Side chain effects in the packing structure and stiffness of redox-responsive ferrocene-containing polymer brushes

Lu Gan , Jing Song , Shifeng Guo , Dominik Jańczewski , Christian A. Nijhuis

Abstract

This paper describes the preparation of ferrocene-containing polymer brushes with different side chain lengths by surface-initiated atom transfer radical polymerization (SI-ATRP). The polymer brushes are characterized by cyclic voltammetry to determine the surface coverage of the ferrocene (Fc) units, their thickness in air by atomic force microscopy (AFM) and ellipsometry, and their mechanical properties by AFM-based nanoindentation. The results are compared against an ideal packing model and we conclude that brushes with short linkers between the Fc units and the polymer back bone are stiff and stand up in air up to 40 nm tall. In contrast, polymers with long linkers collapse and do not stand up in air. Our results indicate that the stiffness and packing structure of Fc-containing polymer brushes are affected by the length of the linkers between the Fc and polymer back bone.
Author Lu Gan - [National University of Singapore]
Lu Gan,,
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, Jing Song - [A-Star, Institute of Materials Research and Engineering]
Jing Song,,
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, Shifeng Guo - [A-Star, Institute of Materials Research and Engineering]
Shifeng Guo,,
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, Dominik Jańczewski (FC / LTP)
Dominik Jańczewski,,
- Laboratory Of Technological Processes
, Christian A. Nijhuis - [National University of Singapore]
Christian A. Nijhuis,,
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Journal seriesEuropean Polymer Journal, ISSN 0014-3057
Issue year2016
Vol83
Pages517-528
Publication size in sheets0.55
Keywords in EnglishFerrocene; Polymer brush; Electrochemistry; Redox-active; Mechanical properties
ASJC Classification1605 Organic Chemistry; 2507 Polymers and Plastics; 3100 General Physics and Astronomy
DOIDOI:10.1016/j.eurpolymj.2016.05.017
URL http://www.sciencedirect.com/science/article/pii/S0014305716304396
Languageen angielski
File
2016_EPJ_Guo.pdf 1.93 MB
Score (nominal)35
Score sourcejournalList
ScoreMinisterial score = 35.0, 31-01-2020, ArticleFromJournal
Ministerial score (2013-2016) = 35.0, 31-01-2020, ArticleFromJournal
Publication indicators Scopus Citations = 9; WoS Citations = 8; Scopus SNIP (Source Normalised Impact per Paper): 2016 = 1.303; WoS Impact Factor: 2016 = 3.531 (2) - 2016=3.658 (5)
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