Triple-Functional Smart Organic Molecules Enable Self-Enhancement Modulation of Organic Photoelectrochemical Transistor

Analytical Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Фев. 21, 2025

Organic photoelectrochemical transistor (OPECT) has undergone significant advancements, enabling an effective synergy between organic electronics and photoelectrochemistry, contributing to opto-logic gates, neuromorphic emulation, biological detection. However, feasible OPECT operation is still quite limited the associated technology evolving. This study introduces a self-enhancement facilitated by triple-functional stimuli-responsive molecules (SROM). The representative SROM sensitizes photogate selectively recognize chosen target, where reaction product serves reengineer band alignment, resulting in self-enhanced modulation. We further leverage this effect implement highly selective detection of sulfite. findings work bridge gap SROM, demonstrating potential unique implementation.

Язык: Английский

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Lattice atom-bridged chemical bond interface facilitates charge transfer for boosted photoelectric response

National Science Review, Год журнала: 2024, Номер 12(3)

Опубликована: Дек. 26, 2024

The construction of chemical bonds at heterojunction interfaces currently presents a promising avenue for enhancing photogenerated carrier interfacial transfer. However, the deliberate modulation these remains significant challenge. In this study, we successfully established p-n junction composed atomic-level Pt-doped CeO2 and 2D metalloporphyrins metal-organic framework nanosheets (Pt-CeO2/CuTCPP(Fe)), which enables realization photoelectric enhancement by regulating Fe-O bond optimizing built-in electric field. Atomic-level Pt doping in leads to an increased density oxygen vacancies lattice mutation, induces transition from adsorbed (Fe-OA) (Fe-OL). This changes charge flow pathway Fe-OA-Ce Fe-OL, effectively reducing transport distance along highway. results 2.5-fold performance compared with CeO2/CuTCPP(Fe). Furthermore, leveraging peroxidase-like activity junction, employed functional interface develop photoelectrochemical immunoassay sensitive detection prostate-specific antigens.

Язык: Английский

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CRISPR/Cas13a-Programmed Cu NCs and Z-Scheme T-COF/Ag₂S for Photoelectrochemical Biosensing of circRNA

ACS Sensors, Год журнала: 2025, Номер unknown

Опубликована: Янв. 31, 2025

Circular RNAs (circRNAs), as a class of noncoding RNA molecules with circular structure exhibit high stability and spatiotemporal-specific expression, making them ideal cancer biomarkers for liquid biopsy. Herein, new photoelectrochemical (PEC) biosensor highly sensitive circRNA assay in the whole blood lung patients was designed based on CRISPR/Cas13a-programmed Cu nanoclusters (Cu NCs) Z-scheme covalent organic framework/silver sulfide (T-COF/Ag2S) composite. This T-COF/Ag2S composite accelerates electron transfer produces an excellent initial photocurrent. When CRISPR/Cas13a precisely targets circRNA, it nonspecifically cleaves triple-helix molecular to release DNA fragments (C'/C"). After C'/C" opens hairpin probe (HP) modified electrode, hybridization chain reactions are performed produce abundant AT-rich double-stranded addition H1 H2 probes. Upon incubation Cu2+, NCs situ formed via A-Cu2+-T bonds can effectively quench photocurrent due energy process. developed PEC shows low limit detection 0.5 fM, reusability DNA-modified magnetic beads (MB-DNA) reduces cost. Moreover, accurately quantify level distinguish expression from healthy controls patients, offering strong potential clinical diagnosis.

Язык: Английский

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Reducing Intrinsic Carrier Recombination in Au/CuTCPP(Fe) Schottky Junction Through Spin Polarization Manipulation for Sensitive Photoelectrochemical Biosensing

Analytical Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Фев. 8, 2025

Schottky junctions have been widely applied to facilitate charge carrier separation through the formation of an internal electric field (IEF). However, notably restricted spatial distribution IEF weakens promotion intrinsic separation. In this study, we unveil that Au nanoparticles (NPs) in Au/CuTCPP(Fe) junction can manipulate spin polarization CuTCPP(Fe) inhibit inner recombination. Experimental investigations and theoretical calculations reveal introduction NPs leads increased population spin-polarized electrons, effectively suppressing recombination by employing mismatch between photoexcited carriers. Moreover, as a typical active site for oxygen reduction reaction, adsorption configuration on Fe single-atom sites is further optimized, resulting boosted interfacial reactions. Leveraging thiocholine-induced poisoning magnetic-enhanced photoelectric response, harnessed develop photoelectrochemical biosensing platform organophosphorus pesticides. This work offers promising method manipulating semiconductors heterojunctions mitigate

Язык: Английский

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Inorganic–Organic Bi₄Nb_1–xTa_xO₈Cl/rGO/SA-PTA Z-Scheme Heterojunction with a Third-Order Polarized Electric Field and a Fast Electron Transfer Channel for Photocatalytic Overall Water Splitting

ACS Catalysis, Год журнала: 2025, Номер unknown, С. 5155 - 5170

Опубликована: Март 12, 2025

Язык: Английский

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Charge-transfer dynamics in S-scheme photocatalyst

Nature Reviews Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Март 17, 2025

Язык: Английский

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Integrated photosystem II with MXene QDs/inverse opal TiO2 Bioelectrode for mimic Biophotovoltaic Applications

Colloids and Surfaces A Physicochemical and Engineering Aspects, Год журнала: 2024, Номер unknown, С. 135921 - 135921

Опубликована: Дек. 1, 2024

Язык: Английский

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