Since their introduction, dye-sensitized solar cells (DSCs) have achieved huge success at a laboratory level. Recently, research is concentrated to visualize large DSC modules the commercial platform. In that aspect, we tested structurally simple porphyrin-based dye SK6 and anthracene-based CW10 for DSCs application under simulated 1 sun (AM 1.5G) indoor light sources. These two dyes can be easily synthesized yet are efficient with cell performances of ca. 5.42% 5.75% (without...

We prepared two phenylacetate end-capping oligoesters from recycled bisphenol A (RBPA), which is obtained a phase-transfer agent-assisted basic degradation of waste polycarbonate (WPC). The were successfully applied as epoxy-curing agents. curing with epoxy based on the chemistry 4-dimethylaminopyridine (DMAP)-catalyzed model reaction phenyl benzoate and glycidyl ether. Mechanical thermal properties oligoesters/epoxy-cured thermosets investigated discussed. Glass transition temperatures...

The global market for polycarbonate (PC) increases steadily because of its heat resistance, toughness, and optical transparency. To achieve sustainability, the waste (WPC) should be recycled. This work reports a 100% atom-efficiency upcycling WPC to WPC-derived aldehyde (WPC-CHO). Then, poly(carbonate imine) vitrimers (PCIs) based on WPC-CHO two aromatic diamines were prepared. Generally, polyimines can cleave in mild acidic conditions such as 0.1 M HCl(aq) seldom show good thermal tensile...

A series of zinc porphyrin dyes YD22–YD28 were synthesized and used for dye-sensitized solar cells. Dyes YD26–YD28 consist (ZnP) as core unit, arylamine (Am) electron-donating group, p-ethynylbenzoic acid (EBA) an electron-withdrawing/-anchoring group. The YD22–YD25 contain additional phenylethynylene group (PE) bridged between Am ZnP units. influence the PE unit on molecular properties well photovoltaic performances investigated via photophysical electrochemical studies density functional...

Covalent organic frameworks (COFs) are of great interest in the energy and optoelectronic fields due to their high porosity, superior thermal stability, highly ordered conjugated architecture, which beneficial for charge migration, separation, light harvesting. In this study, polyimide COFs (PI-COFs) synthesized through condensation reaction pyromellitic dianhydride (PMDA) with tris(4-aminophenyl) amine (TAPA) then doped TiO2 photoelectrode a dye-sensitized solar cell (DSSC) co-work N719 dye...

In this work, we have synthesized a novel porphyrin dye named SK7, which contains two N, N-diarylamino moieties at β-positions as electron-donating units and one carboxy phenylethynyl moiety the meso-position an electron-withdrawing, anchoring group. This was tested for application in dye-sensitized solar cells. The light-harvesting behavior of SK7 YD2 investigated using UV-vis absorption density functional calculation. electron transport properties TiO2/dye/electrolyte interface SK7-...

Conventional epoxy resins can meet the requirement for engineering applications in which high glass transition and thermal stability are essential, but they show no degradability or recyclability. Vitrimers, with covalent adaptable networks, provide reprocessability degradability. However, thermally activated bond-exchange reactions prevent composites from being thermal-mechanically stable at temperatures. Therefore, developing epoxy/carbon fiber is attractive industrial environmental...

Multi‐functional molecules with spirocyclic acetal structures have recently emerged as attractive monomers to prepare high‐performance polymers, which may subsequently be de‐polymerized and recycled under specific physicochemical conditions. Spirocyclic can formed by condensation of a suitable aldehyde or ketone polyol so that the functionalities necessary for polymerization are retained. In general, rigid units efficiently enhance polymer glass transition temperature (Tg). This typically...

The retention time of resistor type memory devices could be tuned by the linkage groups between porphyrin moiety and DSDA on PIs. Moreover, metal zinc also plays an important role in further tuning behavior.

We report a robust, 100% atom-efficiency strategy for preparing waste polycarbonate (WPC)-derived epoxy resin. To demonstrate the preparation process, we perform pyridine-catalyzed model reaction between diphenyl carbonate (DPC) and diglycidyl ether of bisphenol A (DGEBA) in molar ratio 1:2. After epoxy-equivalent titration two-dimensional nuclear magnetic resonance (2D-NMR) analysis, confirm that product is bis(1-(4-(2-(4-(oxiran-2-ylmethoxy)phenyl)propan-2-yl)phenoxy)-3-phenoxypropan-2-yl)...

In this study, highly mesoporous TiO 2 composite photoanodes composed of functional {001}‐faceted nanoparticles (NPs) and commercially available 20 nm NPs are employed in efficient porphyrin‐sensitized solar cells together with cobalt polypyridyl‐based mediators. Large (approximately 50 nm) exposed {001} facets prepared using a fast microwave‐assisted hydrothermal (FMAH) method. These unique favorably mitigate the aggregation porphyrin on surface strongly facilitate mass transport...

An intrinsic flame-retardant moiety, 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO), is incorporated into oligo(2,6-dimethyl-1,4-phenylene ether) (OPE), and four phosphorus-containing telechelic OPE resins are synthesized. The first synthesized with a para phenyl methacrylate end group (OPE-PM); the second meta groups (OPE-OPM); third vinyl benzyl ether (OPE-VBE); fourth (OPE-OVBE). All self-cured samples showed good flexibility, high temperature (Tg = 216 to 250 °C, Td5% > 400...

Manufactured poly(carbonate acetal) vitrimers from waste polycarbonate and studied their properties along with closed-loop chemical recycling.

Abstract We present a facile and scalable method to prepare water‐dispersed polyvinylpyrrolidone‐capped graphene (PVP‐graphene) nanoplatelets from an ordinary graphite powder. The 3 D hydrophobic powder was exfoliated into 2 hydrophilic PVP‐graphene by inducing intercalation through the PVP chains high‐powered sonication. were characterized using XRD, field‐emission scanning electron microscopy, TEM, Raman spectroscopy, X‐ray photoelectron they found be nonoxidative have dimensions of few...

In an integrated circuit, signal propagation loss is proportional to the frequency, dissipation factor (Df), and square root of dielectric constant (Dk). The becomes obvious as we move high-frequency communication. Therefore, a polymer having low Dk Df critical for copper-clad laminates at higher frequencies. For this purpose, 4-vinylbenzyl ether phenoxy-2,3,5,6-tetrafluorophenylene-terminated OPE (VT-OPE) resin was synthesized its properties were compared with thermoset commercial OPE-2St...

The steady increase in waste polycarbonate (WPC) necessitates innovative recycling methods, particularly closed-loop recycling, to enhance sustainability. In this research, an method is introduced for converting WPC into a derivative comprised of multiple amines, referred as WPC-NH2. We then created poly(carbonate-imines) (PCIs) and their carbon fiber-reinforced plastics (CFRPs) through condensation process involving WPC-NH2 bifunctional aldehydes. These PCIs displayed vitrimer...