Non-isothermal Crystallization Behaviors of N,N,N',N'-Tetraphenylbenzidine (TPB)
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Non-isothermal Crystallization Behaviors of N,N,N',N'-Tetraphenylbenzidine (TPB). Reporter : Xiaosi Ma Tutor : Prof. Shirong Wang School of chemical engineering and technology, Tianjin University, China. Outline. 1. Introduction. 2. Results and Disscusion. 3. Conclusion. 1.

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Non-isothermal Crystallization Behaviors of N,N,N',N'-Tetraphenylbenzidine (TPB)

Reporter:Xiaosi Ma

Tutor: Prof. Shirong Wang

School of chemical engineering and technology,

Tianjin University, China


Outline N,N,N',N'-Tetraphenylbenzidine (TPB)

1

Introduction

2

Results and Disscusion

3

Conclusion


1 N,N,N',N'-Tetraphenylbenzidine (TPB)

Introduction

thin and light

flexional

wide viewing angle

low operating voltage

fast response

self-luminous

high luminous efficiency


1 N,N,N',N'-Tetraphenylbenzidine (TPB)

Introduction


Hole transporting materials N,N,N',N'-Tetraphenylbenzidine (TPB)

appropriate energy level of HOMO and LUMO

high thermal stability

good film forming ability

high mobility

1

Introduction


1 N,N,N',N'-Tetraphenylbenzidine (TPB)

Introduction

Hydrazone derivatives

Pyrazoline derivatives

Carbazole derivatives

Triphenylamine derivatives

Styrene derivatives


2 N,N,N',N'-Tetraphenylbenzidine (TPB)

Results and Discussion

Result

Fig. 1 The cold crystallization curves of TPB


2 N,N,N',N'-Tetraphenylbenzidine (TPB)

Results and Discussion

Jeziorny method

Avrami equation

ln[- ln(1- Xt)] = ln Zt + nln t

Jeziorny equation

ln Zc = ln Zt /Φ

Fig. 2 The Avrami curves of TPB

Tab. 1 The Jeziorny parameters of TPB


2 N,N,N',N'-Tetraphenylbenzidine (TPB)

Results and Discussion

Ozawa method

Ozawa equation

ln[-ln(1-Xt)]=lnK–mlnΦ

Fig. 3 The Ozawa curves of TPB

Tab. 2 The Ozawa parameters of TPB


2 N,N,N',N'-Tetraphenylbenzidine (TPB)

Results and Discussion

Mo method

Mo equation

lnΦ = ln F(T) -αln t

Fig. 6 The Mo curves of TPB

Tab. 3 The Mo parameters of TPB


2 N,N,N',N'-Tetraphenylbenzidine (TPB)

Results and Discussion

XRD

Fig. 7 The DSC curve of TPB

Fig. 8 The XRD patterns of TPB


3 N,N,N',N'-Tetraphenylbenzidine (TPB)

Conclusion

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2

The crystallization rate of TPB increases with the heating rate

1

2

The nucleation type is affected by the heating rate


Acknowledgment N,N,N',N'-Tetraphenylbenzidine (TPB)

Financial Support

National Natural Science Found-ation of China (21176180) 

National High Technology Research and Development Program of China (2012AA030607)

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Thanks for your attention N,N,N',N'-Tetraphenylbenzidine (TPB)!


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