Conformational Flexibility and Absolute Stereochemistry of (3R)-3-hydroxy-4-aryl-β-lactams Investigated by Chiroptical Properties and TD-DFT Calculations

Chirality ◽  
2012 ◽  
Vol 24 (9) ◽  
pp. 741-750 ◽  
Author(s):  
Daniele Tedesco ◽  
Riccardo Zanasi ◽  
Andrea Guerrini ◽  
Carlo Bertucci
Keyword(s):  
Dft Calculations ◽  
Conformational Flexibility ◽  
Chiroptical Properties ◽  
Td Dft ◽  
Absolute Stereochemistry

scholarly journals Theoretical investigations on the structure–property relationships of Au13and AuxM13−xnanoclusters

RSC Advances ◽  
2017 ◽  
Vol 7 (81) ◽  
pp. 51538-51545 ◽  
Author(s):  
Ying Lv ◽  
Xi Kang ◽  
Sha Yang ◽  
Tao Chen ◽  
Ao Liu ◽  
...  
Keyword(s):  
Dft Calculations ◽  
Structure Property ◽  
Structure Property Relationships ◽  
Theoretical Investigations ◽  
Td Dft

The effect of ligands and dopants on AuxM13−xNCs was studied by DFT and TD-DFT calculations.

Exploring of Indole Derivatives for ESIPT Emission: A New ESIPT-based Fluorescence Skeleton and TD-DFT Calculations

2021 ◽  
pp. 113487
Author(s):  
Serdal Kaya ◽  
Hatice Gülten Aydın ◽  
Selbi Keskin ◽  
Zeynep Ekmekci ◽  
Nurettin Menges
Keyword(s):  
Dft Calculations ◽  
Indole Derivatives ◽  
Td Dft

scholarly journals Naphthyridine derived colorimetric and fluorescent turn off sensors for Ni2+ in aqueous media

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Abida Ashraf ◽  
Muhammad Islam ◽  
Muhammad Khalid ◽  
Anthony P. Davis ◽  
Muhammad Tayyeb Ahsan ◽  
...  
Keyword(s):  
Dft Calculations ◽  
Color Change ◽  
Aqueous Media ◽  
Field Measurements ◽  
Spectral Changes ◽  
Energy Gaps ◽  
Td Dft ◽  
Distinct Color ◽  
Uv Visible ◽  
Metal Charge Transfer

AbstractHighly selective and sensitive 2,7-naphthyridine based colorimetric and fluorescence “Turn Off” chemosensors (L1-L4) for detection of Ni2+ in aqueous media are reported. The receptors (L1-L4) showed a distinct color change from yellow to red by addition of Ni2+ with spectral changes in bands at 535–550 nm. The changes are reversible and pH independent. The detection limits for Ni2+ by (L1-L4) are in the range of 0.2–0.5 µM by UV–Visible data and 0.040–0.47 µM by fluorescence data, which is lower than the permissible value of Ni2+ (1.2 µM) in drinking water defined by EPA. The binding stoichiometries of L1-L4 for Ni2+ were found to be 2:1 through Job’s plot and ESI–MS analysis. Moreover the receptors can be used to quantify Ni2+ in real water samples. Formation of test strips by the dip-stick method increases the practical applicability of the Ni2+ test for “in-the-field” measurements. DFT calculations and AIM analyses supported the experimentally determined 2:1 stoichiometries of complexation. TD-DFT calculations were performed which showed slightly decreased FMO energy gaps due to ligand–metal charge transfer (LMCT).

TD-DFT calculations of the excited states of metalloporphyrins relevant to organic solar photovoltaic cells

2014 ◽  
Vol 18 (06) ◽  
pp. 475-492 ◽  
Author(s):  
Neha Agnihotri ◽  
Ronald P. Steer
Keyword(s):  
Dft Calculations ◽  
Electronic State ◽  
Excited States ◽  
Photovoltaic Cells ◽  
Oscillator Strengths ◽  
Solar Photovoltaic ◽  
Dft Methods ◽  
Radiative Transitions ◽  
Td Dft ◽  
Triplet Excited States

The molecular orbital energies and symmetries, electronic state energies and symmetries, and orbital compositions and oscillator strengths for one-photon radiative transitions up to an energy of 4 eV have been calculated by DFT and TD-DFT methods for 15 d0 and d10 metalloporphyrins. Data for both singlet and triplet excited states are reported and used to identify potential candidates for use as photon upconverters by homomolecular triplet–triplet annihilation.

Synthesis and photophysical properties of extended π conjugated naphthalimides

2017 ◽  
Vol 16 (4) ◽  
pp. 539-546 ◽  
Author(s):  
C. Rémy ◽  
C. Allain ◽  
I. Leray
Keyword(s):  
Charge Transfer ◽  
Dft Calculations ◽  
Photophysical Properties ◽  
Photoinduced Charge Transfer ◽  
Time Resolved ◽  
Time Resolved Spectroscopy ◽  
Td Dft ◽  
Photoinduced Charge

A series of π conjugated naphthalimide derivatives were prepared. Compounds display efficient photoinduced charge transfer in solution which was rationalized by time-resolved spectroscopy and modelled by TD-DFT calculations.

A DFT study of a new class of gold nanocluster-photochrome multi-functional switches

2014 ◽  
Vol 16 (47) ◽  
pp. 26240-26251 ◽  
Author(s):  
Arnaud Fihey ◽  
François Maurel ◽  
Aurélie Perrier
Keyword(s):  
Dft Calculations ◽  
Electronic Properties ◽  
Electron Energy ◽  
Dft Study ◽  
Gold Nanocluster ◽  
New Class ◽  
Energy Transfers ◽  
Td Dft ◽  
Structural And Electronic Properties ◽  
Photochromic Molecules

The structural and electronic properties of dithienylethene photochromic molecules grafted onto a Au25 nanocluster are reviewed and electron/energy transfers are discussed with the help of (TD-)DFT calculations.

Sign in / Sign up

Export Citation Format

Share Document