Toward the design of LPEI containing block copolymers: Improved synthesis protocol, selective hydrolysis, and detailed characterization

Lutz Tauhardt; Kristian Kempe; Ulrich S. Schubert

doi:10.1002/pola.26261

Toward the design of LPEI containing block copolymers: Improved synthesis protocol, selective hydrolysis, and detailed characterization

Lutz Tauhardt, Kristian Kempe, Ulrich S. Schubert

Research output: Contribution to journal › Article › Research › peer-review

14 Citations (Scopus)

Abstract

The synthesis of poly(2-ethyl-2-oxazoline)-b-linear poly(ethylenimine) (PEtOx-b-LPEI) copolymers by selective basic hydrolysis of PEtOx-b-poly(2-H-2- oxazoline) (PEtOx-b-PHOx) is described. For this purpose, an easy method for the preparation of the 2-H-2-oxazoline (HOx) monomer was developed. Based on the microwave-assisted polymerization kinetics for this monomer, PEtOx-b-PHOx copolymers were prepared. Subsequently, the block copolymers were selectively hydrolyzed to PEtOx-b-LPEI under basic conditions. The success of the polymerizations and subsequent post-polymerization reactions was demonstrated by ¹H NMR spectroscopy and MALDI-TOF-MS investigations of the obtained polymers.

Original language	English
Pages (from-to)	4516-4523
Number of pages	8
Journal	Journal of Polymer Science, Part A: Polymer Chemistry
Volume	50
Issue number	21
DOIs	https://doi.org/10.1002/pola.26261
Publication status	Published - 1 Nov 2012
Externally published	Yes

Keywords

block copolymer
cationic polymerization
linear poly(ethylenimine)
poly(2-H-2-oxazoline)
ring-opening polymerization

Access to Document

10.1002/pola.26261

Cite this

@article{91a4a19d87bb417e9e02c62b33d921e2,

title = "Toward the design of LPEI containing block copolymers: Improved synthesis protocol, selective hydrolysis, and detailed characterization",

abstract = "The synthesis of poly(2-ethyl-2-oxazoline)-b-linear poly(ethylenimine) (PEtOx-b-LPEI) copolymers by selective basic hydrolysis of PEtOx-b-poly(2-H-2- oxazoline) (PEtOx-b-PHOx) is described. For this purpose, an easy method for the preparation of the 2-H-2-oxazoline (HOx) monomer was developed. Based on the microwave-assisted polymerization kinetics for this monomer, PEtOx-b-PHOx copolymers were prepared. Subsequently, the block copolymers were selectively hydrolyzed to PEtOx-b-LPEI under basic conditions. The success of the polymerizations and subsequent post-polymerization reactions was demonstrated by 1H NMR spectroscopy and MALDI-TOF-MS investigations of the obtained polymers.",

keywords = "block copolymer, cationic polymerization, linear poly(ethylenimine), poly(2-H-2-oxazoline), ring-opening polymerization",

author = "Lutz Tauhardt and Kristian Kempe and Schubert, {Ulrich S.}",

year = "2012",

month = nov,

day = "1",

doi = "10.1002/pola.26261",

language = "English",

volume = "50",

pages = "4516--4523",

journal = "Journal of Polymer Science, Part A: Polymer Chemistry",

issn = "0887-624X",

publisher = "John Wiley & Sons",

number = "21",

}

Toward the design of LPEI containing block copolymers : Improved synthesis protocol, selective hydrolysis, and detailed characterization. / Tauhardt, Lutz; Kempe, Kristian; Schubert, Ulrich S.

In: Journal of Polymer Science, Part A: Polymer Chemistry, Vol. 50, No. 21, 01.11.2012, p. 4516-4523.

Research output: Contribution to journal › Article › Research › peer-review

TY - JOUR

T1 - Toward the design of LPEI containing block copolymers

T2 - Improved synthesis protocol, selective hydrolysis, and detailed characterization

AU - Tauhardt, Lutz

AU - Kempe, Kristian

AU - Schubert, Ulrich S.

PY - 2012/11/1

Y1 - 2012/11/1

N2 - The synthesis of poly(2-ethyl-2-oxazoline)-b-linear poly(ethylenimine) (PEtOx-b-LPEI) copolymers by selective basic hydrolysis of PEtOx-b-poly(2-H-2- oxazoline) (PEtOx-b-PHOx) is described. For this purpose, an easy method for the preparation of the 2-H-2-oxazoline (HOx) monomer was developed. Based on the microwave-assisted polymerization kinetics for this monomer, PEtOx-b-PHOx copolymers were prepared. Subsequently, the block copolymers were selectively hydrolyzed to PEtOx-b-LPEI under basic conditions. The success of the polymerizations and subsequent post-polymerization reactions was demonstrated by 1H NMR spectroscopy and MALDI-TOF-MS investigations of the obtained polymers.

AB - The synthesis of poly(2-ethyl-2-oxazoline)-b-linear poly(ethylenimine) (PEtOx-b-LPEI) copolymers by selective basic hydrolysis of PEtOx-b-poly(2-H-2- oxazoline) (PEtOx-b-PHOx) is described. For this purpose, an easy method for the preparation of the 2-H-2-oxazoline (HOx) monomer was developed. Based on the microwave-assisted polymerization kinetics for this monomer, PEtOx-b-PHOx copolymers were prepared. Subsequently, the block copolymers were selectively hydrolyzed to PEtOx-b-LPEI under basic conditions. The success of the polymerizations and subsequent post-polymerization reactions was demonstrated by 1H NMR spectroscopy and MALDI-TOF-MS investigations of the obtained polymers.

KW - block copolymer

KW - cationic polymerization

KW - linear poly(ethylenimine)

KW - poly(2-H-2-oxazoline)

KW - ring-opening polymerization

UR - http://www.scopus.com/inward/record.url?scp=84867049691&partnerID=8YFLogxK

U2 - 10.1002/pola.26261

DO - 10.1002/pola.26261

M3 - Article

AN - SCOPUS:84867049691

VL - 50

SP - 4516

EP - 4523

JO - Journal of Polymer Science, Part A: Polymer Chemistry

JF - Journal of Polymer Science, Part A: Polymer Chemistry

SN - 0887-624X

IS - 21

ER -

Toward the design of LPEI containing block copolymers: Improved synthesis protocol, selective hydrolysis, and detailed characterization

Abstract

Keywords

Access to Document

Other files and links

Cite this