Frequently Asked Questions

What are the surface ligands on our nanoparticles?

CdS: Oleic acid, CdSe and CdSe/ZnS: Octadecylamine (ODA), CdSe/ZnS (water soluble): Carboxylic acid, Fe3O4 in toluene and powder: Oleic acid, Fe3O4 (water soluble): Modified PEG (polyethylene glycol), CIS: Oleic acid & Oleylamine, CIS (water soluble): Carboxylic acid, InP/ZnS: Oleylamine, InP/ZnS (water soluble): Carboxylic acid, Md:ZnSe: 600nm Oleylamine & 620nm Oleic acid, Mn:ZnSe (water soluble): Carboxylic acid, Gold: Citrate

What is the size range of our nanoparticles? (With & without ligands)

CdS: 2-5.5nm, CdSe: 2-6.5nm, CdSe/ZnS: 5.5-9.5nm, CdSe/ZnS (water soluble): 4-10nm, Fe3O4: 5, 10, 15, 20nm, Fe3O4 (water soluble): 5, 10, 20nm, Fe3O4 (powder): 5, 10, 20nm, CIS: 4-6.6nm, CIS (water soluble): 4-6.6nm, InP/ZnS: 4-6nm, InP/ZnS (water soluble): 4-6nm, Mn:ZnSe: 5-6nm, Mn:ZnSe (water soluble): 5-6nm, Gold: 5, 10, 20nm. Ligand coverage adds approximately 1-2nm.

How stable are the nanoparticles in and out of solution?

Most of our nanoparticles are stable for approximately 6 months to 1 year if stored properly. Please see our technical specifications and/or MSDS for more information. These can be found in the product catalog after clicking on the specific product you are interested in.

What is the concentration of a typical sample?

For inorganic solvent, the concentration depends on the amount ordered unless other concentration is specified. 5mg (1mg/mL), 10mg (2mg/mL), higher amounts 25+mg (5mg/mL). Water soluble products are 1mg/mL unless specified otherwise. High concentration is also available as a custom order.

Can NN-Labs customize the concentration or solvent of a sample?

Yes, as long as the concentration is feasible and the solvent is capable of dissolving the nanocrystals and is available. Toluene soluble products can be provided in other organic solvents. Hexanes and chloroform can be substituted for no extra charge; other organic solvents can be discussed as a custom order. Our water soluble products can be modified to be soluble in some alcohols.

Does NN-Labs sell nanopowders?

Iron oxide is the only product offered in powder form. The availability of other products can be discussed as a custom order on a case by case basis.

What is the policy for custom orders?

We specialize in custom orders! Please call or email us with your request.

Does NN-Labs offer nanoparticles in UV-curable polymer?

Yes, as a custom order. Please email or call us with your request.

How do I place an order?

Online through our Product Catalog page. We currently do not accept credit cards online. Once the order is placed and a copy is received, a quote will be sent to the customer within 24 hours M-F. The customer can then call, email, or fax the credit card information. We also accept purchase orders.

What payment methods can be used?

Visa, MasterCard, Discover, and American Express can all be accepted. Purchase orders are also accepted. Wire transfers are available for our international customers.

What is NN-Labs shipping policy?

Items in stock ship within 1-2 business days via FedEx 2-day air. FedEx next day delivery is available upon request for an additional charge. For items not in stock the time frame varies depending on the product. Standard wait time is usually 2-3 weeks.

Does NN-Labs keep products in stock or are they made per order?

A small inventory of most products is kept in stock. Custom orders are not kept in stock and usually have a 2-3 week lead time.