Issue 7, 2017

Insights into the origin of aggregation enhanced emission of 9,10-distyrylanthracene derivatives

Abstract

9,10-Distyrylanthracene (DSA) and its four derivatives are investigated by both steady state and ultrafast spectroscopy to reveal the intrinsic photophysical process upon excitation. Intramolecular rotation around the vinyl moiety plays an important role in the whole photophysical process in addition to the electronic properties of the peripheral substituents. In dilute solutions, DSA derivatives possess a twisted structure in the ground state that eventually relaxes to a planar structure within picoseconds. The fluorescence process is dominated by the relaxed excited state, and the quantum yield is affected by competition between the nonradiative and radiative deactivations. The enhanced fluorescence of the molecular aggregates originates from the optically allowed S1–S0 transition together with the suppressed nonradiative deactivation via molecular stacking. These findings provide an in-depth understanding of the origin of the aggregation enhanced emission process, and may be applicable for the fine design of DSA based molecules with enhanced fluorescence and novel structures beyond DSA.

Graphical abstract: Insights into the origin of aggregation enhanced emission of 9,10-distyrylanthracene derivatives

Supplementary files

Article information

Article type
Research Article
Submitted
22 ဇန် 2017
Accepted
28 ဖေ 2017
First published
01 မတ် 2017

Mater. Chem. Front., 2017,1, 1422-1429

Insights into the origin of aggregation enhanced emission of 9,10-distyrylanthracene derivatives

J. Zhang, S. Ma, H. Fang, B. Xu, H. Sun, I. Chan and W. Tian, Mater. Chem. Front., 2017, 1, 1422 DOI: 10.1039/C7QM00032D

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