cracking of dodecane to make ethene hybridization

In some approaches, specific molecular combinations are required to achieve high stretchability 38, which may limit the broad application of such methods. However, such multi-component systems are highly sensitive to processing conditions 35, 36, 37. Several types of additives have been reported and have shown some promise. Even though significant progress has been made with the incorporation of dynamic bonding units, partial breakage of the conjugation makes it challenging to control the morphology, which makes it difficult to realize high mobility 32, 33, 34. For example, charge carrier mobility is often reduced with increasing stretchability, which significantly limits the use of stretchable semiconducting polymers 30, 31. Stretchable semiconducting polymers have several additional advantages such as low-cost solution processability and scalability 28, 29 however, several challenges remain to be overcome for stretchable semiconducting polymers. As a key component in electronics, semiconductors that are intrinsically stretchable will allow the fabrication of high-density devices and create more robust products. A number of promising applications, such as stretchable circuits 11, 12, 13, 14, 15, 16, displays 17, 18, 19, 20, 21, 22, and energy storage devices 23, 24, 25, 26, 27, have been demonstrated. Such electronics with new form factors will undoubtedly improve our daily life in the future 10.

With increasing needs for wearable and implantable electronics, flexible and stretchable electronics have developed recently 1, 2, 3, 4, 5, 6, 7, 8, 9.

Our general molecular engineering strategy offers a rapid way to develop high mobility stretchable semiconducting polymers. Finally, fully stretchable transistors fabricated with our newly designed stretchable semiconductors exhibit the highest and most stable mobility retention capability under repeated strains of 1,000 cycles. The proposed molecular design concept is observed to improve the mechanical properties of various p- and n-type conjugated polymers, thus showing the general applicability of our approach.

Interestingly, the crystalline microstructures are mostly retained even under strain, which may contribute to the improved robustness of our stretchable semiconductors. The resulting polymers maintain high mobility while having much improved stretchability and mechanical reversibility compared with the regular polymer structure with only one type of co-monomer units. Specifically, incorporating two types of randomly distributed co-monomer units reduces overall crystallinity and longer-range orders while maintaining short-range ordered aggregates. Here, we report a simple and universal strategy to realize intrinsically stretchable semiconducting polymers with controlled multi-scale ordering to address this challenge. However, it remains challenging to achieve stretchable semiconducting polymers with high mobility and mechanical reversibility against repeated mechanical stress. As a key component in stretchable electronics, semiconducting polymers have been widely studied.

Cracking of dodecane to make ethene hybridization