scholarly journals An Improved Version of Photon-Counting Streak Camera and Its Application to Time-Resolved Fluorescence Spectrophotometer.

1994 ◽  
Vol 43 (3) ◽  
pp. 164-170
Author(s):  
Seiji AKIMOTO ◽  
Yoshinobu NISHIMURA ◽  
Iwao YAMAZAKI ◽  
Motoyuki WATANABE ◽  
Musubu KOISHI
1991 ◽  
Vol 40 (3) ◽  
pp. 155-162
Author(s):  
Yoshinobu NISHIMURA ◽  
Tomoko YAMAZAKI ◽  
Iwao YAMAZAKI ◽  
Motoyuki WATANABE ◽  
Musubu KOISHI

Four methods of applying mode-locked lasers to time-resolved fluorescence measurements in the subnanosecond region are compared. When time resolution below 100 ps is not required, the most precise and sensitive method is single-photon counting, and the application of this method to studies of time-resolved fluorescence of tryptophan in simple peptides is described. The dependence of lifetimes on pH and temperature are interpreted in terms of quenching by intramolecular proton and electron transfers.


1977 ◽  
Vol 30 (11) ◽  
pp. 2353 ◽  
Author(s):  
GR Fleming ◽  
DP Millar ◽  
GC Morris ◽  
JM Morris ◽  
GW Robinson

The time-resolved fluorescence of tetracene crystals excited by a single 7-ps pulse of 530-nm light has been measured with a streak camera/OMA system. The singlet exciton lifetime was found to be 300�30 ps at 293 K. Singlet-singlet exciton annihilation was observed, and the rate constant found to be 5 x 10-9 cm3 s-1. In order to fit the observed decay curves, an upper limit of c. 1 x 10-9 cm3 s-1 must be set on the singlet-triplet exciton annihilation rate. The measured singlet-singlet exciton annihilation rate is consistent with a hopping model for singlet exciton motion at room temperature.


1996 ◽  
Vol 24 (5) ◽  
pp. 609-614
Author(s):  
Seiji AKIMOTO ◽  
Akira TAKAHASHI ◽  
Katsuyuki KINOSHITA ◽  
Motoyuki WATANABE ◽  
Musubu KOISHI ◽  
...  

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