Thermally induced crystallization behavior and film microstructure alteration of N,N,N′,N′-tetraphenylbenzidine (TPB) and N,N,N′,N′-tetra-p-tolyl-benzidine (TTB) |
| |
| Affiliation: | 1. Department of Energy and Materials Engineering, Dongguk University, 26 Pil-dong, 3 ga, Jung-gu, Seoul 100-715, Republic of Korea;2. Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE, United Kingdom;3. Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany;4. International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan;1. Electrical and Computer Engineering Department, University of Denver, 2390 S York St, Denver, CO 80208, USA;2. Department of Electrical, Computer, and Energy Engineering, University of Colorado at Boulder, 425 UCB, Boulder, CO 80309, USA;3. Department of Physics and Astronomy, University of Denver, 2112 E Wesley Ave, Denver, CO 80208, USA;4. College of Technology, Purdue University, 5500 State Road 38E, West Lafayette, IN 47907, USA;5. National Renewable Energy Laboratory, 1617 Cole Blvd, Golden, CO 80401, USA;6. Department of Physics, University of Colorado at Boulder, 390 UCB, Boulder, CO 80309, USA;1. Dipartimento di Scienze Fisiche e Chimiche, Università dell’Aquila, Via Vetoio 10, 67100 L’Aquila, Italy;2. Dipartimento di Ingegneria Elettronica, Università di Roma “Tor Vergata”, Viale Politecnico I, 00133 Roma, Italy;3. Istituto Superiore delle Comunicazioni e delle Tecnologie dell''Informazione, Ministero dello Sviluppo Economico, Viale America 201, 00144 Roma, Italy;4. CNR-SPIN L’Aquila, Via Vetoio 10, 67100 L’Aquila, Italy;1. Materials Research Institute, School of Physics and Astronomy, Queen Mary University of London, Mile End Road E1 4NS, London, United Kingdom;2. College of Physical Science and Technology, Sichuan University, Chengdu 610064, China;1. Department of Nanobiomedical Science & WCU Research Center, Dankook University Graduate School, Chenan-si, Chungnam 330-714, Republic of Korea;2. Department of Polymer Science and Engineering, Dankook University, 126, Jukjeon-dong, Suji-gu, Yongin-si, Gyeonggi-do 448-701, Republic of Korea |
| |
| Abstract: | In this paper, the thermally induced crystallization behavior of N,N,N′,N′-tetraphenylbenzidine (TPB) and N,N,N′,N′-tetra-p-tolylbenzidine (TTB) and their microstructure changes as well as π–π aggregation mode as film state were comprehensively studied. The influence of heating rate, annealing temperature and time on the non-isothermal crystallization behavior of TPB and TTB powder was evaluated by Jeziorny method. Cold crystallization with the transition of metastable state was observed for both TPB and TTB. The thermally induced microstructure alteration and aggregation pattern of TPB and TTB films were investigated using XRD, SEM and AFM. The results revealed that both TPB and TTB could form smooth amorphous thin film and effective π–π interaction with identical edge-on orientations. TTB was prone to pack with both edge-on and face-on orientations especially after annealing, which accounts for its relatively low hole mobility. Besides, a more ordered film microstructure was formed after annealing at 70 °C for 24 h, which results in nearly four times increase of the hole mobility. |
| |
| Keywords: | Cold crystallization π–π Aggregation |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
