TY - JOUR
T1 - Intramolecular donor-acceptor systems. 5. Heavy atom effects on excited states of 6-N-arylamino-2-naphthalenesulfonate derivatives
AU - Kosower, Edward M.
AU - Dodiuk, Hanna
PY - 1978
Y1 - 1978
N2 - Heavy atoms substituted into the aryl group of 6-N-arylamino-2-naphthalenesulfonate (6,2-ANS) derivatives diminish the fluorescence quantum yield (φF) of the naphthalene-centered, S1,np → S0,np emission but do not affect φF from the charge-transfer state, the S1,ct → S0 emission. The low substituent sensitivities of fluorescence emission energies of 6,2-ANS derivatives in EPA glass at 77 K characterize them as S1,np → S0,np emissions. The phosphorescence quantum yield, φP, is augmented little and the phosphorescence lifetimes of 6,2-ANS derivatives are unaffected by such heavy atom substitutions except in the cases of 4-bromo derivatives.
AB - Heavy atoms substituted into the aryl group of 6-N-arylamino-2-naphthalenesulfonate (6,2-ANS) derivatives diminish the fluorescence quantum yield (φF) of the naphthalene-centered, S1,np → S0,np emission but do not affect φF from the charge-transfer state, the S1,ct → S0 emission. The low substituent sensitivities of fluorescence emission energies of 6,2-ANS derivatives in EPA glass at 77 K characterize them as S1,np → S0,np emissions. The phosphorescence quantum yield, φP, is augmented little and the phosphorescence lifetimes of 6,2-ANS derivatives are unaffected by such heavy atom substitutions except in the cases of 4-bromo derivatives.
UR - http://www.scopus.com/inward/record.url?scp=0001145263&partnerID=8YFLogxK
U2 - 10.1021/j100507a013
DO - 10.1021/j100507a013
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AN - SCOPUS:0001145263
SN - 0022-3654
VL - 82
SP - 2012
EP - 2015
JO - Journal of Physical Chemistry
JF - Journal of Physical Chemistry
IS - 18
ER -