Thermal properties and processability of dialkoxy-PPV precursors

Synthesis of Light-Emitting Conjugated Polymers for Applications in Electroluminescent Devices

“…Longer alkyl chains also lower the glass transition temperature of the polymers. 242 The first LEDs using such soluble PPV derivatives were fabricated independently by researchers at Sumitomo 233,234 and at Santa Barbara. 235,236,238,240,243 They have become the most widely studied group of electroluminescent conjugated polymers.…”

“…In addition, the fluorescence efficiency of polymers bearing longer side-chains is increased by several orders of magnitude compared with that of the dimethoxy polymer 19 . Longer alkyl chains also lower the glass transition temperature of the polymers …”

Radiation effects on the thermal degradation of poly(vinyl chloride) and poly(vinyl alcohol)

“…The latter approach has been employed successfully to solve the synthetic difficulty in the former method or to circumvent the problem of the poor processability frequently encountered in conjugated polymer processing. For example, continuous films of polyacetylene 1,2 and poly(p-phenylene vinylenes) [3][4][5] have been obtained by the thermal elimination of small molecular compounds from soluble precursor polymers.…”

A highly efficient route towards well-defined modifications of poly(p-phenylene vinylene)

“…1. By detailed 13 C-NMR analysis it can be shown that this oxidation takes place in a random way in which the sulfonyl functionalities are distributed statistically. Sequence information can be derived from the aromatic signals of the quaternary atoms.…”

“…A series of copolymers with sulfonyl contents of 51, 42, 31, 15, 12 and 8% (determined by 13 C-NMR) were prepared and the UVabsorption and photoluminescence properties were determined on spin-coated films after elimination of the sulfinyl groups. UV absorption of these films (Fig.…”