Scanning tunneling microscopy (STM) evidence of semicrystalline and helical conducting polymer structures

Autor:	L. Christensen, Ralph T. Yang, W. A. Hendrickson, D. F. Evans
Rok vydání:	1990
Předmět:	Conductive polymer chemistry.chemical_classification Superhelix General Engineering Nanotechnology Polymer Polypyrrole Amorphous solid law.invention chemistry.chemical_compound Crystallography chemistry law Microscopy Polythiophene Physical and Theoretical Chemistry Scanning tunneling microscope
Zdroj:	The Journal of Physical Chemistry. 94:6117-6122
ISSN:	1541-5740 0022-3654
DOI:	10.1021/j100378a087
Popis:	Scanning tunneling microscopy images of strands, microislands, and thin films formed by the conducting polymers polypyrrole tosylate, polypyrrole tetrafluoroborate, and polythiophene tetrafluoroborate are presented. The polymer strands and microislands contain two types of helical structures with diameters of 1.5-1.8 nm, a simple helix, and 5-6 nm, a superhelix. The polymer films gradually transform from an ordered crystalline array located at the anode surface to an amorphous material at the air-polymer interface.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b5d5e826b631ba99d7fb6325cc726a20 https://doi.org/10.1021/j100378a087 Zobrazit plný text záznamu