Issue 37, 2017, Issue in Progress

Amorphous porphyrin glasses exhibit near-infrared excimer luminescence

Abstract

The amorphous nature of a series of zinc–porphyrins bearing two 3,4,5-tri((S)-3,7-dimethyloctyloxy)phenyl groups at the meso-positions, named “porphyrin glass”, were tolerant of π-conjugation engineering in ethynylene-linked dimers. The butadiyne-linked dimeric porphyrin glass formed an intermolecular excimer, which exhibited bright and exceptionally long-lived, near-infrared (NIR) luminescence at approximately 970 nm in the solid state. Therefore, porphyrin glasses overcame a general bottleneck for NIR-luminescence, such as an undesired π-stacked aggregation of a large porphyrin plane in addition to the energy gap law. The formation of amorphous molecular glasses from a series of meso-ethynylene-conjugated zinc–porphyrins, named “porphyrin glass”, is described. The butadiyne-linked dimeric porphyrin glass formed an intermolecular excimer, which exhibited solid-state, near-infrared (NIR) luminescence at approximately 970 nm.

Graphical abstract: Amorphous porphyrin glasses exhibit near-infrared excimer luminescence

Supplementary files

Article information

Article type
Paper
Submitted
07 Mar 2017
Accepted
10 Apr 2017
First published
25 Apr 2017
This article is Open Access
Creative Commons BY license

RSC Adv., 2017,7, 22679-22683

Amorphous porphyrin glasses exhibit near-infrared excimer luminescence

M. Morisue, I. Ueno, T. Nakanishi, T. Matsui, S. Sasaki, M. Shimizu, J. Matsui and Y. Hasegawa, RSC Adv., 2017, 7, 22679 DOI: 10.1039/C7RA02752D

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