Abstract
The single-molecule fluorescence properties of the two perylenediimide dyes, 9-amino-N-(2,6-diisopropylphenyl)perylene-3,4-dicarboximide (API), and the derivative N,N-di(tert-butoxycarbonyl)-API (DAPI), are investigated in the amorphous host polystyrene at room temperature. For API, three spectroscopically different types of spectra can be distinguished, two of them can be assigned to the off-resonance and the in-resonance conformer of the amino group and the chromophore‘s π-electron system, repectively. The bathochromic third spectrum is suggested to originate also from an off-resonance conformer. In accordance with the sterically demanding substituents only off-resonance spectra are found for DAPI. Not being limited by the inhomogeneous spectral distribution, many molecules show clearly resolved vibronic structure and can be characterized by their spectral means, the vibronic maxima positions, and the vibronic band gaps. Sequences of consecutive spectra reveal different forms of dynamic behavior such as...
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
