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The Brightest Fullerene: A New Isotope Effect in Molecular Fluorescence and Phosphorescence
Author(s) -
Baleizão Carlos,
BerberanSantos Mário N.
Publication year - 2011
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201100156
Subject(s) - intersystem crossing , phosphorescence , photochemistry , fullerene , fluorescence , kinetic isotope effect , chemistry , isotope , chemical physics , excited state , physics , atomic physics , singlet state , organic chemistry , nuclear physics , deuterium , optics
The brightest one: Substitution of 12 C by 13 C in C 70 leads to major changes in its delayed fluorescence and phosphorescence properties (see graphs). This new isotope effect decreases the internal conversion and T 1 →S 0 intersystem crossing rates by a mass effect, and increases the S 1 ←T 1 intersystem crossing rate by a nuclear magnetic effect. It is also shown that 13 C 70 is by far the brightest fullerene known.