Nonlinear optical properties of novel carborane–ferrocene conjugated dyads. Electron-withdrawing characteristics of carboranes

Abstract

The novel carborane–ferrocene conjugated dyads 1–3 and 6–8 were synthesized and their NLO properties were investigated. ortho-, meta-, and para-carboranes act as electron-withdrawing groups, and the para-carborane dyads 3 and 8 exhibited higher β values (hyperpolarizability) than the ortho- and meta-carborane analogues 1, 2, 6, 7.