Design, Synthesis and Optical Property of Rhodamine 6G Based New Dye Sensor

Abstract

Rhodamine dyes have been attracted to many researchers due to its excellent photophysical properties. Interesting one of these dyes is rhodamine 6G. In this study, we have designed and synthesized a strong yellowish-green fluorescent emission dye sensor based rhodamine 6G for the detection of Hg²⁺ ions. It has noticeable properties of application for detecting and recognizing the presence of Hg²⁺ ions. In this regard, the optical properties of this dye sensor were intensively investigated using UV-Vis absorption, fluorescent spectrophotometer. Formation type of metal binding complex for this dye sensor was also determined by Job's plot method. Finally, computational calculation was simulated and calculated to approach for HOMO/LUMO of this dye sensor.

Keywords:

• Rhodamine 6G
• Dye sensor
• Optical property
• Fluorescent
• Heavy metal ions
• Job's plot method
• HOMO/LUMO

Acknowledgments

This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (No. 20110022326). This research was supported by a grant from the Fundamental R&D Program for Core Technology funded by the Ministry of Knowledge Economy, Republic of Korea.

Notes

^†These two authors made equal contributions to this work.