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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Porphyrin-Nanodiamond Hybrid Materials-Active, Stable and Reusable Cyclohexene Oxidation Catalysts

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Author(s):
Dias, Lucas D. [1, 2] ; Rodrigues, Fabio M. S. [2] ; Calvete, Mario J. F. [2] ; Carabineiro, Sonia A. C. [3, 4] ; Scherer, Marisa D. [5] ; Caires, Anderson R. L. [6, 5] ; Buijnsters, Josephus G. [7] ; Figueiredo, Jose L. [3] ; Bagnato, Vanderlei S. [1, 8] ; Pereira, Mariette M. [2]
Total Authors: 10
Affiliation:
[1] Univ Sao Paulo, Sao Carlos Inst Phys, BR-13566590 Sao Carlos - Brazil
[2] Univ Coimbra, Dept Quim, CQC, Rua Larga, P-3004535 Coimbra - Portugal
[3] Univ Porto, Fac Engn, Associate Lab LSRE LCM, Lab Catalysis & Mat, Rua Dr Roberto Frias S-N, P-4200465 Porto - Portugal
[4] Univ NOVA Lisboa, LAQV REQUIMTE, Dept Chem, NOVA Sch Sci & Technol, P-2829516 Quinta Da Torre, Caparica - Portugal
[5] Univ Fed Mato Grosso do Sul, Grp Opt & Foton, CP 549, BR-79070900 Campo Grande, MS - Brazil
[6] Univ Essex, Sch Life Sci, Colchester CO4 3SQ, Essex - England
[7] Delft Univ Technol, Dept Precis & Microsyst Engn, Micro & Nano Engn, NL-2628 CD Delft - Netherlands
[8] Texas A&M Univ Coll Stn Texas, Dept Biomed Engn, 400 Bizzell St, College Stn, TX 77843 - USA
Total Affiliations: 8
Document type: Journal article
Source: CATALYSTS; v. 10, n. 12 DEC 2020.
Web of Science Citations: 0
Abstract

The quest for active, yet ``green{''} non-toxic catalysts is a continuous challenge. In this work, covalently linked hybrid porphyrin-nanodiamonds were prepared via ipso nitro substitution reaction and characterized by X-ray photoelectron spectroscopy (XPS), fluorescence spectroscopy, infrared spectroscopy (IR) and thermogravimetry-differential scanning calorimetry (TG-DSC). The amine-functionalized nanodiamonds (ND@NH2) and 2-nitro-5,10,15,20-tetra(4-trifluoromethylphenyl)porphyrin covalently linked to nanodiamonds (ND@beta NH-TPPpCF(3)) were tested using Allium cepa as a plant model, and showed neither phytotoxicity nor cytotoxicity. The hybrid nanodiamond-copper(II)-porphyrin material ND@beta NH-TPPpCF(3)-Cu(II) was also evaluated as a reusable catalyst in cyclohexene allylic oxidation, and displayed a remarkable turnover number (TON) value of approximate to 265,000, using O-2 as green oxidant, in the total absence of sacrificial additives, which is the highest activity ever reported for said allylic oxidation. Additionally, ND@beta NH-TPPpCF(3)-Cu(II) could be easily separated from the reaction mixture by centrifugation, and reused in three consecutive catalytic cycles without major loss of activity. (AU)

FAPESP's process: 13/07276-1 - CEPOF - Optics and Photonic Research Center
Grantee:Vanderlei Salvador Bagnato
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC
FAPESP's process: 14/50857-8 - National Institute in Basic Optics and Applied to Life Sciences
Grantee:Vanderlei Salvador Bagnato
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 19/13569-8 - Study of the Mechanisms of Action in Photodynamic Therapy: From Photosensitizer to Practical Application
Grantee:Lucas Danilo Dias
Support Opportunities: Scholarships in Brazil - Post-Doctoral