Issue 26, 2018

Plasmon-enhanced triplet–triplet annihilation upconversion of post-modified polymeric acceptors

Abstract

We report the localized surface plasmon resonance (LSPR)-enhanced triplet–triplet annihilation upconversion (TTA-UC) of polymeric acceptors containing high percentages of acceptor units. A poly[(methyl methacrylate)-co-(glycidyl methacrylate)] copolymer series with increasing glycidyl methacrylate ratio was prepared using reversible addition–fragmentation chain transfer (RAFT) polymerization. After post-modification of the glycidyl group with anthracene, the acceptor unit, a series of poly[(methyl methacrylate)-co-(2-hydroxypropyl-9-anthroate methacrylate)] (polyACA) was produced with different numbers of acceptor units. These polymeric acceptors were grafted to silver nanoparticles in order to enhance the TTA-UC intensity in the polymers with higher percentages of acceptor units, where concentration quenching usually dominates. With the assistance of the silver nanoparticle LSPR, TTA-UC intensity was enhanced from the polymeric acceptor nanocomposites using platinum octaethylporphyrin as the sensitizer to form the TTA-UC systems. This method is anticipated to improve TTA-UC in the solid-state, where higher percentages of acceptor units are required, but usually cause chromophore concentration quenching, reducing TTA-UC efficiency.

Graphical abstract: Plasmon-enhanced triplet–triplet annihilation upconversion of post-modified polymeric acceptors

Supplementary files

Article information

Article type
Paper
Submitted
21 Gen. 2018
Accepted
08 Meur. 2018
First published
08 Meur. 2018

Dalton Trans., 2018,47, 8638-8645

Plasmon-enhanced triplet–triplet annihilation upconversion of post-modified polymeric acceptors

E. G. Westbrook and P. Zhang, Dalton Trans., 2018, 47, 8638 DOI: 10.1039/C8DT00269J

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