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Effects of Molecular Structure and Packing Order on the Stretchability of Semicrystalline Conjugated Poly(Tetrathienoacene-diketopyrrolopyrrole) Polymers

Journal Article · · Advanced Electronic Materials
 [1];  [2];  [3];  [4];  [4];  [5];  [4];  [6];  [6];  [6];  [4];  [5];  [7];  [4]
  1. Stanford Univ., CA (United States). Dept. of Chemical Engineering; National Taiwan Univ., Taipei (Taiwan). Dept. of Chemical Engineering
  2. National Taipei Univ. of Technology, Taipei (Taiwan). Dept. of Chemical Engineering and Biotechnology
  3. Stanford Univ., CA (United States). Dept. of Chemical Engineering; SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL); Univ. of Southern Mississippi, Hattiesburg (United States). School of Polymers and High Performance Materials
  4. Stanford Univ., CA (United States). Dept. of Chemical Engineering
  5. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)
  6. Corning Incorporated, Corning, NY (United States)
  7. National Taiwan Univ., Taipei (Taiwan). Dept. of Chemical Engineering
+ Show Author Affiliations

The design of polymer semiconductors possessing high charge transport performance, coupled with good ductility, remains a challenge. Understanding the distribution and behavior of both crystalline domains and amorphous regions in conjugated polymer films, upon an applied stress, shall provide general guiding principles to design stretchable organic semiconductors. Structure–property relationships (especially in both side chain and backbone engineering) are investigated for a series of poly(tetrathienoacene-diketopyrrolopyrrole) polymers. It is observed that the fused thiophene diketopyrrolopyrrole-based polymer, when incorporated with branched side chains and an additional thiophene spacer in the backbone, exhibits improved mechanical endurance and, in addition, does not show crack propagation until 40% strain. Furthermore, this polymer exhibits a hole mobility of 0.1 cm2 V-1 s-1 even at 100% strain or after recovered from strain, which reveals prominent continuity and viscoelasticity of the polymer thin film. In conclusion, it is also observed that the molecular packing orientations (either edge-on or face-on) significantly affect the mechanical compliance of the polymer films. The improved stretchability of the polymers is attributed to both the presence of soft amorphous regions and the intrinsic packing arrangement of its crystalline domains.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); US Air Force Office of Scientific Research (AFOSR); Ministry of Science and Technology,Taiwan
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1353111
Alternate ID(s):
OSTI ID: 1401503
Journal Information:
Advanced Electronic Materials, Journal Name: Advanced Electronic Materials Journal Issue: 2 Vol. 3; ISSN 2199-160X
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (18)

Effect of Nonconjugated Spacers on Mechanical Properties of Semiconducting Polymers for Stretchable Transistors journal September 2018
An Intrinsically Stretchable High‐Performance Polymer Semiconductor with Low Crystallinity journal September 2019
Conjugated Polymer Actuators and Devices: Progress and Opportunities journal March 2019
Rubbery Electronics Fully Made of Stretchable Elastomeric Electronic Materials journal June 2019
Material‐Based Approaches for the Fabrication of Stretchable Electronics journal April 2020
Developments of Diketopyrrolopyrrole‐Dye‐Based Organic Semiconductors for a Wide Range of Applications in Electronics journal December 2019
Conjugated Carbon Cyclic Nanorings as Additives for Intrinsically Stretchable Semiconducting Polymers journal September 2019
Electronic Skin: Recent Progress and Future Prospects for Skin‐Attachable Devices for Health Monitoring, Robotics, and Prosthetics journal September 2019
Highly Efficient Flexible Polymer Solar Cells with Robust Mechanical Stability journal February 2019
Connecting the Mechanical and Conductive Properties of Conjugated Polymers journal December 2017
Stretchable Polymer Semiconductors for Plastic Electronics journal January 2018
The Critical Role of Electron‐Donating Thiophene Groups on the Mechanical and Thermal Properties of Donor–Acceptor Semiconducting Polymers journal March 2019
Glass Transition Phenomenon for Conjugated Polymers journal April 2019
One-pot synthesized ABA tri-block copolymers for high-performance organic field-effect transistors journal January 2018
A facile post-peeling modification approach of elastic dielectrics for high-performance conformal organic thin-film transistors journal January 2019
The effect of side-chain branch position on the thermal properties of poly(3-alkylthiophenes) journal January 2020
Conjugated polymers and composites for stretchable organic electronics journal January 2019
In situ measurements of the structure and strain of a π-conjugated semiconducting polymer under mechanical load journal January 2020

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Related Subjects

36 MATERIALS SCIENCE
alkyl side chains
conjugated polymers
crystalline orientation
organic field-effect transitors
stretchable electronics