Navigation Links
Study improves understanding of surface molecules in controlling size of gold nanoparticles
Date:6/18/2012

North Carolina State University researchers have shown that the "bulkiness" of molecules commonly used in the creation of gold nanoparticles actually dictates the size of the nanoparticles with larger so-called ligands resulting in smaller nanoparticles. The research team also found that each type of ligand produces nanoparticles in a particular array of discrete sizes.

"This work advances our understanding of nanoparticle formation, and gives us a new tool for controlling the size and characteristics of gold nanoparticles," says Dr. Joseph Tracy, an assistant professor of materials science and engineering at NC State and co-author of a paper describing the research. Gold nanoparticles are used in industrial chemical processes, as well as medical and electronics applications.

When creating gold nanoparticles, scientists often use organic molecules called ligands to facilitate the process. The ligands effectively bring gold atoms together in a solution to create the nanoparticles. In the process, ligands essentially line up side by side and surround the nanoparticles in all three dimensions.

The researchers wanted to see whether the bulkiness of the ligands affected nanoparticle size, and opted to assess three types of thiol ligands a family of ligands commonly used to synthesize gold nanoparticles. Specifically, the molecules bound to the gold nanoparticles are linear hexanethiolate (-SC6), cyclohexanethiolate (-SCy) and 1-adamantanethiolate (-SAd). Each of these ligands has a bulkier configuration than the last.

For example, picture each ligand as a slice of pie, with a gold atom attached to the pointed end. -SC6 looks like a very narrow slice of pie. -SCy is slightly larger, and -SAd is the largest of the three with the "crust" end of the pie wedge far wider than the pointed end.

The researchers found that the bulkiness of the ligands determined the size of the nanoparticles. Because fewer -SAd and -SCy ligands
'/>"/>

Contact: Matt Shipman
matt_shipman@ncsu.edu
919-515-6386
North Carolina State University
Source:Eurekalert  

Page: 1 2

Related biology technology :

1. Positive Clinical Study Results for BSPs HyperQ Technology
2. 15-Minute Data From Phase 3 Study of Avanafil Featured as a Late Breaking Abstract at SMSNA Annual Meeting
3. DermTechs Non-invasive Melanoma Detection Assay Poised to Enter Clinical Validation Study
4. Marshall study shows nanoparticles used as additives in diesel fuels can travel from lungs to liver
5. Clionsky Neuro Systems (CNS-Neuro) Announces Publication of Study Finding Elderly Patients Unable to Recognize Their Memory Loss
6. Convergence Pharmaceuticals Initiates Phase I Multiple Ascending Dose Study for CNV2197944
7. AtheroNova Inc. Preclinical Study Demonstrates 95% Reduction in Arterial Plaque Formation
8. Singapore scientists lead human embryonic stem cell study
9. GeneTex Antibody Company to Launch New Line of Primary Antibodies for the Study of Spindle Assembly
10. Nutra Pharma Announces Publication of a New Mechanism Study of Alpha-Cobratoxin in the Treatment of Pain
11. Metabolex Announces Positive Results From its Clinical Study of Arhalofenate in Combination With Febuxostat
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Study improves understanding of surface molecules in controlling size of gold nanoparticles
(Date:3/3/2015)... , March 3, 2015 /PRNewswire/ - BIOREM Inc. (TSXV: BRM) ("Biorem" ...  The orders are for odour control projects in North ... Asia . "Bidding activity in 2015 ... and CEO. "After a high volume year for bidding in 2014, ... New Year.  The recent orders reflect the organization,s renewed focus on ...
(Date:3/3/2015)... 3, 2015  Neurocrine Biosciences, Inc. (Nasdaq: ... President and Chief Executive Officer of Neurocrine Biosciences, will ... Miami.   The live presentation takes place ... The presentation will be webcast and may be accessed ... Listeners are encouraged to visit the website ...
(Date:3/3/2015)... , March 3, 2015 Adaptive Biotechnologies ... CFO, is joining its Board of Director as Chair ... officer at Zillow Group, Chad oversees all finance, treasury ... built the company,s core finance, treasury and accounting functions, ... and nine acquisitions. In 2013, he was named Puget ...
(Date:3/3/2015)... (PRWEB) March 03, 2015 Crown Bioscience, ... company, has launched a new Life Science division specializing ... preclinical research. , The first products released include ... controls, and soon to be released in vivo grade ... continue to expand their life science portfolio with additional ...
Breaking Biology Technology:Adaptive Biotechnologies adds Chad Cohen, Zillow Group CFO, to Board of Directors 2Crown Bioscience Launches Life Science Product Catalog 2
... Nov. 13 Savient,Pharmaceuticals, Inc. (Nasdaq: SVNT ) ... of Savient Pharmaceuticals,will present a corporate update at the ... presentation is scheduled to begin on Tuesday, November 18, ... at the St. Regis Hotel in New,York City November ...
... Md., Nov. 13 PharmAthene, Inc.,(NYSE Alternext US: ... and chemical threats, today reported,financial and operational results ... 30, 2008., For the third quarter of ... $3.4 million in the same period of 2007. ...
... Biomaterial that Stops Bleeding Wins Professor Venture Fair at,U-Md. ... A University of,Maryland professor and doctoral student team who ... attention of a group of venture,capitalists and the title ... Nov. 12., Sponsored by the university,s Office of ...
Cached Biology Technology:Savient Pharmaceuticals to Present at the Lazard Capital Markets 5th Annual Healthcare Conference on November 18th 2Pharmathene Reports Third Quarter 2008 Financial and Operational Results 2Pharmathene Reports Third Quarter 2008 Financial and Operational Results 3Pharmathene Reports Third Quarter 2008 Financial and Operational Results 4Pharmathene Reports Third Quarter 2008 Financial and Operational Results 5Pharmathene Reports Third Quarter 2008 Financial and Operational Results 6Pharmathene Reports Third Quarter 2008 Financial and Operational Results 7Nano-Velcro Sticks With Venture Capitalists 2Nano-Velcro Sticks With Venture Capitalists 3
(Date:2/5/2015)... -- New Market Research Reports Title Global ... 2020 has Been Added to GrandViewReseach.com Report Database ... reach USD 5.10 billion by 2020, according to a ... help identify the site of tissue damage in case ... in medical imaging applications. They have been extensively used ...
(Date:1/22/2015)... 2015 Research and Markets ( http://www.researchandmarkets.com/research/4trb7t/biometrics_a ) has ... Market Overview" report to their offering. , ... that an individual is who she/he is claiming to be, ... a person,s unique physical characteristics, such as fingerprint, hand or ...
(Date:1/22/2015)...  BellBrook Labs, a leader in high throughput screening ... a TR-FRET (time resolved Forster resonance energy transfer) ... high throughput screening assay for glycosyltransferases and other ... sensitive detection of hundreds of human and microbial ...
Breaking Biology News(10 mins):IR Camera Market Worth $5.10 Billion By 2020: Grand View Research, Inc. 2IR Camera Market Worth $5.10 Billion By 2020: Grand View Research, Inc. 3Biometrics - A Global Market Overview 2Biometrics - A Global Market Overview 3BellBrook Labs Launches a High Throughput Screening Assay for Glycosyltransferases with TR-FRET Readout 2
... -- The Damon Runyon Cancer Research Foundation, a ... researchers and innovative cancer research, named 18 new ... Committee review. The recipients of this prestigious, ... and translational cancer research in the laboratories of ...
... discovered a dramatic increase of an easy-to-detect enzyme in the ... Hopkins scientists say the discovery could lead to a simple, ... before symptoms or complications occur and in time to reverse ... Diabetes , show the enzyme O-GlcNAcase is up to ...
... Researchers from Mount Sinai School of Medicine have identified a ... process by which information from a gene is used to ... which may help scientists gain insight into how muscle and ... of Nature . Using a combined approach of ...
Cached Biology News:Damon Runyon Cancer Research Foundation awards prestigious fellowships to 18 top young scientists 2Damon Runyon Cancer Research Foundation awards prestigious fellowships to 18 top young scientists 3Damon Runyon Cancer Research Foundation awards prestigious fellowships to 18 top young scientists 4Damon Runyon Cancer Research Foundation awards prestigious fellowships to 18 top young scientists 5Damon Runyon Cancer Research Foundation awards prestigious fellowships to 18 top young scientists 6Hopkins team discovers sweet way to detect prediabetes 2Mount Sinai researchers discover new way diseases develop 2
... biologic production demands on cell and tissue ... cell populations. Therefore, both cell concentration and ... accurately and precisely. The new Vi-CELLTM Cell ... effective means to perform the trypan blue ...
... modification that plays an important role ... inflammation, cell-to-cell adhesion, and cell signaling. ... based Glycoprotein Isolation Kits, Concanavalin A ... that allow isolation of glycoproteins from ...
... SureLINK Bioconjugation Kit provides a powerful yet ... and nuceleic acids. The kit provides the ... reagents for quantifying conjugation efficiencies. It enables ... biotin and other tags with a variety ...
... The LS series of laser scanners is ... Expression Suite solution. ,Gene expression analysis, ... requirements essential to the advancement of ... rise to novel microarray formats and sizes. ...
Biology Products: