Crystalline Unipolymer Monolayer with High Modulus and Conductivity

Abstract

The synthesis of crystalline polymer with a well-defined orientated state and a two-dimensional crystalline size beyond a micrometer will be essential to achieve the highest physical feature of polymer material but remain challenging. Herein, we show the synthesis of the crystalline unipolymer monolayer with an unusual ultrahigh modulus that is higher than the ITO substrate and high conductance by simultaneous electrosynthesis and manipulation. We find that the polymer monolayer has fully extended in the vertical and unidirectional orientation, which is proposed to approach their theoretically highest density, modulus, and conductivity among all aggregation formations of the current polymer. The modulus and current density can reach 40 and 1000 times higher than their amorphous counterpart. It is also found that these monolayers exhibit the bias-and length-dependent multiple charge states and asymmetrically negative differential resistance (NDR) effect, indicating that this unique molecular tailoring and ordering design is promising for multilevel resistive memory devices. Our work demonstrates the creation of a crystalline polymer monolayer for approaching the physical limit of polymer electronic materials and also provides an opportunity to challenge the synthetically iterative limit of an isolated ultra-long polymer.

Composition and sequence-controlled conductance of crystalline unimolecular monolayers

“…S61). These modular values are almost the highest among all organic materials ( 29 ). The highly uniform and modular monolayers with similar values in thicknesses (21 to 23 nm) and theoretical molecular lengths (22 to 23 nm) (figs.…”

One-dimensional benzo[1,2-b:4,5-b′]dithiophene-based graphdiyne for electrochemical adsorption of chloramphenicol

“…20 Another successful strategy has been developed to fabricate two-dimensional (2D) hybrid sp/sp 2 graphdiyne or related carbon rich systems with a 2D structure. [20][21][22][23][24][25][26][27][28] All the above studies have experimentally confirmed the importance of novel carbon allotropes comprising a quantitative content of sp-hybridized carbon and their unusual properties. Compared to sp 2 and sp 3 hybridized carbon, sp carbon shows affinity to certain metal atoms or organic molecules with particular functional groups, which makes carbon material containing sp carbon exhibit broad development space in the fields of selected adsorption, deposition and separation.…”

Design, synthesis, and application of some two-dimensional materials

“…15d). 175 The strong interaction between metal ions and the alkyne bond makes the growth of GDY present a state of eneyne complex in the inner layer and gradient GDY bond in the outer layer. The Cu and O vacancies enhance the ion transport kinetics of the Cu 0.95 V 2 O 5 @GDY phase and increase the lithium storage sites.…”