Three-dimensional nanoparticle assemblies with tunable plasmonics via a layer-by-layer process

Publication date: Available online 19 December 2019Source: Nano TodayAuthor(s): Thomas L. Derrien, Shogo Hamada, Max Zhou, Detlef-M. Smilgies, Dan LuoAbstractRecently, DNA has emerged as a designer material for the controlled assembly of nanoparticles. The unique programmability of Watson-Crick base pairing offers limitless control over assembly via specific interactions. At the same time, reliance on non-specific interactions, such as layer-by-layer (LbL) assembly offers a simple assembly method, albeit with limited control. Here, by assembling DNA-capped gold nanoparticles in a LbL fashion we combine these two approaches and present a simple and robust method to construct large-scale three-dimensional nanoparticle assemblies with readily tunable plasmonics. Through variation of the DNA ligand and the nanoparticle core size the morphology of the three-dimensional nanoparticle assemblies was carefully adjusted. These morphological changes, confirmed using grazing incidence x-ray scattering, enabled the tuning of the plasmonic behavior of the three-dimensional nanoparticle assemblies. The morphology could also be modified in real-time through water vapor induced swelling enabling dynamic tuning of the optical properties. The introduction of the DNA ligand to the LbL assembly method presented here imparted tunability to the process previously inaccessible with other nanoparticle ligands and presents a platform with which to create optically active materials of various compositi...
Source: Nano Today - Category: Nanotechnology Source Type: research

Related Links:

Authors: PMID: 32638644 [PubMed - in process]
Source: Praxis der Kinderpsychologie und Kinderpsychiatrie - Category: Child Development Tags: Prax Kinderpsychol Kinderpsychiatr Source Type: research
Authors: PMID: 32638643 [PubMed - in process]
Source: Praxis der Kinderpsychologie und Kinderpsychiatrie - Category: Child Development Tags: Prax Kinderpsychol Kinderpsychiatr Source Type: research
Authors: PMID: 32638642 [PubMed - in process]
Source: Praxis der Kinderpsychologie und Kinderpsychiatrie - Category: Child Development Tags: Prax Kinderpsychol Kinderpsychiatr Source Type: research
Publication date: Available online 8 July 2020Source: European Journal of Integrative MedicineAuthor(s): Stephen Birch, Myeong Soo Lee
Source: European Journal of Integrative Medicine - Category: Complementary Medicine Source Type: research
Publication date: September 2020Source: American Heart Journal, Volume 227Author(s): Payam Dehghani, Laura J. Davidson, Cindy L. Grines, Keshav Nayak, Jacqueline Saw, Prashant Kaul, Akshay Bagai, Ross Garberich, Christian Schmidt, Hung Q. Ly, Jay Giri, Perwaiz Meraj, Binita Shah, Santiago Garcia, Scott Sharkey, David A. Wood, Frederick G. Welt, Ehtisham Mahmud, Timothy D. Henry
Source: American Heart Journal - Category: Cardiology Source Type: research
Publication date: Available online 9 July 2020Source: American Heart JournalAuthor(s): Yi Li, Quanmin Jing, Bing wang, Xiaozeng Wang, Jing Li, Shubing Qiao, Shaoliang Chen, Dominick J. Angiolillo, Yaling Han
Source: American Heart Journal - Category: Cardiology Source Type: research
The original version of this article unfortunately contained a mistake. The correct information is given below.
Source: Cancer Immunology, Immunotherapy - Category: Cancer & Oncology Source Type: research
The original version of this article unfortunately contained a mistake. Complete figure captions are missing.
Source: Cancer Immunology, Immunotherapy - Category: Cancer & Oncology Source Type: research
Conclusions: The food safety conditions and the quality of ice cubes at manufacturing premises in Binh Phuoc Province were not acceptable. Hygiene deficiencies in ice producing and handling processes, inadequate knowledge of staff, inadequate food safety management practices, and hygiene conditions of the premises were important factors in producing contaminated ice products. We recommend more staff training and crediting the staff when performing adequate practices, paying attention to broken floors or difficulty in cleaning, structural deficiency, and ensuring regular monitoring of premises. This study adds a special int...
Source: Environmental Health Insights - Category: Environmental Health Authors: Tags: Environ Health Insights Source Type: research
Authors: Robb CM, Kour S, Contreras JI, Agarwal E, Barger CJ, Rana S, Sonawane Y, Neilsen BK, Taylor M, Kizhake S, Thakare RN, Chowdhury S, Wang J, Black JD, Hollingsworth MA, Brattain MG, Natarajan A Abstract [This corrects the article DOI: 10.18632/oncotarget.23749.]. PMID: 32637035 [PubMed - in process]
Source: Oncotarget - Category: Cancer & Oncology Tags: Oncotarget Source Type: research
More News: Nanotechnology