Complex Formation of Gold Nanoparticles with Collagen in Aqueous Media Studied by X-ray Scattering and Absorption Spectroscopy

Sagawa, Kota; Terao, Ken

doi:https://doi.org/10.1021/acs.langmuir.4c02903

アクセス数:35件（2025-01-03 11:29 集計）

固定URL: https://hdl.handle.net/11094/98218

閲覧可能ファイル

ファイル	フォーマット	利用条件	サイズ	閲覧回数	利用開始日	説明	information
Langmuir_40_39_20755	pdf	なし	3.75 MB		2025.09.20

論文情報

ファイル出力

タイトル	Complex Formation of Gold Nanoparticles with Collagen in Aqueous Media Studied by X-ray Scattering and Absorption Spectroscopy
著者	著者名 Sagawa, Kota
著者	NRID 1000060334132 1000060334132 ORCID 0000-0001-7363-4491 0000-0001-7363-4491 researchmap permalink kenterao kenterao Scopus Author ID 7101653015 7101653015 著者名 Terao, Ken
内容	Sagawa K., Terao K. Complex Formation of Gold Nanoparticles with Collagen in Aqueous Media Studied by X-ray Scattering and Absorption Spectroscopy. Langmuir 40, 20755 (2024); https://doi.org/10.1021/acs.langmuir.4c02903.
抄録	Small-angle X-ray scattering and UV-vis absorption measurements were performed on mixed solutions of gold nanoparticles (AuNPs) and atelocollagen (AC), triple-helical collagen without telopeptide, in acetate buffer at pH 4 under different temperature conditions, i.e., preparation temperature Tprep and measurement temperature Tmeas. Due to the significantly higher electron density of gold than that of AC, the structure factor S(q) of AuNPs is readily estimated from the scattering intensities of AuNP-only and mixed solutions. The resulting S(q) profile for the mixed solution indicated significant attractive interactions, especially for the smaller AuNPs. Therefore, the sticky sphere model was applied to analyze S(q) to determine the interaction parameters at different Tprep and Tmeas. The attractive interactions between AuNPs were higher at higher Tprep, suggesting that single-chain AC tends to make the interactions between AuNPs more attractive than those for triple-helical AC. Complex formation was also detected by the aggregation-induced surface plasmon absorption shift. More densely packed AuNPs were detected from the absorption spectra for higher AuNP content at which the ζ potential disappeared, while a split absorption band was also found, indicating that not all AuNPs can form a complex with AC at ζ = 0.
出版者	American Chemical Society
収録物名	Langmuir
巻(号)	40(39)
ページ	20755-20762
刊行年月	2024-09-20
言語	英語
ハンドルURL	https://hdl.handle.net/11094/98218
PISSN	07437463
eISSN	15205827
関連情報 (isVersionOf)	DOI (出版社版) https://doi.org/10.1021/acs.langmuir.4c02903
アクセス権	embargoed access
権利情報	This document is the Accepted Manuscript version of a Published Work that appeared in final form in Langmuir, © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.langmuir.4c02903.
権利情報	The full-text file will be made open to the public on 20 September 2025 in accordance with the publisher's policy.
出版タイプ	Accepted Manuscript
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCTERMS.bibliographicCitation	Langmuir. 2024, 40(39), p. 20755-20762
DC.title	Complex Formation of Gold Nanoparticles with Collagen in Aqueous Media Studied by X-ray Scattering and Absorption Spectroscopy
DC.creator	Sagawa, Kota
DC.creator	Terao, Ken
DC.publisher	American Chemical Society
DC.language' scheme='DCTERMS.RFC1766	英語
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2024-09-20
DC.identifier	https://doi.org/10.1021/acs.langmuir.4c02903
DC.description	Sagawa K., Terao K. Complex Formation of Gold Nanoparticles with Collagen in Aqueous Media Studied by X-ray Scattering and Absorption Spectroscopy. Langmuir 40, 20755 (2024); https://doi.org/10.1021/acs.langmuir.4c02903.
DCTERMS.abstract	Small-angle X-ray scattering and UV-vis absorption measurements were performed on mixed solutions of gold nanoparticles (AuNPs) and atelocollagen (AC), triple-helical collagen without telopeptide, in acetate buffer at pH 4 under different temperature conditions, i.e., preparation temperature Tprep and measurement temperature Tmeas. Due to the significantly higher electron density of gold than that of AC, the structure factor S(q) of AuNPs is readily estimated from the scattering intensities of AuNP-only and mixed solutions. The resulting S(q) profile for the mixed solution indicated significant attractive interactions, especially for the smaller AuNPs. Therefore, the sticky sphere model was applied to analyze S(q) to determine the interaction parameters at different Tprep and Tmeas. The attractive interactions between AuNPs were higher at higher Tprep, suggesting that single-chain AC tends to make the interactions between AuNPs more attractive than those for triple-helical AC. Complex formation was also detected by the aggregation-induced surface plasmon absorption shift. More densely packed AuNPs were detected from the absorption spectra for higher AuNP content at which the ζ potential disappeared, while a split absorption band was also found, indicating that not all AuNPs can form a complex with AC at ζ = 0.
DC.rights	This document is the Accepted Manuscript version of a Published Work that appeared in final form in Langmuir, © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.langmuir.4c02903.
DC.rights	The full-text file will be made open to the public on 20 September 2025 in accordance with the publisher's policy.
DC.format	98218
citation_title	Complex Formation of Gold Nanoparticles with Collagen in Aqueous Media Studied by X-ray Scattering and Absorption Spectroscopy
citation_author	Sagawa, Kota
citation_author	Terao, Ken
citation_publisher	American Chemical Society
citation_language	英語
citation_date	2024-09-20
citation_journal_title	Langmuir
citation_volume	40
citation_issue	39
citation_firstpage	20755
citation_lastpage	20762
citation_doi	https://doi.org/10.1021/acs.langmuir.4c02903
citation_public_url	https://hdl.handle.net/11094/98218

閲覧可能ファイル

論文情報

論文詳細を表示