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Chiral Bifunctional Thioureas and Squaramides Grafted into Old Polymers of Intrinsic Microporosity for Novel Applications

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Academic year: 2020

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Figure

Figure 1. Fourier transform infrared spectroscopy (FTIR) spectra of PIM-1, Amine-PIM-1, isothiocyanate-PIM-1, and catalyst I.
Figure 2 shows TGA thermograms. It is well-known that PIM-1 powder polymer have an extraordinarily high thermal stability of above 400 ◦ C with a single-step decomposition pattern [ 28 , 29 ]
Figure 3. Environmental scanning electron microscopy (ESEM) micrographs of PIM-1 (a), Amine-PIM-1 (b), and catalyst III (c)
Table 1. Nitro-Michael addition of different nucleophiles to trans-β-nitrostyrene a . Entry 5a–c Catalyst t (H) Product (Yield) b Dr c Er d (Conf)
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