Spectroscopically tracking charge separation in polymer : fullerene blends with a three-phase morphology

2015 ◽  
Vol 8 (9) ◽  
pp. 2713-2724 ◽  
Author(s):  
Joseph K. Gallaher ◽  
Shyamal K. K. Prasad ◽  
Mohammad A. Uddin ◽  
Taehyo Kim ◽  
Jin Young Kim ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Charge Separation ◽  
Transient Absorption ◽  
Phase Morphology ◽  
Transient Absorption Spectroscopy ◽  
Superior Performance ◽  
Two Phase ◽  
Pure Polymer ◽  
Three Phase ◽  
Hole Migration

Transient absorption spectroscopy reveals that the superior performance of three-versus two-phase polymer : fullerene blends is associated with hole migration from intermixed to pure polymer phases.

scholarly journals Interfacial charge separation in Cu2O/RuOx as a visible light driven CO2 reduction catalyst

2014 ◽  
Vol 16 (13) ◽  
pp. 5922-5926 ◽  
Author(s):  
Ernest Pastor ◽  
Federico M. Pesci ◽  
Anna Reynal ◽  
Albertus D. Handoko ◽  
Mingjia Guo ◽  
...  
Keyword(s):  
Visible Light ◽  
Absorption Spectroscopy ◽  
Charge Separation ◽  
Transient Absorption ◽  
Co2 Reduction ◽  
Charge Carriers ◽  
Transient Absorption Spectroscopy ◽  
Visible Light Driven ◽  
Interfacial Charge

Transient absorption spectroscopy as a tool to monitor charge carriers in Cu2O–RuOx photocathodes for CO2 reduction.

scholarly journals Acid-triggering of light-induced charge-separation in hybrid organic/inorganic molecular photoactive dyads for harnessing solar energy

2021 ◽  
Author(s):  
Elisabetta Benazzi ◽  
Joshua Karlsson ◽  
Youssef Ben M'Barek ◽  
Pavel Chabera ◽  
Sébastien Blanchard ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Solar Energy ◽  
Absorption Spectroscopy ◽  
Charge Separation ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Induced Charge ◽  
Covalently Linked

H+ modulated charge-transfer in photoexcited covalently linked W and Mo Keggin-bodipy conjugates is demonstrated using transient absorption spectroscopy and photoluminescence. Adding acid switches on (W) or accelerates (Mo) charge separation.

Intramolecular electron transfer reactions in meso-(4-nitrophenyl)-substituted subporphyrins

2016 ◽  
Vol 52 (7) ◽  
pp. 1424-1427 ◽  
Author(s):  
Graeme Copley ◽  
Juwon Oh ◽  
Kota Yoshida ◽  
Daiki Shimizu ◽  
Dongho Kim ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Absorption Spectroscopy ◽  
Charge Separation ◽  
Transient Absorption ◽  
Charge Recombination ◽  
Transient Absorption Spectroscopy ◽  
Transfer Reactions ◽  
Intramolecular Electron Transfer ◽  
Time Resolved ◽  
Electron Transfer Reactions

A2B-type meso-(4-nitrophenyl)-substituted subporphyrins have been synthesized and shown to undergo very fast photoinduced intramolecular charge separation (CS) and charge recombination (CR) between the subporphyrin core and the meso-4-nitrophenyl group in CH2Cl2 as probed by femtosecond time-resolved transient absorption spectroscopy.

Catching metallic nitride endohedral fullerenes in organic and aqueous media

2016 ◽  
Vol 20 (08n11) ◽  
pp. 1025-1033 ◽  
Author(s):  
Volker Strauss ◽  
Shankara Gayathri Radhakrishnan ◽  
Jenny Malig ◽  
Norbert Jux ◽  
Dirk M. Guldi
Keyword(s):  
Steady State ◽  
Absorption Spectroscopy ◽  
Charge Separation ◽  
Transient Absorption ◽  
Aqueous Media ◽  
Transient Absorption Spectroscopy ◽  
Time Resolved ◽  
Endohedral Fullerenes ◽  
Multi Wavelength ◽  
Metallic Nitride

Two bis-tetraphenylporphyrin tweezers-like conjugates bearing different linkers have been characterized by means of electrochemical and photophysical methods. The thrust of this work was the complexation of these bis-porphyrins with C[Formula: see text] and metallic nitride endohedral fullerenes (MNEF) like Sc3N@C[Formula: see text] in organic and in aqueus media — studied by a combination of steady-state and time-resolved spectroscopies. In the context of charge separation evidence for the formation of the 1a[Formula: see text]-Sc3N@C[Formula: see text] and 1c[Formula: see text]-Sc3N@C[Formula: see text] charge separated states in organic and aqueous media, respectively, came from transient absorption spectroscopy. Multi-wavelength analyses afforded charge separated state lifetimes of around 400 ps.

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