Synthesis of diketopyrrolopyrrole and anthraquinone-based polymers of D–A1–D–A2 architecture by direct arylation polycondensation and designing inorganic/organic nano-heterostructured photoanodes for visible light water splitting

Abstract

This article reports synthesizing two polymers of donor-acceptor1-donor-acceptor2 (D-A1-D-A2) architecture employing the direct heteroarylation poly-condensation reaction. Both the first polymer (PAQTDPP) and the second polymer (PAQBTDPP) comprise anthraquinone (AQ) and...

Multifunctional Ultrathin Amorphous CoFe-Prussian Blue Analogue Catalysts for Efficiently Boosting the Oxygen Evolution Activity of Antimony-Doped TiO2 Nanorods Photoanode

“…11 The O 1s peak appearing at 532.8 eV can be assigned to the oxygen vacancies and/or the hydroxide group present in the semiconductor. 11,26,27 The Co 2p spectrum shows two intense peaks at 782 and 797.8 eV, which can be assigned to the spin-orbit doublets of Co 2p 3/2 and Co 2p 1/2 , respectively. The result confirms the +3 oxidation state of Co. 23,28 The Fe 2p core-level spectrum in Figure 2d shows a prominent peak centered at 710.6 eV and a weak peak at 721 eV, assigned to the Fe 2p 3/2 and Fe 2p 1/2 , respectively, indicating the +3 oxidation state of Fe in KCo[Fe(CN) 6 ].…”

Photoelectrochemical Production of Hydrogen Peroxide with TiO2 and 1,5-Di(thien-2-yl)-9,10-anthraquinone via a Selective Two-Electron Oxygen Reduction Reaction in the Two-Compartment Cell

“…The high-resolution XPS spectrum of Ti 2p (Figure a) contains the peaks centered at 458.99 and 464.73 eV representing Ti 2p 1/2 and Ti 2p 3/2 states, respectively, of the Ti­(IV) oxidation state. The other peaks positioned at 458 and 462.93 eV correspond to the Ti 2p 3/2 and 2p 1/2 states associated with the +3 oxidation state of Ti, respectively . The peak at 459.5 eV appears due to Ti 4+ in differential geometry .…”

“…The other peaks positioned at 458 and 462.93 eV correspond to the Ti 2p 3/2 and 2p 1/2 states associated with the +3 oxidation state of Ti, respectively. 37 The peak at 459.5 eV appears due to Ti 4+ in differential geometry. 38 The XPS spectrum of O 1s (Figure 3b) consists of two peaks at 530.11 and 532.21 eV corresponding to the lattice oxygen (O L ) and V O , respectively, in the TiO 2 matrix.…”

Photocatalytic H2O2 Production by Thiophene‐Coupled Benzotriazole and Anthraquinone‐Based D−A‐Type Polymer Nanoparticles

“…The relevant NMR spectra are given in the Supporting Information. Besides the Stille coupling, the direct arylation polycondensation (DArP) method [ 15 ] was also used to synthesize PAQBTz polymer (Scheme S1, Supporting Information), yielding 73%.…”

“…The syntheses of compounds 1 and 2 (see Scheme 1) were accomplished according to the previous reports. [13][14][15] Subsequently, compound 2 was converted to 3 through a base-mediated stannylation reaction using lithium diisopropylamide (LDA) as a base and tri-n-butylstannyl chloride as the electrophile with an 80% yield. The polymer PAQBTz was synthesized through a typical Stille cross-coupling using Pd 2 (dba) 3 •CHCl 3 /P(o-tol) 3 in toluene as the solvent with a 60% yield.…”