Highly selective thioalcohol modified phthalocyanine sensors for Ag(I) and Pd(II) based on target induced J- and H-type aggregations: synthesis, electrochemistry and peripheral metal ion binding studies

Dalton Transactions : an International Journal of Inorganic Chemistry
Ahmet T BilgiçliAli Rıza Ozkaya

Abstract

We have described highly selective 1(4),8(11),15(18),22(25)-(1-hydroxyhexan-3-ylthio)-phthalocyanine sensors, M{Pc[α-SCH(C(3)H(7))(C(2)H(5)OH)](4)} (MPc(α-HHT)(4), where M = Zn(II) (2), Cu(II) (3) or Co(II) (4) and HHT: -SCH(C(3)H(7))(C(2)H(5)OH)). The formation of S-M-S {S = sulfur; M = Ag(I) or Pd(II)} bonds on the periphery in the case of Ag(I) and Pd(II) metal ions induces H- or J-aggregation, respectively, which results in significant changes in the absorption of the B- and, in particular, the Q-band. The binding ratios of Ag(I) to the periphery of 2 and 3 were found to be ca. 2:1 and 3:2, respectively. On the other hand, the binding ratios of Pd(II) to the periphery of the same compounds were found to be 3:1 and 4:1. The fluorescence of 2 exhibited distinct changes in response to treatment with Ag(I) and Pd(II) ions in solution. The fluorescence spectra emission intensity of 2 was quenched upon titration with Ag(I) and Pd(II) and a new emission maximum was observed upon titration with Pd(II). FTIR, (1)H-NMR, (13)C-NMR, UV-vis, MALDI-TOF MS and elemental analysis data were used to characterize the novel compounds. Transmission electron microscopy (TEM) and field-emission scanning electron microscopy (FE-SEM) were also used...Continue Reading

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Feb 4, 2003·Inorganic Chemistry·Sarah L J MichelBrian M Hoffman
Feb 8, 2006·Langmuir : the ACS Journal of Surfaces and Colloids·Kenta AdachiHitoshi Watarai
Mar 23, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Xin HuangChen-Ho Tung
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Apr 16, 2010·Chemical Communications : Chem Comm·Hua LuNagao Kobayashi
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Citations

Dec 17, 2016·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Ojodomo J Achadu, Tebello Nyokong
May 26, 2016·Physical Chemistry Chemical Physics : PCCP·P BatatA L Demirel
Mar 16, 2021·Journal of Biological Inorganic Chemistry : JBIC : a Publication of the Society of Biological Inorganic Chemistry·Ayşegül TekbabaM Nilüfer Yarasir
Oct 28, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Ahmet T BilgiçliM Nilüfer Yarasir

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