scholarly journals Core and Double Bond Functionalization of Cyclopentadithiophene- Phosphaalkenes

2020 ◽  
Author(s):  
Jordann A.L. Wells ◽  
Muhammad Anwar Shameem ◽  
Arvind Kumar Gupta ◽  
Andreas Orthaber
Keyword(s):  
Double Bond ◽  
Solid State ◽  
Electronic Properties ◽  
Building Block ◽  
Metal Coordination ◽  
Bond Functionalization ◽  
Electronic Tuning ◽  
Optical And Electronic Properties ◽  
Donor And Acceptor ◽  
Solid State Structures

The heterofulvenoid cyclopentadithiophene-phosphaalkene is a versatilie building block for opto-electronic tuning with donor and acceptor moieties. Both the annulated thienyl rings and the phosphaalkene bond can be functionalised using a variety of chemical transfomations, e.g. forming C-C, C-E (E = Si, Br) bonds or oxidation and metal coordination, respectively. Solid-state structures, optical and electronic properties are probed theoretically and experimentally, illustrating the opto-electronic tailoring opportunities at this motif.

scholarly journals Core and Double Bond Functionalization of Cyclopentadithiophene- Phosphaalkenes

2020 ◽  
Author(s):  
Jordann A.L. Wells ◽  
Muhammad Anwar Shameem ◽  
Arvind Kumar Gupta ◽  
Andreas Orthaber
Keyword(s):  
Double Bond ◽  
Solid State ◽  
Electronic Properties ◽  
Building Block ◽  
Metal Coordination ◽  
Bond Functionalization ◽  
Electronic Tuning ◽  
Optical And Electronic Properties ◽  
Donor And Acceptor ◽  
Solid State Structures

The heterofulvenoid cyclopentadithiophene-phosphaalkene is a versatilie building block for opto-electronic tuning with donor and acceptor moieties. Both the annulated thienyl rings and the phosphaalkene bond can be functionalised using a variety of chemical transfomations, e.g. forming C-C, C-E (E = Si, Br) bonds or oxidation and metal coordination, respectively. Solid-state structures, optical and electronic properties are probed theoretically and experimentally, illustrating the opto-electronic tailoring opportunities at this motif.

scholarly journals Core and double bond functionalisation of cyclopentadithiophene-phosphaalkenes

2020 ◽  
Vol 7 (21) ◽  
pp. 4052-4061
Author(s):  
Jordann A. L. Wells ◽  
Muhammad Anwar Shameem ◽  
Arvind Kumar Gupta ◽  
Andreas Orthaber
Keyword(s):  
Double Bond ◽  
Metal Coordination ◽  
Carbon Framework ◽  
Electronic Tuning ◽  
Donor And Acceptor

Opto-electronic tuning by functionalisation of phosphorus heterofulvenoid cores. Oxidation, metal coordination at phosphorus, and substitution with donor and acceptor units at the carbon framework.

Lithium heterocuprates: the influence of the amido group on organoamidocuprate structures

2014 ◽  
Vol 43 (38) ◽  
pp. 14359-14367 ◽  
Author(s):  
Roberta Bomparola ◽  
Robert P. Davies ◽  
Stefan Hornaeur ◽  
Andrew J. P. White
Keyword(s):  
Solid State ◽  
Electronic Properties ◽  
Structural Isomers ◽  
Solution Equilibrium ◽  
Amido Group ◽  
Solid State Structures

The structural isomers of a number of lithium heteroamidocuprates LiCuR(NR′2) have been studied in the solid state and in solution, with the steric and electronic properties of the amido group (NR′2) shown to significantly influence the solid-state structures and the position of the solution equilibrium.

A Neutral Donor-Acceptor p-Stack: Solid-State Structures of 1 : 1 Pyromellitic Diimide-Dialkoxynaphthalene Cocrystals

1997 ◽  
Vol 50 (5) ◽  
pp. 439 ◽  
Author(s):  
Darren G. Hamilton ◽  
Daniel E. Lynch ◽  
Karl A. Byriel ◽  
Colin H. L. Kennard
Keyword(s):  
Hydrogen Bonding ◽  
Solid State ◽  
Hydrogen Bonds ◽  
Neutral Donor ◽  
Hydrogen Bonding Interactions ◽  
Donor And Acceptor ◽  
Structural Preferences ◽  
Donor Acceptor ◽  
Covalently Linked ◽  
Solid State Structures

Pyromellitic diimide forms orange-coloured cocrystals of 1 : 1 stoichiometry with dialkoxynaphthalene derivatives. The solid-state structures of two examples are presented. The cocrystal formed with 2,6-dimethoxynaphthalene presents vertical stacks of alternating π-rich and π-deficient subunits with the long axes of the respective components approximately parallel. Investigation of the packing in the cocrystal also reveals a stabilizing array of hydrogen bonds between the components of adjacent stacks. Cocrystallization with 1,5-[2-(2-hydroxyethoxy)ethoxy]naphthalene, a derivative bearing hydroxy terminated ethyleneoxy chains, gives rise to an altered structural arrangement. Alternating donor- acceptor stacks once again dominate the structure but adopt a geometry where the long axes of the constituents are essentially perpendicular. Hydrogen-bonding interactions result in the formation of continuous non-covalently linked columns of donor and acceptor subunits by linking the terminal hydroxy functions of the naphthalene component to the imide protons. The structural preferences revealed by these solid-state analyses indicate that these complexes are useful prototypes of more complex neutral supramolecular assemblies.

Eco-Friendly Techniques to Synthesize Quantum Dots

2021 ◽  
pp. 1-52
Keyword(s):  
Quantum Dots ◽  
Particle Size ◽  
Solid State ◽  
Quantum Dot ◽  
Electronic Properties ◽  
Quantum Effects ◽  
Nano Technology ◽  
Major Topic ◽  
Optical And Electronic Properties ◽  
Wet Chemical

Quantum dot defines as a nanoparticle with particle size smaller than its exciton Bohr radius. Due to the remarkable quantum effects such as optical and electronic properties, they have attracted a great deal of attention by researchers and industries. Therefore, quantum dots have become a major topic in nano-technology. Here, we describe the most recent eco-friendly techniques that have been used to synthesize quantum dots, including biogenic methods, such as plant-mediated, microorganisms-mediated methods, wet chemical and solid-state methods.

scholarly journals Morpholino-Substituted BODIPY Species: Synthesis, Structure and Electrochemical Studies

Crystals ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 36 ◽  
Author(s):  
Hawazen Hassanain ◽  
E. Stephen Davies ◽  
William Lewis ◽  
Deborah L. Kays ◽  
Neil R. Champness
Keyword(s):  
Solid State ◽  
Electronic Properties ◽  
Visible Spectrum ◽  
Methyl Groups ◽  
Electrochemical Studies ◽  
Redox Potentials ◽  
Dye Molecules ◽  
Halogen Bonds ◽  
Uv Visible ◽  
Solid State Structures

Functionalization of 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) chromophores at the 2,6-positions with iodo substituents and morpholino-substituted α-methyl groups affords molecules with strong absorbance in the visible spectrum. The effect of such substitution on the solid-state arrangements, absorption, fluorescence and electronic properties of these dye molecules is reported. The spectroscopic and spectroelectrochemical measurements display intense absorptions in the UV-visible spectrum with bathochromic shifts, in comparison to unfunctionalized BODIPY, and a positive shift in redox potentials due to functionalisation of the BODIPY core. Halogen bonds are observed in the solid-state structures of both halogenated BODIPY species, which in one case leads to the formation of an unusual halogen bonded framework.

Inducing planarity in redox-active conjugated polymers with solubilizing 3,6-dialkoxy-thieno[3,2-b]thiophenes (DOTTs) for redox and solid-state conductivity applications

2020 ◽  
Vol 8 (22) ◽  
pp. 7463-7475 ◽  
Author(s):  
Sandra L. Pittelli ◽  
Shawn A. Gregory ◽  
James F. Ponder ◽  
Shannon K. Yee ◽  
John R. Reynolds
Keyword(s):  
Solid State ◽  
Conjugated Polymers ◽  
Electronic Properties ◽  
New Family ◽  
Redox Active ◽  
Optical And Electronic Properties

A new family of redox-active dioxythienothiophene (DOTT) polymers are studied for their solid state ordering and doping susceptibility, along with their optical and electronic properties.

Anthanthrene as a large PAH building block for the synthesis of conjugated polymers

2015 ◽  
Vol 6 (27) ◽  
pp. 4859-4863 ◽  
Author(s):  
Antoine Lafleur-Lambert ◽  
Jean-Benoît Giguère ◽  
Jean-Francois Morin
Keyword(s):  
Conjugated Polymers ◽  
Electronic Properties ◽  
Organic Electronics ◽  
Building Block ◽  
Low Cost ◽  
Optical And Electronic Properties

New anthanthrene-based conjugated polymers exhibiting promising optical and electronic properties for organic electronics applications were prepared from low-cost vat orange 3.

1,1’-Biaceanthrylene and 2,2'-Biaceanthrylene: Models for Linking Larger Polycyclic Aromatic Hydrocarbons via Five-Membered Rings

2019 ◽  
Author(s):  
Yachu Du ◽  
Kyle Plunkett
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Polycyclic Aromatic Hydrocarbon ◽  
Aromatic Hydrocarbon ◽  
Electronic Properties ◽  
Aromatic Hydrocarbons ◽  
Model Systems ◽  
Redox Potentials ◽  
Dimer Model ◽  
Optical And Electronic Properties ◽  
Polycyclic Aromatic

We show that polycyclic aromatic hydrocarbon (PAH) chromophores that are linked between two five-membered rings can access planarized structures with reduced optical gaps and redox potentials. Two aceanthrylene chromophores were connected into dimer model systems with the chromophores either projected outward (2,2’-biaceanthrylene) or inward (1,1’-biaceanthrylene) and the optical and electronic properties were compared. Only the planar 2,2’-biaceanthrylene system showed significant reductions of the optical gaps (1 eV) and redox potentials in relation to the aceanthrylene monomer.<br>

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