Electronic structure of CuTPP and CuTPP(F) complexes: a combined experimental and theoretical study II

2016 ◽  
Vol 18 (36) ◽  
pp. 24890-24904 ◽  
Author(s):  
Giulia Mangione ◽  
Mauro Sambi ◽  
Silvia Carlotto ◽  
Andrea Vittadini ◽  
Giovanni Ligorio ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Dft Calculations ◽  
Theoretical Study ◽  
Thick Films ◽  
Nexafs Spectroscopy ◽  
Td Dft

CuTPP and CuTPP(F) thick films deposited on Au(111) have been studied by coupling NEXAFS spectroscopy at the C/N/FK-edges and CuL2,3-edges and spin-unrestricted TD-DFT calculations.

Electronic structure of the S1state in methylcobalamin: Insight from CASSCF/MC-XQDPT2, EOM-CCSD, and TD-DFT calculations

2013 ◽  
Vol 34 (12) ◽  
pp. 987-1004 ◽  
Author(s):  
Karina Kornobis ◽  
Neeraj Kumar ◽  
Piotr Lodowski ◽  
Maria Jaworska ◽  
Piotr Piecuch ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Dft Calculations ◽  
Td Dft

XAS of tetrakis(phenyl)- and tetrakis(pentafluorophenyl)-porphyrin: an experimental and theoretical study

2015 ◽  
Vol 17 (3) ◽  
pp. 2001-2011 ◽  
Author(s):  
Marco Vittorio Nardi ◽  
Roberto Verucchi ◽  
Luca Pasquali ◽  
Angelo Giglia ◽  
Giovanna Fronzoni ◽  
...  
Keyword(s):  
Dft Calculations ◽  
Oscillator Strength ◽  
Theoretical Study ◽  
Excitation Energies ◽  
Porphyrin Macrocycle ◽  
Td Dft

NEXAFS outcomes and TD-DFT calculations pertaining to H2TPP and H2TPP(F) demonstrate the electronic inertness of b1u porphyrin macrocycle 1s → π* excitations. In fact, corresponding excitation energies, but not their oscillator strength values, are substantially unaffected upon fluorination of Ph rings.

MCD spectroscopy and TD-DFT calculations of a naphthalene-ring-bridged coplanar binuclear phthalocyanine dimer

2013 ◽  
Vol 17 (06n07) ◽  
pp. 489-500 ◽  
Author(s):  
John Mack ◽  
Xu Liang ◽  
Tatiana V. Dubinina ◽  
Larisa G. Tomilova ◽  
Tebello Nyokong ◽  
...  
Keyword(s):  
Experimental Data ◽  
Optical Properties ◽  
Electronic Structure ◽  
Dft Calculations ◽  
Singlet Oxygen ◽  
Magnetic Circular Dichroism ◽  
Basis Sets ◽  
Naphthalene Ring ◽  
B3lyp Functional ◽  
Td Dft

Magnetic circular dichroism (MCD) spectroscopy and TD-DFT calculations are used to analyze the electronic structure and optical properties of an alkyl-substituted naphthalene-ring-bridged coplanar binuclear phthalocyanine dimer. An analysis of the MCD spectrum of the naphthalene-ring-bridged dimer relative to those of benzene-bridged compounds reported previously, demonstrates that there is a significantly weaker interaction between the two phthalocyanine rings. TD-DFT results obtained using the B3LYP functional with 6–31G basis sets were found to be problematic. Closer agreement with the experimental data is obtained when the CAM-B3LYP functional is used instead. The naphthalene-ring-bridged compound is found to be unsuitable for use as a photosensitizer for the formation of singlet oxygen, because the ΦT values are negligible.

scholarly journals Theoretical study on the electronic structure and second-order nonlinear optical properties of benzannulated or selenophene-annulated expanded helicenes

RSC Advances ◽  
2019 ◽  
Vol 9 (30) ◽  
pp. 17382-17390 ◽  
Author(s):  
Li-jing Gong ◽  
Chun-yu Liu ◽  
Cheng Ma ◽  
Wan-feng Lin ◽  
Jin-kai Lv ◽  
...  
Keyword(s):  
Optical Properties ◽  
Electronic Structure ◽  
Dft Calculations ◽  
Nonlinear Optical ◽  
Theoretical Study ◽  
Second Order ◽  
Nonlinear Optical Properties

The nonlinear optical properties of the studied helicenes were studied with the aid of the DFT calculations.

Push-pull type Co(III)corroles: Synthesis, electronic structure and electrochemical catalysis

2021 ◽  
pp. A-I
Author(s):  
Yingjie Niu ◽  
Weihua Zhu ◽  
John Mack ◽  
Nadine Dubazana ◽  
Tebello Nyokong ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Dft Calculations ◽  
Electrochemical Properties ◽  
Rational Design ◽  
Structure Property ◽  
Electrochemical Catalysis ◽  
Highly Efficient ◽  
Structure Property Relationships ◽  
Td Dft ◽  
Push And Pull

The rational design and preparation of three A2B type Co(III)triarylcorroles with push- and pull-substituents are reported. The structure-property relationships were identified by comparing their optically spectroscopic and electrochemical properties to trends predicted in DFT and TD-DFT calculations. The results demonstrate that the Co(III)triarylcorroles are highly efficient catalysts for electrocatalyzed hydrogen evolutions (HERs) and oxygen reductions (ORRs), and that their reactivity can be modulated by changing the meso-B-substituent of the Co(III)Corroles.

Pyridone substituted phthalocyanines: Photophysico-chemical properties and TD-DFT calculations

2018 ◽  
Vol 22 (01n03) ◽  
pp. 25-31 ◽  
Author(s):  
Şaziye Abdurrahmanoğlu ◽  
Mevlüde Canlıca ◽  
John Mack ◽  
Tebello Nyokong
Keyword(s):  
Electronic Structure ◽  
Nmr Spectroscopy ◽  
Dft Calculations ◽  
Chemical Properties ◽  
Quantum Yields ◽  
Visible Absorption ◽  
H Nmr ◽  
Td Dft ◽  
Ft Ir ◽  
Uv Visible

4-(6-methyl-3-nitro-2-oxo-1,2-dihydropyridin-4-yloxy)phthalonitrile has been used to prepare a novel Zn(II) phthalocyanines with four peripheral pyridone substituents. The compound has been characterized by UV-visible absorption, FT-IR and [Formula: see text]H-NMR spectroscopy, elemental analysis and MALDI-TOF mass spectroscopy. The fluorescence, triplet quantum and singlet oxygen quantum yields have been determined and TD-DFT calculations have been used to identify trends in the electronic structure.

NEXAFS and XPS studies of nitrosyl chloride

2015 ◽  
Vol 17 (14) ◽  
pp. 9040-9048 ◽  
Author(s):  
Luca Schio ◽  
Cui Li ◽  
Susanna Monti ◽  
Peter Salén ◽  
Vasyl Yatsyna ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Fine Structure ◽  
Gas Phase ◽  
Theoretical Study ◽  
Nitrosyl Chloride ◽  
X Ray ◽  
Absorption Fine ◽  
Nexafs Spectroscopy ◽  
X Ray Absorption

The electronic structure of nitrosyl chloride (ClNO) has been investigated in the gas phase by X-ray Photoelectron (XPS) and Near Edge X-ray Absorption Fine Structure (NEXAFS) spectroscopy at the Cl 2p, Cl 2s, N 1s and O 1s edges in a combined experimental and theoretical study.

A theoretical study of the photodynamics of salicylidene-2-anthrylamine in acetonitrile solution

2018 ◽  
Vol 20 (46) ◽  
pp. 29399-29411 ◽  
Author(s):  
Wilver A. Muriel ◽  
Juan F. Botero-Cadavid ◽  
Carlos Cárdenas ◽  
William Rodríguez-Córdoba
Keyword(s):  
Molecular Dynamics ◽  
Electronic Structure ◽  
Excited State ◽  
Theoretical Study ◽  
Electronic Structure Calculations ◽  
Acetonitrile Solution ◽  
Td Dft ◽  
Dynamics Simulations ◽  
Structure Calculations ◽  
Photoinduced Processes

The ultrafast photoinduced processes of salicylidene-2-anthrylamine (2-AntSA) in acetonitrile solution have been investigated using DFT/TD-DFT static electronic structure calculations and excited state ab initio molecular dynamics simulations.

Comparative theoretical study of the UV/Vis absorption spectra of styrylpyridine compounds using TD-DFT calculations

2012 ◽  
Vol 19 (5) ◽  
pp. 2015-2026 ◽  
Author(s):  
Maria Eugenia Castro ◽  
M. Judith Percino ◽  
Victor M. Chapela ◽  
Guillermo Soriano-Moro ◽  
Margarita Ceron ◽  
...  
Keyword(s):  
Dft Calculations ◽  
Absorption Spectra ◽  
Theoretical Study ◽  
Td Dft
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