Jump to main content
Jump to site search


Controllable Supramolecular Chain Aggregation through Nano-steric Hindrance Functionalization for Multi-color Larger-area Electroluminescence

Abstract

Suppression of the hierarchical chain aggregation in light-emitting π-conjugated polymers (LCPs) by steric hindrance-functionalized strategy is significant for restraining aggregation induced long-wavelength emission as well as improving device performance. Herein, for the inhibition of molecular aggregation and enhancement of luminescence efficiency, a series of multi-dimensional nano-steric units were introduced into supramolecular polyfluorene (PPFOH) by copolymerization, with the aim of integrating the advantages of the nano-steric hindrance effect on molecular emission. The introduction of our nano-steric units can effectively disrupt interchain hydrogen-bonding interaction but also allow for their excellent self-assembly behavior to form zero (nanosphere) and one-dimensional (helical nanowires) nanostructure, similar DNA molecules. Moreover, the green band emission at 500~590 nm can be effectively suppressed with increasing the size and dimension of nano-steric units. Furthermore, larger-area PLEDs (4 × 4 cm) can be fabricated with the tunable color electroluminescence (EL) from orange, yellow, green to blue. These results indicated that nano-steric-hindrance functionalization is a superior and convenient approach to suppress interchain aggregation, tune self-assembly behavior and improve optoelectronic properties of LCPs.

Back to tab navigation

Supplementary files

Publication details

The article was received on 27 Mar 2018, accepted on 03 Jun 2018 and first published on 07 Jun 2018


Article type: Paper
DOI: 10.1039/C8TC01431K
Citation: J. Mater. Chem. C, 2018, Accepted Manuscript
  •   Request permissions

    Controllable Supramolecular Chain Aggregation through Nano-steric Hindrance Functionalization for Multi-color Larger-area Electroluminescence

    M. Xu, W. Wang, L. Bai, M. Yu, Y. Han, J. Lin, X. Zhang, H. Ling, Z. Lin, L. Huang, L. Xie, J. Zhao, J. Wang and W. Huang, J. Mater. Chem. C, 2018, Accepted Manuscript , DOI: 10.1039/C8TC01431K

Search articles by author

Spotlight

Advertisements