scholarly journals Synthesis, regioselective aerobic Pd(ii)-catalyzed C–H bond alkenylation and the photophysical properties of pyrenylphenylpyrazoles

2016 ◽  
Vol 15 (4) ◽  
pp. 580-588 ◽  
Author(s):  
Rafał Flamholc ◽  
Janusz Zakrzewski ◽  
Anna Makal ◽  
Arnaud Brosseau ◽  
Rémi Métivier
Keyword(s):  
Charge Transfer ◽  
Excited States ◽  
Intramolecular Charge Transfer ◽  
Photophysical Properties ◽  
Dual Emission ◽  
Locally Excited

Pd(ii)-catalyzed C–H alkenylation of a pyrenylphenylpyrazole afforded fluorophore exhibiting solvent-dependent dual emission, resulting from locally-excited (LE) and intramolecular charge transfer (ICT) excited states.

Synthesis of fused chalcogenophenocarbazoles: towards dual emission resulting from hybridized local and charge-transfer states

2020 ◽  
Vol 44 (10) ◽  
pp. 3903-3911 ◽  
Author(s):  
Alla Petrenko ◽  
Oleksandr Bezvikonnyi ◽  
Dmytro Volyniuk ◽  
Yan Danyliv ◽  
Jurate Simokaitiene ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Dual Emission ◽  
Locally Excited

Fused chalcogenophenocarbazoles exhibit fluorescence resulting from recombination of either locally excited, intramolecular charge-transfer or hybridized local and charge-transfer (HLCT) states.

scholarly journals Intramolecular charge transfer in aminobenzonitriles and tetrafluoro counterparts: fluorescence explained by competition between low-lying excited states and radiationless deactivation. Part I: A mechanistic overview of the parent system ABN

2016 ◽  
Vol 18 (9) ◽  
pp. 6861-6874 ◽  
Author(s):  
Mireia Segado ◽  
Isabel Gómez ◽  
Mar Reguero
Keyword(s):  
Charge Transfer ◽  
Excited States ◽  
Intramolecular Charge Transfer ◽  
Fluorescence Pattern ◽  
Locally Excited

The simplicity of the fluorescence pattern of ABN is in fact the outcome of an intricate interplay between locally excited and charge transfer excited states.

On the photophysics of butadiyne bridged pyrene–phenyl molecular conjugates: multiple emissive pathways through locally excited, intramolecular charge transfer and excimer states

2015 ◽  
Vol 177 ◽  
pp. 213-235 ◽  
Author(s):  
Avik Kumar Pati ◽  
Santosh J. Gharpure ◽  
Ashok K. Mishra
Keyword(s):  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Photophysical Properties ◽  
Phenyl Group ◽  
Structure Property ◽  
Aggregate State ◽  
Locally Excited ◽  
Acceptor Group ◽  
Donor And Acceptor ◽  
Wide Range

The present work describes the photophysical properties of a group of butadiyne bridged pyrene–phenyl molecular hybrids having different substitutions with varying donor and acceptor abilities. In addition to emission from the locally excited (LE) state originating from the pyrene moiety, intramolecular charge transfer (ICT) emissions were observed in molecules with donor–acceptor character. The positions of the ICT emission maxima varied over a wide range of wavelengths (475–600 nm). Pyrene behaved as a donor when a strong acceptor group (–CN) was attached to the phenyl ring and it behaved as an acceptor when the phenyl group contained a strong donor group (–NMe2). In mixed aqueous solvents at higher percentages of water (80–99%), the derivatives showed emissions from the aggregate state in addition to the LE and ICT states. Emissions from the aggregate states of the derivatives were centred in the range 510–560 nm. The aggregate state emissions were found to originate from static excimers involving pyrene moieties. A detailed structure–property relationship of the butadiynyl derivatives was revealed in this study.

Carba-closo-dodecaboranylethynyl ligands facilitating luminescent reversed charge-transfer excited states in gold/silver complexes

2019 ◽  
Vol 55 (63) ◽  
pp. 9351-9354 ◽  
Author(s):  
Michael Hailmann ◽  
Benjamin Hupp ◽  
Alexander Himmelspach ◽  
Fabian Keppner ◽  
Philipp T. Hennig ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Excited States ◽  
Photophysical Properties ◽  
Silver Complexes ◽  
Boron Cluster ◽  
Gold Silver

Homo- and heterometallic gold(i) and silver(i) complexes with the carba-closo-dodecaboranylethynyl ligand were obtained and the participation of the boron cluster to the photophysical properties was proven.

scholarly journals Addressing Charge‐Transfer and Locally‐Excited States in a Twisted Biphenyl Push‐Pull Chromophore

ChemPhysChem ◽  
2019 ◽  
Vol 20 (21) ◽  
pp. 2860-2873 ◽  
Author(s):  
Elisa Campioli ◽  
Somananda Sanyal ◽  
Agnese Marcelli ◽  
Mariangela Di Donato ◽  
Mireille Blanchard‐Desce ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Excited States ◽  
Locally Excited
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