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Tianyou Peng - One of the best experts on this subject based on the ideXlab platform.
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synthesis of an a2bc type asymmetric zinc Phthalocyanine Derivative for efficient visible near infrared driven h2 evolution on g c3n4
Chemical Engineering Journal, 2019Co-Authors: Jinming Wang, Peng Zeng, Yingying Guo, Guangquan Mei, Tianyou PengAbstract:Abstract By using π-electron-rich thiophene unit to replace one of the benzenoid rings as electron donor and a carboxyl-naphthalene unit as electron acceptor, a novel A2BC-type asymmetric zinc Phthalocyanine Derivative (Zn-di-PcNcTh-2) bearing four diphenylthiophenol substituents as steric hindrance groups is synthesized. The A2BC-type asymmetric structure of Zn-di-PcNcTh-2 causes a strongly split Q-band and wide spectral absorption in the visible/near-infrared region. By using it as a sensitizer of Pt-loaded g-C3N4, the spectral response region of g-C3N4 is extended from ∼450 nm to more than 800 nm, and the corresponding Zn-di-PcNcTh-2-sensitized product delivers an average H2 evolution activity of 232 μmol h−1 with an extremely high turnover number of 23187 h−1 under visible light (λ ≥ 420 nm) irradiation. Moreover, robust apparent quantum yield values of 5.53%, 4.09% and 2.35% are attained at 760, 780 and 800 nm near-infrared monochromatic light, respectively. The prominent bathochromic and electronic push-pull effects due to the introduced diphenylthiophenol substituents, π-electron-rich thiophene and carboxyl-naphthalene units benefit the efficient red/near-infrared-driven H2 evolution of the Zn-di-PcNcTh-2-sensitized g-C3N4.
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Synthesis of an A2BC-type asymmetric zinc Phthalocyanine Derivative for efficient visible/near-infrared-driven H2 evolution on g-C3N4
Chemical Engineering Journal, 2019Co-Authors: Peng Zeng, Jinming Wang, Yingying Guo, Guangquan Mei, Tianyou PengAbstract:Abstract By using π-electron-rich thiophene unit to replace one of the benzenoid rings as electron donor and a carboxyl-naphthalene unit as electron acceptor, a novel A2BC-type asymmetric zinc Phthalocyanine Derivative (Zn-di-PcNcTh-2) bearing four diphenylthiophenol substituents as steric hindrance groups is synthesized. The A2BC-type asymmetric structure of Zn-di-PcNcTh-2 causes a strongly split Q-band and wide spectral absorption in the visible/near-infrared region. By using it as a sensitizer of Pt-loaded g-C3N4, the spectral response region of g-C3N4 is extended from ∼450 nm to more than 800 nm, and the corresponding Zn-di-PcNcTh-2-sensitized product delivers an average H2 evolution activity of 232 μmol h−1 with an extremely high turnover number of 23187 h−1 under visible light (λ ≥ 420 nm) irradiation. Moreover, robust apparent quantum yield values of 5.53%, 4.09% and 2.35% are attained at 760, 780 and 800 nm near-infrared monochromatic light, respectively. The prominent bathochromic and electronic push-pull effects due to the introduced diphenylthiophenol substituents, π-electron-rich thiophene and carboxyl-naphthalene units benefit the efficient red/near-infrared-driven H2 evolution of the Zn-di-PcNcTh-2-sensitized g-C3N4.
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solution processable cu ii Phthalocyanine Derivative as dopant free hole transport layer for efficient and low cost rutile tio2 array based perovskite solar cells
ACS Applied Energy Materials, 2018Co-Authors: Chi Chen, Tianyou Peng, Qingwei Liu, Jing ZhangAbstract:The full-scale commercialization of the organometallic perovskite solar cells, as one of the most high-efficiency photovoltaic technology, needs to lower the cost and improve the long-term stability by further optimizing the device architecture and component materials. In this context, a solution-processable tert-butyl-substituted Cu(II) Phthalocyanine (CuPc(tBu)4) is employed as dopant-free hole transport layer to fabricate a low-cost and high-efficiency perovskite solar cell with a low-temperature processed rutile TiO2 array as electron transport layer and a mixed-ion perovskite (Cs0.05(FA0.83MA0.17)0.95Pb(I0.9Br0.1)3) as light absorber. It is found that the optimized rutile TiO2 array film-based solar cell with the dopant-free Cu(II) Phthalocyanine hole transport layer achieves a power conversion efficiency of 13.7% with less hysteresis, which can be further enhanced to 14.8% after introducing Al2O3 buffer layer between the Cu(II) Phthalocyanine hole transport layer and the perovskite layer due to the ...
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visible near infrared light induced h2 production over g c3n4 co sensitized by organic dye and zinc Phthalocyanine Derivative
ACS Catalysis, 2015Co-Authors: Xiaohu Zhang, Tianyou PengAbstract:A new route is carried out to achieve broad spectral responsive photocatalytic H2 production over g-C3N4 co-sensitized by an indole-based D-π-A organic dye (LI-4) and an asymmetric zinc Phthalocyanine Derivative (Zn-tri-PcNc) with complementary absorption spectra. Experimental results indicate that both LI-4 and Zn-tri-PcNc are efficient photosensitizers of g-C3N4 for H2 production, and their co-sensitized g-C3N4 (LI-4/g-C3N4/Zn-tri-PcNc) exhibits an extremely high H2 production activity (371.4 μmol h–1) under visible/near-infrared (NIR) light (λ ≥ 420 nm) irradiation, which approximates the summation of the H2 production activity of LI-4/g-C3N4 (233.8 μmol h–1) and Zn-tri-PcNc/g-C3N4 (132.3 μmol h–1), although LI-4 and Zn-tri-PcNc can just absorb the light in the range of 400–600 and 600–750 nm, respectively. Moreover, the co-sensitized catalyst shows a broad visible/NIR light responsive range (400–800 nm) with impressively high apparent quantum yields (AQY) of 16.3, 7.7, and 1.75% at 420, 500, and 700 n...
Gabrio Roncucci - One of the best experts on this subject based on the ideXlab platform.
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Determination of tetracationic zinc(II) Phthalocyanine Derivative RLP068 in rabbit serum by liquid chromatography-tandem mass spectrometry.
Journal of chromatography. B Analytical technologies in the biomedical and life sciences, 2004Co-Authors: Giacomo Chiti, Moira Municchi, Valentina Paschetta, Daniele Nistri, Gabrio RoncucciAbstract:The development and validation of a liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for the determination of the tetracationic zinc(II) Phthalocyanine Derivative RLP068 in rabbit serum is described. The dodecadeuterated product (RLP068-D12) was used as co-eluting internal standard. RLP068 was isolated from serum samples by solid-phase extraction using weak cationic exchange cartridges (WCX). An oxidative derivatisation was used in order to simplify the peculiar HPLC and MS behaviour of the analyte and thus increasing sensitivity. Liquid Chromatography was carried out on a Polaris C18 Ether column (50 mm x 2.0 mm) with an isocratic run of 0.5% aqueous TFA/methanol. Detection was achieved by means of a Bruker Esquire 3000+ Ion Trap Mass Spectrometer equipped with an ESI source working in positive mode. A Multiple Reaction Monitoring method following the transitions 297.1 --> 282.1 for the analyte and 300.1 --> 282.1 + 285.1 for the internal standard was used. The analytical method was validated over the concentration range 2-65 ng/mL. lower limits of detection (LLOD) and quantification (LLOQ) were respectively 1 and 2 ng/mL. The method is innovative and applicable to pharmacokinetic studies.
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synthesis of a new water soluble octa cationic Phthalocyanine Derivative for pdt
Tetrahedron Letters, 2000Co-Authors: De Filippis Maria Paola, Donata Dei, Lia Fantetti, Gabrio RoncucciAbstract:Abstract The synthesis and characterization of a new octa-cationic Zn–Phthalocyanine is described. This compound is water-soluble, not aggregated under a wide range of solvent conditions and is a powerful photosensitizer for the inactivation of microorganisms by using a strategy based on photodynamic therapy.
Peng Zeng - One of the best experts on this subject based on the ideXlab platform.
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synthesis of an a2bc type asymmetric zinc Phthalocyanine Derivative for efficient visible near infrared driven h2 evolution on g c3n4
Chemical Engineering Journal, 2019Co-Authors: Jinming Wang, Peng Zeng, Yingying Guo, Guangquan Mei, Tianyou PengAbstract:Abstract By using π-electron-rich thiophene unit to replace one of the benzenoid rings as electron donor and a carboxyl-naphthalene unit as electron acceptor, a novel A2BC-type asymmetric zinc Phthalocyanine Derivative (Zn-di-PcNcTh-2) bearing four diphenylthiophenol substituents as steric hindrance groups is synthesized. The A2BC-type asymmetric structure of Zn-di-PcNcTh-2 causes a strongly split Q-band and wide spectral absorption in the visible/near-infrared region. By using it as a sensitizer of Pt-loaded g-C3N4, the spectral response region of g-C3N4 is extended from ∼450 nm to more than 800 nm, and the corresponding Zn-di-PcNcTh-2-sensitized product delivers an average H2 evolution activity of 232 μmol h−1 with an extremely high turnover number of 23187 h−1 under visible light (λ ≥ 420 nm) irradiation. Moreover, robust apparent quantum yield values of 5.53%, 4.09% and 2.35% are attained at 760, 780 and 800 nm near-infrared monochromatic light, respectively. The prominent bathochromic and electronic push-pull effects due to the introduced diphenylthiophenol substituents, π-electron-rich thiophene and carboxyl-naphthalene units benefit the efficient red/near-infrared-driven H2 evolution of the Zn-di-PcNcTh-2-sensitized g-C3N4.
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Synthesis of an A2BC-type asymmetric zinc Phthalocyanine Derivative for efficient visible/near-infrared-driven H2 evolution on g-C3N4
Chemical Engineering Journal, 2019Co-Authors: Peng Zeng, Jinming Wang, Yingying Guo, Guangquan Mei, Tianyou PengAbstract:Abstract By using π-electron-rich thiophene unit to replace one of the benzenoid rings as electron donor and a carboxyl-naphthalene unit as electron acceptor, a novel A2BC-type asymmetric zinc Phthalocyanine Derivative (Zn-di-PcNcTh-2) bearing four diphenylthiophenol substituents as steric hindrance groups is synthesized. The A2BC-type asymmetric structure of Zn-di-PcNcTh-2 causes a strongly split Q-band and wide spectral absorption in the visible/near-infrared region. By using it as a sensitizer of Pt-loaded g-C3N4, the spectral response region of g-C3N4 is extended from ∼450 nm to more than 800 nm, and the corresponding Zn-di-PcNcTh-2-sensitized product delivers an average H2 evolution activity of 232 μmol h−1 with an extremely high turnover number of 23187 h−1 under visible light (λ ≥ 420 nm) irradiation. Moreover, robust apparent quantum yield values of 5.53%, 4.09% and 2.35% are attained at 760, 780 and 800 nm near-infrared monochromatic light, respectively. The prominent bathochromic and electronic push-pull effects due to the introduced diphenylthiophenol substituents, π-electron-rich thiophene and carboxyl-naphthalene units benefit the efficient red/near-infrared-driven H2 evolution of the Zn-di-PcNcTh-2-sensitized g-C3N4.
Licheng Sun - One of the best experts on this subject based on the ideXlab platform.
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interfacial engineering of perovskite solar cells by employing a hydrophobic copper Phthalocyanine Derivative as hole transporting material with improved performance and stability
Chemsuschem, 2017Co-Authors: Xiaoqing Jiang, Jianbo Lai, Dongping Wang, Xichuan Yang, Licheng Sun, Yuchen Zhang, Ning LeiAbstract:In high-performance perovskite solar cells (PSCs), hole-transporting materials (HTMs) play an important role in extracting and transporting the photo-generated holes from the perovskite absorber to the cathode, thus reducing unwanted recombination losses and enhancing the photovoltaic performance. Herein, solution-processable tetra-4-(bis(4-tert-butylphenyl)amino)phenoxy-substituted copper Phthalocyanine (CuPc-OTPAtBu) was synthesized and explored as a HTM in PSCs. The optical, electrochemical, and thermal properties were fully characterized for this organic metal complex. The photovoltaic performance of PSCs employing this CuPc Derivative as a HTM was further investigated, in combination with a mixed-ion perovskite as a light absorber and a low-cost vacuum-free carbon as cathode. The optimized devices [doped with 6 % (w/w) tetrafluoro-tetracyano-quinodimethane (F4TCNQ)] showed a decent power conversion efficiency of 15.0 %, with an open-circuit voltage of 1.01 V, a short-circuit current density of 21.9 mA cm−2, and a fill factor of 0.68. Notably, the PSC devices studied also exhibited excellent long-term durability under ambient condition for 720 h, mainly owing to the introduction of the hydrophobic HTM interlayer, which prevents moisture penetration into the perovskite film. The present work emphasizes that solution-processable CuPc holds a great promise as a class of alternative HTMs that can be further explored for efficient and stable PSCs in the future.
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A solution-processable copper(II) Phthalocyanine Derivative as a dopant-free hole-transporting material for efficient and stable carbon counter electrode-based perovskite solar cells
Journal of Materials Chemistry A, 2017Co-Authors: Xiaoqing Jiang, Yawei Zhao, Jianbo Lai, Dongping Wang, Xichuan Yang, Licheng SunAbstract:A solution-processable copper(II) Phthalocyanine Derivative coded as CuPc-TIPS has been synthesized and adopted as a hole-transporting material (HTM) in perovskite solar cells (PSCs), in combination with a mixed-ion perovskite absorber and a low-cost carbon cathode. Optimised PSC devices based on pristine CuPc-TIPS without any additives or dopants show a decent power conversion efficiency of 14.0% (measured at 100 mW cm−2 illumination, AM 1.5G), together with a good long-term stability under ambient conditions. The present finding highlights the potential of solution-processed copper Phthalocyanine Derivative-based HTMs for the development of efficient and stable PSCs in the future.
Abdelhamid Errachid - One of the best experts on this subject based on the ideXlab platform.
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novel sensitive impedimetric microsensor for phosphate detection based on a novel copper Phthalocyanine Derivative
Analytical Letters, 2018Co-Authors: Fredj Zina, Naglaa M Nooredeen, Sawsen Azzouzi, Mounir Ben Ali, M N Abbas, Abdelhamid ErrachidAbstract:ABSTRACTA novel electrochemical impedimetric sensor based on new copper Phthalocyanine Derivative-functionalized gold substrates has been developed. The modified transducers have been characterized using Fourier transform infrared spectroscopy and contact angle measurements. Under the optimized conditions in terms of polarization and frequency range, the developed sensor provided a large linear range from 1 × 10−10 to 1 × 10−3 M with a detection limit of 9.48 × 10−11 M. To minimize the impedimetric sensor’s size, a microsensor based on modified gold microelectrodes was developed. Good sensitivity in the range from 1 × 10−8 to 1 × 10−3 M with a limit of detection of 8.32 × 10−9 M was achieved.
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novel iron iii Phthalocyanine Derivative functionalized semiconductor based transducers for the detection of citrate
Organic Electronics, 2016Co-Authors: Sawsen Azzouzi, Mounir Ben Ali, M N Abbas, J Bausells, Nadia Zine, Abdelhamid ErrachidAbstract:Abstract In the present work, we report a novel citrate-selective sensor based on iron (III) Phthalocyanine chloride-C-monoamido-Poly-n-Butyl Acrylate (Fe(III)MAPcCl-P-n-BA) modified silicon nitride and Ion sensitive field effect transistor (ISFET) structures for the electrochemical determination and estimation of the pathophysiological range of citrate. The developed capacitive sensor based on Fe(III)MAPcCl-P-n-BA had a Nernstian sensitivity of (−20.2 ± 1.3) mV/decade with a detection limit of about 7 × 10 −7 M and a linear range from 10 −6 M to 10 −1 M (RSD = 6.2%). Then, the performance of the Fe(III)MAPcCl-P-n-BA functionalized ISFET structure towards the detection of citrate has been investigated. A Nernstian sensitivity of about (−19.8 ± 1.0) mV/decade in the range from 10 −6 M to 10 −1 M was achieved (RSD = 4.8%) which covered the pathologically important clinical range of citrate. The detection limit was about 4 × 10 −7 M. The number of available recognition sites N s and the complexation constant pK were calculated using the enhanced site binding model. A side by side comparison of the developed chemical sensors based on electrolyte-insulator-Semi conductor (EIS) and ISFET structures showed similar characteristics which proves the successful miniaturization of the semiconductor based transducer. The obtained experimental data of the Fe(III)MAPcCl-P-n-BA functionalized ISFET structure were used to validate the TopSPICE ISFET/MEMFET macromodel. The obtained theoretical sensitivity was in good agreement to the experimental one which proves the successful design of the developed ISFET/MEMFET macromodel.
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Citrate-selective electrochemical μ-sensor for early stage detection of prostate cancer
Sensors and Actuators B: Chemical, 2016Co-Authors: Sawsen Azzouzi, Abdelhamid Errachid, Hirak K. Patra, Mounir Ben Ali, Mohammed Nooredeen Abbas, Cherif Dridi, Anthony P.f. TurnerAbstract:The extremely specialised anatomical function of citrate inside the prostate, make it one of the preferred biomarkers for early stage detection of prostate cancer. However, current detection methods are seriously limited due to the very low citrate concentrations that need to be measured in order to follow disease progression. In the present work, we report a novel citrate-selective μ-sensor based on iron (III) Phthalocyanine chloride-C-monoamido-Poly-n-Butyl Acrylate (Fe(III)MAPcCl-P-n-BA) modified gold μ-electrodes for the electrochemical determination and estimation of the pathophysiological range of citrate. The newly synthesised ionophore has been structurally characterised using Fourier transform infrared (FTIR) and UV–vis spectroscopy. Contact angle measurements and atomic force microscopy (AFM) have been used to investigate the adhesion and morphological properties of the membrane. The developed citrate-selective μ-electrodes had a Nernstian sensitivity of −19.34 ± 0.83 mV/decade with a detection limit of about 9 × 10−6 M and a linear range from 4 × 10−5 M to 10−1 M, which covered the pathologically important clinical range. Electrochemical impedance spectroscopy (EIS) showed very high sensitivity with a lower Limit of detection ≈1.7 × 10−9 M and linear detection range (10−8–10−1 M), which is very important not only for the early-stage diagnosis and screening procedures, but also in mapping the stage of the cancer too. Highlights • Potential early warning system for prostate cancer based on a novel single iron Phthalocyanine Derivative modified gold μ-electrodes. • Novel electrochemical μ-sensors for the detection of citrate using potentiometric and impedimetric measurements. • Study of the performances of the developed citrate μ-sensors. • Wide span linear range of detection (10 nM to 100 mM) with a detection limit of (1.7 nM).
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Investigation of structural, optical and electrical properties of a new cobalt Phthalocyanine thin films with potential applications in perchlorate sensor
Synthetic Metals, 2015Co-Authors: Mohammed Braik, C. Dridi, Mohammad Nooredeen Abbas, M Ben Ali, A. Ali, Abdelhamid ErrachidAbstract:Optical, structural and electrical properties of new cobalt Phthalocyanine Derivatives (Co(II)Pc-AP) thin films have been investigated. The Raman spectroscopy study shows the different vibrations bands corresponding to the metalloPhthalocyanine. The cobalt-Phthalocyanine Derivative films exhibit absorption spectra with a resolved electronic structure in the UV-vis range and the energy gap was determined by the Tauc method. Electrical properties of the ITO/Co(II)Pc-AP/Al structure have been investigated by I-V characteristics and impedance spectroscopy measurements. The conduction is governed by space-charge-limited current (SCLC) mechanism. The impedance spectroscopy study showed a hopping transport process, which is a typical behavior of disordered materials. The electrical characteristics of the devices were modeled by a single parallel resistor and capacitor network in series with a resistance.
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Development of a perchlorate sensor based on Co-Phthalocyanine Derivative by impedance spectroscopy measurements
Organic Electronics, 2015Co-Authors: Mohammed Braik, C. Dridi, Mohammad Nooredeen Abbas, M Ben Ali, Abdelhamid ErrachidAbstract:In this work, we have prepared a perchlorate sensor based on cobalt Phthalocyanine Derivative molecules. The membrane was deposited onto gold substrates using dip-coating method. Adhesion and morphological properties have been studied using contact angle measurements. Then, the sensitivity, the detection range and the detection limit were determined using electrochemical impedance spectroscopy (EIS) measurements. The sensor was also studied specificity towards interfering ions nitrate (NO3-), carbonate (CO32-) and sulfate (SO42-) to show the specificity of the membrane. The impedance behavior of the perchlorate sensor (gold/membrane) has been modeled by an equivalent electrical circuit using a modified Randles model for better understanding the phenomena present at the interface membrane/electrolyte.