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Melamine nanospheres and microspheres

with carboxy functional surfaces

 

The melamine nanospheres and microspheres have been modified to have a high density of carboxy functional groups. Melamine nanospheres and microspheres with carboxy group terminated surfaces are used for various conjugation reactions in biomedical research, biotechnology in development of variety of assays, microarray technology etc. Our melamine particles have the following properties:

  • COOH groups: 1mM/g

  • Density: 1.51 g/cm3

  • Refractive Index: 1.68

  • Highly spherical with C.V. <3 %

  • High temperature stability up to 250C

  • Excellent mechanical strength

  • Compatible with majority of inorganic and organic solvents

  • Low non-specific protein adsorption

  • Good colloidal stability over a wide range of pH values and ionic strength .

  • Available sizes: 500nm - 10m

 

Scanning Electron Microscopy image of 1.00um Melamine- microspheres with carboxy functional surfaces

 

 

Carboxy Functional Melamine Nanospheres

Size Range 50nm - 1000nm

Catalog #

Size, [nm]

Quantity Concentration

Product ID

Price, [USD]

360511-10 500 10ml 5% C-MF-0.50COOH

320.00

360513-10 550 10ml 5% C-MF-0.55COOH 275.00
360511-10 600 10ml 5% C-MF-0.60COOH 265.00
360513-10 650 10ml 5% C-MF-0.65COOH 250.00
360515-10 700 10ml 5% C-MF-0.70COOH 250.00
360517-10 750 10ml 5% C-MF-0.75COOH 245.00
360519-10 800 10ml 5% C-MF-0.80COOH 245.00
360521-10 850 10ml 5% C-MF-0.85COOH 235.00
360523-10 900 10ml 5% C-MF-0.90COOH 235.00
360525-10 950 10ml 5% C-MF-0.95COOH 230.00

 

Carboxy Functional Melamine Microspheres

Size Range 1m - 100m

Catalog #

Size, [m]

Quantity Concentration

Product ID

Price, [USD]

360611-10

1.00

10ml 5%

C-MF-1.00COOH

230.00
360613-10

1.25

10ml 5%

C-MF-1.25COOH

230.00
360611-10

1.50

10ml 5%

C-MF-1.50COOH

210.00
360613-10

1.75

10ml 5%

C-MF-1.75COOH

200.00
360615-10

2.00

10ml 5%

C-MF-2.00COOH

190.00
360617-10

2.25

10ml 5%

C-MF-2.25COOH

190.00
360619-10

2.50

10ml 5%

C-MF-2.50COOH

185.00
360621-10

3.00

10ml 5%

C-MF-3.00COOH

185.00
360623-10

3.50

10ml 5%

C-MF-3.50COOH

180.00
360625-10

4.00

10ml 5%

C-MF-4.00COOH

185.00
360627-10

4.50

10ml 5%

C-MF-4.50COOH

200.00
360629-10

5.00

10ml 5% C-MF-5.00COOH 215.00
360631-10

6.00

10ml 5% C-MF-6.00COOH 220.00
360635-10

7.00

10ml 5% C-MF-7.00COOH 230.00
360637-10

8.00

10ml 5% C-MF-8.00COOH 240.00
360639-10

9.00

10ml 5% C-MF-9.00COOH 245.00
360641-10

10.00

10ml 5% C-MF-10.00COOH 250.00

 

Useful data 1

Assumptions:

(a) all particles are perfect spheres,

(b) molecular level smooth surfaces and

(c) one functional group per nm2 surface  (from structural data

Diameter,  [nm] Mass of one particle, [g] Number of particles/g Number of  COOH groups/particle Number of  COOH groups/g COOH groups, μmoles/g
500 9.8829E-14 1.01E+13 7.85E+05 7.95E+18 13.20
550 1.3154E-13 7.60E+12 9.50E+05 7.22E+18 12.00
600 1.7078E-13 5.86E+12 1.13E+06 6.62E+18 11.00
650 2.1713E-13 4.61E+12 1.33E+06 6.11E+18 10.15
700 2.7119E-13 3.69E+12 1.54E+06 5.68E+18 9.43
750 3.3355E-13 3.00E+12 1.77E+06 5.30E+18 8.80
800 4.0480E-13 2.47E+12 2.01E+06 4.97E+18 8.25
850 4.8555E-13 2.06E+12 2.27E+06 4.67E+18 7.77
900 5.7637E-13 1.73E+12 2.54E+06 4.42E+18 7.33
950 6.7787E-13 1.48E+12 2.84E+06 4.18E+18 6.95
1000 7.9063E-13 1.26E+12 3.14E+06 3.97E+18 6.60
1250 1.5442E-12 6.48E+11 4.91E+06 3.18E+18 5.28
1500 2.6684E-12 3.75E+11 7.07E+06 2.65E+18 4.40
1750 4.2373E-12 2.36E+11 9.62E+06 2.27E+18 3.77
2000 6.3251E-12 1.58E+11 1.26E+07 1.99E+18 3.30
2250 9.0058E-12 1.11E+11 1.59E+07 1.77E+18 2.93
2500 1.2354E-11 8.09E+10 1.96E+07 1.59E+18 2.64
3000 2.1347E-11 4.68E+10 2.83E+07 1.32E+18 2.20
3500 3.3898E-11 2.95E+10 3.85E+07 1.14E+18 1.89
4000 5.0601E-11 1.98E+10 5.03E+07 9.93E+17 1.65
4500 7.2047E-11 1.39E+10 6.36E+07 8.83E+17 1.47
5000 9.8829E-11 1.01E+10 7.85E+07 7.95E+17 1.32
6000 1.7078E-10 5.86E+09 1.13E+08 6.62E+17 1.10
7000 2.7119E-10 3.69E+09 1.54E+08 5.68E+17 0.94
8000 4.0480E-10 2.47E+09 2.01E+08 4.97E+17 0.83
9000 5.7637E-10 1.73E+09 2.54E+08 4.42E+17 0.73
10000 7.9063E-10 1.26E+09 3.14E+08 3.97E+17 0.66

 

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polystyrene, melamine ,PMMA, polylactide, dextran, flow cytometry, size standards, gold, silver, silica, alumina, titania, glass, magnetic, fluorescent, microspheres and nanospheres with plain, functionalzed surfaces

(plain, amino, carboxyl, avidin, biotin, streptavidin, antibody)

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