The Journal of Organic Chemistry

Synthesis and characterization of some pyridinium N-phenoxide betaine dyes for second-harmonic generation

MS Paley, JM Harris

Index: Paley, M. Steven; Harris, J. Milton Journal of Organic Chemistry, 1991 , vol. 56, # 18 p. 568 - 574

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Citation Number: 51

Abstract

The synthesis end characterization of some pyridinium-N-phenoxide betaine dyes (including Reichardt's dye) for second-harmonic generation (SHG) is described. These dyes are highly solvatochromic, which indicates that they can have large second-order molecular polarizabilities. The effects of substituents on the solvatochromic and optical properties of the betaines are investigated. Also the crystal structure of the betaines is discussed and ...