The effects of polyethylene glycol on the nucleation and growth of DNA-functionalized gold nanoparticles crystals

被引：2

作者：

Kojima, Shoko ^{[1
]}

Zhang, Lidong ^{[1
]}

Kumar, Chandan ^{[3
]}

Sumi, Hayato ^{[1
]}

Ohta, Norobu ^{[2
]}

Sekiguchi, Hiroshi ^{[2
]}

Tsuzuki, Kentaro ^{[1
,4
,6
]}

Harada, Shunta ^{[1
,3
]}

Ujihara, Toru ^{[1
,3
]}

Tsukamoto, Katsuo ^{[3
,5
]}

Tagawa, Miho ^{[1
,3
]}

机构：

[1] Nagoya Univ, Dept Mat Proc Engn, Chikusa Ku, Nagoya, Aichi 4648601, Japan

[2] Japan Synchrotron Radiat Res Inst JASRI, Kouto, Hyogo 6795198, Japan

[3] Nagoya Univ, Inst Mat & Syst Sustainabil, Adv Measurement Technol Ctr, Chikusa Ku, Nagoya, Aichi 4648601, Japan

[4] Nagoya Univ, Tech Ctr, Nagoya, Aichi 4648601, Japan

[5] Tohoku Univ, Grad Sch Sci, Sendai, Miyagi 9808579, Japan

[6] Tohoku Univ, Fac Sci, Sendai, Miyagi 9808579, Japan

来源：

JOURNAL OF CRYSTAL GROWTH | 2024年 / 640卷

关键词：

Nanoparticle; DNA; Self-assembly; Small angle X-ray scattering; CRYSTALLIZATION; BEHAVIOR; COLLOIDS;

D O I：

10.1016/j.jcrysgro.2024.127740

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

This study presents findings on the crystal growth of DNA-functionalized gold nanoparticles (DNA-AuNPs) in the presence of polyethylene glycol (PEG), serving as an additive. Utilizing optical microscopy, UV-Vis spectroscopy, dynamic light scattering and small angle x-ray scattering, we observed enhanced crystal nucleation and growth facilitated by PEG. This effect is attributed to PEG's promotion of the overall crystallization process of DNA-AuNPs. Furthermore, we examined the influence of PEG on short-range interactions between DNA-AuNPs, where DNA binding occurs, and long-range interactions in colloidal solutions. The results suggest that PEG plays a crucial role in both promoting crystal nucleation and influencing the interactions between DNA-AuNPs at various distances, shedding light on its potential impact on DNA-AuNP crystal formation.

引用

页数：9

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