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Novel Polymers Containing Fluorescein Moieties

Novel fluorescein-containing polymers and copolymers derived from novel fluorescein-containing bis-acetylene 3 were synthesized by oxidative coupling. A novel fluorescein-containing polyester was obtained by the direct polycondensation of fluorescein. All polymers synthesized were semicrystalline as observed from X-ray diffractometry but formed films of good optical quality when cast from solution. All the polymers synthesized showed luminescence both in solution and the solid state and exhibited third order nonlineal optical susceptibility of the order 10−10 esu.