TY - JOUR
T1 - The importance of hydrogen bonded clusters in the stabilization of the intramolecular charge transfer state of 4,4'-diaminophenyl sulphone in alcohols and alcohol:acetonitrile mixtures
AU - Su, Shyh Gang
AU - Simon, John D.
N1 - Funding Information:
The authors are grateful for support from the NationalS cienceF oundationW. e arei ndebtedto Dr. Al Crossw hog raciouslyp rovidedh is dataf ittinga nd plottingr outines.W e alsot hankP rofessorD avid R. Kearns for use of his fluorimetera nd Professor Murray Goodmanf or useo f the FI IR.
PY - 1986/12/19
Y1 - 1986/12/19
N2 - The formation of the twisted intramolecular charge transfer (TICT) state of 4,4'-diaminophenyl sulphone (APS) has been examined in hexanol/acetonitrile mixtures. The TICT emission reveals wavelength dependent rise times which are sensitive to the alcohol concentration. Discernible wavelength-dependent rise times are observed for hexanol:acetonitrile mixtures above 1:2. Examination of the infrared O-H stretch for these solutions shows that above this ratio, hydrogen-bonded aggregates are formed. In addition, the emission dynamics of APS in neat hexanol are compared with those observed for 4,4'-dimethylaminophenyl sulphone (DMAPS) and 3,3'-diaminophenylsulphone (3,3'-APS).
AB - The formation of the twisted intramolecular charge transfer (TICT) state of 4,4'-diaminophenyl sulphone (APS) has been examined in hexanol/acetonitrile mixtures. The TICT emission reveals wavelength dependent rise times which are sensitive to the alcohol concentration. Discernible wavelength-dependent rise times are observed for hexanol:acetonitrile mixtures above 1:2. Examination of the infrared O-H stretch for these solutions shows that above this ratio, hydrogen-bonded aggregates are formed. In addition, the emission dynamics of APS in neat hexanol are compared with those observed for 4,4'-dimethylaminophenyl sulphone (DMAPS) and 3,3'-diaminophenylsulphone (3,3'-APS).
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U2 - 10.1016/0009-2614(86)80623-6
DO - 10.1016/0009-2614(86)80623-6
M3 - Article
AN - SCOPUS:26444604721
VL - 132
SP - 345
EP - 350
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 4-5
ER -