Layer-by-Layer Self-Assembly of Polymers with Pairing Interactions

A molecular theory is introduced to model the layer-by-layer self-assembly (LbL-SA) of polymers with pairing interactions. Our theory provides a general framework to describe nonelectrostatic LbL-SA as the pairing interactions generically describe the formation of bonds between two complementary che...

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Publicado: 2016
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_21611653_v5_n7_p862_Zaldivar
http://hdl.handle.net/20.500.12110/paper_21611653_v5_n7_p862_Zaldivar
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_21611653_v5_n7_p862_Zaldivar
record_format dspace
spelling paper:paper_21611653_v5_n7_p862_Zaldivar2023-06-08T16:34:26Z Layer-by-Layer Self-Assembly of Polymers with Pairing Interactions A molecular theory is introduced to model the layer-by-layer self-assembly (LbL-SA) of polymers with pairing interactions. Our theory provides a general framework to describe nonelectrostatic LbL-SA as the pairing interactions generically describe the formation of bonds between two complementary chemical species, for example, hydrogen donor and acceptor in hydrogen-bonding-LbL or host and guest in host-guest-LbL. The theory predicts fundamental observations related to LbL-SA: (i) phase separation of a mixture of polymers with pairing interactions in bulk solution, (ii) linear increase in film thickness with the number of LbL adsorption steps, (iii) stoichiometry overcompensation after each adsorption step, and (iv) interpenetration of polymer layers. Importantly, this study shows that the minimal requirement for nonelectrostatic LbL is the competition of a pairing interaction and an excluded-volume repulsion. A simple analytical model based on this competition predicts the volume fraction of the layers in good agreement with the numerical predictions of the molecular theory. © 2016 American Chemical Society. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_21611653_v5_n7_p862_Zaldivar http://hdl.handle.net/20.500.12110/paper_21611653_v5_n7_p862_Zaldivar
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description A molecular theory is introduced to model the layer-by-layer self-assembly (LbL-SA) of polymers with pairing interactions. Our theory provides a general framework to describe nonelectrostatic LbL-SA as the pairing interactions generically describe the formation of bonds between two complementary chemical species, for example, hydrogen donor and acceptor in hydrogen-bonding-LbL or host and guest in host-guest-LbL. The theory predicts fundamental observations related to LbL-SA: (i) phase separation of a mixture of polymers with pairing interactions in bulk solution, (ii) linear increase in film thickness with the number of LbL adsorption steps, (iii) stoichiometry overcompensation after each adsorption step, and (iv) interpenetration of polymer layers. Importantly, this study shows that the minimal requirement for nonelectrostatic LbL is the competition of a pairing interaction and an excluded-volume repulsion. A simple analytical model based on this competition predicts the volume fraction of the layers in good agreement with the numerical predictions of the molecular theory. © 2016 American Chemical Society.
title Layer-by-Layer Self-Assembly of Polymers with Pairing Interactions
spellingShingle Layer-by-Layer Self-Assembly of Polymers with Pairing Interactions
title_short Layer-by-Layer Self-Assembly of Polymers with Pairing Interactions
title_full Layer-by-Layer Self-Assembly of Polymers with Pairing Interactions
title_fullStr Layer-by-Layer Self-Assembly of Polymers with Pairing Interactions
title_full_unstemmed Layer-by-Layer Self-Assembly of Polymers with Pairing Interactions
title_sort layer-by-layer self-assembly of polymers with pairing interactions
publishDate 2016
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_21611653_v5_n7_p862_Zaldivar
http://hdl.handle.net/20.500.12110/paper_21611653_v5_n7_p862_Zaldivar
_version_ 1768546090125099008

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