Synthesis, crystal structure and saturable absorption in the near-IR regions of a new copper complex of dmit: hexadecyltrimethylammonium bis(2-thioxo-1,3-dithiole-4,5-dithiolato)-copper

Abstract

A new copper complex of dmit, hexadecyltrimethylammonium bis(2-thioxo-1,3-dithiole-4,5-dithiolato)-copper([C₁₆H₃₃(CH₃)₃N][Cu(dmit)₂], abbreviated as CTCU, C₁₆H₃₃(CH₃)₃N = hexadecyltrimethylammonium, dmit = 2-thioxo-1,3-dithiole-4,5-dithiolate) has been synthesized and its structure determined by X-ray diffraction. The saturable absorption of CTCU at 1053 nm shows promise as a Q-switch dye in the near IR regions.

Keywords:

• Saturable absorption
• Copper-dmit salt
• Q-switching
• Crystal structure

Acknowledgements

This work is supported by a grant from the High Technology Development Project of China (No. 2002AA313070) and the Natural Science Foundation of China (Nos 60476020, 60377016 and 50272037).