An unprecedented yellow polymer with low-coordinate phosphorus atoms in the backbone has been prepared. The material is soluble in polar organic solvents, and moderate molecular weights (Mn=2900–10 500 g mol−1) were estimated from 31P NMR spectroscopic end-group analysis. The possible π-conjugation was investigated by UV/Vis spectroscopy, which revealed a red shift in λmax for the polymer when compared with colorless molecular-model systems (see picture; left: model system, right: new polymer, in THF).
No takes yet. Share an insight, caveat, or question.
Wright et al. (2002) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: