Supplementary material from "The <i>in situ</i> synthesis of PbS nanocrystals from lead(II) <i>n</i>-octylxanthate within a 1,3-diisopropenylbenzene–bisphenol A dimethacrylate sulfur copolymer"

Published on 2017-08-12T07:57:31Z (GMT) by
The synthesis of lead sulfide nanocrystals within a solution processable sulfur ‘inverse vulcanization’ polymer thin film matrix was achieved from the <i>in situ</i> thermal decomposition of lead(II) <i>n</i>-octylxanthate, [Pb(S<sub>2</sub>COOct)<sub>2</sub>]. The growth of nanocrystals within polymer thin films from single-source precursors offers a faster route to networks of nanocrystals within polymers when compared with <i>ex situ</i> routes. The ‘inverse vulcanization’ sulfur polymer described herein contains a hybrid linker system which demonstrates high solubility in organic solvents, allowing solution processing of the sulfur-based polymer, ideal for the formation of thin films. The process of nanocrystal synthesis within sulfur films was optimized by observing nanocrystal formation by X-ray photoelectron spectroscopy and X-ray diffraction. Examination of the film morphology by scanning electron microscopy showed that beyond a certain precursor concentration the nanocrystals formed were not only within the film but also on the surface suggesting a loading limit within the polymer. We envisage this material could be used as the basis of a new generation of materials where solution processed sulfur polymers act as an alternative to traditional polymers.

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McNaughter, P. D.; Bear, J. C.; Mayes, A. G.; Parkin, I. P.; O'Brien, P. (2017): Supplementary material from "The in situ synthesis of PbS nanocrystals from lead(II) n-octylxanthate within a 1,3-diisopropenylbenzene–bisphenol A dimethacrylate sulfur copolymer". The Royal Society.