Size Control and Enhanced Stability of Silver Nanoparticles by Cyclic Poly(ethylene glycol)

Wang, Yubo; Quinsaat, Jose Enrico Quijano; Li, Feng; Isono, Takuya; Tajima, Kenji; Satoh, Toshifumi; Sato, Shin-ichiro; Yamamoto, Takuya

Size Control and Enhanced Stability of Silver Nanoparticles by Cyclic Poly(ethylene glycol)

Wang, Yubo; Quinsaat, Jose Enrico Quijano; Li, Feng et al.

Polymers, 2022, 14(21), 4535

Permalink : https://hdl.handle.net/2115/87540

このアイテムのアクセス数:305件（2026-01-25 11:42 集計）

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アクセス権	metadata only access
URI	https://hdl.handle.net/2115/87540
タイトル	Size Control and Enhanced Stability of Silver Nanoparticles by Cyclic Poly(ethylene glycol)
著者	Wang, Yubo ; Quinsaat, Jose Enrico Quijano ; Li, Feng ; Isono, Takuya ; Tajima, Kenji ; Satoh, Toshifumi ; Sato, Shin-ichiro ; Yamamoto, Takuya
著者名 Wang, Yubo
著者名 Quinsaat, Jose Enrico Quijano
著者名 Li, Feng
著者名 Isono, Takuya
e-Rad_Researcher 00271643 著者名 Tajima, Kenji
e-Rad_Researcher 80291235 著者名 Satoh, Toshifumi
e-Rad_Researcher 10262601 著者名 Sato, Shin-ichiro
e-Rad_Researcher 30525986 著者名 Yamamoto, Takuya
言語	英語
キーワード	polymer topology
	PEG
	AgNPs
	size control
	stability
発行日	2022-10-26
出版者	MDPI
収録物名	Polymers
巻(号)	14(21)
ページ	4535
抄録	Silver nanoparticles (AgNPs) are used in a wide range of applications, and the size control and stability of the nanoparticles are crucial aspects in their applications. In the present study, cyclized poly(ethylene glycol) (c-PEG) with various molecular weights, along with linear PEG with hydroxy chain ends (HO-PEG-OH) and methoxy chain ends (MeO-PEG-OMe) were applied for the Tollens' synthesis of AgNPs. The particle size was significantly affected by the topology and end groups of PEG. For example, the size determined by TEM was 40 +/- 7 nm for HO-PEG(5k)-OH, 21 +/- 4 nm for c-PEG(5k), and 48 +/- 9 nm for MeO-PEG(5k)-OMe when the molar ratio of PEG to AgNO3 (omega) was 44. The stability of AgNPs was also drastically improved by cyclization; the relative UV-Vis absorption intensity (A/A(0) x 100%) at lambda(max) to determine the proportion of persisting AgNPs in an aqueous NaCl solution (37.5 mM) was 58% for HO-PEG(5k)-OH, 80% for c-PEG(5k), and 40% for MeO-PEG(5k)-OMe, despite the fact that AgNPs with c-PEG(5k) were much smaller than those with HO-PEG(5k)-OH and MeO-PEG(5k)-OMe.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
EISSN	2073-4360
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.3390/polym14214535