What we make
four families of materials, each synthesized to order
Gold nanoparticles
Gold nanospheres
monodisperse, 15–150 nm
- Concentration
- 10⁹–10¹¹ particles per mL
- Stabilizer
- CTAC, aqueous medium
- lead time
- 2 days
Gold nanoparticles
Gold nanostars
sharp tips, 50–250 nm
- Concentration
- about 10⁹ particles per mL
- Stabilizer
- sodium citrate, aqueous medium
- lead time
- 1 day
Gold nanoparticles
Gold nanorods
resonance at 850–1100 nm
- Resonance
- longitudinal, 850–1100 nm
- Concentration
- about 10⁹ particles per mL
- lead time
- 1 day
Gold nanoparticles
Gold nanocubes
well-defined facets, 30–80 nm
- Concentration
- about 10¹¹ particles per mL
- Stabilizer
- CTAB, aqueous medium
- lead time
- 2 days
Quantum dots
AgInS₂/ZnS quantum dots
emission at 550–750 nm
- Photoluminescence
- peak at 550–750 nm, width about 110 nm
- Quantum yield
- up to 25%
- lead time
- 1 day
Metal–organic frameworks
HKUST-1 (Cu-BTC)
surface area up to 2100 m²/g
- Surface area
- 1500–2100 m²/g
- Form
- blue microporous powder
- lead time
- on request
Metal–organic frameworks
ZIF-8
surface area 1300–1800 m²/g
- Surface area
- 1300–1800 m²/g (Langmuir)
- Crystal size
- from nano- to micro-fractions
- lead time
- on request
Metal–organic frameworks
UiO-66
stable over a wide pH range
- Surface area
- from 1000 m²/g
- Stability
- wide pH range, organic solvents
- lead time
- on request
Calcium carbonate
Calcium carbonate particles
vaterite, from 50 nm to 3 µm
- Phase
- at least 98% vaterite
- Form
- spherical micro- and nanoparticles
- lead time
- 2 days
Find a material for your task
choose an application area to see suitable materials
suitable materials
Particles with sharp tips and facets enhance the field and the Raman signal
Under the microscope
images of the center’s samples taken with electron microscopes
Every batch is quality checked
We check size, shape and optical properties with DLS, UV-Vis, SEM and TEM.
Fresh synthesis for every order
We do not keep materials in stock, we synthesize them for each specific request. Lead time starts at one day.
Parameters for your task
We tailor particle size and shape, stabilizer and surface chemistry to your specification.
Frequently asked questions
about ordering, lead times, pricing and storage
How do I order a material?
Write to us which material you need, in what quantity and for what task. We will clarify the parameters and lead time and reply by email. The minimum order depends on the product: colloidal solutions from 0.5 mL, quantum dots from 10 mg, calcium carbonate from 100 mg.
How much do the products cost?
The price depends on quantity, particle size and surface modification. We calculate it for each request and send it with our reply.
How long does production take?
Gold nanoparticles, quantum dots and calcium carbonate take 1–2 days. For metal–organic frameworks the lead time depends on quantity and the required modification, and we name it once the task is clear.
In what form are the materials supplied?
Gold nanoparticles and quantum dots are supplied as aqueous colloidal solutions with a stabilizer, metal–organic frameworks as powders. Concentration and stabilizer are listed on each product’s page.
Can the size or surface be changed?
Yes. We tailor particle size and shape, stabilizer and surface functionalization to your specification. For example, the plasmon resonance of nanorods, the emission peak of quantum dots, and the crystal size and surface chemistry of metal–organic frameworks can all be tuned.
How should the materials be stored?
Colloidal solutions are stored in a refrigerator. Nanospheres stay stable for more than 6 months, nanorods and nanocubes for at least a month. Nanostars tend to aggregate and are best used within 4 hours of synthesis. Storage conditions for each product are listed on its page.