Optical study of Xanthene type dyes in nano-confined liquid

نویسنده:
, , , , , ,
سال
: 2017
چکیده: The optical activity of dye molecules in different environments is of great interest for

many applications such as laser system or biological imaging. We investigate the

fluorescence and absorption spectrum of nano-confined Xanthene dyes (Rhodamine

B and Fluorescein sodium salt) in a two-phase liquid. Each shows very distinct optical

behavior in the water phase of a reverse microemulsion. Their optical properties such

as absorption and fluorescence for different dye and nanodroplets concentration are

investigated. We show that for the same concentration of dye in the microemulsion the

peak of fluorescence intensity is varied by altering the concentration of nanodroplets.

However, the trend of the change is widely different depending on the hydrophobicity

of dyes. Quantum–mechanical second order perturbation theory is used to calculate

the ratio of dipole moments in the ground and exacted states, which accounts for

Stokes shift of fluorescence peak. Photon correlation spectroscopy is employed to

check the trace of dye in the oil phase of the microemulsion
کلیدواژه(گان): Fluorescnce,Absorption,Spectroscopy,Dyes,Microemulsion,Encapsulation
کالکشن :
  • نمایش متادیتا
  • آمار بازدید