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

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.

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

The Journal of Physical Chemistry A ◽

10.1021/jp9901085 ◽

1999 ◽

Vol 103 (20) ◽

pp. 3864-3875 ◽

Cited By ~ 45

Author(s):

Nicolas DiCésare ◽

Michel Belletête ◽

Ernesto Rivera Garcia ◽

Mario Leclerc ◽

Gilles Durocher

Keyword(s):

Intermolecular Interactions ◽

Photophysical Properties

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Molecular design of organoplatinum(II) complexes through a DFT/TDDFT study: Photophysical properties and intermolecular interactions

Computational and Theoretical Chemistry ◽

10.1016/j.comptc.2019.01.019 ◽

2019 ◽

Vol 1150 ◽

pp. 91-101 ◽

Cited By ~ 2

Author(s):

Hongyan Ning ◽

Xiuxue Huang ◽

Li Yang ◽

Jiaxu Zhang

Keyword(s):

Intermolecular Interactions ◽

Molecular Design ◽

Photophysical Properties

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Intermolecular Interactions of Perylene diimides in Photovoltaic Blends of Fluorene Copolymers: Disorder Effects on Photophysical Properties, Film Morphology and Device Efficiency

Advanced Functional Materials ◽

10.1002/adfm.200800356 ◽

2008 ◽

Vol 18 (20) ◽

pp. 3189-3202 ◽

Cited By ~ 76

Author(s):

Panagiotis E. Keivanidis ◽

Ian A. Howard ◽

Richard H. Friend

Keyword(s):

Intermolecular Interactions ◽

Photophysical Properties ◽

Film Morphology ◽

Perylene Diimides ◽

Disorder Effects ◽

Device Efficiency

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

10.21203/rs.3.rs-1084454/v1 ◽

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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