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Molecules 2018, 23(8), 1947;

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

Department of Chemical Sciences, University of Napoli Federico II, 80126 Napoli, Italy
Department of Agriculture, University of Napoli Federico II, Portici 80055 Portici NA, Italy
Department of Industrial Engineering, University of Salerno, Fisciano 84084 SA, Italy
Department of Pharmacy, University of Salerno, Fisciano 84084 SA, Italy
Department of Electrical and Computer Engineering, Ben-Gurion University of the Negev, POB 653, Beer-Sheva 84105, Israel
Authors to whom correspondence should be addressed.
Received: 12 July 2018 / Revised: 1 August 2018 / Accepted: 2 August 2018 / Published: 4 August 2018
(This article belongs to the Special Issue Lumino and Fluorophores—Illuminating Science and Technology)
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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. View Full-Text
Keywords: DR/NIR emitter; PLQY; AIE/ACQ; DFT DR/NIR emitter; PLQY; AIE/ACQ; DFT

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Caruso, U.; Panunzi, B.; Diana, R.; Concilio, S.; Sessa, L.; Shikler, R.; Nabha, S.; Tuzi, A.; Piotto, S. AIE/ACQ Effects in Two DR/NIR Emitters: A Structural and DFT Comparative Analysis. Molecules 2018, 23, 1947.

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