Self-assembly via 'two-point' binding of a zinc porphyrin dimer to a bis pyridine functionalized fullerene: Singlet emission studies

Francis D'Souza; Suresh Gadde; Melvin E. Zandler; Mitsunari Itou; Yasuyuki Araki; Osamu Ito

Self-assembly via 'two-point' binding of a zinc porphyrin dimer to a bis pyridine functionalized fullerene: Singlet emission studies

Francis D'Souza, Suresh Gadde, Melvin E. Zandler, Mitsunari Itou, Yasuyuki Araki, Osamu Ito

IMRAM - Division of Organic- and Biomaterials Research

Research output: Contribution to conference › Paper › peer-review

Abstract

A stable, self-assembled supramolecular triad was assembled via a 'two-point' axial ligand coordination approach using a covalently linked zinc porphyrin dimer and fulleropyrrolidine functionalized with two pyridine entities. The geometry and electronic structure of the triad was established from spectroscopic and ab initio B3LYP/3-21G(*) calculations. Preliminary steady-state and time-resolved fluorescence studies revealed efficient quenching suggesting the occurrence of light induced electron transfer from singlet excited zinc porphyrin dimer to the axially bound fullerene moiety.

Original language	English
Pages	46-50
Number of pages	5
Publication status	Published - 2004
Event	ECS Annual Spring Meeting -Fullerenes and Nanotubes: Materials for the New Chemical Frontier - International Symposium on Fullerenes, Nanotubes, and Carbon Nanoclusters - San Antonio, TX, United States Duration: 2004 May 9 → 2004 May 13

Conference

Conference	ECS Annual Spring Meeting -Fullerenes and Nanotubes: Materials for the New Chemical Frontier - International Symposium on Fullerenes, Nanotubes, and Carbon Nanoclusters
Country/Territory	United States
City	San Antonio, TX
Period	04/5/9 → 04/5/13

Keywords

Axial ligation
Charge separation
Photoinduced electron transfer
Quantum yield
Supramolecular porphyrin-fullerene conjugate

Cite this

D'Souza, F., Gadde, S., Zandler, M. E., Itou, M., Araki, Y., & Ito, O. (2004). Self-assembly via 'two-point' binding of a zinc porphyrin dimer to a bis pyridine functionalized fullerene: Singlet emission studies. 46-50. Paper presented at ECS Annual Spring Meeting -Fullerenes and Nanotubes: Materials for the New Chemical Frontier - International Symposium on Fullerenes, Nanotubes, and Carbon Nanoclusters, San Antonio, TX, United States.

D'Souza, Francis ; Gadde, Suresh ; Zandler, Melvin E. et al. / Self-assembly via 'two-point' binding of a zinc porphyrin dimer to a bis pyridine functionalized fullerene : Singlet emission studies. Paper presented at ECS Annual Spring Meeting -Fullerenes and Nanotubes: Materials for the New Chemical Frontier - International Symposium on Fullerenes, Nanotubes, and Carbon Nanoclusters, San Antonio, TX, United States.5 p.

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abstract = "A stable, self-assembled supramolecular triad was assembled via a 'two-point' axial ligand coordination approach using a covalently linked zinc porphyrin dimer and fulleropyrrolidine functionalized with two pyridine entities. The geometry and electronic structure of the triad was established from spectroscopic and ab initio B3LYP/3-21G(*) calculations. Preliminary steady-state and time-resolved fluorescence studies revealed efficient quenching suggesting the occurrence of light induced electron transfer from singlet excited zinc porphyrin dimer to the axially bound fullerene moiety.",

keywords = "Axial ligation, Charge separation, Photoinduced electron transfer, Quantum yield, Supramolecular porphyrin-fullerene conjugate",

author = "Francis D'Souza and Suresh Gadde and Zandler, {Melvin E.} and Mitsunari Itou and Yasuyuki Araki and Osamu Ito",

year = "2004",

language = "English",

pages = "46--50",

note = "ECS Annual Spring Meeting -Fullerenes and Nanotubes: Materials for the New Chemical Frontier - International Symposium on Fullerenes, Nanotubes, and Carbon Nanoclusters ; Conference date: 09-05-2004 Through 13-05-2004",

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D'Souza, F, Gadde, S, Zandler, ME, Itou, M, Araki, Y & Ito, O 2004, 'Self-assembly via 'two-point' binding of a zinc porphyrin dimer to a bis pyridine functionalized fullerene: Singlet emission studies', Paper presented at ECS Annual Spring Meeting -Fullerenes and Nanotubes: Materials for the New Chemical Frontier - International Symposium on Fullerenes, Nanotubes, and Carbon Nanoclusters, San Antonio, TX, United States, 04/5/9 - 04/5/13 pp. 46-50.

Self-assembly via 'two-point' binding of a zinc porphyrin dimer to a bis pyridine functionalized fullerene: Singlet emission studies. / D'Souza, Francis; Gadde, Suresh; Zandler, Melvin E. et al.
2004. 46-50 Paper presented at ECS Annual Spring Meeting -Fullerenes and Nanotubes: Materials for the New Chemical Frontier - International Symposium on Fullerenes, Nanotubes, and Carbon Nanoclusters, San Antonio, TX, United States.

Research output: Contribution to conference › Paper › peer-review

TY - CONF

T1 - Self-assembly via 'two-point' binding of a zinc porphyrin dimer to a bis pyridine functionalized fullerene

T2 - ECS Annual Spring Meeting -Fullerenes and Nanotubes: Materials for the New Chemical Frontier - International Symposium on Fullerenes, Nanotubes, and Carbon Nanoclusters

AU - D'Souza, Francis

AU - Gadde, Suresh

AU - Zandler, Melvin E.

AU - Itou, Mitsunari

AU - Araki, Yasuyuki

AU - Ito, Osamu

PY - 2004

Y1 - 2004

N2 - A stable, self-assembled supramolecular triad was assembled via a 'two-point' axial ligand coordination approach using a covalently linked zinc porphyrin dimer and fulleropyrrolidine functionalized with two pyridine entities. The geometry and electronic structure of the triad was established from spectroscopic and ab initio B3LYP/3-21G(*) calculations. Preliminary steady-state and time-resolved fluorescence studies revealed efficient quenching suggesting the occurrence of light induced electron transfer from singlet excited zinc porphyrin dimer to the axially bound fullerene moiety.

AB - A stable, self-assembled supramolecular triad was assembled via a 'two-point' axial ligand coordination approach using a covalently linked zinc porphyrin dimer and fulleropyrrolidine functionalized with two pyridine entities. The geometry and electronic structure of the triad was established from spectroscopic and ab initio B3LYP/3-21G(*) calculations. Preliminary steady-state and time-resolved fluorescence studies revealed efficient quenching suggesting the occurrence of light induced electron transfer from singlet excited zinc porphyrin dimer to the axially bound fullerene moiety.

KW - Axial ligation

KW - Charge separation

KW - Photoinduced electron transfer

KW - Quantum yield

KW - Supramolecular porphyrin-fullerene conjugate

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D'Souza F, Gadde S, Zandler ME, Itou M, Araki Y, Ito O. Self-assembly via 'two-point' binding of a zinc porphyrin dimer to a bis pyridine functionalized fullerene: Singlet emission studies. 2004. Paper presented at ECS Annual Spring Meeting -Fullerenes and Nanotubes: Materials for the New Chemical Frontier - International Symposium on Fullerenes, Nanotubes, and Carbon Nanoclusters, San Antonio, TX, United States.

Self-assembly via 'two-point' binding of a zinc porphyrin dimer to a bis pyridine functionalized fullerene: Singlet emission studies

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