j.progpolymsci.2011.05.001

Cited by 189 publications

(116 citation statements)

References 88 publications

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“…Electro-optical properties were investigated using an indium tin oxide (ITO, Adrich Sigma Aldrich with an active area of 1.1 cm"0.8 cm) electrode as well as a platinum wire as counter electrode and an AgCl reference electrode. A film of the cross-linked polymer was deposited upon ITO coated glass electrode by electrochemical polymerization using a solution of polymer in acetonitrile/toluene (1:1) and TBABF 4 as electrolyte. The film was prepared by sweeping the potential between 0 and +1.8 V for 14 scan cycles and after deposition, the ITO/polymer film was rinsed with distilled water and further used as working electrode in a standard spectroelectrochemical cell (a quartz cuvette of 1cmx1cm dimensions) filled with supporting electrolyte (TBABF 4 , solution 0.1M in acetonitrile/toluene, 1:1).…”

Section: Measurementsmentioning

confidence: 99%

“…Among the large variety of conjugated polymers, triphenylamine-based oligomers and polymers have received much attention because they have good hole-transporting properties, high lightemitting efficiencies, photoconductivity and photorefractivity, large two-photon absorption crosssection, being attractive materials for optoelectronic applications [1][2][3]. Responsible for all these properties is triphenylamine, a well-known molecule that possesses interesting functions such as redox activity, fluorescence, high oxidability of nitrogen center and good hole-transporting properties via radical-cation species [4]. Thus, oligomers and polymers containing triphenylamine group in the main or side chain have found applications as photoconducting materials in xerography, organic fieldeffect transistors, photorefractive systems, light emitting diodes [5][6][7], solar cells [8,9] or electrochromic materials [10,11].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Electrogenerated networks from poly[4-(diphenylamino)benzyl methacrylate] and their electrochromic properties

Negru¹,

Vacareanu²,

Grigoraş³

2014

Express Polym. Lett.

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Abstract. benzyl methacrylate] with well-defined molecular weight and low polydispersity was prepared by atom transfer radical polymerization (ATRP) using 4-(diphenylamino) benzyl 2-bromo-2-methyl-propanoate as initiator and CuBr/2,2!-bipyridine as catalytic complex. Electrochemical behavior and optical properties of the polymers were investigated by cyclic voltammetry and UV-Vis and fluorescence spectroscopy. Cyclic votammetric studies revealed that the redox processes were accompanied by dimerization of triphenylamine pendant groups. The initial polymer was postmodified, in solution or bulk, by electrochemical oxidation leading to a crosslinked and insoluble network with electrochromic properties, accompanied by strong color changes with high coloration efficiency. The crosslinking reaction took place between triphenylamine groups through para free positions leading to tetraphenylbenzidine bridges. The structure of polymers was confirmed by Fourier transform infrared (FT-IR) spectroscopy and 1 H and 13 C-nuclear magnetic resonance spectroscopy. Morphology studies of the cross-linked film have evidenced a smooth and continuous aspect without any pinholes or defects.

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Section: Measurementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electrogenerated networks from poly[4-(diphenylamino)benzyl methacrylate] and their electrochromic properties

Negru¹,

Vacareanu²,

Grigoraş³

2014

Express Polym. Lett.

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“…24 Consequently, TPA are considered as ideal donor units in organic dyes, because are able to exhibit a good electron donating and high hole-transporting capability. 24,25 New dyes based on TPA as electron donor group have been studied from experimental, [26][27][28][29][30] and theoretical, 16,27,[31][32][33][34] point of views. Hence, a lot of effort has been dedicated to understand the relationship between the molecular structure of these dyes based on TPA, CA and different π-spacers, in order to analyze their charge-transporting properties.…”

Section: Introductionmentioning

confidence: 99%

Optoelectronic Properties of Triphenylamine Based Dyes for Solar Cell Applications. A DFT Study

Fahim¹,

Bouzzine²,

Hamidi³

et al. 2017

Quim. Nova

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Dye-sensitized solar cells (DSSCs) based on triphenylamine (TPA) as a donor group linked with the acceptor cyanoacrylic acid electron acceptor by 2,2'-bithiophene as π-bridged (D-π-A) has been investigated by Density Functional Theory (DFT) at the B3LYP/6-311G(d,p) level of theory, to establish the conformational orientation of cyanoacrylic acid group as well as evaluate the effect of planarizing the 2,2'-bithiophene unit in position 3 and 3' by electron withdrawing or donor groups on the electronic structure properties of ground and doping(n,p) states. Also, the Time Dependent Density Functional Theory (TD-DFT) at the CPCM-TD-CAM-B3LYP//CAM-B3LYP/6-311G(d,p) level of theory were selected to modulate the electronic absorption spectra and charge-transfer capabilities of the molecules analyzed in the present work. The results indicate that adding an auxiliary donor or withdrawing group to the 2,2'-bithiophene in the (D-π-A) arrangement allow to modify the LUMO's energy of the dyes, while the HOMO´s energy is slightly affected.

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“…They are useful complexing ligands for a number of transition metal ions 8,9 and indicate paramagnetism, semiconducting and resistance to high energy. [10][11][12][13] They are used to prepare composite materials having high resistance at high temperatures, thermostablizers, photoresistors, flame resistance materials, and components of electrochemical cells. [14][15][16] The Schiff base polymers demonstrate antimicrobial activity against bacteria, yeast and fungi.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization and Biological Studies of New Linear Thermally Stable Schiff Base Polymers with Flexible Spacers

Qureshi

Khuhawar

Jahangir

et al. 2016

ACSi

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Five new linear Schiff base polymers having azomethine structures, ether linkages and extended aliphatic chain lengths with flexible spacers were synthesized by polycondensation of dialdehyde (monomer) with aliphatic and aromatic diamines. The formation yields of monomer and polymers were obtained within 75-92%. The polymers with flexible spacers of n-hexane were somewhat soluble in acetone, chloroform, THF, DMF and DMSO on heating. The monomer and polymers were characterized by melting point, elemental microanalysis, FT-IR, 1 HNMR, UV-Vis spectroscopy, thermogravimetry (TG), differential thermal analysis (DTA), fluorescence emission, scanning electron microscopy (SEM) and viscosities measurement of their dilute solutions. The studies supported formation of the monomer and polymers and on the basis of these studies their structures have been assigned. The synthesized polymers were tested for their antibacterial and antifungal activities.

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Polymers with triphenylamine units: Photonic and electroactive materials

Cited by 189 publications

References 88 publications

Electrogenerated networks from poly[4-(diphenylamino)benzyl methacrylate] and their electrochromic properties

Electrogenerated networks from poly[4-(diphenylamino)benzyl methacrylate] and their electrochromic properties

Optoelectronic Properties of Triphenylamine Based Dyes for Solar Cell Applications. A DFT Study

Synthesis, Characterization and Biological Studies of New Linear Thermally Stable Schiff Base Polymers with Flexible Spacers

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