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.
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收藏
页数：9
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