scholarly journals Photophysical Behavior and Sensing Response of Chalcone Containing Pyrene moiety

2021 ◽  
Vol 42 (2) ◽  
pp. 151-161
Author(s):  
Marwa N. El-Nahass ◽  
Tarek A. Fayed ◽  
Saleh Abd Elazim ◽  
Doaa F. Draz ◽  
Fathy Hassan
Keyword(s):  
Photophysical Behavior

scholarly journals Aromaticity and photophysics of tetrasila- and tetragerma-annelated tetrathienylenes as new representatives of the hetero[8]circulene family

2019 ◽  
Vol 21 (18) ◽  
pp. 9246-9254 ◽  
Author(s):  
G. V. Baryshnikov ◽  
R. R. Valiev ◽  
V. N. Cherepanov ◽  
N. N. Karaush-Karmazin ◽  
V. A. Minaeva ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Emission Spectra ◽  
Absorption And Emission ◽  
Absorption And Emission Spectra ◽  
Photophysical Behavior

The electronic structure, absorption and emission spectra, aromaticity and photophysical behavior of the recently synthesized tetrasilatetrathia[8]circulene and tetragermatetrathia[8]circulene compounds have been studied computationally.

Luminescent Ruthenium(II) Bipyridyl−Phosphonic Acid Complexes:  pH Dependent Photophysical Behavior and Quenching with Divalent Metal Ions

2000 ◽  
Vol 39 (1) ◽  
pp. 76-84 ◽  
Author(s):  
Marco Montalti ◽  
Seema Wadhwa ◽  
Won Y. Kim ◽  
Rachael A. Kipp ◽  
Russell H. Schmehl
Keyword(s):  
Metal Ions ◽  
Phosphonic Acid ◽  
Divalent Metal ◽  
Divalent Metal Ions ◽  
Photophysical Behavior ◽  
Ph Dependent

IMPROVEMENT OF THE PHOTOPHYSICAL PARAMETERS OF ZINC OCTACARBOXY PHTHALOCYANINE UPON CONJUGATION TO MAGNETIC NANOPARTICLES

2013 ◽  
Vol 12 (02) ◽  
pp. 1350010 ◽  
Author(s):  
PHILLIMON MODISHA ◽  
EDITH ANTUNES ◽  
JOHN MACK ◽  
TEBELLO NYOKONG
Keyword(s):  
Magnetic Nanoparticles ◽  
Quantum Yield ◽  
Singlet Oxygen ◽  
Amide Bond ◽  
Amino Group ◽  
Covalent Linkage ◽  
Transmission Electron ◽  
Photophysical Parameters ◽  
Photophysical Behavior ◽  
Triplet Lifetime

Magnetic nanoparticles (MNPs) comprising magnetite (Fe3O4) were functionalized with 3-aminopropyl-triethoxysilane forming amino functionalized magnetite nanoparticles (AMNPs). The amino group allows for conjugation with zinc octacarboxyphthalocyanine ( ZnOCPc ) via the carboxyl group to form an amide bond. Transmission electron microscopy showed a change in morphology after conjugation. The covalent linkage of AMNPs to ZnOCPc has shown improvements in the photophysical behavior of the Pc in the presence of the MNP, increasing the triplet quantum yield (ΦT), singlet oxygen quantum yield (ΦΔ), triplet lifetime (τT) and singlet oxygen lifetime (τΔ) of the ZnOCPc and thus improving the efficiency of the ZnOCPc as a photosensitizer.

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