Linear vs exponential formation of molecular-based assemblies.
Here we present the critical role of the molecular structure and reaction parameters on the nature of thin-film growth, using a versatile two-step assembly method with organic and metal-organic chromophores cross-linked with palladium. It was found that the polypyridyl complexes exhibit exponential growth, whereas, under identical conditions, the organic systems exhibit linear behavior. The internal film morphology plays a pivotal role in the storage and usage of the palladium, where a more porous structure results in exponential growth. Interestingly, through proper tuning of the reaction conditions, the growth of the molecular assemblies can be controlled, resulting in a changeover from exponential to linear growth. These findings unequivocally demonstrate the importance of both the internal film structure and deposition conditions on the assembly of molecular-based films.
Choudhury
Joyanta
J
Department of Organic Chemistry, The Weizmann Institute of Science, Rehovot 76100, Israel.
Kaminker
Revital
R
Motiei
Leila
L
de Ruiter
Graham
G
Morozov
Michael
M
Lupo
Fabio
F
Gulino
Antonino
A
van der Boom
Milko E
ME