TY - JOUR
T1 - Two-photon excitation of dioxane
T2 - Time-resolved measurements of excited state complex formation with water
AU - Lakowicz, Joseph R.
AU - Gryczynski, Ignacy
AU - Nowaczyk, Kazmierz
N1 - Funding Information:
This work was supported by grants from the National Institutes of Health (RR-10416) and the National Center for Research Resources (RR-08119). The authors thank Dr A. Razynska for dioxane purification.
PY - 1997/9
Y1 - 1997/9
N2 - We observed emission from the non-aromatic hydrocarbon 1,4-dioxane upon illumination with ps pulses at 380 nm. The emission intensity depended quadratically on incident power at 380 nm, indicating a two-photon process. In the absence of water the intensity decay was close to a single exponential, but displayed some evidence of an excited state process. In the presence of 1% water the emission spectra shifted dramatically to long wavelength. Water also resulted in wavelength-dependent intensity decays with negative pre-exponential factors on the long wavelength side of the emission, demonstrating the presence of an excited state reaction. At this water concentration the results are consistent with a two-state model due to emission from dioxane and a dioxane-water complex.
AB - We observed emission from the non-aromatic hydrocarbon 1,4-dioxane upon illumination with ps pulses at 380 nm. The emission intensity depended quadratically on incident power at 380 nm, indicating a two-photon process. In the absence of water the intensity decay was close to a single exponential, but displayed some evidence of an excited state process. In the presence of 1% water the emission spectra shifted dramatically to long wavelength. Water also resulted in wavelength-dependent intensity decays with negative pre-exponential factors on the long wavelength side of the emission, demonstrating the presence of an excited state reaction. At this water concentration the results are consistent with a two-state model due to emission from dioxane and a dioxane-water complex.
KW - Alkane fluorescence
KW - Exciplex
KW - Fluorescence
KW - Time-resolved fluorescence
KW - Two-photon excitation
UR - http://www.scopus.com/inward/record.url?scp=0031218733&partnerID=8YFLogxK
U2 - 10.1016/S1386-1425(97)00095-4
DO - 10.1016/S1386-1425(97)00095-4
M3 - Article
C2 - 9358653
AN - SCOPUS:0031218733
SN - 1386-1425
VL - 53
SP - 1637
EP - 1644
JO - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
JF - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
IS - 10
ER -