The Effect of Varying the Ratio of Hitenol to Noigen on the Clearing

Temperature of the Gel

Samples(55:31:14)

Sample Name ExperimentalSample Name

Percentage

Hitenol+Noigen(Ratio Hit:Noi)

Butyl Methacrylate Water

A W 54.7%(12.9:1)

30.6% 14.7%

B 1 54.6%(10.1:1)

31.5% 13.8%

C 3 55.3%(9.6:1)

30.4% 14.3%

D Z 54.4%(8:1)

31.3% 14.3%

E 2 55.2%(7.5:1)

30.9% 13.9%

Samples(55:31:14)

Sample Name

Percentage

Hitenol+Noigen(Ratio Hit:Noi)

Butyl Methacrylate Water

A54.7%

(12.9:1)30.6% 14.7%

B54.6%

(10.1:1)31.5% 13.8%

C55.3%(9.6:1)

30.4% 14.3%

D54.4%(8:1)

31.3% 14.3%

E55.2%(7.5:1)

30.9% 13.9%

Samples(55:31:14)

Sample Name

Percentage

Hitenol+Noigen(Ratio Hit:Noi)

Butyl Methacrylate Water

A54.7%

(12.9:1)30.6% 14.7%

B54.6%

(10.1:1)31.5% 13.8%

C55.3%(9.6:1)

30.4% 14.3%

D54.4%(8:1)

31.3% 14.3%

E55.2%(7.5:1)

30.9% 13.9%

70 75 80 85 90 950

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

Temperature (C)

Inte

nsity

Normalized Intensity vs Temperature for 2 heat-cool cycles

Heating Cycle 1Cooling Cycle 1Heating Cycle 2Cooling Cycle 2

Sample A - 12.9:1

70 75 80 85 90 950

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

Temperature

Nor

mal

ized

Inte

nsity

Sigmoidal Fit of 2nd Heating & Cooling Curves

Sigmoidal FitCooling Cycle DataSigmoidal FitHeating Cycle Data

The value of the (cooling) clearing temperature is: 87.4812The value of the (heating) clearing temperature is: 86.5312

Sample A - 12.9:1

Samples(55:31:14)

Sample Name

Percentage

Hitenol+Noigen(Ratio Hit:Noi)

Butyl Methacrylate Water

A54.7%

(12.9:1)30.6% 14.7%

B54.6%

(10.1:1)31.5% 13.8%

C55.3%(9.6:1)

30.4% 14.3%

D54.4%(8:1)

31.3% 14.3%

E55.2%(7.5:1)

30.9% 13.9%

74 76 78 80 82 84 86 88 90 92 940

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

Temperature (C)

Inte

nsity

Normalized Intensity vs Temperature for 2 heat-cool cycles

Heating Cycle 1Cooling Cycle 1Heating Cycle 2Cooling Cycle 2

Sample B - 10.1:1

Sample B - 10.1:1

74 76 78 80 82 84 86 88 90 92 940

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

Temperature

Nor

mal

ized

Inte

nsity

Sigmoidal Fit of 2nd Heating & Cooling Curves

Sigmoidal FitCooling Cycle DataSigmoidal FitHeating Cycle Data

The value of the (heating) clearing temperature is: 86.5326The value of the (cooling) clearing temperature is: 84.5354

Samples(55:31:14)

Sample Name

Percentage

Hitenol+Noigen(Ratio Hit:Noi)

Butyl Methacrylate Water

A54.7%

(12.9:1)30.6% 14.7%

B54.6%

(10.1:1)31.5% 13.8%

C55.3%(9.6:1)

30.4% 14.3%

D54.4%(8:1)

31.3% 14.3%

E55.2%(7.5:1)

30.9% 13.9%

70 75 80 85 90 950

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

Temperature (C)

Inte

nsity

Normalized Intensity vs Temperature for 2 heat-cool cycles

Heating Cycle 1Cooling Cycle 1Heating Cycle 2Cooling Cycle 2

Sample C - 9.6:1

70 75 80 85 90 950

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

Temperature

Nor

mal

ized

Inte

nsity

Sigmoidal Fit of 2nd Heating & Cooling Curves

Sigmoidal FitCooling Cycle DataSigmoidal FitHeating Cycle Data

The value of the (heating) clearing temperature is: 85.7208The value of the (cooling) clearing temperature is: 82.4773

Sample C - 9.6:1

Samples(55:31:14)

Sample Name

Percentage

Hitenol+Noigen(Ratio Hit:Noi)

Butyl Methacrylate Water

A54.7%

(12.9:1)30.6% 14.7%

B54.6%

(10.1:1)31.5% 13.8%

C55.3%(9.6:1)

30.4% 14.3%

D54.4%(8:1)

31.3% 14.3%

E55.2%(7.5:1)

30.9% 13.9%

60 65 70 75 80 85 900

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

Temperature (C)

Inte

nsity

Normalized Intensity vs Temperature for 2 heat-cool cycles

Heating Cycle 1Cooling Cycle 1Heating Cycle 2Cooling Cycle 2

Sample D - 8:1

60 65 70 75 80 85 900

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

Temperature

Nor

mal

ized

Inte

nsity

Sigmoidal Fit of 2nd Heating & Cooling Curves

Sigmoidal FitCooling Cycle DataSigmoidal FitHeating Cycle Data

Sample D - 8:1

The value of the (heating) clearing temperature is: 80.1485The value of the (cooling) clearing temperature is: 74.0822

Samples(55:31:14)

Sample Name

Percentage

Hitenol+Noigen(Ratio Hit:Noi)

Butyl Methacrylate Water

A54.7%

(12.9:1)30.6% 14.7%

B54.6%

(10.1:1)31.5% 13.8%

C55.3%(9.6:1)

30.4% 14.3%

D54.4%(8:1)

31.3% 14.3%

E55.2%(7.5:1)

30.9% 13.9%

60 65 70 75 80 85 900

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

Temperature (C)

Inte

nsity

Normalized Intensity vs Temperature for 2 heat-cool cycles

Heating Cycle 1Cooling Cycle 1Heating Cycle 2Cooling Cycle 2

Sample E - 7.5:1

60 65 70 75 80 85 900

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

Temperature

Nor

mal

ized

Inte

nsity

Sigmoidal Fit of 2nd Heating & Cooling Curves

Sigmoidal FitCooling Cycle DataSigmoidal FitHeating Cycle Data

The value of the (heating) clearing temperature is: 75.299The value of the (cooling) clearing temperature is: 73.2607

Sample E - 7.5:1

5 6 7 8 9 10 11 12 13 1465

70

75

80

85

90

Graph Showing Effect of Hit:Noi Ratio on Clearing Temperature

Clearing temp (heating curves)Clearing temp (cooling curves)

Hit/Noi ratio

Clea

ring

Tem

pera

ture

How concentration affects NIR results

7,000 8,000 9,000 10,000 11,0000.0

0.2

0.4

0.6

0.8

1.0 measured spectrum simulated spectrum basis function

Nor

mal

ized

em

issi

on in

tens

ity

Optical frequency (cm-1)

Fluorescence Spectrum638 nm excitation

7/28/2011 10:29:42E:\99C:\Users\Taneja\Documents\OriginLab\85\User Files\ilution_startingfrom10mgopermlCNT_original.opj - [Fluor638]

AppliedNanoFluorescence

(Original )CNT dispersed in 1% surfactant solution, sonicated at 30 W for 15 minutes,

centrifuged at 6000rpm for 30 minutes, decanted and process diluted to ~ 99% and

then process repeated

7,000 8,000 9,000 10,000 11,0000.0

0.2

0.4

0.6

0.8

1.0 measured spectrum simulated spectrum basis function

Nor

mal

ized

em

issi

on in

tens

ity

Optical frequency (cm-1)

Fluorescence Spectrum638 nm excitation

7/28/2011 10:21:06E:\99C:\Users\Taneja\Documents\OriginLab\85\User Files\ilution_startingfrom10mgopermlCNT_original_halfdiluted.opj - [Fluor638]

AppliedNanoFluorescence Diluted to 50% of Original Concentration

7,000 8,000 9,000 10,000 11,0000.0

0.2

0.4

0.6

0.8

measured spectrum simulated spectrum basis function

Nor

mal

ized

em

issi

on in

tens

ity

Optical frequency (cm-1)

Fluorescence Spectrum638 nm excitation

7/28/2011 10:17:19E:\99C:\Users\Taneja\Documents\OriginLab\85\User Files\ilution_startingfrom10mgopermlCNT_original_quarterdiluted.opj - [Fluor638]

AppliedNanoFluorescence Diluted to 25% of Original Concentration

Observations

•General shape the same

•Intensities different-most dilute solution has overall lower intensity as expected-50% dilution shows increase in intensity at most optical frequencies but NOT at the frequency with the highest peak (???) […Saturation?]

•Smoothness different-smoothness of curve decreases as we move from highest to lowest concentration (possibly lower concentrations = increased sensitivity… or not?)

How Power Affects dispersion of SWNT

7,000 8,000 9,000 10,000 11,0000.0

0.2

0.4

0.6 measured spectrum simulated spectrum basis function

Nor

mal

ized

em

issi

on in

tens

ity

Optical frequency (cm-1)

Fluorescence Spectrum638 nm excitation

7/28/2011 11:08:58E:\99C:\Users\Taneja\Documents\OriginLab\85\User Files\ilution_startingfrom10mgopermlCNT_12WattSonication.opj - [Fluor638]

AppliedNanoFluorescence Sonication @ 12W for 15 minutes

7,000 8,000 9,000 10,000 11,0000.0

0.2

0.4

0.6 measured spectrum simulated spectrum basis function

Nor

mal

ized

em

issi

on in

tens

ity

Optical frequency (cm-1)

Fluorescence Spectrum638 nm excitation

7/28/2011 11:09:55E:\99C:\Users\Taneja\Documents\OriginLab\85\User Files\ilution_startingfrom10mgopermlCNT_27WattSonication.opj - [Fluor638]

AppliedNanoFluorescence

Sonication @ 27W for 15 minutes

Observations

•General shape the same

•Peaks more well-defined in higher-power sonication

http://www.swentnano.com/tech/docs/Procedure_for_dispersing_SWNT.pdf