Poly Azomethine Research Articles

High-performance supercapacitive polyazomethines: Room temperature synthesis and their characterizations

A room temperature synthesized polyazomethine (PAZ) series via polycondensation route comprising monomer as 5-[4-(5-formylfuran-2-yl)phenyl]furan-2-carbaldehyde (III) and various diamines to engineer PAZ-1 to PAZ-5 polymers. Physico-chemical properties of as-prepared PAZ series have confirmed by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy dispersive X-ray analysis (EDAX), transmission electron microscopy (TEM) and spectroscopic techniques. In FTIR, –CH=N– peak at 1600 cm−1 attributed to the successful conversion of dicarbaldehyde (III) and diamines into polyazomethine. The amorphous nature of PAZ series is depicted by XRD diffractograph. The marigold like morphology of polyazomethines has revealed in FESEM and TEM images. The chemical composition and elemental distribution on PAZ surface has mapped using EDAX technique. The electrochemical activity of as-prepared polyazomethine electrodes has investigated by cyclic voltammetry (CV), galvanostatic charge discharge (GCD) and electrochemical impedance spectroscopy (EIS) techniques. The supercapacitive performance of PAZ-1 to PAZ-5 electrodes in various electrolytes as NaOH, KOH, Na2SO4, and LiCl by varying concentrations, the PAZ-2 electrode exhibits elevated specific capacitance (Cp) of 831 Fg−1, specific energy (SE) 22.99 Whrkg−1, specific power (SP) 82.87 KWkg−1 in optimum 1 M NaOH electrolyte. The distinguished PAZ-2 electrode after successive 500 cycles has delivered exceptional stability, 71.65 % in 1 M NaOH.

Synthesis, characterization and application of soluble fully conjugated polyazomethine from di‐ or trifunctional monomers

AbstractFully conjugated polyazomethines (PAZs) exhibit large amounts of micropores among their many short branches in relatively planar structures based on their fully conjugated configuration. However, these fully conjugated structures cause insolubility and non‐processability of the PAZs because they may have strong stacking interactions due to their planar structures. In this paper, to overcome this problem, three short lengths of oligodimethylsiloxane (ODMS) grafts (x = 9, 18 and 39) were introduced by end‐capping reaction of aldehydes at the end of insoluble PAZs with amino‐terminated ODMSs as end‐capping agents. As a result, the insoluble PAZs became almost soluble (solubility > 95–100%) and their molecular weight could be estimated using gel permeation chromatography (Mw = 15.9 × 103 g mol−1). PAZ‐embedded mixed‐matrix membranes (MMMs) were fabricated using blend solutions containing only small amounts (1.0 wt%) of the solubilized PAZs with ODMS grafts and crosslinked polydimethylsiloxane (PDMS). The PAZs/PDMS MMMs showed ultrahigh permeability to oxygen which achieved 8600 barrer without a decrease of the original permselectivity of PDMS. The excellent oxygen permeability of the PAZs/PDMS MMMs may be caused by an effective increase of porosity based on the fully conjugated PAZ nanosheet. © 2022 Society of Industrial Chemistry.

Calcined Co(II)-Chelated Polyazomethine as Cathode Catalyst of Anion Exchange Membrane Fuel Cells.

Polyazomethine (PAM) prepared from the polycondensation between p-phenylene diamine (PDA) and p-terephthalaldehyde (PTAl) via Schiff reaction can physically crosslink (complex) with Co ions. Co-complexed PAM (Co-PAM) in the form of gel is calcined to become a Co, N-co-doped carbonaceous matrix (Co-N-C), acting as cathode catalyst of an anion exchange membrane fuel cell (AEMFC). The obtained Co-N-C catalyst demonstrates a single-atom structure with active Co centers seen under the high-resolution transmission electron microscopy (HRTEM). The Co-N-C catalysts are also characterized by XRD, SEM, TEM, XPS, BET, and Raman spectroscopy. The Co-N-C catalysts demonstrate oxygen reduction reaction (ORR) activity in the KOH(aq) by expressing an onset potential of 1.19–1.37 V vs. RHE, a half wave potential of 0.70–0.92 V, a Tafel slope of 61–89 mV/dec., and number of exchange electrons of 2.48–3.79. Significant ORR peaks appear in the current–voltage (CV) polarization curves for the Co-N-C catalysts that experience two-stage calcination higher than 900 °C, followed by double acid leaching (CoNC-1000A-900A). The reduction current of CoNC-1000A-900A is comparable to that of commercial Pt-implanted carbon (Pt/C), and the max power density of the single cell using CoNC-1000A-900A as cathode catalyst reaches 275 mW cm−2.

Polymer-Derived Nitrogen-Doped Carbon Nanosheet Cluster and Its Application for Water Purification

A series of nitrogen-doped carbons (NCs) were prepared by the pyrolysis (300–900 °C) of crystalline polyazomethine (PAM) synthesized via a facile condensation reaction in methanol solvent. The controlled solvent evaporation resulted in PAM crystals in the form of nanosheet clusters with a sheet thickness of ~50 nm. Such architecture was maintained after pyrolysis, obtaining porous CNs of high specific surface areas of up to 700 m2/g. The resulting NCs were used as absorbents to remove aromatic Rhodamine B from water. The NC that pyrolyzed at 750 °C exhibited the highest adsorption capacity (0.025 mg/mg), which is attributed to its high surface area and surface condition.

Highly Stretchable, Self-Healable, Ultrasensitive Strain and Proximity Sensors Based on Skin-Inspired Conductive Film for Human Motion Monitoring.

Recently, flexible electronics have been paid great attention due to their unique characteristics, such as high stretchability, arbitrary bending, and recoverable deformation. As a core component, flexible conductive materials with skin-like properties are desirable and valuable for the development of flexible electronics. However, the integration of skin-like mechanical properties, inherent self-healing ability, ultrahigh sensitivity, and electrical conductivity into one material is difficult to be realized. Here, this study reports a kind of conductive film (PAM-dc-fGO) fabricated by cross-linking intrinsic self-repair polyazomethine (PAM) and ethylenediamine-functionalized graphene oxide (fGO) through dynamic covalent bonds (imine bonds, -CH═N-). The as-prepared conductive films exhibit skin-like mechanical properties with a stretchability of 212-275% and elastic moduli of 0.76-4.23 MPa. In addition, the healing efficiency in mechanical properties of the 24 h healed specimen can restore up to 99%, and the healing efficiency in terms of electrical conductivity still maintains above 95% after five breaking/healing cycles, indicating an excellent capability of self-repair. Due to the ultrahigh sensing sensitivity with the gauge factor (GF) of 641, the PAM-dc-fGO film-based strain sensor can precisely detect the weak signals from the human body. Moreover, the remote monitoring of human motions with a long distance of about 100 cm has been successfully conducted by a PAM-dc-fGO proximity sensor. This work provides a new path for the development of multifunctional soft materials, and the sensors show great potential in health diagnoses and security protection applications.

Effect of rGO:MWCNTs ratio on electrical conductivity of polyazomethine/rGO:MWCNTs nanocomposites

Using solution blending method, we produced nanocomposites based on polyazomethine (PAZ) loaded with hybrid carbon nanofillers. The nanofillers comprised reduced graphene oxide (rGO) and multi-walled carbon nanotubes (MWCNTs). The total nanofiller loading was equal to 1 wt% while the rGO:MWCNTs ratio varied as follows: 100:0, 75:25, 50:50, 25:75, and 0:100 wt%: wt%. The complex dielectric permittivity data obtained with a broadband dielectric spectrometer were used to analyze electrical conductivity of the nanocomposites in wide ranges of frequency and temperature. Electrical conductivity was found to increase with increasing MWCNTs portion and its maximum value was achieved when the nanofiller contained the MWCNTs nanoparticles exclusively. We extracted the electrical conductivity components, dc conductivity σdc and ac conductivity σac, and analyzed their behavior as function of frequency and temperature. The temperature dependences of σac were described with the Arrhenius equation, whereas its frequency dependences were characterized with a power function. For explaining the σac behavior, the correlated barrier hopping mechanism was accepted. Interfacial interactions between the hybrid nanofillers and the polymer matrix (the Maxwell-Wagner-Sillars effect) were detected. It was found to be strongly pronounced in the nanocomposites with high portion of MWCNTs in the hybrid fillers.

Novel triphenylamine polyazomethines bearing carbazole and trifluoromethyl substituents: Preparation and electrochromic behavior

A series of novel polyazomethines (PAMs) were successfully synthesised as reported herein. In particular, a new electroactive diamine 3″-trifluoromethyl-4, 4′-diamino-4″-N-carbazolyl triphenylamine (IV) underwent direct polycondensation reactions with various dialdehydes, such as terephthalaldehyde (Va), 1, 3-isophthalaldehyde (Vb), o-phthalaldehyde (Vc) and 4, 4′-diformyltriphenylamine (Vd) to yield a sequence of novel PAMs: VIa-VId. These polymers were tested via differential scanning calorimetry (DSC) to have very high glass transition temperatures (Tgs, 237–271 °C). Meanwhile, thermogravimetric analysis (TGA) indicated that all of the PAMs in these series were stable with a 5% weight loss in nitrogen atmosphere (444–483 °C). These PAMs films were tested via cyclic voltammetry (CV) and calculated to have HOMO levels between −5.09 and −5.29 eV, LUMO levels between −2.47 and −3.18 eV (relative to vacuum levels). The color of the PAMs films can be changed from yellow in the initial neutral state to red via electrooxidation during the period of 0.0–1.3 V, and then becomes purple as the voltage rises to 1.5 V. A variety of pH- and chemical doping-responsive color changes were also observed. Taking into account the sensitive properties of PAMs, this PAMs will have broad application prospects, such as chemical sensors, OLEDs and solar cells.

Recoverable and self-healing electromagnetic wave absorbing nanocomposites

Recent advancements in electronics engineering require materials with the resiliency and sustainability to extend their life time. With this regard, we presented a sustainable multi-functional nanocomposites strategy by introducing dynamic imine bonds based polyazomethine (PAM) as molecular interconnects and Fe3O4-loaded multiwalled carbon nanotubes as electromagnetic (EM) wave absorbing units. Driven by the reversible dynamic imine bonds, our materials show robust spontaneous self-healing with excellent healing efficiencies of 95% for PAM and 90% for nanocomposite, and an accelerated recovery under a moderate mechanical stimulus. By adding Fe3O4-loaded multiwalled carbon nanotubes, the hybrids show excellent EM wave absorbing properties with 50% increment on minimum reflection coefficient (−40.6 dB) than the reported value. We demonstrate a full degradability by decomposing a nanocomposite sheet of 100 mg in an acidic solution within 90 min at room temperature. The nanofillers and monomers after degradation can be re-used to synthesis nanocomposites. The testing results for recoverable nanocomposites show a good retention on mechanical property. This novel strategy may shed a light on the downstream applications in EM wave absorbing devices and smart structures with great potential to accelerate circular economy.

Synthesis and photophysical properties of inclusion complexes between conjugated polyazomethines with γ-cyclodextrin and its tris-O-methylated derivative

In this study, we investigate the influence of γ-cyclodextrin (γCD) or octakis-(2,3,6-tri-O-methyl)-γ-cyclodextrin (TMe-γCD) encapsulation on the solubility, thermal, optical, electrochemical, morphological, and electrical properties of an aromatic polyazomethine (PA). PA was prepared by oxidative CC coupling of pyrenyl groups from the monomer MA using FeCl3 as catalyst in DMF. After threading of γCD or TMe-γCD macrocycles onto the PA chains, the 1H NMR spectra were in line with the formation of the respective inclusion complexes, PA·γCD and PA·TMe-γCD, which showed distinct improvements of their solubility in common organic solvents, higher thermal stability, as well as better film-forming ability. Fluorescence spectroscopy revealed that the emission maximum shifted from 388 nm for PA to 425 nm and 428 nm for PA·γCD and PA·TMe-γCD, which is in good agreement with encapsulation of PA backbones into the hydrophobic cavities. Fluorescence lifetime measurements indicated multiexponential decays for all compounds, which is in accordance with different conformers in the excited state. Atomic force microscopy indicated that the surfaces of PA·γCD and PA·TMe-γCD in the solid state showed needle-shaped morphologies with widths of 105 ± 25 nm and 46 ± 13 nm, respectively, whereas the surface of the naked PA polymer displayed an irregular morphology with embedded particles and width of 158 ± 29 nm. The electrochemical band gaps (ΔEg) of PA·γCD and PA·TMe-γCD were lower than that of non-encapsulated PA. The electrical conductivities of the investigated compounds were about 10−11 S cm−1, which is in the range of insulating materials.

Relaxation processes in side-chain polyazomethine/thermally reduced graphene oxide nanocomposites

Nanocomposites based on side-chain polyazomethine (PAZ) and reduced graphene oxide (rGO) were prepared by solution blending method. They were subjected to broadband dielectric spectroscopy (BDS) analysis to discover the filler effect on the molecular mobility of the polymer chains. Low-temperature non-cooperative local γ- and β-relaxations and a high-temperature cooperative segmental α-relaxation were found and described analytically. The increasing rGO content was shown to retard all kinds of the molecular mobility of the PAZ chains. Because of enhanced attractive rGO/polymer segments interaction and retarded α-relaxation, the polymer fragility m and the dielectric glass transition temperature Tg100 of the PAZ/rGO nanocomposite were found to increase strongly with increasing rGO loading φ up to 1wt%. However, when φ exceeds 1wt%, the rGO nanoparticles form the percolation network resulting in enhanced conductivity of the nanocomposite and weakening the rGO/polymer segments interaction. As a consequence, m decreases and Tg100 tends to decline towards the value of the pristine PAZ. The dielectric relaxation strength was found to increase with increasing φ because of the rGO increment to the total dipole moment of the nanocomposite. Meanwhile, the thermal relaxation strength evaluated from the differential scanning calorimetry (DSC) data was shown to demonstrate other behavior. It decreases dramatically at a low rGO content (<0.5wt%) and does not change at higher rGO concentration. Such a behavior correlates with a strong decrease in the polymer degree of crystalliny evaluated from the wide-angle X-ray scattering (WAXS) data with increasing φ. This finding confirms the polymer chains intercalation into the rGO stacks in PAZ/rGO nanocomposites.

Towards designing polymers for photovoltaic applications: A DFT and experimental study of polyazomethines with various chemical structures

Theoretical studies of polyazomethines (PAZs) with various chemical structures designated for photovoltaic applications are presented. PAZ energy levels and optical properties were calculated within density-functional theory (DFT and TDDFT) framework for 28 oligomers (monomer, dimer and trimer) of PAZs. The correlations between chemical structure of PAZ and location of its highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energy levels were examined. It turned out that the presence of triaminophenylene, dimethoxydiphenylene and fluorine group raises the orbital energies. As a consequence, it is a factor which improves the photovoltaic efficiency of solar cell built on the base of the corresponding PAZ and [6,6]-phenyl C61 butyric acid methyl ester (PCBM). On the contrary, quinone, 1,3,5-triazine and perfluorophenylene groups lower orbital energies and have negative influence on the photovoltaic efficiency. Moreover, calculations for methyl, ethyl and butyl analogs of P3HT as well as polythiophenes were performed and compared with the results obtained for PAZs. In addition experimental data are presented, which cover optical, electrochemical and electrical transport properties of the studied PAZs, allowing to determine HOMO and LUMO energies of the polymers and their conductivity. Finally, comparison between calculated and experimental results were made and discussed.

Preparation and Characterization of poly(Azomethines) Containing Ether and Methylene Bridges: Photophysical, Electrochemical, Conductivity and Thermal Properties.

In this paper, a series of polyazomethines (PAZs) were prepared using dihydroxy substituted Schiff bases and 1,4-diiodobenzene. Also, different group effect such as methylene carbon and etheric oxygen bridges on photophysical, electrochemical, conductivity and thermal properties were clarified. The new polymeric materials structures were confirmed by means of 1H-NMR, FT-IR and UV-vis measurements. The molecular weight distributions of polymers were determined with gel permeation chromatography (GPC) measurements. Photophysical behaviors of polymers were explored by UV-vis absorption and fluorescence measurements. TGA-DTA and DSC techniques have been used for the thermal characterization of the PAZs. Thermal data and fluorescence measurements showed that etheric oxygen bridge containing polymers have a bit higher char and emission intensity than the methylene carbon bridge carrying polymers. According to TG analysis, Ton values of P-2MPDP, P-2-OPDP, P-4-MPDP and P-4-OPDP were found as 210, 250, 249 and 233°C, respectively. The HOMO-LUMO energy levels, electrochemical (E' g ) and optical (E g ) band gaps were calculated from cyclic voltammetry (CV) and UV-vis measurements, respectively. The electrochemical (E g ') band gaps values of P-2MPDP, P-2-OPDP, P-4-MPDP and P-4-OPDP were calculated as 2.68, 2.32, 2.34 and 2.07, respectively. Additionally, four-point probe technique was used to measure solid state electrical conductivities of both doped and undoped states of the PAZs.

Synthesis and characterization of conjugated polyphenols derived from azomethine formation containing terephtaldehyde via oxidative polycondensation

ABSTRACTPreparation of conjugated aromatic polyimines, containing phenols in the backbone and side group substitutions, has been successfully achieved by a chemical oxidative polycondensation of a series of Schiff bases using NaOCl as the oxidant at optimum reaction temperature of 90°C. The molecular structures of synthesized compounds were verified by the FT-IR, UV-Vis, 1H-NMR and 13C-NMR techniques. Using thermogravimetric analysis-differential thermal analysis (TG-DTA) and size exclusion chromatography (SEC), the molecular weight distribution parameters and the characterization of all compounds could be specified. The initial degradation temperatures of the polymers were found in the range of 170–271°C. DSC analyses of the polyazomethines (PAMs) were carried out to assign the glass transition temperatures (Tg). UV-Vis measurements gave information about the optical (Eg) band gaps. Fluorescence measurements were carried out to obtain the maximum PL intensities. The spectral analysis outcome signified a blue and a green light emission behavior when irradiated at different wavelengths. Cyclic Voltammetry (CV) was an effective method to explore the HOMO and LUMO energy levels and electrochemical () band gaps of the polymers. The HOMO energy levels of the synthesized polyimines were lower than those of the monomers indicating the more conjugated structures of the polymers. Four-point collinear probe was used to determine the electrical conductivities of both doped and undoped states of the synthesized polymers with respect to doping time with iodine. The morphological properties of the polymers were illustrated using Scanning Electron Microscopy (SEM) images at different amplifications.

Dielectric spectroscopy investigation on relaxation in polyazomethine/fullerene C60 nanocomposites

Nanocomposites based on polyazomethine (PAZ) matrix filled with fullerene C60 (0, 0.25, 0.5, 1, 1.5, and 2.5wt%) were studied with broadband dielectric spectroscopy to investigate the filler effect on the molecular mobility of the polymer chains. The formalism of dielectric loss was used to analyze the dielectric response. Thus two low-temperature non-cooperative local β1- and β2-relaxations and one high-temperature cooperative segmental α-relaxation were found and observed. The increasing C60 content was shown to accelerate the rotational oscillations (β1-relaxation) and to retard the torsional oscillations (β2-relaxation) of the mesogens in the side chain of PAZ. The increasing C60 content (from 0 to 1.5wt%) was found to enhance the attractive C60-polymer segments interaction resulting in retardation of the α-relaxation. As a consequence, the polymer fragility m increases and the glass transition temperature Tg of the PAZ/C60 nanocomposite increases strongly with increasing C60 loading. However, at the maximum C60 content (2.5wt%), the C60 nanoparticles form percolation network resulting in enhanced conductivity of the nanocomposite and weakening the C60/polymer segments interaction. As a consequence, m decreases and Tg tends to decrease towards the value of the pristine PAZ.

Immobilized polyazomethines containing triphenylamine groups on ITO: synthesis and acidochromic, electrochemical, electrochromic and photoelectronic properties

A new series of polyazomethines (PAMs) containing triphenylamine (TPA) as easily-oxidized units were synthesized as highly soluble materials with electrochromism.

Ultra‐low modulus polyazomethines and enhanced adhesion strength with copper foils

Polyazomethines (PAzMs) were prepared from dialdehydes containing different lengths of alkylene groups (m = 2–12) and an ether‐containing common aromatic diamine. The main purpose of this work is to achieve an ultra‐low modulus and a considerably high adhesion strength with a smooth surface (S‐side) of electro‐deposited copper foils for applications as novel coating‐type protective layer materials of flexible printed circuit boards. The elongation at break of the PAzM films was drastically enhanced by increasing the annealing temperature (Ta). The results are probably attributed to a chain extension effect accompanied with solid‐state polymerization promoted at elevated temperatures. An increase in the alkylene chain length (m) led to a gradual decrease in the modulus of the PAzM films owing to an increase in the chain flexibility. It also drastically improved the adhesion strength (S‐side); 8.3 N cm–1 at m = 12 in spite of the absence of anchoring effect. To further decrease the modulus, the PAzM (m = 12) was modified with another diamine comonomer containing a polybutylene oxide block. This approach was very effective for achieving the present target properties; the PAzM copolymer displayed ultra‐low tensile modulus (0.20 GPa) and a very high adhesion strength (9.8 N cm–1) with the S‐side of copper foils. Copyright © 2015 John Wiley &amp; Sons, Ltd.

Semiflexible thermotropic polyazomethines based on o-dianisidine mesogenic core

A new series of thermotropic polyazomethines (PAMs) containing flexible spacers in the main chain and side methoxy groups on the mesogenic core has been synthesised by solution polycondensation reaction of o-dianisidine with α,ω-bis(4-formylphenoxy)-alkanes. A model compound was also synthesised by condensation reaction of o-dianisidine with p-butoxybenzaldehyde, in order to accomplish the structural characterisation and for a better understanding of the polymer properties. Chemical structure of the studied polymers was confirmed by Fourier transform infrared spectroscopy and proton nuclear magnetic resonance spectroscopy, and the supramolecular organisation was determined by powder wide angle X-ray diffraction measurements. The thermal properties of the polymers and model compound were investigated by thermogravimetry, polarised light microscopy and differential scanning calorimetry. The resulting data indicated high thermostability without significant weight loss up to 380°C and nematic liquid crystalline behaviour with large stability range (around 100°C) of the mesophase. Electronic UV–Vis absorption and light emitting ability were also investigated; these PAMs presented broad emission bands in the blue domain.

Polyazomethine as a component of solar cells-theoretical and optical study

A recently synthesized 25Th-cardo polyazomethine (PAZ) and its photocurrent generating junction with [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) have been examined as possible materials for construction of new-generation solar cells. Properties of a 25Th-cardo/PCBM system, where PAZ and PCBM act as donor and acceptor materials, respectively, have been studied theoretically by time-dependent density-functional theory (TD-DFT) and experimentally by means of optical absorption, photocurrent spectroscopy (PCS), and time-resolved luminescence (TRPL). Theoretical calculations show that highest occupied molecular orbital (HOMO) energy levels of PAZ and PCBM are almost equal (values of −6.01 and −5.98eV were obtained with the B3LYP functional and the def2-TZVP orbital basis for PAZ and PCBM, respectively), what suggests a possibility of charge transfer in both directions for this system. The shape of the calculated absorption spectrum is in a qualitative agreement with the experiment. The PCS measurements of the new material show that the external quantum efficiency is the highest (about 0.3%) in the near UV range. The TRPL studies reveal a fast decay of a Langevin type (in picosecond range) of the PAZ-related photoluminescence, which accelerates in presence of PCBM, probably due to the charge transfer to PCBM. In addition, our measurements document a usually neglected process of the hole transfer from a donor to an acceptor. A leakage of holes from PAZ to PCBM is supported by a small energy difference of the HOMO energies, as predicted by theory.

Synthesis, electrochromic, halochromic and electro-optical properties of polyazomethines with a carbazole core and triarylamine units serving as functional groups

A series of aromatic polyazomethines (PAMs) were prepared via direct polycondensation from 9-(2-ethylhexyl)-carbazole-3,6-dicarboxaldehyde and six different types of diamine containing triarylamines.

New air-stable aromatic polyazomethines with triphenylamine or phenylenevinylene moieties towards photovoltaic application

Two air-stable, donor-type aromatic polyazomethines (PAZ) containing triphenylamine (TPA-3B) or phenylenevinylene (PPV-3B) moieties were synthesized and characterized by 1H, 13C NMR, FTIR, TGA, UV–vis, photoluminescence, electrochemical and spectroelectrochemical measurements, X-ray diffraction (XRD) and atomic force microscopy. The main goal is focused on the electronic application of the two polyazomethines in bulk heterojunction (BHJ) polymeric solar cells. The BHJ solar cells were fabricated with the configuration of ITO/PEDOT:PSS/PAZ:PCBM(or PC71BM)/Al, and the best performance was obtained for the active layer with PC71BM, applied as an acceptor. The device constructed with TPA-3B:PC71BM showed the power conversion efficiency 25 times of magnitude higher than PPV-3B:PC71BM measured using AM 1.5G solar simulator at 100mW/cm2 light illumination. In addition, in order to control the electrical properties of PAZ on the performance of organic solar cells impedance spectroscopy experiments were done before and after illumination. Moreover, the morphology of PAZ blended with PCBM (and PC71BM) was investigated by AFM. It was confirmed that both the polymer and fullerene derivatives structure plays an important role in the development of air-stable polymer solar cells.