Intrinsic SERS - Nanopartz™

Intrinsic SERS (iSERS) utilizes Nanopartz Accurate Spherical Gold Nanoparticles  and Gold Nanorods to enhance the Raman signals of analytes in solutions and solvents. Nanopartz tailer fit their gold nanoparticles for your application. Their SERS nanoparticles are designed to optimize Raman scattering cross sections with laser excitations 500nm to 2microns utilizing Spherical Gold and Gold Nanorods. Surface preparations can withstand user solutions of highly saline solutions including PBS, to organic solvent solutions as Toluene.

This product comes highly concentrated in 1mL vials, ready for dilution of the solvent of your choice. Every batch is completely characterized including size, monodispersity, aggregation, residual chemicals, and concentration. A Certificate of Analysis (COA) is provided for every order exhibiting TEM and UV-VIS images and data, as well as DLS data.

Gold Nanoparticles in organic solvents

Nanopartz Intrinsic SERS Nanoparticles can work in a wide variety of solutions and solvent


Solution/Solvent
iSERS
DI Water Yes
PBS
Yes
Saline
Yes
Effluent
Yes
Serum
Yes
Ethanol
Yes
Methanol
Yes
Isopropanol
Yes
Acetone
Yes
DMSO
Yes
DMF
Yes
Acetonitrile
Yes
Toluene
Yes

Part #
Diameter (nm)
Peak SPR Wavelength (nm)
NPS/ml
Molarity (pM)
Moles
Molar Ext. (M-1cm-1)
Absorption Molar Ext. (M-1cm-1)
Scattering Molar Ext. (M-1cm-1)
Size Dispersity %PDI
Size Accuracy (+/- nm)
PIS11-1.8
1.8
500
4.25E+16
7.10E+07
7.09E-08
7.05E+05
7.05E+05
0.00E+00
<35%
0.1
PIS11-2.2
2.2
502
2.33E+16
3.90E+07
3.88E-08
1.29E+06
1.29E+06
0.00E+00
<25%
0.1
PIS11-3
3
506
9.19E+15
1.50E+07
1.53E-08
3.26E+06
3.26E+06
0.00E+00
<20%
0.1
PIS11-4
4
510
3.88E+15
6.50E+06
6.46E-09
7.74E+06
7.74E+06
0.00E+00
<20%
1
PIS11-5
5
512
1.99E+15
3.30E+06
3.31E-09
1.51E+07
1.51E+07
0.00E+00
<20%
2
PIS11-10
10
516
2.48E+14
4.10E+05
4.14E-10
1.21E+08
1.21E+08
0.00E+00
<15%
2
PIS11-15
15
518
7.35E+13
1.20E+05
1.23E-10
4.08E+08
4.08E+08
0.00E+00
<15%
2
PIS11-20
20
520
3.10E+13
5.20E+04
5.17E-11
9.67E+08
9.67E+08
0.00E+00
<10%
2
PIS11-25
25
521
1.59E+13
2.60E+04
2.65E-11
1.89E+09
1.89E+09
0.00E+00
<10%
2
PIS11-30
30
523
9.19E+12
1.50E+04
1.53E-11
3.26E+09
3.26E+09
0.00E+00
<6%
2
PIS11-35
35
526
5.79E+12
9.60E+03
9.65E-12
5.18E+09
5.18E+09
0.00E+00
<6%
2
PIS11-40
40
527
3.88E+12
6.50E+03
6.46E-12
7.74E+09
7.72E+09
2.24E+07
<4%
2
PIS11-45
45
529
2.72E+12
4.50E+03
4.54E-12
1.10E+10
1.08E+10
2.03E+08
<4%
2
PIS11-50
50
531
1.99E+12
3.30E+03
3.31E-12
1.51E+10
1.45E+10
5.88E+08
<4%
2
PIS11-55
55
533
1.49E+12
2.50E+03
2.49E-12
2.01E+10
1.88E+10
1.30E+09
<4%
2
PIS11-60
60
536
1.15E+12
1.90E+03
1.91E-12
2.61E+10
2.36E+10
2.48E+09
<4%
2
PIS11-65
65
539
9.04E+11
1.50E+03
1.51E-12
3.32E+10
2.89E+10
4.33E+09
<4%
2
PIS11-70
70
542
7.23E+11
1.20E+03
1.21E-12
4.15E+10
3.44E+10
7.09E+09
<4%
2
PIS11-75
75
545
5.88E+11
9.80E+02
9.80E-13
5.10E+10
4.00E+10
1.10E+10
<4%
2
PIS11-80
80
549
4.85E+11
8.10E+02
8.08E-13
6.19E+10
4.54E+10
1.65E+10
<4%
2
PIS11-85
85
553
4.04E+11
6.70E+02
6.73E-13
7.42E+10
5.03E+10
2.39E+10
<4%
2
PIS11-90
90
558
3.40E+11
5.70E+02
5.67E-13
8.81E+10
5.44E+10
3.37E+10
<4%
2
PIS11-95
95
563
2.89E+11
4.80E+02
4.82E-13
1.04E+11
5.72E+10
4.65E+10
<4%
2
PIS11-100
100
569
2.48E+11
4.10E+02
4.14E-13
1.21E+11
5.82E+10
6.27E+10
<4%
2
PIS11-150
150
612
7.35E+10
1.20E+02
1.23E-13
4.08E+11
0.00E+00
4.08E+11
<4%
10

 

%PDI = Std Dev/Size
See Tech Note TN801 for definition of terms and method of analysis
All specs typical. May vary batch to batch. Exact values are measured for each batch
Shape monodispersity (% spheres) > 99.9%
Residual Chemicals < 0.1%

 

 

Part #
Diameter (nm)
Length (nm)
Peak SPR Wave (nm)
Aspect Ratio
OD SPR (AU)
Peak LSPR Wave (nm)
OD LSPR (AU)
NPS /mL
Wt. conc (ug/ml)
Wt. %
PPM
Molarity (nM)
Picomoles
SPR Molar Ext. (M-1cm-1)
LSPR Molar Ext. (M-1cm-1)

Peak SPR

(nm)

SPR Linewidth 80% (nm)
PIS-2100
10
175
2100
17.5
50
510
10
6.73E+12
1750
0.18%
1750
11.21
1.12E+01
4.46E+09
8.92E+08
1900-2300
300
PIS-1400
25
245
1400
9.8
50
514
15
1.12E+12
2500
0.25%
2500
1.86
1.86E+00
2.69E+10
8.06E+09
1232-1500
150
PIS-1064
25
137
1064
5.5
50
514
15
2.05E+12
2500
0.25%
2500
3.42
3.42E+00
1.46E+10
4.38E+09
1022-1232
150
PIS-980
25
119
980
4.8
50
514
15
2.39E+12
2500
0.25%
2500
3.98
3.98E+00
1.26E+10
3.77E+09
965-1022
150
PIS-950
25
102
950
4.1
50
514
15
2.82E+12
2500
0.25%
2500
4.7
4.70E+00
1.06E+10
3.19E+09
925-965
150
PIS-900
25
96
900
3.8
50
514
15
3.01E+12
2500
0.25%
2500
5.02
5.02E+00
9.95E+09
2.99E+09
875-925
150
E12-25-850
25
93
850
3.7
50
514
15
3.12E+12
2500
0.25%
2500
5.2
5.20E+00
9.61E+09
2.88E+09
829-875
150
E12-25-808
25
90
808
3.6
50
514
15
3.24E+12
2500
0.25%
2500
5.39
5.39E+00
9.27E+09
2.78E+09
794-829
150
E12-25-780
25
87
780
3.5
50
514
15
3.36E+12
2500
0.25%
2500
5.6
5.60E+00
8.93E+09
2.68E+09
765-794
150
E12-25-750
25
85
750
3.4
50
514
15
3.45E+12
2500
0.25%
2500
5.75
5.75E+00
8.70E+09
2.61E+09
725-765
65
E12-25-700
25
75
700
3
50
514
15
3.96E+12
2500
0.25%
2500
6.61
6.61E+00
7.57E+09
2.27E+09
675-725
60
E12-25-650
25
71
650
2.8
50
514
15
4.22E+12
2500
0.25%
2500
7.03
7.03E+00
7.11E+09
2.13E+09
625-675
60
E12-25-600
25
57
600
2.3
50
514
15
5.43E+12
2500
0.25%
2500
9.05
9.05E+00
5.52E+09
1.66E+09
575-625
60
E12-25-550
25
34
550
1.4
50
514
15
1.01E+13
2500
0.25%
2500
16.91
1.69E+01
2.96E+09
8.87E+08
525-575
60
E12-40-1064
40
208
850
5.2
50
520
20
5.30E+11
2500
0.25%
2500
0.88
8.84E-01
5.66E+10
2.26E+10
1022-1232
150
E12-40-980
40
180
850
4.5
50
520
20
6.19E+11
2500
0.25%
2500
1.03
1.03E+00
4.84E+10
1.94E+10
875-1022
150
E12-40-850
40
148
850
3.7
50
520
20
7.67E+11
2500
0.25%
2500
1.28
1.28E+00
3.91E+10
1.57E+10
829-875
150
E12-40-808
40
134
808
3.4
50
520
20
8.56E+11
2500
0.25%
2500
1.43
1.43E+00
3.51E+10
1.40E+10
794-829
150
E12-40-780
40
124
780
3.1
50
520
20
9.33E+11
2500
0.25%
2500
1.55
1.55E+00
3.22E+10
1.29E+10
765-794
150
E12-40-750
40
112
750
2.8
50
520
20
1.05E+12
2500
0.25%
2500
1.74
1.74E+00
2.87E+10
1.15E+10
725-765
150
E12-40-700
40
92
700
2.3
50
520
20
1.31E+12
2500
0.25%
2500
2.19
2.19E+00
2.29E+10
9.14E+09
675-725
60
E12-40-650
40
80
650
2
50
520
20
1.55E+12
2500
0.25%
2500
2.58
2.58E+00
1.94E+10
7.75E+09
625-675
60
E12-40-600
40
68
600
1.7
50
520
20
1.89E+12
2500
0.25%
2500
3.15
3.15E+00
1.59E+10
6.35E+09
575-625
60
E12-40-550
40
60
550
1.5
50
520
20
2.21E+12
2500
0.25%
2500
3.69
3.69E+00
1.36E+10
5.42E+09
525-575
60
E12-50-1064
50
245
1064
4.9
50
530
25
2.89E+11
2500
0.25%
2500
0.48
4.82E-01
1.04E+11
5.18E+10
980-1232
150
E12-50-808
50
145
808
2.9
50
530
25
5.15E+11
2500
0.25%
2500
0.86
8.58E-01
5.83E+10
2.91E+10
750-850
150
E12-50-700
50
110
700
2.2
50
530
25
7.08E+11
2500
0.25%
2500
1.18
1.18E+00
4.24E+10
2.12E+10
650-750
150
E12-50-600
50
100
600
2
50
530
25
7.93E+11
2500
0.25%
2500
1.32
1.32E+00
3.78E+10
1.89E+10
550-650
150
E12-70-750
70
120
750
1.7
50
530
25
3.49E+11
2500
0.25%
2500
0.58
5.81E-01
8.60E+10
4.30E+10
700-800
150
E12-70-650
70
105
650
1.5
50
530
25
4.13E+11
2500
0.25%
2500
0.69
6.88E-01
7.27E+10
3.63E+10
600-700
150
E12-70-550
70
91
550
1.3
50
530
25
4.98E+11
2500
0.25%
2500
0.83
8.30E-01
6.02E+10
3.01E+10
500-600
150

 

Optical Density >= 200, volume = 0.25mL
Specs shown in table are for dilution at 1mL
Solution default is 18MEG DI water
Residual Chemicals < 0.1%

 

 

 

Part #
Diameter (nm)
Length (nm)
Aspect Ratio
Peak SPR Wave (nm)
SPR OD (1cm)
Microgold /mL
moles
Wt. conc (ug/ml)
Wt. %
PPM
Molarity (pM)
SPR Molar Ext. (M-1cm-1)
E13-500
75
500
6.7
510
0.25
6.18E+09
1.03E-14
250
0.03%
250
10.3
2.43E+07
E13-1000
100
1000
10
510
0.25
1.71E+09
2.85E-15
250
0.03%
250
2.85
8.78E+07

 

Specs are for product diluted to 1mL, product comes 0.25mg in 0.25mL
SPR = Transverse SPR peak
Longitudinal has no SPR peak
Shape monodispersity (% rods) > 95%
Size variation +/-10% (both dimensions)

 

 

Part #
Diameter (nm)
Length (nm)
Aspect Ratio
Peak SPR Wave (nm)
Nanowires Vol (nm3)
Nanowires /mL
Wt. conc (ug/ml)
Wt. %
PPM
Molarity (pM)
SPR Molar Ext. (M-1cm-1)
E14-1000
75
1000
13
510
4.31E+06
3.01E+09
250
0.03%
250
5.02
9.96E+06
E14-2000
75
2000
27
510
8.72E+06
1.49E+09
250
0.03%
250
2.48
2.02E+07
E14-4000
75
4000
53
510
1.76E+07
7.39E+08
250
0.03%
250
1.23
4.06E+07
E14-6000
75
6000
80
510
2.64E+07
4.91E+08
250
0.03%
250
0.82
6.10E+07
E14-10000
75
10000
133
510
4.40E+07
2.94E+08
250
0.03%
250
0.49
1.02E+08
E14-20000
100
20000
200
510
1.57E+08
8.27E+07
250
0.03%
250
0.14
3.63E+08
E14-40000
140
40000
286
510
6.15E+08
2.11E+07
250
0.03%
250
0.04
1.42E+09

 

Specs are for product diluted to 1mL, product comes 0.25mg in 0.25mL
SPR = Transverse SPR peak
Longitudinal has no SPR peak
Shape monodispersity (% rods) > 95%
Size variation +/-10% (both dimensions)

 

Functionalized Nanorod Block Invitro

 

Organic Nanorod with  Nanopartz™ covalently bonded polymer

Solvent
PVP
Polystyrene
Nanopartz Organic
Nanopartz Conductive
Covalent? No Yes Yes No
Ethanol
Yes
Yes
Yes
Yes
Methanol
Yes
Yes
Yes
Yes
Isopropanol
Yes
Yes
Yes
Yes
Acetone
Yes
Yes
Yes
Yes
DMSO
Yes
Yes
Yes
Yes
DMF
Yes
Yes
Yes
Yes
Acetonitrile
No
Yes
Yes
Yes
Toluene
No
Yes
Yes
No
Chloroform
No
No
Yes
No
Silicon Oil
No
No
Yes
No
Hexane
No
No
Yes
No
Heptane
No
No
Yes
No
Decanol
No
No
Yes
No

 

 

Composition

These nanoparticles are shipped in solvent of choice with no measurable residual reactants.

Custom Formulation

Please contact us.

Quantity

This product is available in 0.25mL volumes and larger. This product is expected to be diluted.

Introductory Kits

Please contact us.

Delivery

Standard sizes are in stock. Special order sizes are shipped in two weeks or less. All domestic shipments are sent Fed Ex Standard Overnight delivery, international Fed Ex Priority 2 day. No shipments on Fridays except for dried particles. Saturday shipping available for extra charge.

Functionalization

This product comes with a number of different covalent and adsorbed options. For adsorbed option, please choose PVP.

Shelf Life/Storage Temperature

This product is guaranteed for six months and should be stored at 4 °C after opening. Care must be taken to only use sterile glassware when working with this product.

Toxicity

This product is known to be noncytotoxic (other than the solvent).

 

Certifications

Every order comes with a Certification of Analysis that includes the following information. We use calibration traceable:

UV-VIS (Agilent 8453) for extinction and concentration measurements

NIR (Cary 500) for NIR extinction and concentration measurements

DLS (Malvern Nano ZS) for zeta potential measurement

ICP-MS (Varian 820-MS) for gold mass measurements

TEM (Phillips CM-100 100KV) for sizing

Spherical Gold Nanoparticles UV VIS

How much thickness does your proprietary capping agent add?

Anywhere from 1-5nm.

How do I determine the concentration of the product?

Simply divide the number of nanoparticles (nps) found on the included COA by the amount of solution you add.

What is a metamaterial?

This is where the concentration is so high, the product acts like mercury.

What can I resuspend the metamaterial into?

Any solvent!

Can I resuspend in water?

No

What is the shelf life if I never open the package and keep refrigerated?

Many years.

Should I store in the refrigerator?

Yes.

How do you size your gold nanoparticles? Does the size include the capping agent?

We use three methods to specify our gold nanoparticles; TEM, UV VIS, and DLS. Each has its own advantages and disadvantages, and we use a weighted system to take advantage of each methods strengths. In the end, we place the strongest weight to the TEM method, particularly since we use samples sizes greater than 50 particles for each lot.

Do you really provide a TEM for my specific lot?

Yes, and not just for 5-10 particles, rather 50-100 are standard.

What is PDI?

PDI refers to polydispersity index and is equal to the standard deviation of the particle sizes divided by the average size.

What if I need to know the polymer being used?

Choose Polystyrene.

What if I need to a non covalent polymer so I can do further conjugations?

Choose PVP.

"I have been using the Nanopartz Organic Spherical Gold Nanoparticles in my research and they have worked extremely well due to the moderate hydrophilicity and high concentration. I highly recommend this product."

Mingmeng Zhang 
PhD Student 
Arizona State University

Optical nonlinearities and ordering in aqueous and organic colloidal plasmonic materials
PB Alvaro Jr - 2018 -
… 36 Comparing the Aqueous Solution with the Organic Solution ..... 39 … 67
V111 Page 9. LIST OF TABLES Table Page Table 3.2.1. Characteristics
of our gold nanorod aqueous solutions from NanoPartz …

Electric field induced orientational order of gold nanorods in dilute organic suspensions
J Fontana, GKB da Costa, JM Pereira… - Applied Physics …, 2016 -
… Electric field induced orientational order of gold nanorods in dilute organic suspensions …


Toxicity of organic and inorganic nanoparticles to four species of white-rot fungi
TPS Galindo, R Pereira, AC Freitas… - Science of the total …, 2013 - Elsevier
… Three inorganic (Fe/Co, CdSe/ZnS-QD, gold nanorods–NP-Au) and two organic (vesicles of
sodium dodecyl sulfate and … Luis, MO, USA), Nanopartz™ (Salt Lake City, UT, USA), Akzo Nobel
Surface ChemistryAB (Stenungsund, Sweden), Sigma-Aldrich, Danisco Ingredients …


Enhanced vortex pinning in Nb using proximity effect through organic molecules
E Katzir, N Sukenik, H Alpern, S Yochelis… - Journal of Physics …, 2018
… (a) Arrays of Au or Ni islands evaporated using standard e-beam lithography. (b) Au NPs attached
via organic molecules in selective regions … The solution consisted of 3.75 Wt% gold NPs attached
to MPS and dispersed in ethanol (purchased from Nanopartz, Inc …


Increasing the Transition Temperature of High-T C Superconductor Thin Films by Organic Linking of Gold Nanoparticles
H Alpern, M Periyasamy, J Tannous, G Jung… - … of Superconductivity and …, 2020 - Springer
… of two optimally doped cuprates, YBa2Cu3O7-δ (YBCO) and La1.85Sr0.15CuO4, (LSCO) increase
upon linking Au NPs to their surface via organic mole- cules … of 10 μL of 1.25 × 10 −2 wt% 10 nm
Au NPs linked to MPS molecules stabilized in ethanol (Nanopartz, Germany), also …

 

These particles utilize a NPO - a Nanopartz™ formulated coating - that shields the particle from the effects of abrasive solvents, and yet, still provide the optical properties inherent to the particles. When shipped as a metamaterial form, can be resuspended in any solvent.

 

Applications

Sensors
Solar Cells
Flexible Optical Polarizers and Filters
Spin coating
Negative refractive index materials
Liquid Crystals
Security anti-forge materials

 

 

  Nanopartz™ in vitro Gold Nanoparticles PEG Gold Nanoparticles
Stability (salt,pH,chemicals) High Medium
Monovalent Yes No
Nonspecific binding Very low Medium
Sterilization Yes No

 

 

  • By choosing the NPO Nanopartz Organic Polymer as a metamaterial, you have chosen a product that can be resuspended in any solvent
  • These products work in a number of different solvents including toluene, chloroform, and more.

Example part number is E11-10-NPO-MM-50-0.25 where:

E11 - Product family number for Organic Spherical Gold Nanoparticles. For Organic Gold Nanorods, its E12 and so forth.

10 - Sphere diameter in nanometers. Other choices are 1.8 to 1500

NPO - Nanopartz Organic Polymer. Other coatings are Polystyrene, PVP, and NPV, Nanopartz Conductive Coating

MM - Metamaterial. Other choices are ETOH, Toluen, and more.

50 - Optical Density, in this case OD=50 at 1mL

0.25 - Volume (mL). Other choices are 1mL, and more.

How to Order

Ordering by scrolling down and selecting the options from the selection below.

 

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Accurate Spherical Gold Nanoparticles with Adsorbed Ligands
Accurate Spherical Gold Nanoparticles with Adsorbed Ligands
Part Number: A11
Options: -(DIAMETER)-(ADSORBED LIGAND)-(BUFFER)-(OD)-(VOL)-CS-EP

These are spherical gold nanoparticles with adsorbed ligands including citrate. Example part number for a 100nm diameter sphere, citrate adsorbed ligand, in water, at 25mL, with sterilization certificate, no endotoxin purification would be: A11-100-CIT-DIH-1-25-CS
Specification Table / COAs Capping Agents SDS/S&H/Tech Notes Additional Info

Specification Table


Part # Diameter (nm) Peak SPR Wavelength (nm) NPS/ml Molarity (pM) Moles Molar Ext. (M-1cm-1) Optical Density (1cm) Size Dispersity %PDI Size Accuracy (+/- nm)
A11-1.8 1.8 n/a 8.51E+14 1.40E+06 1.42E-09 7.05E+05 1 <25% 0.1
A11-2.2 2.2 n/a 4.66E+14 7.80E+05 7.77E-10 1.29E+06 1 <25% 0.1
A11-3 3 n/a 1.84E+14 3.10E+05 3.06E-10 3.26E+06 1 <25% 0.1
A11-4 4 n/a 7.75E+13 1.30E+05 1.29E-10 7.74E+06 1 <25% 1
A11-5 5 512 3.97E+13 6.60E+04 6.62E-11 1.51E+07 1 <20% 2
A11-10 10 516 4.96E+12 8.30E+03 8.27E-12 1.21E+08 1 <10% 2
A11-15 15 518 1.47E+12 2.50E+03 2.45E-12 4.08E+08 1 <10% 2
A11-20 20 520 6.20E+11 1.00E+03 1.03E-12 9.67E+08 1 <9% 2
A11-25 25 521 3.18E+11 5.30E+02 5.29E-13 1.89E+09 1 <9% 2
A11-30 30 523 1.84E+11 3.10E+02 3.06E-13 3.26E+09 1 <8% 2
A11-35 35 526 1.16E+11 1.90E+02 1.93E-13 5.18E+09 1 <8% 2
A11-40 40 527 7.75E+10 1.30E+02 1.29E-13 7.74E+09 1 <7% 2
A11-45 45 529 5.45E+10 9.10E+01 9.08E-14 1.10E+10 1 <7% 2
A11-50 50 531 3.97E+10 6.60E+01 6.62E-14 1.51E+10 1 <6% 2
A11-55 55 533 2.98E+10 5.00E+01 4.97E-14 2.01E+10 1 <6% 2
A11-60 60 536 2.30E+10 3.80E+01 3.83E-14 2.61E+10 1 <5% 2
A11-65 65 539 1.81E+10 3.00E+01 3.01E-14 3.32E+10 1 <5% 2
A11-70 70 542 1.45E+10 2.40E+01 2.41E-14 4.15E+10 1 <4% 2
A11-75 75 545 1.18E+10 2.00E+01 1.96E-14 5.10E+10 1 <3% 2
A11-80 80 549 9.69E+09 1.60E+01 1.62E-14 6.19E+10 1 <3% 2
A11-85 85 553 8.08E+09 1.30E+01 1.35E-14 7.42E+10 1 <3% 2
A11-90 90 558 6.81E+09 1.10E+01 1.13E-14 8.81E+10 1 <3% 2
A11-95 95 563 5.79E+09 9.60E+00 9.65E-15 1.04E+11 1 <3% 2
A11-100 100 569 4.96E+09 8.30E+00 8.27E-15 1.21E+11 1 <3% -2+10
A11-125 125 584 2.54E+09 4.20E+00 4.23E-15 2.36E+11 1 <3% 10
A11-150 150 612 1.47E+09 2.50E+00 2.45E-15 4.08E+11 1 <3% 10
A11-200 200 n/a 6.20E+08 1.00E+00 1.03E-15 9.67E+11 1 <3% 10
A11-500 500 n/a 3.97E+07 6.60E-02 6.62E-17 1.51E+13 0.05 <10% 50
A11-1000 1000 n/a 4.96E+06 8.30E-03 8.27E-18 1.21E+14 0.05 <10% 100
A11-1500 1500 n/a 1.47E+06 2.50E-03 2.45E-18 4.08E+14 0.05 <10% 150


 

Capping Agent Comparison


MW MW (g/mole) Zeta Charge (mV) Salt Resistant? Concentration Sensitive? Easy to adsorb Proteins? Easy to Thiolate? Shelf life at 4C
Citrate 192 -35 1.5mM  Yes  Yes  Yes 6 months
Nanopartz Carboxylic Acid 212 -30 15mM Less than Citrate Better than Citrate Better than Citrate years
PEI 100K 30 150mM No Yes Yes 6 months
PAA 10K -30 150mM No Yes Yes 6 months
PAH 10K 20 150mM No Yes Yes 6 months
PAA 40K -10 0.5M No Yes Yes 6 months
CTAB 364 35 0.5M Yes Yes No 6 months
BSA 66K -15 0.5M No No No 6 months

 

CIT (Citrate)
NPC (Nanopartz Carboxylic Acid
PEI (100K Polyethylenimine)
PAH (25K Polyallylamine hydrochloride)
PAA (10K Polyacrylic acid)
PVP (40K Polyvinylpyrrolidone)
BSA (Bovine Serum Albumin)
CTAB (Cetyltrimethylammonium bromide)
Tannic Acid
SDS
BARE (More than 75% direct gold surface available)
DIH (18MEG DD DI Water)
PBS (Phosphate Buffer Saline pH=7)
MES (pH=4.7)
SOBO (Sodium Borate pH=8.5)
TRIS (pH=7.2)
OD = Optical Density
1 OD = 0.05mg/mL Au
100 OD = 5mg/mL Au
For non plasmonic nanoparticles (500,1000,1500nm)
0.05 OD = 0.05mg/mL Au
5 OD = 5mg/mL Au
Price$500.00