Issue 48, 2020

Introducing electrical conductivity to metal–organic framework thin films by templated polymerization of methyl propiolate

Abstract

We herein present a case study on the templated, Pd-catalyzed polymerization reaction of methyl propiolate in the confined pore space of three different surface anchored metal–organic framework (SURMOF) systems in order to introduce electrical conductivity to MOF thin films and provide predictions for potential device integrations. To gain comprehensive insight into the influence of the template on polymerization, we chose Cu(bpdc), Cu2(bdc)2(dabco) and HKUST-1 because of their different types of pore channels, 1D, quasi-1D and 3D, and their free pore volumes. Well-defined MOF thin films were prepared using layer-by-layer deposition, which allows for the application of several characterization techniques not applicable for conventional powder MOFs. With SEM, AFM, XRD, MALDI-ToF/MS, ToF-SIMS and QCM, we were able to investigate the behaviour of the polymer formation. For lower dimensional pore channels, we find a depot-like release of monomeric units leading to top-layer formation determined by desorption kinetics, whereas for the 3D channels, quick release of an excess amount of monomers was observed and polymerization proceeds perfectly. Despite polymerization issues, control over the maximum chain lengths and the molecular weight distribution was achieved depending on the dimensionality of the pore systems. For the HKUST-1 system, polymerization was optimized and we were able to measure the electrical conductivity introduced by the conjugated polymer inside the channels.

Graphical abstract: Introducing electrical conductivity to metal–organic framework thin films by templated polymerization of methyl propiolate

Supplementary files

Article information

Article type
Paper
Submitted
23 sen 2020
Accepted
11 noy 2020
First published
13 noy 2020
This article is Open Access
Creative Commons BY-NC license

Nanoscale, 2020,12, 24419-24428

Introducing electrical conductivity to metal–organic framework thin films by templated polymerization of methyl propiolate

B. Sen, J. C. C. Santos, R. Haldar, Q. Zhang, T. Hashem, P. Qin, Y. Li, F. Kirschhöfer, G. Brenner-Weiss, H. Gliemann, L. Heinke, C. Barner-Kowollik, A. Knebel and C. Wöll, Nanoscale, 2020, 12, 24419 DOI: 10.1039/D0NR06848A

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. You can use material from this article in other publications, without requesting further permission from the RSC, provided that the correct acknowledgement is given and it is not used for commercial purposes.

To request permission to reproduce material from this article in a commercial publication, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party commercial publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements