Supramolecular Triads Formed by Axial Coordination of Fullerene to Covalently Linked Zinc Porphyrin−Ferrocene(s):  Design, Syntheses, Electrochemistry, and Photochemistry

2004 ◽  
Vol 108 (31) ◽  
pp. 11333-11343 ◽  
Author(s):  
Francis D'Souza ◽  
Phillip M. Smith ◽  
Suresh Gadde ◽  
Amy L. McCarty ◽  
Michael J. Kullman ◽  
...  
Keyword(s):  
Zinc Porphyrin ◽  
Axial Coordination ◽  
Covalently Linked

Redox Active Two-Component Films of Palladium and Covalently Linked Zinc Porphyrin–Fullerene Dyad

2006 ◽  
Vol 18 (9) ◽  
pp. 841-848 ◽  
Author(s):  
Marta Plonska ◽  
Krzysztof Winkler ◽  
Suresh Gadde ◽  
Francis D'Souza ◽  
Alan L. Balch
Keyword(s):  
Zinc Porphyrin ◽  
Redox Active ◽  
Two Component ◽  
Covalently Linked

Charge Transfer and Spin Dynamics in a Zinc Porphyrin Donor Covalently Linked to One or Two Naphthalenediimide Acceptors

2021 ◽  
Vol 125 (3) ◽  
pp. 825-834
Author(s):  
Laura Bancroft ◽  
Jinyuan Zhang ◽  
Samantha M. Harvey ◽  
Matthew D. Krzyaniak ◽  
Peng Zhang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Spin Dynamics ◽  
Zinc Porphyrin ◽  
Covalently Linked

Controlling electron and energy transfer paths by selective excitation in a zinc porphyrin–BODIPY–C60 multi-modular triad

Nanoscale ◽  
2017 ◽  
Vol 9 (45) ◽  
pp. 18054-18065 ◽  
Author(s):  
Christopher O. Obondi ◽  
Gary N. Lim ◽  
Priscilla Martinez ◽  
Varghese Swamy ◽  
Francis D'Souza
Keyword(s):  
Energy Transfer ◽  
Selective Excitation ◽  
Spectroscopic Techniques ◽  
Zinc Porphyrin ◽  
Covalently Linked

The significance of selective excitation in triggering the photochemical events in a newly synthesized covalently linked supramolecular triad is demonstrated using ultrafast spectroscopic techniques.

The Visible Spectra and Electronic Effects in Axial Coordination Reaction of Zinc Porphyrin Complexes

1997 ◽  
Vol 13 (07) ◽  
pp. 603-611
Author(s):  
Ruan Wen-Juan ◽  
◽  
Zhu Zhi-Ang ◽  
Chen Hong-Wei ◽  
Bu Xian-He ◽  
...  
Keyword(s):  
Electronic Effects ◽  
Zinc Porphyrin ◽  
Axial Coordination ◽  
Visible Spectra ◽  
Coordination Reaction

DABCO-Directed Self-Assembly of Pyrene-Centered Porphyrin Pentamers

2013 ◽  
Vol 575-576 ◽  
pp. 123-129
Author(s):  
Zhuang Dong Yuan ◽  
Jing Xia Wang ◽  
Ning Sheng
Keyword(s):  
Self Assembly ◽  
Fluorescence Emission ◽  
The Self ◽  
Spectroscopic Methods ◽  
Assembly Process ◽  
Zinc Porphyrin ◽  
Axial Coordination ◽  
H Nmr ◽  
Wide Range ◽  
Nmr Techniques

DABCO (1, 4-diazabicyclo [2.2.2] octane) has been used in combination with pentameric zinc porphyrin-pyrene array 1 to form well-defined supramolecular arrays through axial coordination. The self-assembly process has been investigated by a wide range of spectroscopic methods including UV-vis, fluorescence emission and 1H NMR techniques.

Spectroscopic, Electrochemical, and Photochemical Studies of Self-Assembled via Axial Coordination Zinc Porphyrin−Fulleropyrrolidine Dyads†

2002 ◽  
Vol 106 (13) ◽  
pp. 3243-3252 ◽  
Author(s):  
Francis D'Souza ◽  
Gollapalli R. Deviprasad ◽  
Melvin E. Zandler ◽  
Vu T. Hoang ◽  
Arkady Klykov ◽  
...  
Keyword(s):  
Zinc Porphyrin ◽  
Axial Coordination ◽  
Self Assembled

Charge separation in supramolecular ferrocene(s)-zinc porphyrin-fullerene triads: A femtosecond transient absorption study

2015 ◽  
Vol 19 (01-03) ◽  
pp. 270-280 ◽  
Author(s):  
Gary N. Lim ◽  
Whitney A. Webre ◽  
Francis D'Souza
Keyword(s):  
Charge Separation ◽  
Transient Absorption ◽  
Time Window ◽  
Ion Pairs ◽  
Ion Pair ◽  
Zinc Porphyrin ◽  
Femtosecond Transient Absorption ◽  
Photoinduced Charge Separation ◽  
Electron Migration ◽  
Covalently Linked

Mechanistic aspects of photoinduced charge separation in supramolecular triads, constructed using covalently linked zinc porphyrin-ferrocene(s) dyads — self-assembled via axial coordination to either pyridine or phenylimidazole appended fulleropyrrolidine ( Fc x- ZnP : PyC 60 or Fc x- ZnP : ImC 60; x = 1 or 2), has been investigated using femtosecond pump-probe transient spectroscopy. Upon photoexcitation of ZnP , charge separation from ferrocene to 1 ZnP * to yield the initial Fc +- ZnP •-: C 60 radical ion-pair or charge separation from 1 ZnP * to C 60 to yield the initial Fc - ZnP •+: C 60•- radical ion-pair, depending upon the ferrocene-zinc porphyrin intermolecular distance, was observed. These radical ion-pairs resulted in the formation of ultimate distantly separated Fc +- ZnP : C 60•- radical ion-pairs either via an electron migration (former case) or hole shift (latter case) process. Kinetics of charge separation as a function of spacer connecting the ferrocene and porphyrin, and spacer between the porphyrin and fullerene is reported. In agreement with our earlier study (J. Phys. Chem. B 2004; 108: 11333–11343), the Fc +- ZnP : C 60•- radical ion-pair persisted beyond the monitoring time window of our instrument, suggesting charge stabilization in these supramolecular triads.

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