Title
A water-solubilized, segmented, alternating block copolymer of a 1,4-bis-styrylbenzene with polyethylene glycol
Author
Jitapa Sumranjit, Paul M. Lahti
Year
2007
Journal
Polymer
Abstract
The synthesis and characterization of a new segmented alternating copolymer is described, having monodisperse, partially methoxy-substituted bis-1,4-styrylbenzene chromophores linked with polyethylene glycol segments (average MW 1000) at the terminal aryl rings, so that the chromophore long axis lies along the polymerization vector. The product polymer is a blue-emitting material that is soluble in organic solvents and water. It is a waxy solid with a degree of polymerization of ∼3–6, a melting transition at 35 °C and good thermogravimetric stability up to 300 °C. It exhibits blue photoluminescence (PL) at 437 nm in chloroform, and at 445–465 nm in water, with relative PL quantum yields of 0.7 and 0.3, respectively. Its neat film luminescence maximum is 460 nm; solid state blending with PMMA blue shifts the emission to 440 nm at 10% polymer in PMMA.
Instrument
FP-6500
Keywords
Photoluminescence, Chemical stability, Polymers, Fluorescence, Materials