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AIE/ACQ Effects in Two DR/NIR Emitters: A Structural and DFT Comparative Analysis.

ABSTRACT: The effects of aggregation-induced emission (AIE) and of aggregation caused quenching (ACQ) were observed and discussed on two solid materials based on a phenylenevinylene (PV) and a dicyano-PV structure. The brightest emitter in solid films shows a high fluorescence quantum yield in the deep red/near IR (DR/NIR) region (75%). The spectroscopic properties of the two crystalline solids have been described and compared in terms of crystallographic data and time dependent DFT analysis. The influence of the cyano-substituents on AIE/ACQ mechanism activation was discussed.

SUBMITTER: Caruso U 

PROVIDER: S-EPMC6222639 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature

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AIE/ACQ Effects in Two DR/NIR Emitters: A Structural and DFT Comparative Analysis.

Caruso Ugo U   Panunzi Barbara B   Diana Rosita R   Concilio Simona S   Sessa Lucia L   Shikler Rafi R   Nabha Shiran S   Tuzi Angela A   Piotto Stefano S  

Molecules (Basel, Switzerland) 20180804 8

The effects of aggregation-induced emission (AIE) and of aggregation caused quenching (ACQ) were observed and discussed on two solid materials based on a phenylenevinylene (PV) and a dicyano-PV structure. The brightest emitter in solid films shows a high fluorescence quantum yield in the deep red/near IR (DR/NIR) region (75%). The spectroscopic properties of the two crystalline solids have been described and compared in terms of crystallographic data and time dependent DFT analysis. The influenc  ...[more]

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