Alkylated polyethyleneimine/polyoxometalate synzymes as catalysts for the oxidation of hydrophobic substrates in water with hydrogen peroxide

Adina Haimov, Hagai Cohen, Ronny Neumann

Research output: Contribution to journalArticle

116 Citations (Scopus)

Abstract

Combinations of alkylated polyethylenimine and polyoxometalates yield water-soluble synzymes with hydrophobic regions that allowed the aqueous biphasic selective oxidation of very hydrophobic, water-insoluble substrates with hydrogen peroxide. With the alkylated PEI/{PO4[WO(O2)2]4}3- highly effective C-C bond cleavage of alkenes to aldheydes was observed. The synzymes have both tertiary and quaternary amine centers as shown by a combination of 15N-1H HMBC and XPS measurements. The existence of hydrophobic regions was concluded from the measurement of contact angles and a hypsochromic shift of a fluorescent probe.

Original languageEnglish
Pages (from-to)11762-11763
Number of pages2
JournalJournal of the American Chemical Society
Volume126
Issue number38
DOIs
Publication statusPublished - Sep 29 2004

Fingerprint

Polyethyleneimine
Hydrogen peroxide
Hydrogen Peroxide
Oxidation
Polyetherimides
Catalysts
Water
Alkenes
Substrates
Fluorescent Dyes
Olefins
Contact angle
Amines
X ray photoelectron spectroscopy
polyoxometalate I

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Alkylated polyethyleneimine/polyoxometalate synzymes as catalysts for the oxidation of hydrophobic substrates in water with hydrogen peroxide. / Haimov, Adina; Cohen, Hagai; Neumann, Ronny.

In: Journal of the American Chemical Society, Vol. 126, No. 38, 29.09.2004, p. 11762-11763.

Research output: Contribution to journalArticle

@article{c90dadf41366423d8b7f5d65727d6c2b,
title = "Alkylated polyethyleneimine/polyoxometalate synzymes as catalysts for the oxidation of hydrophobic substrates in water with hydrogen peroxide",
abstract = "Combinations of alkylated polyethylenimine and polyoxometalates yield water-soluble synzymes with hydrophobic regions that allowed the aqueous biphasic selective oxidation of very hydrophobic, water-insoluble substrates with hydrogen peroxide. With the alkylated PEI/{PO4[WO(O2)2]4}3- highly effective C-C bond cleavage of alkenes to aldheydes was observed. The synzymes have both tertiary and quaternary amine centers as shown by a combination of 15N-1H HMBC and XPS measurements. The existence of hydrophobic regions was concluded from the measurement of contact angles and a hypsochromic shift of a fluorescent probe.",
author = "Adina Haimov and Hagai Cohen and Ronny Neumann",
year = "2004",
month = "9",
day = "29",
doi = "10.1021/ja046349u",
language = "English",
volume = "126",
pages = "11762--11763",
journal = "Journal of the American Chemical Society",
issn = "0002-7863",
publisher = "American Chemical Society",
number = "38",

}

TY - JOUR

T1 - Alkylated polyethyleneimine/polyoxometalate synzymes as catalysts for the oxidation of hydrophobic substrates in water with hydrogen peroxide

AU - Haimov, Adina

AU - Cohen, Hagai

AU - Neumann, Ronny

PY - 2004/9/29

Y1 - 2004/9/29

N2 - Combinations of alkylated polyethylenimine and polyoxometalates yield water-soluble synzymes with hydrophobic regions that allowed the aqueous biphasic selective oxidation of very hydrophobic, water-insoluble substrates with hydrogen peroxide. With the alkylated PEI/{PO4[WO(O2)2]4}3- highly effective C-C bond cleavage of alkenes to aldheydes was observed. The synzymes have both tertiary and quaternary amine centers as shown by a combination of 15N-1H HMBC and XPS measurements. The existence of hydrophobic regions was concluded from the measurement of contact angles and a hypsochromic shift of a fluorescent probe.

AB - Combinations of alkylated polyethylenimine and polyoxometalates yield water-soluble synzymes with hydrophobic regions that allowed the aqueous biphasic selective oxidation of very hydrophobic, water-insoluble substrates with hydrogen peroxide. With the alkylated PEI/{PO4[WO(O2)2]4}3- highly effective C-C bond cleavage of alkenes to aldheydes was observed. The synzymes have both tertiary and quaternary amine centers as shown by a combination of 15N-1H HMBC and XPS measurements. The existence of hydrophobic regions was concluded from the measurement of contact angles and a hypsochromic shift of a fluorescent probe.

UR - http://www.scopus.com/inward/record.url?scp=4644264475&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=4644264475&partnerID=8YFLogxK

U2 - 10.1021/ja046349u

DO - 10.1021/ja046349u

M3 - Article

VL - 126

SP - 11762

EP - 11763

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

SN - 0002-7863

IS - 38

ER -