Electron-transfer rates and electronic coupling factors for ferrocene groups attached to gold electrodes via oligo(phenylethynyl) "molecular wire" bridges of variable length structure are reported. Attachment was achieved thiol at the end bridge opposite ferrocene. Bridge structures were designed promote strong between ferrocene, thereby promoting rapid electron transport over long distances. The effects substituents on phenyl rings in addressed. Bridges containing three six phenylethynyl...

Reported here are two types of curved π-molecules that π-isoelectronic to planar hexabenzocoronene (HBC) but forced out planarity either by an embedded seven-membered ring or atom crowding at the fjord region. Embedding a heptagon in HBC leads novel saddle-shaped molecule 1, whose π-backbone is slightly less than previously reported [7]circulene terms average Gauss curvature, surprisingly much more rigid [7]circulene. Overcrowded regions derivatives hexabenzoperylene (HBP) 2a,b lead both...

This study presents a new type of negatively curved nanographene (C86 H32 ) that contains an unprecedented pattern heptagons. A tert-butylated derivative C86 was successfully synthesized using tetrabenzodipleiadiene as key building block. synthesis involved ring expansion reaction step to form the seven-membered rings in framework tetrabenzodipleiadiene. The single-crystal structure reveals saddle-shaped molecule with highly bent naphthalene moiety at center polycyclic backbone. As found...

This study explores a series of non-helical overcrowded tetrabenzoheptafulvalene derivatives, which are different from the parent (1) by avoiding terminal C–C double bonds, detailing their synthesis, characterization and syn/antiisomerization. The most interesting findings this that syn anti isomers three derivatives (3–5) can be switched photo- thermal isomerizations both in very high yields. predominance isomer photoisomerization has been explained with DFT calculations terms arrangement...

Abstract Synthetic hydrogels are unique tissue mimics but rarely reproduce the strain‐stiffening properties of native tissues. This mechanical mismatch impairs performance in practical applications. Inspired by crimped structure collagenous tissues, a series composed curved parallel fibers developed. These constructed from bundle intertwisted nanofibrils short alkyl side chain‐modified polymer chains. hierarchical organization enables exquisitely cascaded deformation that facilitates...

Abstract The bulk radical polymerization of bis(aziridine) with molten elemental sulfur resulted in brittle, cross‐linked polymers. However, when the was treated presence an organobase, ring‐opening reaction aziridine oligosulfide anions occurred, leading to formation linear polymers by step‐growth polymerization. These newly synthesized possess repeating units containing a sulfonamide or amide functional moiety and bonds average segment about two. A small molecular model confirmed...

Abstract This study presents a new type of negatively curved nanographene (C 86 H 32 ) that contains an unprecedented pattern heptagons. A tert ‐butylated derivative C was successfully synthesized using tetrabenzodipleiadiene as key building block. synthesis involved ring expansion reaction step to form the seven‐membered rings in framework tetrabenzodipleiadiene. The single‐crystal structure reveals saddle‐shaped molecule with highly bent naphthalene moiety at center polycyclic backbone. As...

Thermoelectric (TE) generators, based on thermoelectric materials, can efficiently convert thermal energy into electricity via the Seebeck effect, showing great promise for waste-heat recovery research. Recent advancements in TE composites of conductive polymer/carbon nanotubes have been significant. This study evaluates properties organic films and generators by combining naphthalene diimide (NDI) polymers with single-walled carbon (SWCNTs). The results reveal that P(NDI-HTO)/SWCNT...

In addition to the commercialized accelerator bis-(sodium sulfopropyl)-disulfide (SPS), we designed and synthesized two other disulfide compounds, namely, sulfohexyl)-disulfide (SHS) sulfoethyl)-disulfide (SES), investigate effect of their alkyl chain lengths on microvia filling performance. The galvanostatic measurements show that Cl− different accelerator-containing solutions leads same synergistic effects at a current density 20 mA/cm2, indicating interactions between accelerators are...

Accelerators are indispensable additives for super-conformal copper electrodeposition, which has been widely applied in the fabrication of integrated circuits (ICs), printed circuit boards (PCBs), and advanced semiconductor packaging substrates. Currently, bis-(sodium sulfopropyl)-disulfide (SPS) sodium 3-mercapto-1-propanesulfonate (MPS) most used accelerators electroplating. However, owing to limited operating concentration range, frequent measurements SPS (or MPS) during electroplating...

Abstract In this paper, isotropic copper nanoparticles (CuNPs) were successfully sythesized by using Cu(CH 3 COO) 2 and ascorbic acid in absolute ethanol solution. With the addition of polyvinylpyrrolidone (PVP) protective additive, size distribution range synthesized CuNPs was significantly reduced from 650±415 nm to 51±12 nm. Electrodeposition analysis revealed that PVP could greatly suppress reduction Cu but had no prominent effects on deposition mechanism. Based potentiostatic results, a...

Abstract Organic charge transfer complexes (CTCs) or electron donor–acceptor have been intensively studied as organic semiconductors conductors in electronics. Herein, the composite of CTCs and single‐walled carbon nanotubes (SWCNTs) is both p‐type n‐type thermoelectric materials for flexible generators. are formed by [1]benzothieno[3,2‐ b ][1]benzothiophene (BTBT) derivatives with different side chains donors 2,3,5,6‐tetrafluoro‐7,7,8,8‐tetracyanoquinodimethane (F 4 TCNQ) acceptors. The...

In this study, MCC nanosheets (MXene@Cur-Ce(III)) with excellent antioxidant properties, namely, MXene@curcumin (MC) doped Ce(III), were synthesized using a straightforward one-step method. According to the potentiodynamic polarization (PDP) test, had corrosion-inhibitory effects as mixed inhibitor. Subsequently, these integrated into water-based epoxy resin (WEP) fabricate nanocomposite coating. The results revealed that wear rate of WEP coating containing 0.4 wt % (4-MCCW) was lower than...

To explore the predictive value of new comprehensive respiratory mechanics parameters elastic power (EP) and normalized to compliance (Cst-EP) in evaluation severity 28-day prognosis ARDS patients.The MIMIC-III database was used identify patients under invasive mechanical ventilation for at least 48 h. Their baseline data ventilatory variables were collected. EP, energy, driving pressure calculated according corresponding formulas. assessing evaluated. The correlation between Cst-EP...

Levelers exhibiting high microvia-filling power and wide operating-concentration ranges are required for the development of additives in copper super-conformal electroplating. In this study, a novel structure based on triphenylmethane (TPM-1) was synthesized investigated as leveler The galvanostatic measurements cyclic voltammetry stripping experiments show that TPM-1 is stronger inhibitor than Janus Green B ion reduction essential creating convection-dependent adsorption behavior. Copper...

Daytime passive radiative cooling has emerged as an energy-saving technique. However, market penetration of current daytime cooling-related membranes is still miniscule due to deficiencies in scalability, recyclability, and robustness. This work successfully addresses these issues by concurrently imparting the following features a designed polymeric cooler: (1) cost-effective recyclable raw materials that highlight sustainability; (2) scalable yet exquisite structure-engineering strategy...