Intramolecular energy transfer and photoisomerization in stilbene dendrimers

2017 ◽  
Vol 95 (9) ◽  
pp. 1013-1023 ◽  
Author(s):  
Masahiro Taima ◽  
Yuka Ishida ◽  
Tatsuo Arai
Keyword(s):  
Energy Transfer ◽  
Energy Harvesting ◽  
Photophysical Properties ◽  
Intersystem Crossing ◽  
Intramolecular Energy Transfer ◽  
The Core ◽  
Transfer Processes ◽  
Trans Isomerization ◽  
Photophysical Processes ◽  
In Cis

Stilbene dendrimers with energy harvesting chromophores, such as naphthalene and benzophenone, have been prepared and their photochemical and photophysical properties have been examined. These dendrimers underwent trans–cis mutual photoisomerization on excitation of the core stilbene or the peripheral naphthalene and benzophenone chromophores through several energy transfer processes, and photophysical processes such as intersystem crossing finally resulted in cis-trans isomerization of the core stilbene.

Synthesis, electrochemistry, spectroscopy and photophysical properties of a series of meso-phenylpyridylporphyrins with one to four pyridyl rings coordinated to [Ru(bipy)2Cl]+ groups

2002 ◽  
Vol 06 (01) ◽  
pp. 33-42 ◽  
Author(s):  
Fábio M. Engelmann ◽  
Pellegrino Losco ◽  
Herbert Winnischofer ◽  
Koiti Araki ◽  
Henrique E. Toma
Keyword(s):  
Energy Transfer ◽  
Quantum Yield ◽  
Electrochemical Behavior ◽  
Fluorescence Quantum Yield ◽  
Photophysical Properties ◽  
Intramolecular Energy Transfer ◽  
Porphyrin Ring ◽  
Transfer Processes ◽  
Redox Pair ◽  
Mlct State

A series of meso-phenylpyridylporphyrins and their respective supermolecular species obtained by the coordination of [ Ru ( bipy )2 Cl ]+ groups to the pyridyl substituents was synthesized and characterized. Their spectroscopic and electrochemical behavior were similar to that observed for the meso-tetra(4-pyridyl)porphyrin derivative, but the redox potential of the Ru (III/II) redox pair was about 70 mV more negative. The porphyrin centered fluorescence quantum yield exhibited a linear decrease as a function of the number of pyridyl substituents on the porphyrin ring. Efficient intramolecular energy transfer processes from the 3 MLCT state of the ruthenium complexes to the porphyrin center were observed at 77K in ethanol glass.

Intramolecular Energy Transfer Processes in Binuclear Re−Os Complexes

2001 ◽  
Vol 40 (27) ◽  
pp. 6885-6891 ◽  
Author(s):  
R. Argazzi ◽  
E. Bertolasi ◽  
C. Chiorboli ◽  
C. A. Bignozzi ◽  
M. K. Itokazu ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Intramolecular Energy Transfer ◽  
Transfer Processes

Bodipy-squaraine triads: Preparation and study of the intramolecular energy transfer, charge separation and intersystem crossing

2017 ◽  
Vol 147 ◽  
pp. 560-572 ◽  
Author(s):  
Yu Dong ◽  
Alessandro Iagatti ◽  
Paolo Foggi ◽  
Jianzhang Zhao ◽  
Gloria Mazzone ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Charge Separation ◽  
Intersystem Crossing ◽  
Intramolecular Energy Transfer

DiiodoBodipy-Rhodamine Dyads: Preparation and Study of the Acid-Activatable Competing Intersystem Crossing and Energy Transfer Processes

2015 ◽  
Vol 119 (11) ◽  
pp. 4175-4187 ◽  
Author(s):  
Kejing Xu ◽  
Yun Xie ◽  
Xiaoneng Cui ◽  
Jianzhang Zhao ◽  
Ksenija D. Glusac
Keyword(s):  
Energy Transfer ◽  
Intersystem Crossing ◽  
Transfer Processes
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