Photocatalysis Based on Metal Halide Perovskites for Organic Chemical Transformations DOI Creative Commons
Metikoti Jagadeeswararao, Raquel E. Galian, Julia Pérez‐Prieto

et al.

Nanomaterials, Journal Year: 2023, Volume and Issue: 14(1), P. 94 - 94

Published: Dec. 28, 2023

Heterogeneous photocatalysts incorporating metal halide perovskites (MHPs) have garnered significant attention due to their remarkable attributes: strong visible-light absorption, tuneable band energy levels, rapid charge transfer, and defect tolerance. Additionally, the promising optical electronic properties of MHP nanocrystals can be harnessed for photocatalytic applications through controlled crystal structure engineering, involving composition tuning via ion variations, dimensional tuning, surface chemistry modifications. Combination with other materials improve photoinduced separation building heterostructures different alignments, such as type-II, Z-scheme, Schottky heterojunctions, which fine-tune redox potentials perovskite organic reactions. This review delves into activation molecules transfer mechanisms. The further investigates impact engineering on activity, spanning a diverse array transformations, C–X bond formation (X = C, N, O), [2 + 2] [4 cycloadditions, substrate isomerization, asymmetric catalysis. study provides insights propel advancement perovskite-based photocatalysts, thereby fostering innovation in chemical transformations.

Language: Английский

Ligand Chemistry of Inorganic Lead Halide Perovskite Nanocrystals DOI Creative Commons

Nadesh Fiuza‐Maneiro,

Kun Sun, Iago López‐Fernández

et al.

ACS Energy Letters, Journal Year: 2023, Volume and Issue: 8(2), P. 1152 - 1191

Published: Jan. 26, 2023

Lead halide perovskite nanocrystals (LHP NCs) have emerged as next-generation semiconductor materials with outstanding optical and optoelectronic properties. Because of the high surface-to-volume ratio, performance colloidal stability LHP NCs largely depend on their surface chemistry, especially ligands termination. On one hand, capping improve luminescence; other hand highly dynamic binding nature is detrimental to photoluminescence NCs. In addition, functionalization desired molecules induces new functionalities such chirality, light harvesting, triplet sensitization through energy/electron transfer or use X-ray detectors. this review, we present current understanding an atomic view chemistry NCs, including crystal termination, vacancies, different types ligands. Furthermore, discuss ligand-induced functionalities, photocatalysis chirality.

Language: Английский

Citations

186
Charge Transfer from Quantum-Confined 0D, 1D, and 2D Nanocrystals DOI Creative Commons
Qiuyang Li, Kaifeng Wu, Haiming Zhu

et al.

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(9), P. 5695 - 5763

Published: April 17, 2024

The properties of colloidal quantum-confined semiconductor nanocrystals (NCs), including zero-dimensional (0D) quantum dots, 1D nanorods, 2D nanoplatelets, and their heterostructures, can be tuned through size, dimensionality, material composition. In photovoltaic photocatalytic applications, a key step is to generate spatially separated long-lived electrons holes by interfacial charge transfer. These transfer have been extensively studied recently, which the subject this Review. Review starts with summary electronic structure optical 0D-2D nanocrystals, followed advances in wave function engineering, novel way control spatial distribution holes, dimension, It discusses dependence NC on various parameters development Auger-assisted model. Recent understanding multiple exciton generation, decay, dissociation are also discussed, an emphasis carrier Finally, applications nanocrystal-based systems for photocatalysis reviewed, focusing photodriven separation recombination processes that dictate performance these materials. ends outlook remaining challenges promising future directions field.

Language: Английский

Citations

27
Engineering Metal Halide Perovskite Nanocrystals with BODIPY Dyes for Photosensitization and Photocatalytic Applications DOI Creative Commons
Alejandro Cortés‐Villena, Delia Bellezza, Carla Cunha

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(21), P. 14479 - 14492

Published: April 4, 2024

The sensitization of surface-anchored organic dyes on semiconductor nanocrystals through energy transfer mechanisms has received increasing attention owing to their potential applications in photodynamic therapy, photocatalysis, and photon upconversion. Here, we investigate the visible-light excitation two nanohybrids based CsPbBr

Language: Английский

Citations

22
Quantifying Förster Resonance Energy Transfer from Single Perovskite Quantum Dots to Organic Dyes DOI Creative Commons
Leon G. Feld, Simon C. Boehme, Viktoriia Morad

et al.

ACS Nano, Journal Year: 2024, Volume and Issue: 18(14), P. 9997 - 10007

Published: March 28, 2024

Colloidal quantum dots (QDs) are promising regenerable photoredox catalysts offering broadly tunable redox potentials along with high absorption coefficients. QDs have thus far been examined for various organic transformations, water splitting, and CO2 reduction. Vast opportunities emerge from coupling other homogeneous catalysts, such as transition metal complexes or dyes, into hybrid nanoassemblies exploiting energy transfer (ET), leveraging a large cross-section of long-lived triplet states cocatalysts. However, thorough understanding further engineering the complex operational mechanisms require simultaneously controlling surface chemistry probing dynamics at sufficient spatiotemporal resolution. Here, we probe ET single lead halide perovskite QDs, capped by alkylphospholipid ligands, to dye molecules employing single-particle photoluminescence spectroscopy single-photon We identify Förster-type spatial, temporal, photon–photon correlations in QD emission. Discrete quenching steps acceptor emission reveal stochastic photobleaching events individual allowing precise quantification efficiency, which is >70% QD–dye strong donor–acceptor spectral overlap. Our work explores processes occurring QD/molecule interface demonstrates feasibility sensitizing photocatalysts QDs.

Language: Английский

Citations

15
Emerging Opportunities of Colloidal Quantum Dots for Photocatalytic Organic Transformations DOI Creative Commons

Qinxuan Cao,

Jianning Feng,

Kin Ting Chang

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 28, 2024

Abstract Colloidal quantum dots (QDs) have emerged as a versatile photocatalyst for wide range of photocatalytic transformations owing to its high absorption coefficient, large surface‐to‐volume ratio, stability, and efficient charge energy transfer dynamics. The past decades witnessed rapid development QDs artificial photocatalysis. In this review, the unique characteristics are focused on, including size effect, compositional structural diversity, tunable surface chemistry, photophysics, that can be utilized transformations. recent advancements in organic enabled by photocatalysts summarized. opportunities highlighted tackle reactions previously unattainable with small molecule photocatalysts. Lastly, an outlook is provided future directions field.

Language: Английский

Citations

13
Extending Infrared Emission via Energy Transfer in a CsPbI3–Cyanine Dye Hybrid DOI
Jishnudas Chakkamalayath, L. Martin, Prashant V. Kamat

et al.

The Journal of Physical Chemistry Letters, Journal Year: 2024, Volume and Issue: 15(2), P. 401 - 407

Published: Jan. 4, 2024

Directing energy flow in light harvesting assemblies of nanocrystal–chromophore hybrid systems requires a better understanding factors that dictate excited-state processes. In this study, we explore interactions within the CsPbI3–cyanine dye (IR125) assembly through comprehensive set steady-state and time-resolved absorption photoluminescence (PL) experiments. Our investigations reveal quenching CsPbI3 emission alongside simultaneous enhancement IR125 fluorescence, providing evidence for singlet transfer. The evaluation both PL decay measurements yield ∼94% transfer efficiency CsPbI3–IR125 assembly. Transient spectroscopy further unveils process operates on an ultrafast time scale, occurring 400 ps with rate constant 1.4 × 1010 s–1. findings highlight potential to extend halide perovskites into infrared region, paving way display applications.

Language: Английский

Citations

11
Antimony‐Based Halide Perovskite Nanoparticles as Lead‐Free Photocatalysts for Controlled Radical Polymerization DOI
Yifan Zhu, Jiahui Zhang

Macromolecular Rapid Communications, Journal Year: 2024, Volume and Issue: 45(9)

Published: Feb. 13, 2024

Abstract Metal halide perovskites have emerged as versatile photocatalysts to convert solar energy for chemical processes. Perovskite photocatalyzed polymerization draws special attention due its straightforward synthesis process and the ability create advanced perovskite‐polymer nanocomposites. Herein, this work employs Cs 3 Sb 2 Br 9 perovskite nanoparticles (NPs) a lead‐free photocatalyst light‐controlled atom transfer radical (ATRP). NPs exhibit high reduction potential interact with electronegative bromide initiator Lewis acid sites, enabling efficient photoinduced of initiators controlled under blue light irradiation. Methacrylate monomers various functional groups are successfully polymerized, resulting polymer showcased dispersity ( Đ ) small 1.27. The living nature is confirmed by chain end fidelity kinetic studies. Moreover, serve heterogeneous photocatalysts, demonstrating recyclability reusability up four cycles. This presents promising approach overcome limitations lead‐based in polymerization, offering sustainable alternative well‐defined polymeric materials.

Language: Английский

Citations

7
Recent progress of metal halide perovskite materials in heterogeneous photocatalytic organic reactions DOI

Chunpei Yan,

Yan Qian,

Zhaohong Liao

et al.

Photochemical & Photobiological Sciences, Journal Year: 2024, Volume and Issue: 23(7), P. 1393 - 1415

Published: June 8, 2024

Language: Английский

Citations

7
Ligand Influence on the Performance of Cesium Lead Bromide Perovskite Quantum Dots in Photocatalytic C(sp3)–H Bromination Reactions DOI Creative Commons
Willi M. Amberg, Henry Lindner, Yeşim Şahin

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 28, 2025

Lead halide perovskite quantum dots (LHP QDs) CsPbX3 generate immense interest as narrow-band emitters for displays, lasers, and light sources. All QD applications rely on suited engineering of surface capping ligands. The first generation LHP QDs employed oleic acid/oleyl amine have found only a limited use in photoredox catalysis. These catalysts been reported to be unstable decompose over the course reaction, thus reducing turnover numbers (TONs) limiting their synthetic ability. Herein, impact eight distinct ligands monodisperse CsPbBr3 is reported, affording thorough comprehension performance photocatalytic C–H brominations. efforts yielded operating at extremely low catalyst loadings (<100 ppb) with TONs 9,000,000 per QD. We emphasize that optimal catalytic requires increased accessibility without compromising structural colloidal integrity. Control experiments indicated well-known such Ir(ppy)3, Ru(bpy)3Cl2, or 4CzlPN are ineffective same reaction. Mechanistic studies reveal C–Br bond reduction CH2Br2 rate-limiting step likely facilitated through interaction surface. This work outlines holistic approach toward design practically useful photocatalysts out comprising structurally soft cores dynamically bound

Language: Английский

Citations

1
Halide Perovskite Photocatalysts for Clean Fuel Production and Organic Synthesis: Opportunities and Challenges DOI Creative Commons

Siddharth Singh,

Zeinab Hamid, Ramavath Babu

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 9, 2025

Abstract The need to constrain the use of fossil fuels causing global warming is motivating development a variety photocatalysts for solar‐to‐fuel generation and chemical synthesis. In particular, semiconductor‐based have been extensively exploited in solar‐driven organic synthesis, carbon dioxide (CO 2 ) conversion into value‐added products, hydrogen (H from water O) splitting. Recently, metal halide perovskites (MHPs) emerged as an important class semiconductors heterogeneous photocatalysis owing their interesting properties. Despite key issues with long‐term stability degradation polar solvents due ionic character, there has significant progress perovskite‐based improving performance gas liquid phases. This review discusses state‐of‐the‐art using photoelectrocatalysis production halogen acid solutions, CO reduction chemicals, various transformations. different types used, design strategies overcome instability solvents, efficiencies achieved are discussed. Furthermore, outstanding challenges associated electrolytes how can be improved

Language: Английский

Citations

1