Vibrational spectra of charge transfer complexes of lead phthalocyanine

Oza, A. T.; Patel, Shivam; Patel, Ranjan G.; Prajapati, Sujit; Vaidya, Rajiv

doi:10.1016/j.tsf.2004.08.187

Cited by 8 publications

(3 citation statements)

References 27 publications

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“…This finding is consistent with the previous adsorption kinetics results [38,39]. We can see the film forming units, which initially seem small "lying" rods that can be due to aggregation of adjacent NiTsPc rings in the films, which are driving by intermolecular forces [40,41]. Figure 3 (log-log) shows that the heights of aggregates increases when their diameters decreases.…”

Section: Resultssupporting

confidence: 91%

Morphological Structure Characterization of PAH/NiTsPc Multilayer Nanostructured Films

Silva¹,

Brito²,

Tanimoto³

et al. 2011

MSA

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Section: Resultssupporting

confidence: 91%

Morphological Structure Characterization of PAH/NiTsPc Multilayer Nanostructured Films

Silva¹,

Brito²,

Tanimoto³

et al. 2011

MSA

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“…In the case of nanostructured PAH (or PAH-AuNP)/MTsPc films the driving force is primarily the electrostatic attraction of oppositely charged materials. 1,21 Aggregation of adjacent NiTsPc rings, 26,36 a well-known phenomenon in phthalocyanine chemistry, 37,38 caused the bands assigned to n(C-H) asymmetric stretching in alkyl groups and intermolecular phonons, 30,32 at 2770-2900 region and 1712 cm À1 , respectively, to practically disappear. Because these bands disappear in the spectra of LbL films, such aggregation does not occur to the same extent.…”

Section: Resultsmentioning

confidence: 99%

Synergistic interaction between gold nanoparticles and nickel phthalocyanine in layer-by-layer (LbL) films: evidence of constitutional dynamic chemistry (CDC)

Alencar

Crespilho

Martins

et al. 2009

Phys. Chem. Chem. Phys.

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The concept of constitutional dynamic chemistry (CDC) based on the control of non-covalent interactions in supramolecular structures is promising for having a large impact on nanoscience and nanotechnology if adequate nanoscale manipulation methods are used. In this study, we demonstrate that the layer-by-layer (LbL) technique may be used to produce electroactive electrodes with ITO coated by tetrasulfonated nickel phthalocyanine (NiTsPc) alternated with poly(allylamine hydrochloride) (PAH) incorporating gold nanoparticles (AuNP), in which synergy has been achieved in the interaction between the nanoparticles and NiTsPc. The catalytic activity toward hydrogen peroxide (H(2)O(2)) in multilayer films was investigated using cyclic voltammetry, where oxidation of H(2)O(2) led to increased currents in the PAH-AuNP/NiTsPc films for the electrochemical processes associated with the phthalocyanine ring and nickel at 0.52 and 0.81 V vs. SCE, respectively, while for PAH/NiTsPc films (without AuNP) only the first redox process was affected. In control experiments we found out that the catalytic activity was not solely due to the presence of AuNP, but rather to the nanoparticles inducing NiTsPc supramolecular structures that favored access to their redox sites, thus yielding strong charge transfer. The combined effects of NiTsPc and AuNP, which could only be observed in nanostructured LbL films, point to another avenue to pursue within the CDC paradigm.

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“…The indirect transition was attributed to the metal-ligand vibrations in a chelate interacting with electronic motions. This was also verified for phthalocyanine ligand [20,21]. Some of the binary complexes based on bis(N-R-salicylaldiminato)M II have shown semimetallic nature with negative band gap [22].…”

Section: Introductionmentioning

confidence: 72%

Spectroscopic Study of Ternary CT Complexes Based on the Organometallic Donor – Bis(Diphenylglyoximato)Ni^II

Patel

Oza

2008

Molecular Crystals and Liquid Crystals

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The infrared spectra of the ternary complexes based on the organometallic chelate, namely, bis(N-diphenylglyoximato) Ni II working as an electron donor with standard organic acceptors like TCNQ, TCNE, chloranil, and DDQ have been studied for the first time keeping iodine as common acceptor for the four complexes. It is found that binary complexes of Ni (Hdpg) 2 are semiconductors while the four ternary complexes exhibit semimetallic behavior. However, in chloranil and DDQ complexes, this modification is not as pronounced as observed in TCNQ and TCNE complexes.

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Vibrational spectra of charge transfer complexes of lead phthalocyanine

Cited by 8 publications

References 27 publications

Morphological Structure Characterization of PAH/NiTsPc Multilayer Nanostructured Films

Morphological Structure Characterization of PAH/NiTsPc Multilayer Nanostructured Films

Synergistic interaction between gold nanoparticles and nickel phthalocyanine in layer-by-layer (LbL) films: evidence of constitutional dynamic chemistry (CDC)

Spectroscopic Study of Ternary CT Complexes Based on the Organometallic Donor – Bis(Diphenylglyoximato)Ni^II

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Vibrational spectra of charge transfer complexes of lead phthalocyanine

Cited by 8 publications

References 27 publications

Morphological Structure Characterization of PAH/NiTsPc Multilayer Nanostructured Films

Morphological Structure Characterization of PAH/NiTsPc Multilayer Nanostructured Films

Synergistic interaction between gold nanoparticles and nickel phthalocyanine in layer-by-layer (LbL) films: evidence of constitutional dynamic chemistry (CDC)

Spectroscopic Study of Ternary CT Complexes Based on the Organometallic Donor – Bis(Diphenylglyoximato)NiII

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Spectroscopic Study of Ternary CT Complexes Based on the Organometallic Donor – Bis(Diphenylglyoximato)Ni^II