What question did this study set out to answer?

Determine the tensile modulus and crack-onset strain across a diverse library of 51 low-band-gap conjugated polymers to clarify structure-property relationships for robust, flexible organic electronics.

March 14, 2016Chemistry of Materials

Mechanical Properties of a Library of Low-Band-Gap Polymers

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Authors

BRBérenger RothUniversity of California, San Diego SSSuchol SavagatrupUniversity of Arizona NSNathaniel V. de los SantosUniversity of California, San Diego

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Implication

Material screening reveals structural determinants of stiffness and ductility in 51 low-band-gap polymers, highlighting design rules for flexible organic electronic devices.

Key Points

Determine the tensile modulus and crack-onset strain across a diverse library of 51 low-band-gap conjugated polymers to clarify structure-property relationships for robust, flexible organic electronics.
Measured tensile modulus (stiffness) and crack-onset strain (ductility) across a combinatorial library of N=51 low-band-gap polymers.
Evaluated the mechanical impact of chemical design motifs, specifically examining fused aromatic rings versus branched side chains alongside molecular packing effects.
Fused aromatic rings increased polymer modulus while decreasing ductility, whereas branched side chains consistently reduced stiffness and improved ductility.
Highly deformable polymer films exhibited compliant tensile moduli (≥ 150 MPa) and substantial ductility, reaching crack-onset strains of up to ≤ 68%.
Proposed a composite figure of merit combining mechanical deformability with roll-to-roll power conversion efficiency to optimize materials for durable, flexible electronic modules.

Cite This Study

Roth et al. (2016) studied this question.

synapsesocial.com/papers/69dd5eb0656f15f1fc10130d https://doi.org/10.1021/acs.chemmater.6b00525

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Implication

Material screening reveals structural determinants of stiffness and ductility in 51 low-band-gap polymers, highlighting design rules for flexible organic electronic devices.

Mechanical Properties of a Library of Low-Band-Gap Polymers

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Implication

Key Points

Cite This Study

Mechanical Properties of a Library of Low-Band-Gap Polymers

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Implication

Key Points

Cite This Study

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