Amorphous porphyrin glasses exhibit near-infrared excimer luminescence

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 intermole...

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Bibliographic Details
Published inRSC advances Vol. 7; no. 37; pp. 22679 - 22683
Main Authors Morisue, Mitsuhiko, Ueno, Ikuya, Nakanishi, Takayuki, Matsui, Takafumi, Sasaki, Sono, Shimizu, Masaki, Matsui, Jun, Hasegawa, Yasuchika
Format Journal Article
LanguageEnglish
Published 01.01.2017
Subjects
Agglomeration
Bearing
Dimers
Energy gap
Excimers
Glass
Luminescence
Porphyrins
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Summary: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.
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ISSN:2046-2069
2046-2069
DOI:10.1039/C7RA02752D