Functionalizable 1H -Indazoles by Palladium Catalyzed Aza-Nenitzescu Reaction: Pharmacophores to Donor-Acceptor Type Multi-Luminescent Fluorophores

2018 ◽  
Vol 7 (10) ◽  
pp. 2094-2104 ◽  
Author(s):  
Jith C. Janardhanan ◽  
Rakesh K. Mishra ◽  
Gourab Das ◽  
Suresh Sini ◽  
Purushothaman Jayamurthy ◽  
...  
Keyword(s):  
Nenitzescu Reaction ◽  
Palladium Catalyzed ◽  
Donor Acceptor

scholarly journals Donor Acceptor Copolymers from Cyclopentannulation Polymerizations with Dicyclopenta[cd,jk]pyrene and Dicyclopenta[cd,lm]perylene Acceptors

2020 ◽  
Author(s):  
Ain Uddin ◽  
Kyle Plunkett
Keyword(s):  
Thin Film ◽  
Cyclic Voltammetry ◽  
Light Absorption ◽  
Visible Region ◽  
Optoelectronic Properties ◽  
Band Gaps ◽  
Molecular Weights ◽  
Palladium Catalyzed ◽  
Donor Acceptor ◽  
Film Absorption

A series of donor-acceptor copolymers with dicyclopenta[cd,jk]pyrene and dicyclopenta[cd,lm]perylene acceptor units was prepared via palladium catalyzed cyclopenta-annulation reactions. The acceptor units were paired with diethynyl containing donor groups based on benzo[1,2-b:4,5-b']dithiophene, thieno[3,2-b]thiophene, and 4-octyl-4H-dithieno[3,2-b:2',3'-d]pyrrole to create six polymer variants. The cyclopentannulation polymerization resulted in copolymers with molecular weights (Mn) of 6-14 kDa and broad light absorption in the visible region with band gaps of 1.38-1.85 eV. The synthetic methodology, as well as optoelectronic properties, including thin-film absorption and cyclic voltammetry, of the donor-acceptor copolymers are presented.<br> <br><br>

scholarly journals Synthesis and optoelectronic properties of benzoquinone-based donor–acceptor compounds

2019 ◽  
Vol 15 ◽  
pp. 2914-2921
Author(s):  
Daniel R Sutherland ◽  
Nidhi Sharma ◽  
Georgina M Rosair ◽  
Ifor D W Samuel ◽  
Ai-Lan Lee ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Delayed Fluorescence ◽  
Optoelectronic Properties ◽  
Donor Group ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Palladium Catalyzed ◽  
Donor Acceptor

Herein, we report a mild and efficient palladium-catalyzed C–H functionalization method to synthesize a series of benzoquinone (BQ)-based charge-transfer (CT) derivatives in good yields. The optoelectronic properties of these compounds were explored both theoretically and experimentally and correlations to their structures were identified as a function of the nature and position of the donor group (meta and para) attached to the benzoquinone acceptor. Compound 3, where benzoquinone is para-conjugated to the diphenylamine donor group, exhibited thermally activated delayed fluorescence (TADF) with a biexponential lifetime characterized by a prompt ns component and a delayed component of 353 μs.

scholarly journals Synthesis and optical properties of new 5'-aryl-substituted 2,5-bis(3-decyl-2,2'-bithiophen-5-yl)-1,3,4-oxadiazoles

2017 ◽  
Vol 13 ◽  
pp. 313-322 ◽  
Author(s):  
Anastasia Sergeevna Kostyuchenko ◽  
Tatyana Yu Zheleznova ◽  
Anton Jaroslavovich Stasyuk ◽  
Aleksandra Kurowska ◽  
Wojciech Domagala ◽  
...  
Keyword(s):  
Optical Properties ◽  
Quantum Chemical ◽  
Emission Spectra ◽  
Aryl Halides ◽  
Aryl Substituent ◽  
Tddft Calculations ◽  
Terminal Substituent ◽  
Bluish Green ◽  
Palladium Catalyzed ◽  
Donor Acceptor

New photoluminescent donor–acceptor–donor (DAD) molecules, namely 5'-aryl-substituted 2,5-bis(3-decyl-2,2'-bithiophen-5-yl)-1,3,4-oxadiazoles were prepared by palladium-catalyzed coupling from readily available compounds such as ethyl 3-decyl-2,2'-bithiophene-5-carboxylate and aryl halides. The obtained compounds feature increasing bathochromic shifts in their emission spectra with increasing aryl-substituent size yielding blue to bluish-green emissions. At the same time, their absorption spectra are almost independent from the identity of the terminal substituent with λmax values ranging from 395 to 405 nm. The observed trends are perfectly predicted by quantum chemical DFT/TDDFT calculations carried out for these new molecules.

Mixed-Ligand Approach to Palladium-Catalyzed Direct Arylation Polymerization: Synthesis of Donor–Acceptor Polymers Containing Unsubstituted Bithiophene Units

2019 ◽  
Vol 53 (1) ◽  
pp. 158-164 ◽  
Author(s):  
Masayuki Wakioka ◽  
Hazuki Morita ◽  
Nobuko Ichihara ◽  
Masahiko Saito ◽  
Itaru Osaka ◽  
...  
Keyword(s):  
Mixed Ligand ◽  
Direct Arylation ◽  
Palladium Catalyzed ◽  
Donor Acceptor ◽  
Direct Arylation Polymerization

scholarly journals Synthesis of a 1,2-Dithienylethene-Containing Donor-Acceptor Polymer via Palladium-Catalyzed Direct Arylation Polymerization (DArP)

Molecules ◽  
2018 ◽  
Vol 23 (4) ◽  
pp. 981 ◽  
Author(s):  
Masayuki Wakioka ◽  
Natsumi Yamashita ◽  
Hiroki Mori ◽  
Yasushi Nishihara ◽  
Fumiyuki Ozawa
Keyword(s):  
Direct Arylation ◽  
Palladium Catalyzed ◽  
Donor Acceptor ◽  
Direct Arylation Polymerization

Efficient palladium-catalyzed synthesis of unsymmetrical donor—acceptor biaryls and polyaryls

1990 ◽  
Vol 390 (3) ◽  
pp. 389-398 ◽  
Author(s):  
Christian Amatore ◽  
Anny Jutand ◽  
Serge Negri ◽  
Jean-Francois Fauvarque
Keyword(s):  
Palladium Catalyzed ◽  
Donor Acceptor

Synthesis and optoelectronic investigations of triarylamines based on naphtho[2,3-f]quinoxaline-7,12-dione core as donor–acceptors for n-type materials

RSC Advances ◽  
2016 ◽  
Vol 6 (65) ◽  
pp. 60084-60093 ◽  
Author(s):  
Azam M. Shaikh ◽  
Bharat K. Sharma ◽  
Sajeev Chacko ◽  
Rajesh M. Kamble
Keyword(s):  
Electron Donor ◽  
Electron Acceptor ◽  
Bond Forming ◽  
Palladium Catalyzed ◽  
Donor Acceptor

We have synthesized a new series of fully characterized donor–acceptor systems (2–7) involving electron donor triarylamines and electron acceptor naphtho[2,3-f]quinoxaline-7,12-dione by employing palladium catalyzed C–N bond forming amination reactions in good yields.

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