Intermolecular Interactions in Conjugated Oligothiophenes. 3. Optical and Photophysical Properties of Quaterthiophene and Substituted Quaterthiophenes in Various Environments

1999 ◽  
Vol 103 (20) ◽  
pp. 3864-3875 ◽  
Author(s):  
Nicolas DiCésare ◽  
Michel Belletête ◽  
Ernesto Rivera Garcia ◽  
Mario Leclerc ◽  
Gilles Durocher
Keyword(s):  
Intermolecular Interactions ◽  
Photophysical Properties

Palladium(II) Acetylide Complexes with Pincer-Type Ligands: Photophysical Properties, Intermolecular Interactions, and Photo-cytotoxicity

2016 ◽  
Vol 12 (1) ◽  
pp. 145-158 ◽  
Author(s):  
Faan-Fung Hung ◽  
Shui-Xing Wu ◽  
Wai-Pong To ◽  
Wai-Lun Kwong ◽  
Xiangguo Guan ◽  
...  
Keyword(s):  
Intermolecular Interactions ◽  
Photophysical Properties

Exploring the Relationship between Intermolecular Interactions and Solid-State Photophysical Properties of Organic Co-Crystals

2018 ◽  
Vol 123 (14) ◽  
pp. 9311-9322 ◽  
Author(s):  
Rohit Bhowal ◽  
Suprakash Biswas ◽  
Athulbabu Thumbarathil ◽  
Apurba L. Koner ◽  
Deepak Chopra
Keyword(s):  
Solid State ◽  
Intermolecular Interactions ◽  
Photophysical Properties ◽  
The Relationship

scholarly journals Intermolecular interactions-photophysical properties relationships in phenanthrene-9,10-dicarbonitrile assemblies

2020 ◽  
Vol 1199 ◽  
pp. 126789 ◽  
Author(s):  
Anastasiia M. Afanasenko ◽  
Alexander S. Novikov ◽  
Tatiana G. Chulkova ◽  
Yakov M. Grigoriev ◽  
Ilya E. Kolesnikov ◽  
...  
Keyword(s):  
Intermolecular Interactions ◽  
Photophysical Properties

Photoexcitations in Oligothiophenes: The Role of Conformation Mobility and Intermolecular Interactions.

1999 ◽  
Vol 598 ◽  
Author(s):  
Chiara Botta ◽  
Silvia Destri ◽  
William Porzio ◽  
Gianni Bongiovanni ◽  
Andrea Mura ◽  
...  
Keyword(s):  
Optical Properties ◽  
Solid State ◽  
Intermolecular Interactions ◽  
Photophysical Properties ◽  
Supramolecular Organization ◽  
Relaxation Processes ◽  
Chain Packing ◽  
Backbone Conformation ◽  
Packing Arrangement

ABSTRACTThe optical properties of substituted and unsubstituted oligothiophenes are analysed with respect to their supramolecular organization in the solid state. The spectra typical of the isolated molecules are obtained by reducing the intermolecular interactions by both lateral chain substitution and by inclusion in a host organic crystal. The photophysical properties of the weakly interacting oligothiophenes are strongly influenced by their backbone conformation and conformational mobility. Oligomers included in the channels of a guest crystal show fast torsional relaxation processes during the photoexcitation. Powders of β-substituted oligomers display optical properties dependent on the conformation of their particular chain packing arrangement.

scholarly journals Position of Biphenyl Group Turning The Structure and Photophysical Property of D-π-π-A Prototype Fluorescent Material

2021 ◽  
Author(s):  
Dong-En Wu ◽  
Qin-Yuan Yin ◽  
Qing-Hui Guo
Keyword(s):  
Intermolecular Interactions ◽  
Electronic Structures ◽  
Photophysical Properties ◽  
Molecular Packing ◽  
Photophysical Property ◽  
Dilute Solution ◽  
Fluorescent Material ◽  
Column Structure ◽  
Layer Structures

Abstract Three novel D-π-π-A prototype compounds, namely, (E)-2-(3-([1,1'-biphenyl]-2-yl)-1-(9H-fluoren-2-yl) allylidene) malononitri-le (2-BAM), (E)-2-(3-([1,1'-biphenyl]-3-yl)-1-(9H-fluoren-2-yl)allylidene) malononitri-le (3-BAM), (E)-2-(3-([1,1'-biphenyl]-4-yl)-1-(9H-fluoren-2-yl)allylidene) malononitri-le (4-BAM) were synthesized. Furthermore, the structures and photophysical properties of three compounds were compared. Molecules of 2-BAM were packed into a 1D column structure with H-aggregation. However, both of 3-BAM and 4-BAM were packed into 3D layer structures with J-aggregation, respectively. Although three compounds all showed highly twisted molecular geometries, their molecular packing and intermolecular interactions were different. Because of the differences in electronic structures of molecules, the three compounds displayed different emission behaviors in solid and dilute solution. This study indicated that changing the position of biphenyl groups is an effective way to turn the structures and photophysical properties of such D-π-π-A prototype fluorescent material.

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