Structural and photophysical properties of lanthanide complexes with planar aromatic tridentate nitrogen ligands as luminescent building blocks for triple-helical structures

1993 ◽  
Vol 32 (19) ◽  
pp. 4139-4149 ◽  
Author(s):  
Claude Piguet ◽  
Alan F. Williams ◽  
Gerald Bernardinelli ◽  
Jean Claude G. Buenzli
Keyword(s):  
Lanthanide Complexes ◽  
Photophysical Properties ◽  
Building Blocks ◽  
Helical Structures ◽  
Nitrogen Ligands

Dibenzochrysene Enables Tightly Controlled Docking and Stabilizes Photoexcited States in Dual-Pore Covalent Organic Frameworks

2019 ◽  
Author(s):  
Torben Sick ◽  
Niklas Keller ◽  
Nicolai Bach ◽  
Andreas Koszalkowski ◽  
Julian Rotter ◽  
...  
Keyword(s):  
Molecular Docking ◽  
Photophysical Properties ◽  
Visible Spectrum ◽  
Large Family ◽  
Building Blocks ◽  
Band Gaps ◽  
Docking Site ◽  
Covalent Organic Frameworks ◽  
Connected Node ◽  
Optoelectronic Applications

Covalent organic frameworks (COFs), consisting of covalently connected organic building units, combine attractive features such as crystallinity, open porosity and widely tunable physical properties. For optoelectronic applications, the incorporation of heteroatoms into a 2D COF has the potential to yield desired photophysical properties such as lower band gaps, but can also cause lateral offsets of adjacent layers. Here, we introduce dibenzo[g,p]chrysene (DBC) as a novel building block for the synthesis of highly crystalline and porous 2D dual-pore COFs showing interesting properties for optoelectronic applications. The newly synthesized terephthalaldehyde (TA), biphenyl (Biph), and thienothiophene (TT) DBC-COFs combine conjugation in the a,b-plane with a tight packing of adjacent layers guided through the molecular DBC node serving a specific docking site for successive layers. The resulting DBC-COFs exhibit a hexagonal dual-pore kagome geometry, which is comparable to COFs containing another molecular docking site, namely 4,4′,4″,4‴-(ethylene-1,1,2,2-tetrayl)-tetraaniline (ETTA). In this context, the respective interlayer distances decrease from about 4.60 Å in ETTA-COFs to about 3.6 Å in DBC-COFs, leading to well-defined hexagonally faceted single crystals sized about 50-100 nm. The TT DBC-COFs feature broad light absorption covering large parts of the visible spectrum, while Biph DBC-COF shows extraordinary excited state lifetimes exceeding 10 ns. In combination with the large number of recently developed linear conjugated building blocks, the new DBC tetra-connected node is expected to enable the synthesis of a large family of strongly p-stacked, highly ordered 2D COFs with promising optoelectronic properties.

scholarly journals Core-Substituted Naphthalene-diimides (cNDI) and Related Derivatives: Versatile Scaffold for Supramolecular Assembly and Functional Materials

2021 ◽  
Author(s):  
Anurag Mukherjee ◽  
Suhrit Ghosh
Keyword(s):  
Photophysical Properties ◽  
Supramolecular Assembly ◽  
Functional Materials ◽  
Building Blocks ◽  
Short Review ◽  
Molecular Engineering ◽  
Organic Optoelectronics ◽  
Naphthalene Diimide ◽  
Naphthalene Diimides ◽  
Derivatives Of

Naphthalene-diimide (NDI) derived building blocks have been explored extensively for supramolecular assembly as they exhibit attractive photophysical properties, suitable for applications in organic optoelectronics. Core-substituted derivatives of the NDI chromophore (cNDI) differ significantly from the parent NDI dye in terms of optical and redox properties. Adequate molecular engineering opportunities and substitution-dependent tunable optoelectronic properties make cNDI derivatives highly promising candidates for supramolecular assembly and functional material. This short review discusses recent development in the area of functional supramolecular assemblies based on cNDIs and related molecules.

Accessing Mononuclear Triphenylcyclopentadienyl Lanthanide Complexes by Using Tridentate Nitrogen Ligands: Synthesis, Structure, Luminescence, and Catalysis

2021 ◽  
Author(s):  
Daniil A. Bardonov ◽  
Pavel D. Komarov ◽  
Valeriya I. Ovchinnikova ◽  
Lada N. Puntus ◽  
Mikhail E. Minyaev ◽  
...  
Keyword(s):  
Lanthanide Complexes ◽  
Nitrogen Ligands

scholarly journals Fluorinated azobenzenes as supramolecular halogen-bonding building blocks

2019 ◽  
Vol 15 ◽  
pp. 2013-2019 ◽  
Author(s):  
Esther Nieland ◽  
Oliver Weingart ◽  
Bernd M Schmidt
Keyword(s):  
Solid State ◽  
Dft Calculations ◽  
Visible Light ◽  
Half Life ◽  
Photophysical Properties ◽  
Bathochromic Shift ◽  
Halogen Bonding ◽  
Building Blocks ◽  
Partial Overlap

ortho-Fluoroazobenzenes are a remarkable example of bistable photoswitches, addressable by visible light. Symmetrical, highly fluorinated azobenzenes bearing an iodine substituent in para-position were shown to be suitable supramolecular building blocks both in solution and in the solid state in combination with neutral halogen bonding acceptors, such as lutidines. Therefore, we investigate the photochemistry of a series of azobenzene photoswitches. Upon introduction of iodoethynyl groups, the halogen bonding donor properties are significantly strengthened in solution. However, the bathochromic shift of the π→π* band leads to a partial overlap with the n→π* band, making it slightly more difficult to address. The introduction of iodine substituents is furthermore accompanied with a diminishing thermal half-life. A series of three azobenzenes with different halogen bonding donor properties are discussed in relation to their changing photophysical properties, rationalized by DFT calculations.

Synthesis, Crystal Structure, and Photophysical Properties of Novel (Monophthalocyaninato)lanthanide Complexes Stabilized by an Organometallic Tripodal Ligand

2009 ◽  
Vol 2009 (9) ◽  
pp. 1243-1247 ◽  
Author(s):  
Hanzhong Ke ◽  
Wai-Kwok Wong ◽  
Wai-Yeung Wong ◽  
Hoi-Lam Tam ◽  
Chun-Ting Poon ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Lanthanide Complexes ◽  
Photophysical Properties ◽  
Tripodal Ligand

Highly‐Luminescent DTTA‐Appended Water‐Soluble Lanthanide Complexes of 4‐(Het)aryl‐2,2′‐bipyridines: Synthesis and Photophysical Properties

2019 ◽  
Vol 4 (20) ◽  
pp. 6377-6381 ◽  
Author(s):  
Alexey P. Krinochkin ◽  
Dmitry S. Kopchuk ◽  
Grigory A. Kim ◽  
Il'ya N. Ganebnykh ◽  
Igor S. Kovalev ◽  
...  
Keyword(s):  
Lanthanide Complexes ◽  
Photophysical Properties ◽  
Water Soluble

Designed synthesis and photophysical properties of multifunctional hybrid lanthanide complexes

RSC Advances ◽  
2013 ◽  
Vol 3 (29) ◽  
pp. 11367 ◽  
Author(s):  
Hai-Bing Xu ◽  
Jian-Guo Deng ◽  
Bin Kang
Keyword(s):  
Lanthanide Complexes ◽  
Photophysical Properties ◽  
Designed Synthesis

Different crystal structure and photophysical properties of lanthanide complexes with 5-bromonicotinic acid

2004 ◽  
Vol 177 (10) ◽  
pp. 3805-3814 ◽  
Author(s):  
Song Yi-Shan ◽  
Yan Bing ◽  
Chen Zhen-Xia
Keyword(s):  
Crystal Structure ◽  
Lanthanide Complexes ◽  
Photophysical Properties
Sign in / Sign up

Export Citation Format

Share Document