Spectrophotometric-chemometrics study of the effect of solvent composition and temperature on the spectral shape and shift of copper and nickel phthalocyanines in different aqueous-nonaqueous mixed solvents

Moradian, Sahar; Dezhampanah, Hamid; Ghasemi, Jahan B.; Behnejad, Hasan

doi:10.1016/j.saa.2019.117621

Cited by 12 publications

(3 citation statements)

References 47 publications

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“…Bu katkı malzemeleri içerisinde Ftalosiyaninler aromatik, makrosiklik [9], [10] bileşiklerdir. Ftalosiyaninlerin moleküler yapısı iki boyutlu 18π-elektron konjuge sistemine sahiptir; bu özelliklerinden dolayı elektron transfer kabiliyetine sahiptir [11].…”

Section: Introductionunclassified

“…Ftalosiyaninlerin moleküler yapısı iki boyutlu 18π-elektron konjuge sistemine sahiptir; bu özelliklerinden dolayı elektron transfer kabiliyetine sahiptir [11]. Bu özellikler ftalosiyaninlerin boyarmadde, mürekkep [12], [13], organik güneş pilleri [14], sıvı kristallerle birleştirilmiş görüntüleme teknolojileri [15] gibi birçok uygulamada kullanılmasına olanak sağlar. Son yıllarda sıvı kristal yapılarda katkı malzemesi olarak tercih edilen bir diğer malzeme de kuantum noktalardır.…”

Section: Introductionunclassified

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Estimation of Dielectric Constant of Ni(II)Pc and CdSeS/ZnS QDs Dope Liquid Crystal Structures by Machine Learning Algorithms

Aksoy

Önsal

Uğurlu

2023

Düzce Üniversitesi Bilim Ve Teknoloji Dergisi

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Bu çalışmada, Ni(II)Pc (nikel(II)ftalosiyanin) ve CdSeS/ZnS (cadmium selenide sulfide/zinc sulfide) kuantum nokta katkılı 5CB (4-pentyl-4′-cyanobiphenyl) nematik sıvı kristal kompozit yapıların dielektrik özellikleri ile birlikte bu özelliklerin makine öğrenmesi algoritmaları ile tahminlenmesi rapor edilmektedir. Konsantrasyon oranının dielektrik özelliklere etkilerini saptamak için 5CB nematik sıvı kristal yapıya ağırlıkça %2 ve %5 oranında Ni(II)Pc ve CdSeS/ZnS kuantum nokta katkılanmıştır. Numunelerin dielektrik ölçümleri, dielektrik spektroskopi yöntemi kullanılarak gerçekleştirilmiştir. Ayrıca, dielektrik sabitinin reel (ε^') ve sanal bileşenlerinin (ε^'') tahmini için k-En Yakın Komşu, Karar Ağacı, Rastgele Orman algoritmaları kullanmış ve algoritmaların tahmin performansları karşılaştırmalı olarak incelenmiştir. Algoritmalarda girdi parametreleri frekans, voltaj ve katkı oranı; çıktı parametreleri ise, dielektrik sabitinin reel (ε^') ve sanal bileşenleri (ε^'') olarak belirlenmiştir. Elde edilen sonuçlara göre dielektrik sabitinin en iyi tahmin performansına Rastgele Orman algoritması ile ulaşılmıştır.

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Section: Introductionunclassified

Estimation of Dielectric Constant of Ni(II)Pc and CdSeS/ZnS QDs Dope Liquid Crystal Structures by Machine Learning Algorithms

Aksoy

Önsal

Uğurlu

2023

Düzce Üniversitesi Bilim Ve Teknoloji Dergisi

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“…Phthalocyanines are synthetic analogues of porphyrins consisting of four isoindolic rings connected by four nitrogen meso-atoms having a sp 2 -hybridization. High stability of delocalized 18-electron π-conjugate system of phthalocyanine, especially upon formation metal complex, gives high stability to macrocycle, determines specific physical and physical-chemical properties of this compounds and causes a plurality of various usage [1][2][3][4][5][6][7][8][9]. Thus, the absorption in visible region based on π-π * transition allows to apply macrocycles as photoresistant dyes and pigments [10,11].…”

Section: Introductionmentioning

confidence: 99%

Bulky-substituted phthalodinitriles and cobalt and copper phthalocyanines based on them: synthesis, thermal analysis and spectroscopic properties

Erzunov

Tikhomirovа

Botnar

et al. 2020

J Therm Anal Calorim

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By the nucleophilic substitution of the nitro group in 4-nitrophthalononitrile for the residues of alkoxy-substituted phenols, the synthesis of alkoxyphenoxyphthalonitriles was carried out. By template condensation of the substituted phthalonitriles obtained with copper and cobalt acetates at 200 °C, the corresponding phthalocyaninates were obtained. The conditions for the isolation and purification of the complexes synthesized were selected. The stability of substituted phthalonitriles and phthalocyaninates synthesized based on them regarding to heating in an argon-oxygen medium was evaluated (1:1 ratio). It was found the compounds obtained are thermally stable, and the destruction of phthalocyanines begins at lower temperatures compared to the corresponding phthalonitriles. For the complexes synthesized, the spectroscopic properties in organic solvents and concentrated sulfuric acid were studied. The influence of the nature of the substituent, metal complexing agent and solvent on the nature of the spectroscopic curves and the position of the main absorption band of phthalocyanine complexes has been established. It is noted passing from polar aprotic solvents to nonpolar ones, a shift of the maximum of the Q absorption band for the studied macrocycles was observed. Electronic absorption spectra in sulfuric acid show a significant bathochromic shift of the absorption band. An increase in the length of the alkyl substituent practically was found not to affect the position of the absorption maximum. Passing from complexes with Co(II) to Cu(II), a bathochromic shift of the absorption maximum was observed.

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A New Type of Composite Catalyst α-nBACoPc/SnO2 Synergistic Photo-Catalytic Degradation of Dyes

Yin,

Jiang,

et al. 2024

J Appl Spectrosc

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Spectrophotometric-chemometrics study of the effect of solvent composition and temperature on the spectral shape and shift of copper and nickel phthalocyanines in different aqueous-nonaqueous mixed solvents

Cited by 12 publications

References 47 publications

Estimation of Dielectric Constant of Ni(II)Pc and CdSeS/ZnS QDs Dope Liquid Crystal Structures by Machine Learning Algorithms

Estimation of Dielectric Constant of Ni(II)Pc and CdSeS/ZnS QDs Dope Liquid Crystal Structures by Machine Learning Algorithms

Bulky-substituted phthalodinitriles and cobalt and copper phthalocyanines based on them: synthesis, thermal analysis and spectroscopic properties

A New Type of Composite Catalyst α-nBACoPc/SnO2 Synergistic Photo-Catalytic Degradation of Dyes

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