Organotin anchored polymers : synthesis, NMR studies and applications as catalysts and anion sensors.

Project Details

Description

This project aims at synthesizing various tin containing polymers and characterising them by advanced NMR investigations, as well as infrared spectroscopy and elemental analysis. Polymers of the type P-(CH2)n SnBuX2, with X = Cl, Br, F, OR', OOC-R' (typeI), which are Amberlite based materials, as well as of type II, [P-(CH2)n-COO]2 SnBu2 (typeIIa) and [P-(CH2)n-COO-SnBu2]2O are completely insoluble and intended for applications in catalysis. The nature and the degree of functionalization by organotin moieties will be determined by CP-MAS tin-117NMR. Triorganotinpolycarboxylates derived from two types of polycarboxylic acids, mixed polymethyl-methacrylates (type III) and polycarboxy functionalized polystrenes (type IV), will be synthesised, and assessed as anion sensors. If they turn out to be soluble, as expected, it will be investigated for these polymers whether 1D and 2D gradient assisted 1H-119 Sn heteronuclear correlation techniques can be used in order to characterize their structure and their donor-acceptor interactions with anions. Whenever they are insoluble, the polymer types III and IV will be characterized as types I and II. It will be investigated to which extent after interaction with anions at the liquid-solid interface, the nature and binding strength of anions to the tin moieties can be characterized by solid state tin NMR. NMR studies on correlations between anion sensor activity and structure are planned. This application is to be situated in the frame of a co-financement, as it is the main topic of a frame project financed for working and personnel expenses by the FWO, and it has been transferred for equipment investment to the "Nationale loterij" with VUB-prefinancement.
AcronymOZR362
StatusFinished
Effective start/end date1/01/9931/12/02

Keywords

  • donor-acceptor interactions
  • anion sensors
  • organotin chemistry
  • polymers
  • tin NMR

Flemish discipline codes

  • (Bio)chemical engineering
  • Chemical sciences