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Title: Charge Mobility Enhancement for Conjugated DPP-Selenophene Polymer by Simply Replacing One Bulky Branching Alkyl Chain with Linear One at Each DPP Unit

Here, we demonstrate a simple, but efficient, approach for improving the semiconducting performances of DPP-based conjugated D-A polymers. This approach involves the replacement of one bulky branching alkyl chain with the linear one at each DPP unit in regular polymer PDPPSe-10 and PDPPSe-12. The UV–vis absorption, Raman spectra, PDS data, and theoretical calculations support that the replacement of bulky branching chains with linear ones can weaken the steric hindrance, and accordingly conjugated backbones become more planar and rigid. GIWAXS data show that the incorporation of linear alkyl chains as in PDPPSe-10 and PDPPSe-12 is beneficial for side-chain interdigitation and interchain dense packing, leading to improvement of interchain packing order and thin film crystallinity by comparing with PDPPSe, which contains branching alkyl chains. On the basis of field-effect transistor (FET) studies, charge mobilities of PDPPSe-10 and PDPPSe-12 are remarkably enhanced. Hole mobilities of PDPPSe-10 and PDPPSe-12 in air are boosted to 8.1 and 9.4 cm 2 V –1 s –1, which are about 6 and 7 times, respectively, than that of PDPPSe (1.35 cm 2 V –1 s –1). Furthermore, both PDPPSe-10 and PDPPSe-12 behave as ambipolar semiconductors under a nitrogen atmosphere with increased hole/electron mobilities up to 6.5/0.48 cm 2more » V –1 s –1 and 7.9/0.79 cm 2 V –1 s –1, respectively.« less
Authors:
ORCiD logo [1] ; ORCiD logo [2] ;  [1] ;  [3] ; ORCiD logo [1] ; ORCiD logo [4] ; ORCiD logo [3] ; ORCiD logo [2] ; ORCiD logo [5] ;  [3] ; ORCiD logo [1]
  1. Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Chinese Academy of Sciences, Beijing (China)
  2. Chinese Academy of Sciences (CAS), Beijing (China)
  3. Univ. of Cambridge, Cambridge (United Kingdom)
  4. Beijing Institute of Technology, Beijing (China)
  5. Argonne National Lab. (ANL), Lemont, IL (United States); The Univ. of Chicago, Chicago, IL (United States)
Publication Date:
Grant/Contract Number:
AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Chemistry of Materials
Additional Journal Information:
Journal Volume: 30; Journal Issue: 9; Journal ID: ISSN 0897-4756
Publisher:
American Chemical Society (ACS)
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
National Key Research and Development Program of China; National Natural Science Foundation of China (NNSFC); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
OSTI Identifier:
1439556

Wang, Zhijie, Liu, Zitong, Ning, Lu, Xiao, Mingfei, Yi, Yuanping, Cai, Zhengxu, Sadhanala, Aditya, Zhang, Guanxin, Chen, Wei, Sirringhaus, Henning, and Zhang, Deqing. Charge Mobility Enhancement for Conjugated DPP-Selenophene Polymer by Simply Replacing One Bulky Branching Alkyl Chain with Linear One at Each DPP Unit. United States: N. p., Web. doi:10.1021/acs.chemmater.8b01007.
Wang, Zhijie, Liu, Zitong, Ning, Lu, Xiao, Mingfei, Yi, Yuanping, Cai, Zhengxu, Sadhanala, Aditya, Zhang, Guanxin, Chen, Wei, Sirringhaus, Henning, & Zhang, Deqing. Charge Mobility Enhancement for Conjugated DPP-Selenophene Polymer by Simply Replacing One Bulky Branching Alkyl Chain with Linear One at Each DPP Unit. United States. doi:10.1021/acs.chemmater.8b01007.
Wang, Zhijie, Liu, Zitong, Ning, Lu, Xiao, Mingfei, Yi, Yuanping, Cai, Zhengxu, Sadhanala, Aditya, Zhang, Guanxin, Chen, Wei, Sirringhaus, Henning, and Zhang, Deqing. 2018. "Charge Mobility Enhancement for Conjugated DPP-Selenophene Polymer by Simply Replacing One Bulky Branching Alkyl Chain with Linear One at Each DPP Unit". United States. doi:10.1021/acs.chemmater.8b01007. https://www.osti.gov/servlets/purl/1439556.
@article{osti_1439556,
title = {Charge Mobility Enhancement for Conjugated DPP-Selenophene Polymer by Simply Replacing One Bulky Branching Alkyl Chain with Linear One at Each DPP Unit},
author = {Wang, Zhijie and Liu, Zitong and Ning, Lu and Xiao, Mingfei and Yi, Yuanping and Cai, Zhengxu and Sadhanala, Aditya and Zhang, Guanxin and Chen, Wei and Sirringhaus, Henning and Zhang, Deqing},
abstractNote = {Here, we demonstrate a simple, but efficient, approach for improving the semiconducting performances of DPP-based conjugated D-A polymers. This approach involves the replacement of one bulky branching alkyl chain with the linear one at each DPP unit in regular polymer PDPPSe-10 and PDPPSe-12. The UV–vis absorption, Raman spectra, PDS data, and theoretical calculations support that the replacement of bulky branching chains with linear ones can weaken the steric hindrance, and accordingly conjugated backbones become more planar and rigid. GIWAXS data show that the incorporation of linear alkyl chains as in PDPPSe-10 and PDPPSe-12 is beneficial for side-chain interdigitation and interchain dense packing, leading to improvement of interchain packing order and thin film crystallinity by comparing with PDPPSe, which contains branching alkyl chains. On the basis of field-effect transistor (FET) studies, charge mobilities of PDPPSe-10 and PDPPSe-12 are remarkably enhanced. Hole mobilities of PDPPSe-10 and PDPPSe-12 in air are boosted to 8.1 and 9.4 cm2 V–1 s–1, which are about 6 and 7 times, respectively, than that of PDPPSe (1.35 cm2 V–1 s–1). Furthermore, both PDPPSe-10 and PDPPSe-12 behave as ambipolar semiconductors under a nitrogen atmosphere with increased hole/electron mobilities up to 6.5/0.48 cm2 V–1 s–1 and 7.9/0.79 cm2 V–1 s–1, respectively.},
doi = {10.1021/acs.chemmater.8b01007},
journal = {Chemistry of Materials},
number = 9,
volume = 30,
place = {United States},
year = {2018},
month = {4}
}