Synthesis of a nanostructured star block copolymer with a cyclotriphosphazene core

Jae Kook Han; Sung Tae Kim; Hyun Jung Kim; Yong Ku Kwon

doi:10.1166/jnn.2006.031

Synthesis of a nanostructured star block copolymer with a cyclotriphosphazene core

Jae Kook Han, Sung Tae Kim, Hyun Jung Kim, Yong Ku Kwon

Inha University

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

8 Scopus citations

Abstract

An amphiphilic star block copolymer of poly(L-lactic acid)-b-poly(ethylene glycol) (PLLA-b-PEG) was synthesized using a hexachlorocyclotriphosphazene ring (N ₃P ₃Cl ₆) as a core. N ₃P ₃(OC ₆H ₄-p-CHO) ₆ was prepared by the reaction between the hexachlorocyclotriphosphazene core and 4- hydroxybenzaldehyde sodium salt. N ₃P ₃(OC ₆H ₄-p-CH ₂OH) ₆ was then obtained by reduction of N ₃P ₃(OC ₆H ₄-p-CHO) _.. N ₃P ₃(OC ₆H ₄-p-CH ₂OH) ₆ was used as an initiator to obtain a PLLA-grafted star branched polymer by polymerizing lactide, which was then treated with succinic acid to produce a carboxylated PLLA-grafted star polymer. PEG blocks were attached to a carboxylated PLLA-grafted star polymer to produce an amphiphilic PLLA-b-PEG-grafted star block polymer by additional esterification with poly(ethylene glycol methyl ether).

Original language	English
Pages (from-to)	3446-3449
Number of pages	4
Journal	Journal of Nanoscience and Nanotechnology
Volume	6
Issue number	11
DOIs	https://doi.org/10.1166/jnn.2006.031
State	Published - Nov 2006

Keywords

Amphiphilic block copolymer
Lactide
Phosphazene
Star polymer

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10.1166/jnn.2006.031

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@article{9c0ff599a2d54562a16d034e8e598507,

title = "Synthesis of a nanostructured star block copolymer with a cyclotriphosphazene core",

abstract = "An amphiphilic star block copolymer of poly(L-lactic acid)-b-poly(ethylene glycol) (PLLA-b-PEG) was synthesized using a hexachlorocyclotriphosphazene ring (N 3P 3Cl 6) as a core. N 3P 3(OC 6H 4-p-CHO) 6 was prepared by the reaction between the hexachlorocyclotriphosphazene core and 4- hydroxybenzaldehyde sodium salt. N 3P 3(OC 6H 4-p-CH 2OH) 6 was then obtained by reduction of N 3P 3(OC 6H 4-p-CHO) .. N 3P 3(OC 6H 4-p-CH 2OH) 6 was used as an initiator to obtain a PLLA-grafted star branched polymer by polymerizing lactide, which was then treated with succinic acid to produce a carboxylated PLLA-grafted star polymer. PEG blocks were attached to a carboxylated PLLA-grafted star polymer to produce an amphiphilic PLLA-b-PEG-grafted star block polymer by additional esterification with poly(ethylene glycol methyl ether).",

keywords = "Amphiphilic block copolymer, Lactide, Phosphazene, Star polymer",

author = "Han, {Jae Kook} and Kim, {Sung Tae} and Kim, {Hyun Jung} and Kwon, {Yong Ku}",

year = "2006",

month = nov,

doi = "10.1166/jnn.2006.031",

language = "English",

volume = "6",

pages = "3446--3449",

journal = "Journal of Nanoscience and Nanotechnology",

issn = "1533-4880",

publisher = "American Scientific Publishers",

number = "11",

}

TY - JOUR

T1 - Synthesis of a nanostructured star block copolymer with a cyclotriphosphazene core

AU - Han, Jae Kook

AU - Kim, Sung Tae

AU - Kim, Hyun Jung

AU - Kwon, Yong Ku

PY - 2006/11

Y1 - 2006/11

N2 - An amphiphilic star block copolymer of poly(L-lactic acid)-b-poly(ethylene glycol) (PLLA-b-PEG) was synthesized using a hexachlorocyclotriphosphazene ring (N 3P 3Cl 6) as a core. N 3P 3(OC 6H 4-p-CHO) 6 was prepared by the reaction between the hexachlorocyclotriphosphazene core and 4- hydroxybenzaldehyde sodium salt. N 3P 3(OC 6H 4-p-CH 2OH) 6 was then obtained by reduction of N 3P 3(OC 6H 4-p-CHO) .. N 3P 3(OC 6H 4-p-CH 2OH) 6 was used as an initiator to obtain a PLLA-grafted star branched polymer by polymerizing lactide, which was then treated with succinic acid to produce a carboxylated PLLA-grafted star polymer. PEG blocks were attached to a carboxylated PLLA-grafted star polymer to produce an amphiphilic PLLA-b-PEG-grafted star block polymer by additional esterification with poly(ethylene glycol methyl ether).

AB - An amphiphilic star block copolymer of poly(L-lactic acid)-b-poly(ethylene glycol) (PLLA-b-PEG) was synthesized using a hexachlorocyclotriphosphazene ring (N 3P 3Cl 6) as a core. N 3P 3(OC 6H 4-p-CHO) 6 was prepared by the reaction between the hexachlorocyclotriphosphazene core and 4- hydroxybenzaldehyde sodium salt. N 3P 3(OC 6H 4-p-CH 2OH) 6 was then obtained by reduction of N 3P 3(OC 6H 4-p-CHO) .. N 3P 3(OC 6H 4-p-CH 2OH) 6 was used as an initiator to obtain a PLLA-grafted star branched polymer by polymerizing lactide, which was then treated with succinic acid to produce a carboxylated PLLA-grafted star polymer. PEG blocks were attached to a carboxylated PLLA-grafted star polymer to produce an amphiphilic PLLA-b-PEG-grafted star block polymer by additional esterification with poly(ethylene glycol methyl ether).

KW - Amphiphilic block copolymer

KW - Lactide

KW - Phosphazene

KW - Star polymer

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U2 - 10.1166/jnn.2006.031

DO - 10.1166/jnn.2006.031

M3 - Article

C2 - 17252786

AN - SCOPUS:33845746364

SN - 1533-4880

VL - 6

SP - 3446

EP - 3449

JO - Journal of Nanoscience and Nanotechnology

JF - Journal of Nanoscience and Nanotechnology

IS - 11

ER -

Synthesis of a nanostructured star block copolymer with a cyclotriphosphazene core

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