Chalcone-Appended Metallophthalocyanines: Synthesis, Redox Properties, and Catalytic Oxidation of 2-Mercaptoethanol

Hüseyin Karaca; Özlem Güven; M. Dinesh Kumar; Ravikumar Raju

doi:10.16984/saufenbilder.1786927

Chalcone-Appended Metallophthalocyanines: Synthesis, Redox Properties, and Catalytic Oxidation of 2-Mercaptoethanol

Abstract

A novel series of metallophthalocyanines (M = Zn, Co, Cd), each bearing four peripheral chalcone groups, was synthesized and its characterization was carried out through FT-IR, NMR (¹H and ¹³C), HRMS, UV-Vis spectroscopy. Electrochemical investigations revealed distinctive redox behaviors for each complex. Notably, Pc-6 underwent non-reversible reduction (−0.86 V) and oxidation (0.20 V), while Pc-7 and Pc-8 showed reversible reductions at −0.65 V and −0.64 V, respectively. Spectroelectrochemical analysis indicated that Pc-6 and Pc-8 rapidly decomposed following ring-based redox events, whereas Pc-7 displayed a more stable and dynamic transformation, characterized by distinct isosbestic points and the emergence of new absorption bands. This behavior underscores the enhanced electronic delocalization and redox stability of Pc-7. Furthermore, Pc-7 demonstrated catalytic activity in the oxidation of 2-mercaptoethanol, yielding a turnover number of 45.84 and an initial rate of 0.084 µmol·s⁻¹. These results highlight the potential of chalcone-functionalized phthalocyanines, especially Pc-7, as robust redox-active and catalytic materials.

Keywords

Supporting Institution

Sakarya University

Project Number

BAPK 2025-27-70-50

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H. Karaca, “Catalytic oxidation of 2-mercaptoethanol by cobalt(II) phthalocyanines bearing chalcone with furan and thiophene,” Sakarya Univ. J. Sci., vol. 22, no. 6, pp. 1699–1703, Dec. 2018, doi: 10.16984/saufenbilder.407781.

Details

Primary Language

English

Subjects

Inorganic Chemistry (Other)

Journal Section

Research Article

Authors

Hüseyin Karaca ^*
0000-0003-2636-5836
Türkiye

Özlem Güven
0000-0000-0000-0000
Türkiye

M. Dinesh Kumar
0000-0000-0000-0001
India

Ravikumar Raju
0000-0000-0000-0002
India

Early Pub Date

July 23, 2026

Publication Date

-

Submission Date

September 19, 2025

Acceptance Date

May 16, 2026

Published in Issue

Year 2026 Number: Advanced Online Publication

DOI

https://doi.org/10.16984/saufenbilder.1786927

IZ

https://izlik.org/JA84CA27ST

Cite

RIS / Bibtex

APA

Karaca, H., Güven, Ö., Kumar, M. D., & Raju, R. (2026). Chalcone-Appended Metallophthalocyanines: Synthesis, Redox Properties, and Catalytic Oxidation of 2-Mercaptoethanol. Sakarya University Journal of Science, Advanced Online Publication, 562-579. https://doi.org/10.16984/saufenbilder.1786927

AMA

1.Karaca H, Güven Ö, Kumar MD, Raju R. Chalcone-Appended Metallophthalocyanines: Synthesis, Redox Properties, and Catalytic Oxidation of 2-Mercaptoethanol. SAUJS. 2026;(Advanced Online Publication):562-579. doi:10.16984/saufenbilder.1786927

Chicago

Karaca, Hüseyin, Özlem Güven, M. Dinesh Kumar, and Ravikumar Raju. 2026. “Chalcone-Appended Metallophthalocyanines: Synthesis, Redox Properties, and Catalytic Oxidation of 2-Mercaptoethanol”. Sakarya University Journal of Science, no. Advanced Online Publication: 562-79. https://doi.org/10.16984/saufenbilder.1786927.

EndNote

Karaca H, Güven Ö, Kumar MD, Raju R (July 1, 2026) Chalcone-Appended Metallophthalocyanines: Synthesis, Redox Properties, and Catalytic Oxidation of 2-Mercaptoethanol. Sakarya University Journal of Science Advanced Online Publication 562–579.

IEEE

[1]H. Karaca, Ö. Güven, M. D. Kumar, and R. Raju, “Chalcone-Appended Metallophthalocyanines: Synthesis, Redox Properties, and Catalytic Oxidation of 2-Mercaptoethanol”, SAUJS, no. Advanced Online Publication, pp. 562–579, July 2026, doi: 10.16984/saufenbilder.1786927.

ISNAD

Karaca, Hüseyin - Güven, Özlem - Kumar, M. Dinesh - Raju, Ravikumar. “Chalcone-Appended Metallophthalocyanines: Synthesis, Redox Properties, and Catalytic Oxidation of 2-Mercaptoethanol”. Sakarya University Journal of Science. Advanced Online Publication (July 1, 2026): 562-579. https://doi.org/10.16984/saufenbilder.1786927.

JAMA

1.Karaca H, Güven Ö, Kumar MD, Raju R. Chalcone-Appended Metallophthalocyanines: Synthesis, Redox Properties, and Catalytic Oxidation of 2-Mercaptoethanol. SAUJS. 2026;:562–579.

MLA

Karaca, Hüseyin, et al. “Chalcone-Appended Metallophthalocyanines: Synthesis, Redox Properties, and Catalytic Oxidation of 2-Mercaptoethanol”. Sakarya University Journal of Science, no. Advanced Online Publication, July 2026, pp. 562-79, doi:10.16984/saufenbilder.1786927.

Vancouver

1.Hüseyin Karaca, Özlem Güven, M. Dinesh Kumar, Ravikumar Raju. Chalcone-Appended Metallophthalocyanines: Synthesis, Redox Properties, and Catalytic Oxidation of 2-Mercaptoethanol. SAUJS. 2026 Jul. 1;(Advanced Online Publication):562-79. doi:10.16984/saufenbilder.1786927