Reduction of triplet C60 by hydrogen-bonded naphthols

Concerted electron and proton movement

Neeraj Gupta, Henry Linschitz, L. Biczók

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Hydrogen bonding equilibria, redox potentials and quenching of triplet C60 in naphthol solutions containing added pyridines are studied by absorption spectroscopy, nanosecond flash photolysis and cyclic-voltammetry. It is shown that the quenching reaction involves reduction of the triplet by a hydrogen bonded naphthol-pyridine pair, with formation of C60 , neutral naphthoxy radical and protonated base. Quenching rates increase with pyridine basicity, in parallel with decreased naphthol oxidation potential, and decrease with deuteration of the naphthol. It is concluded that electron and proton movement from the naphthol respectively to 3C60 and to base is concerted. Bulk radical yield increases with pyridine basicity and solvent polarity.

Original languageEnglish
Pages (from-to)343-353
Number of pages11
JournalFullerene Science and Technology
Volume5
Issue number2
Publication statusPublished - 1997

Fingerprint

Naphthols
Naphthol
Protons
Hydrogen
pyridines
Pyridine
protons
Electrons
quenching
hydrogen
Quenching
Alkalinity
electrons
Pyridines
Photolysis
flash
photolysis
polarity
absorption spectroscopy
Absorption spectroscopy

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Reduction of triplet C60 by hydrogen-bonded naphthols : Concerted electron and proton movement. / Gupta, Neeraj; Linschitz, Henry; Biczók, L.

In: Fullerene Science and Technology, Vol. 5, No. 2, 1997, p. 343-353.

Research output: Contribution to journalArticle

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