Optical and Photoelectric Properties of Heterostructures of Fullerene C<sub>60</sub>with Phthalocyanines and Tetracyanoquinodimethane (TCNQ)

Gorishnyi, M.P.; Kovalchuk, O.V.; Koval'chuk, T. N.; Verbitsky, A. B.; Vovk, V. E.

doi:10.1080/15421406.2011.537899

Cited by 10 publications

(11 citation statements)

References 11 publications

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“…GdPc 2 gave split Q bands at 608 and 673 nm and the B bands at 333 and 356 nm at zero applied potential. A small band for GdPc 2 was obtained at 478 nm (Figure ) . All complexes had the similar spectrum in their neutral forms.…”

Section: Resultsmentioning

confidence: 87%

“…Figure depicts in situ UV‐Vis spectral and accompanying color changes monitored during controlled potential electrolysis of DyPc 2 in DCM/TBAP electrolyte system. Before application of any constant potential, the bands at 460 and 922 nm were characteristic for double‐decker Pcs . The Q band at 671 nm shifted to 606 nm with decrease in intensity, and a new sharp band at 696 nm was appeared as the potential of −1.0 V was applied to the working electrode (Figure A).…”

Section: Resultsmentioning

confidence: 99%

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Investigation of electrochemical properties and gas adsorption studies of novel sandwich core phthalocyanines

Şenocak

Köksoy

Demirbaş

et al. 2018

J of Physical Organic Chem

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In this study, bis(tetra-iodo-phthalocyanine)s containing different lanthanide (III) metals, namely, samarium (III) (SmPc 2 ), europium (III) (EuPc 2 ), gadolinium (III) (GdPc 2 ), dysprosium (III) (DyPc 2 ), and terbium (III) (TbPc 2 ) were synthesized for the first time, and their structural characterizations were determined by elemental analyses and different spectroscopic methods such as Ultraviolet-Visible (UV-Vis), Fourier transform infrared (FT-IR), and matrix-assisted laser desorption/ionization-time of flight (MALDI-TOF). Moreover, voltammetric, in situ spectroelectrochemical, chemical redox, and quartz crystal microbalance (QCM) gas adsorption properties of the synthesized compounds were evaluated. The distinct spectral and color changes during the redox reactions for the complexes indicated a potential use in electrochromic materials. In addition, ammonia gas adsorption properties of the complexes were found to be relevant to central metal atom size, and the value for the ammonia gas adsorption at 15 μg/L was the highest for SmPc 2 (20 ng), and the lowest was DyPc 2 (1.4 ng).

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Section: Resultsmentioning

confidence: 87%

Section: Resultsmentioning

confidence: 99%

Investigation of electrochemical properties and gas adsorption studies of novel sandwich core phthalocyanines

Şenocak

Köksoy

Demirbaş

et al. 2018

J of Physical Organic Chem

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“…The values of time delay were varied discretely with an increment of 0.1 ps for the ClAlClPc and 0.2 ps for the PbPc films. In both cases, starting from the thirtieth step, its magnitude increased in geometric progression with a common ratio of about 1.2. and photo-emf of the ITO/PbPc/C 60 /Ag heterostructure at its illumination through the ITO electrode (2 ) (taken from work [16]). Vertical arrows mark the positions of CT bands [15].…”

Section: Experimental Techniquementioning

confidence: 99%

Nature and Kinetics of Non-Stationary Light Absorption Induced by Femtosecond Laser Pulses in Lead Phthalocyanine and Chloro-Aluminum-Chloro-Phthalocyanine Films

Gorishnyi¹

2013

Ukr. J. Phys.

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Spectra of non-stationary light absorption ΔD induced by femtosecond laser pulses in lead phthalocyanine (PbPc) and chloro-aluminum-chloro-phthalocyanine (ClAlClPc) films have been studied. The 210-nm PbPc and 270-nm ClAlClPc films were thermally evaporated in a 6.5-mPa vacuum onto quartz substrates. "Hot" absorption bands induced by electron transitions from non-zero vibronic bands of state S1 into the zero vibronic band of state Sm were registered in the spectral interval of 2.04-2.37 eV. The dependences of the normalized kinetics ΔDn(t) were non-exponential for both films. The experimental curves ΔDn(t) for PbPc and ClAlClPc films are approximated by sums of two and three, respectively, exponents with different relaxation times. K e y w o r d s: Kohlrausch function (a "stretched" exponent), "pump-probe" technique, light absorption, PbPc and ClAlClPc films, femtosecond laser pulses, "hot" bands, temporal kinetics.

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“…Neutral or negatively charged fullerenes form complexes with nitrogen-containing ligands, cations, and some anionic ligands as coordinated, self-assembled crystalline structures. The structure of solid donor–acceptor complex has often been established using single-crystal X-ray analysis [ 30 , 31 ], so determining the pattern in liquid-crystalline solutions is already more of a challenge.…”

Section: Introductionmentioning

confidence: 99%

Exohedral Functionalization of Fullerene by Substituents Controlling of Molecular Organization for Spontaneous C60 Dimerization in Liquid Crystal Solutions and in a Bulk Controlled by a Potential

et al. 2021

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A study was carried out on the possibility of orderly and spontaneous dimerization at room temperature of C60 cages in fullerene liquid crystal fullerene dyads (R-C60). For this purpose, dyads with a structural elements feature supporting π-stacking and Van der Waals interactions were tested, due to the presence of terthiophene donors linked through an α-position or dodecyloxy chains. In addition, this possibility was also tested and compared to dyads with shorter substituents and the pristine C60. Research has shown that only in dyads with the features of liquid crystals, π-dimerization of C60 units occurs, which was verified by electrochemical and spectroelectrochemical (ESR) measurements. Cyclic voltammetry and differential voltammetry studies reveal π-dimerization in liquid crystal dyad solution even without the possibility of previous polymerization (cathodic or anodic) under conditions in the absence of irradiation and without the availability of reaction initiators, and even with the use of preliminary homogenization. These dyads undergo six sequential, one-electron reductions of π-dimer (R-C60···C60-R), where two electrons are added successively to each of the two fullerene cages and first form two radical anion system (R-C60)•−(R-C60)•− without pairing with the characteristics of two doublets. Similarly, the second reductions of π-dimer occur at potentials that are close to the reduction potential for the conversion to a system of two triplet dianions (R-C60)2−(R-C60)2−. Electron paramagnetic resonance spectra indicate a significant interaction between C60 cages. Interestingly, the strength of intermolecular bonds is so significant that it can overcome Coulombic repulsion, even with such highly charged particles as dianions and trianions. Such behavior has been revealed and studied so far only in covalently bonded C60 dimers.

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Optical and Photoelectric Properties of Heterostructures of Fullerene C₆₀with Phthalocyanines and Tetracyanoquinodimethane (TCNQ)

Cited by 10 publications

References 11 publications

Investigation of electrochemical properties and gas adsorption studies of novel sandwich core phthalocyanines

Investigation of electrochemical properties and gas adsorption studies of novel sandwich core phthalocyanines

Nature and Kinetics of Non-Stationary Light Absorption Induced by Femtosecond Laser Pulses in Lead Phthalocyanine and Chloro-Aluminum-Chloro-Phthalocyanine Films

Exohedral Functionalization of Fullerene by Substituents Controlling of Molecular Organization for Spontaneous C60 Dimerization in Liquid Crystal Solutions and in a Bulk Controlled by a Potential

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Optical and Photoelectric Properties of Heterostructures of Fullerene C60with Phthalocyanines and Tetracyanoquinodimethane (TCNQ)

Cited by 10 publications

References 11 publications

Investigation of electrochemical properties and gas adsorption studies of novel sandwich core phthalocyanines

Investigation of electrochemical properties and gas adsorption studies of novel sandwich core phthalocyanines

Nature and Kinetics of Non-Stationary Light Absorption Induced by Femtosecond Laser Pulses in Lead Phthalocyanine and Chloro-Aluminum-Chloro-Phthalocyanine Films

Exohedral Functionalization of Fullerene by Substituents Controlling of Molecular Organization for Spontaneous C60 Dimerization in Liquid Crystal Solutions and in a Bulk Controlled by a Potential

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Optical and Photoelectric Properties of Heterostructures of Fullerene C₆₀with Phthalocyanines and Tetracyanoquinodimethane (TCNQ)