Preparation of polymer-supported gold nanoparticles based on resins containing ionic liquid-like fragments: easy control of size and stability

Ru@PsIL‐Catalyzed Synthesis of N‐Formamides and Benzimidazole by using Carbon Dioxide and Dimethylamine Borane

“…The synthesis of the Ru@PsIL catalyst was performed by modifying the reported procedure (Figure S2 in the Supporting Information) . Typically, the Ru@PsIL was synthesized by the immobilization of Merrifield peptide resin with 1,2‐dimethyl‐1 H ‐imidazole to give PsIL (Scheme S2 in the Supporting Information).…”

“…The presence of functional moieties with ionic nature in the polymer backbone enhances the dispersion and stabilization of NPs. Also, the immobilized ILs as supports for catalysts, not only benefit from the excellent physicochemical properties of ILs but also help in increasing the recyclability of catalysts and ease catalyst–product separation . The immobilization of ILs on polymers lets them act as a solid support and provide a similar electronic environment as ILs for the stabilization of NPs…”

Synergy between supported ionic liquid-like phases and immobilized palladium N-heterocyclic carbene–phosphine complexes for the Negishi reaction under flow conditions

“…The higher reactivity of the cocktails based on 9b and 9c can be associated with the presence of PdNPs with smaller size distributions. Our previous results obtained for AuNPs-SILLPs indicated that for the macroporous resins the NP size decreased when the size of the aliphatic residue of the imidazolium units increased with decyl N-substitution leading to smaller particle sizes [39]. The analysis of the polymeric samples revealed similar trends for the case of PdNPs.…”

“…Catalytic systems 12a,b were also recycled being 12a even more active in a second than in the first cycle while 12b reduced its activity (see Table 2). To understand these differences, it must be noted that the nature of the MNPs obtained in SILLPs is very sensitive to the procedure used for their preparation and this significantly affects its activity but also their recyclability [35,39]. The capacity to generate active catalytic species from the MNPs is essential in the first run, but the capacity of the system, including imidazolium fragments and remaining MNPs, to efficiently recapture the soluble species in an active form is key for the second and successive runs.…”

Multifunctional Polymers Based on Ionic Liquid and Rose Bengal Fragments for the Conversion of CO2 to Carbonates

“…The synthetic protocol for the preparation of SILLPs has been already described in detail allowing a quantitative transformation of the chloromethyl fragments into alkyl benzyl imidazolium groups (Scheme 1 and Table S1). 23,24 Different PS-DVB materials bearing alkyl imidazolium moieties have been tested as catalysts for the addition of CO 2 to epoxides. 8,17,25,26 In general, such materials required harsh experimental conditions (temperature >130 °C and pressure >10 bar) to lead to the corresponding carbonates.…”