Issue 5, 2016

Modulating the electrical conductivity of metal–organic framework films with intercalated guest π-systems

Abstract

The access to electroactive metal–organic frameworks (MOFs) and the ability to manipulate their electrical properties with external stimuli are vital for the realization of MOF-based electronic and photonic devices. To this end, we have constructed a new blue colored pillared-paddlewheel (PPW) MOF, namely BMOF composed of redox-active N,N′-bis(4-pyridyl)-2,6-dipyrrolidyl naphthalenediimide (BPDPNDI) pillars and 1,2,4,5-tetrakis-(4-carboxyphenyl)benzene (TCPB) struts, and grown stable, uniform BMOF films on ZnO substrates via a bottom-up method for device integration and testing. The electrical conductivity (σ) of BMOF films is ca. 6 × 10−5 S m−1 (25 °C), which surges up to 2.3 × 10−3 S m−1 upon infiltration of π-acidic methyl viologen (MV2+) guests, but remains unaffected by large C60 molecules that are size excluded. These results demonstrate for the first time that the conductivity of MOFs can be fine-tuned by complementary guest π-systems that can promote long-range electron delocalization by forming extended π-stacks with the redox-active ligands.

Graphical abstract: Modulating the electrical conductivity of metal–organic framework films with intercalated guest π-systems

Supplementary files

Article information

Article type
Communication
Submitted
22 Quint 2015
Accepted
09 Nov 2015
First published
10 Nov 2015

J. Mater. Chem. C, 2016,4, 894-899

Author version available

Modulating the electrical conductivity of metal–organic framework films with intercalated guest π-systems

Z. Guo, D. K. Panda, K. Maity, D. Lindsey, T. G. Parker, T. E. Albrecht-Schmitt, J. L. Barreda-Esparza, P. Xiong, W. Zhou and S. Saha, J. Mater. Chem. C, 2016, 4, 894 DOI: 10.1039/C5TC02232K

To request permission to reproduce material from this article, 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 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