Grove Gold-L-Cysteine Fluorescent Red ~4 nm
per 10 mL at OD 1 · ex VAT
UK orders: 20% VAT is added at checkout. UK delivery is free.
Volume discount · mix any Grove Nanomaterials colloids
| Packs | Discount | Each, ex VAT |
|---|---|---|
| 2–4 | £25 off each | £174.50 |
| 5–9 | £40 off each | £159.50 |
| 10 or more | £50 off each | £149.50 |
Every 10 mL pack in the basket counts, in any mix, and the discount is applied automatically. Or try all four in the starter set, £599.
- Typically ships in 2–4 weeks, with tracking. We confirm the date after you order.
- 10 mL packs only for now. More than one pack may take longer to ship, and each comes from a different batch.
- Pay by card, including university purchasing cards, or by invoice with a purchase order: we email a pro forma invoice with the terms. How ordering works
- For organisations only: we supply universities, research institutes and companies.
- Need a quotation? Add what you need to the basket and request it there. We email it as a PDF.
- Safety data sheet (PDF) for Grove Gold-L-Cysteine Fluorescent Red ~4 nm, opens in a new tab
For research use only.
Specifications
From Grove Nanomaterials' product data and safety data sheet.
- Diameter
- ~4 nm
- Ligand
- L-cysteine
- Solvent
- Water
- Solution colour
- Milky white
- Absorption peak
- ~370 nm
- Emission peak
- ~645 nm
- Pack
- 10 mL at OD 1 (10 OD·mL)
- Storage
- Store at 2–8 °C. Do not freeze.
- Hazard classification
- Not classified as hazardous under GHSGrove Nanomaterials safety data sheet, version 1.0, revised 14 Aug 2026
- Transport
- Not regulated as dangerous goods for road, sea, air (IATA) or US DOT transport
- Manufacturer
- Grove Nanomaterials
- SKU
- GROVE-LCYS-RED-10ML-OD1
Example characterisation
Example data supplied by Grove Nanomaterials. Batch-to-batch variation is expected; ask for data on your batch when you order. Colloid guide
Description
Gold nanoparticles (~4 nm) capped with L-cysteine, dispersed in water. The absorption peak is in the near ultraviolet at ~370 nm and the red emission peak is at ~645 nm, ~275 nm apart, so a long-pass filter that rejects your UV excitation and transmits the emission band separates the emission cleanly. The colloid looks milky white in ordinary light and glows red under a UV lamp.
L-cysteine binds to gold through sulfur, leaving carboxyl and amine groups available; EDC/NHS activates the carboxyl groups for coupling to primary amines. Because the surface also carries amines, activated particles can link to each other, so work at a low particle concentration and remove excess EDC before adding your protein. Grove lists fluorescent sensing, optical assays and biointerfaces as research uses.
Production: Grove colloids are made by physical deposition of metallic gold in the presence of the stabilising ligand, then dispersed in water. No gold salts, chemical reducing agents, CTAB or CTAC are used.
Documents
- Safety data sheetPDF · version 1.0, revised 14 Aug 2026 Download Grove Gold-L-Cysteine Fluorescent Red ~4 nm safety data sheet (PDF, opens in a new tab)
Need a value that isn't listed here, or data for your batch? Email info@marixia.co.uk and we'll ask Grove Nanomaterials.
