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Paenkaew S, Mahanitipong U, Rutnakornpituk M, Reiser O. Magnetite Nanoparticles Functionalized with Thermoresponsive Polymers as a Palladium Support for Olefin and Nitroarene Hydrogenation. ACS OMEGA 2023; 8:14531-14540. [PMID: 37125099 PMCID: PMC10134246 DOI: 10.1021/acsomega.3c00117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Accepted: 03/13/2023] [Indexed: 05/03/2023]
Abstract
A thermoresponsive and recyclable nanomaterial was synthesized by surface modification of magnetite nanoparticles (MNPs) with poly(N-isopropylacrylamide-co-diethylaminoethyl methacrylate) (P(NIPAAm-co-DEAEMA)), having PNIPAAm as a thermoresponsive moiety and PDEAEMA for catalyst binding. Palladium (Pd) nanoparticles were incorporated into this material, and the resulting nanocatalyst was efficient in the hydrogenation of olefins and nitro compounds with turnover frequencies (TOFs) up to 750 h-1. Consistent catalytic activity in 10 consecutive runs was observed when performing the hydrogenation at 45 °C, i.e., above the lower critical solution temperature (LCST) of the copolymer (37 °C), followed by cooling to 15 °C, i.e., below the LCST of the copolymer.
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Affiliation(s)
- Sujittra Paenkaew
- Department
of Chemistry and Center of Excellence in Biomaterials, Faculty of
Science, Naresuan University, Phitsanulok 65000, Thailand
- Institute
of Organic Chemistry, University of Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
| | - Usana Mahanitipong
- Department
of Chemistry and Center of Excellence in Biomaterials, Faculty of
Science, Naresuan University, Phitsanulok 65000, Thailand
| | - Metha Rutnakornpituk
- Department
of Chemistry and Center of Excellence in Biomaterials, Faculty of
Science, Naresuan University, Phitsanulok 65000, Thailand
| | - Oliver Reiser
- Institute
of Organic Chemistry, University of Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
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Wang M, Xu Z, Shi Y, Cai F, Qiu J, Yang G, Hua Z, Chen T. TEMPO-Functionalized Nanoreactors from Bottlebrush Copolymers for the Selective Oxidation of Alcohols in Water. J Org Chem 2021; 86:8027-8035. [PMID: 34105963 DOI: 10.1021/acs.joc.1c00410] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Polymeric nanoreactors in water fabricated by the self-assembly of amphiphilic copolymers have attracted much attention due to their good catalytic performance without using organic solvents. However, the disassembly and instability of relevant nanostructures often compromise their potential applicability. Herein, the preparation of 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-containing nanoreactors by the self-assembly of amphiphilic bottlebrush copolymers has been demonstrated. First, a macromonomer having a norbornenyl polymerizable group was prepared by RAFT polymerization of hydrophobic and hydrophilic monomers. The macromonomer was further subjected to ring-opening metathesis polymerization to produce an amphiphilic bottlebrush copolymer. Further, TEMPO, as a catalyst, was introduced into the hydrophobic block through the activated ester strategy. Finally, TEMPO-functionalized polymeric nanoreactors were successfully obtained by self-assembly in water. The nanoreactors exhibited excellent catalytic activities in selective oxidation of alcohols in water. More importantly, the reaction kinetics showed that the turnover frequency is greatly increased compared to that of the similar nanoreactor prepared from liner copolymers under the same conditions. The outstanding catalytic activities of the nanoreactors from bottlebrush copolymers could be attributed to the more stable micellar structure using the substrate concentration effect. This work presents a new strategy to fabricate stable nanoreactors, paving the way for highly efficient organic reactions in aqueous solutions.
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Affiliation(s)
- Maolin Wang
- Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education; Eco-Dyeing and Finishing Engineering Research Center, Ministry of Education; National Base for International Science and Technology Cooperation in Textiles and Consumer-Goods Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Zhenkai Xu
- Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education; Eco-Dyeing and Finishing Engineering Research Center, Ministry of Education; National Base for International Science and Technology Cooperation in Textiles and Consumer-Goods Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yi Shi
- Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education; Eco-Dyeing and Finishing Engineering Research Center, Ministry of Education; National Base for International Science and Technology Cooperation in Textiles and Consumer-Goods Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China.,Zhejiang Cady Industry Co., Ltd., Industrial Garden Lianshi Town, Huzhou 313013, China
| | - Fang Cai
- Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education; Eco-Dyeing and Finishing Engineering Research Center, Ministry of Education; National Base for International Science and Technology Cooperation in Textiles and Consumer-Goods Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China.,Zhejiang Cady Industry Co., Ltd., Industrial Garden Lianshi Town, Huzhou 313013, China
| | - Jiaqi Qiu
- Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education; Eco-Dyeing and Finishing Engineering Research Center, Ministry of Education; National Base for International Science and Technology Cooperation in Textiles and Consumer-Goods Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Guang Yang
- Biomass Molecular Engineering Center, Department of Materials Science and Engineering, Anhui Agricultural University, Hefei 230036, China
| | - Zan Hua
- Biomass Molecular Engineering Center, Department of Materials Science and Engineering, Anhui Agricultural University, Hefei 230036, China
| | - Tao Chen
- Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education; Eco-Dyeing and Finishing Engineering Research Center, Ministry of Education; National Base for International Science and Technology Cooperation in Textiles and Consumer-Goods Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
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Chen T, Fang Q, Zhou L, Xu Z, Qiu J, Wang M, Wang J. Comparative study of cross-linked and linear thermo-responsive carriers supported palladium nanoparticles in the reduction of 4-nitrophenol: Structure, catalytic activity and responsive catalysis property. REACT FUNCT POLYM 2019. [DOI: 10.1016/j.reactfunctpolym.2019.06.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Chen T, Zhang S, Hua L, Xu Z, Zhou L, Wang J. Triphenylphosphine-Containing Thermo-Responsive Copolymers: Synthesis, Characterization and Catalysis Application. Macromol Res 2019. [DOI: 10.1007/s13233-019-7133-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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