Abstract
The two-dimensional assembling behavior of a series of poly(p-phenyleneethynylene) (PPE) derivatives having identical conjugated backbone but different substituents and degrees of polymerization has been studied using scanning tunneling microscopy (STM). Submolecularly resolved STM images reveal diverse forms of chain folding in the assembled monolayer, allowing the analysis of the effects of polarity and concentration of substituents on the assembling behavior and chain folding of PPE. Theoretical simulations have been performed to understand the structural effects on the chain folding characteristics on the surface. The submolecularly resolved STM images also enable the quasi-quantitative determination of molecular weight and number-averaged degree of polymerization. The histograms of the contour length measured from the STM images agree well with the theoretical Schulz−Zimm distribution, indicating the potential capacity of the STM method for the estimation of molecular weight distribution of rigid-rod...
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
