Investigating Two-Photon-Induced Fluorescence in Rhodamine-6G in Presence of Cetyl-Trimethyl-Ammonium-Bromide

Sandeep Kumar Maurya; Dheerendra Yadav; Debabrata Goswami

doi:10.1007/s10895-016-1841-0

Investigating Two-Photon-Induced Fluorescence in Rhodamine-6G in Presence of Cetyl-Trimethyl-Ammonium-Bromide

J Fluoresc. 2016 Sep;26(5):1573-7. doi: 10.1007/s10895-016-1841-0. Epub 2016 Jun 20.

Authors

Sandeep Kumar Maurya¹, Dheerendra Yadav¹, Debabrata Goswami²

Affiliations

¹ Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India.
² Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India. dgoswami@iitk.ac.in.

PMID: 27324955
DOI: 10.1007/s10895-016-1841-0

Abstract

We investigate the effect of cetyl-trimethyl-ammonium-bromides (CTAB) concentration on the fluorescence of Rhodamine-6G in water. This spectroscopic study of Rhodamine-6G in presence of CTAB was performed using two-photon-induced-fluorescence at 780 nm wavelength using high repetition rate femtosecond laser pulses. We report an increment of ∼10 % in the fluorescence in accordance with ∼12 % enhancement in the absorption intensity of the dye molecule around the critical micellar concentration. We discuss the possible mechanism for the enhancement in the two-photon fluorescence intensity and the importance of critical micellar concentration.

Keywords: Cetyltrimethylammonium bromides (CTAB); Critical micelle concentration (CMC); Rhodamine 6G; Two photon induced fluorescence (TPIF).