Optical and electrochemical properties of peripherally substituted chromium and manganese phthalocyanines

Amitha, G.S.; Vasudevan, Suni

doi:10.1016/j.poly.2021.115591

Cited by 6 publications

(1 citation statement)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The experimental results show that the Stokes-Shift of compound (DR1) 4 PcZn increases significantly with the increase in the number of (DR1) units on the phthalocyanine core compared to P-HPcZn, indicating that the recombination between the electron acceptor and donor fragment is very pronounced and occurs earlier than the fluorescence emission . When the excitation wavelength is 300 nm, P-HPcZn shows a dominant peak near 450 nm, and the emission band can be associated with the photophysical activity of Zn 2+ ions in the Pc core and the relaxation effect on the ligand-to-metal charge transfer transition. − For Pc-P-Pc, the three absorption and emission peaks correspond to each other, and there is no blueshift of the emission peak over the absorption peak. The absorption peak at 523 nm of Pc-P-Pc is attributed to the absorption of the perylenebisimide group in the modified phthalocyanine molecule, while Pc-P-Pc also has an emission peak at 531 nm, which is also derived from the perylenebisimide group.…”

Section: Resultsmentioning

confidence: 94%

One- and Two-Photon Photophysical Properties, Ultrafast Dynamics, and DFT Study of Three Modified Zinc Phthalocyanines

Zhang,

Wang,

Meng

et al. 2024

J. Phys. Chem. A

View full text Add to dashboard Cite

As two-photon absorption (TPA) materials, phthalocyanine molecules have promising application prospects due to their large TPA absorption cross-section, high thirdorder nonlinear optical susceptibility, and ultrafast response characteristics. In this work, optical properties and the ultrafast response of three modified zinc phthalocyanine molecules (P-HPcZn, Pc-P-Pc, and (DR1) 4 PcZn) were analyzed. No obvious side-shoulder absorption peaks in the Q-band can be observed from the steady-state absorption spectra of the three molecules, confirming the lack of aggregation products in the solutions of our measurement. Open-aperture Z-scan results show relatively large TPA cross-section values of 136.4 and 55.3 GM for Pc-P-Pc and (DR1) 4 PcZn, respectively. The nonlinear optical results show that the absorption process observed under the excitation of femtosecond pulses is a reverse saturable absorption (RSA) mechanism. Up-conversion fluorescence spectra of (DR1) 4 PcZn in THF solution indicate that the fluorescence emission mechanism is TPA. In the study of ultrafast dynamics, the transient absorption spectra were investigated and the decay lifetime of the dynamic traces corresponding to some representative probe wavelengths was obtained through data fitting with a multi-exponential function. Finally, the charge transfer and excited state properties of the modified zinc phthalocyanine molecules were discussed in depth by the DFT method. The energy gaps of P-HPcZn, Pc-P-Pc, and (DR1) 4 PcZn are 2.16, 1.39, and 2.13 eV, respectively. The results indicate that the Pc-P-Pc of donor−acceptor−donor (D-A-D) structure has the smallest energy gap as well as the best charge transfer properties.

show abstract

Section: Resultsmentioning

confidence: 94%

One- and Two-Photon Photophysical Properties, Ultrafast Dynamics, and DFT Study of Three Modified Zinc Phthalocyanines

Zhang,

Wang,

Meng

et al. 2024

J. Phys. Chem. A

View full text Add to dashboard Cite

show abstract

Synthesis and Study of the Physicochemical Properties of a Hybrid Species: Iron Phthalocyanine–Silver Nanoparticles

et al. 2022

View full text Add to dashboard Cite

This article reports a strategy to synthesize a hybrid species made of iron phthalocyanine (FePc) grafted to the surface of silver nanoparticles. The affinity between sulfur and silver on the one hand, and the aptitude of the FePc complex to bind pyridine axially on the other, allowed us to use thiopyridine as a linker between the two entities. The hybrid species, isolated in the solid form for the first time, has been characterized by optical and vibrational spectroscopy, and by transmission electron microscopy. These studies confirm the good aptitude of the linker to connect the FePc to the silver nanoparticles.

show abstract

Non-peripheral tetra methoxylated pyrazoline bearing CoII, CuII and MnIIICl phthalocyanines: Syntheses, electrochemistry and spectroelectrochemistry

Yalazan

Kanteki̇n

Budak

et al. 2022

Journal of Organometallic Chemistry

View full text Add to dashboard Cite

Optical and electrochemical properties of peripherally substituted chromium and manganese phthalocyanines

Cited by 6 publications

References 49 publications

One- and Two-Photon Photophysical Properties, Ultrafast Dynamics, and DFT Study of Three Modified Zinc Phthalocyanines

One- and Two-Photon Photophysical Properties, Ultrafast Dynamics, and DFT Study of Three Modified Zinc Phthalocyanines

Synthesis and Study of the Physicochemical Properties of a Hybrid Species: Iron Phthalocyanine–Silver Nanoparticles

Non-peripheral tetra methoxylated pyrazoline bearing CoII, CuII and MnIIICl phthalocyanines: Syntheses, electrochemistry and spectroelectrochemistry

Contact Info

Product

Resources

About