☆ 4.8 Article

Photocyclization by a triplet-triplet annihilation upconversion pair in water - avoiding UV-light and oxygen removal

CHEMICAL SCIENCE (2023)

相关参考文献

注意：仅列出部分参考文献，下载原文获取全部文献信息。

Article Optics

Near-infrared photon upconversion and solar synthesis using lead-free nanocrystals

Wenfei Liang et al.

Summary: Researchers have used zinc-doped CuInSe2 nanocrystals as a low-cost and non-toxic alternative to lead chalcogenides for near-infrared upconversion. Achieving upconversion to yellow with an external quantum efficiency of 16.7%, this system can be combined with photoredox catalysis for efficient near-infrared-driven organic synthesis and polymerization, overcoming the issue of reabsorption loss. Additionally, the wide light absorption range of these nanocrystals enables rapid reactions under indoor sunlight, extending the potential of "solar synthesis" in the near-infrared spectrum.

NATURE PHOTONICS (2023)

添加到收藏夹

Review Chemistry, Multidisciplinary

Nanoengineering Triplet-Triplet Annihilation Upconversion: From Materials to Real-World Applications

Tracy Schloemer et al.

Summary: Using light to control matter has long been a goal for scientists, and triplet-triplet annihilation upconversion (TTA-UC) may provide a solution by converting low energy photons to high energy photons. This process allows for precise generation of high energy photons, overcoming challenges of light attenuation. Researchers are exploring various sensitizers and annihilators for TTA-UC in solution and solid-state applications. This review discusses deployment strategies and recent examples of TTA-UC, identifying critical needs to advance it from an academic curiosity to a scalable technology.

ACS NANO (2023)

添加到收藏夹

Article Chemistry, Multidisciplinary

Facilitating [2+2] Photocycloadditions by Promoting Oxygen Tolerance and Substrate Activation in Water

Julian C. G. Kuerschner et al.

Summary: Micellar photocatalysis enables a [2+2] photocycloaddition in water under aerobic conditions by overcoming oxygen quenching through triplet-energy transfer. The use of self-assembling sodium dodecyl sulfate (SDS) micelles improves the oxygen tolerance of oxygen-sensitive reactions and activates alpha,beta-unsaturated carbonyl compounds for energy transfer. Preliminary studies demonstrate the reaction between these compounds and activated alkenes in an SDS, water, and [Ru(bpy)(3)](PF6)(2) mixture.

CHEMISTRY-A EUROPEAN JOURNAL (2023)

添加到收藏夹

Article Chemistry, Multidisciplinary

Metal-Organic Bichromophore Lowers the Upconversion Excitation Power Threshold and Promotes UV Photoreactions

Han Li et al.

Summary: This study reports a new approach to achieve control over blue-to-UV upconversion by tethering a naphthalene unit to a cyclometalated iridium-(III) complex, providing a better option for photochemical applications. The bichromophore demonstrated a higher triplet energy and longer lifetime compared to the parent complex. The threshold for blue-to-UV upconversion to shift from quadratic to linear excitation power dependence was consistently lower with the bichromophore. Additionally, the bichromophore showed long-term stability under blue irradiation and successfully drove chemical reactions that normally require UV light.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2023)

添加到收藏夹

Article Multidisciplinary Sciences

Red light-driven electron sacrificial agents-free photoreduction of inert aryl halides via triplet-triplet annihilation

Le Zeng et al.

Summary: The authors reported the photoreduction of aryl halides enabled by red light without the need for sacrificial electron donors. They achieved this by introducing a red light-absorbing photosensitizer and using the triplet-triplet annihilation strategy.

NATURE COMMUNICATIONS (2023)

添加到收藏夹

Review Chemistry, Multidisciplinary

Triplet-triplet annihilation mediated photon upconversion solar energy systems

Lukas Naimovicius et al.

Summary: Solar energy harvesting is a promising solution for global transition to carbon-neutral energy technologies. Existing technologies like photovoltaics (PV) and emerging concepts like solar fuels and molecular solar thermal energy storage (MOST) are rapidly advancing. However, addressing fundamental losses in solar energy, such as photon transmission, recombination, and thermalization, is crucial to fully exploit their potential.

MATERIALS CHEMISTRY FRONTIERS (2023)

添加到收藏夹

Review Materials Science, Multidisciplinary

Recent advances in materials for and applications of triplet-triplet annihilation-based upconversion

Sung Eun Seo et al.

Summary: Triplet-triplet annihilation upconversion (TTA-UC) technology has shown promise in efficiently generating shorter-wavelength photons, with recent strategies addressing the critical issue of oxygen quenching to improve efficiency. This technology has found applications in various fields such as bioimaging, biomedicines, photocatalysts, photovoltaics, and OLEDs, highlighting the recent advances and challenges in the field.

JOURNAL OF MATERIALS CHEMISTRY C (2022)

添加到收藏夹

Review Chemistry, Multidisciplinary

Photon Upconversion Systems Based on Triplet-Triplet Annihilation as Photosensitizers for Chemical Transformations

Raul Perez-Ruiz

Summary: Photon upconversion (UC) based on triplet-triplet annihilation (TTA) is an attractive method for switching wavelengths from lower to higher energy. This two-photon process has been widely used in various fields and offers opportunities for photoredox activation and sensitizing conventional photocatalysts. The organic community has developed new strategies for synthetic purposes utilizing this concept.

TOPICS IN CURRENT CHEMISTRY (2022)

添加到收藏夹

Article Chemistry, Multidisciplinary

Sensitizer-controlled photochemical reactivity via upconversion of red light

Felix Glaser et al.

Summary: Combining the energy input from two red photons allows for chemical reactions that would normally require blue or ultraviolet irradiation. This biphotonic excitation strategy offers advantages such as deeper penetration and less photo-damage. By altering the photosensitizer in a dual photocatalytic system, the reaction outcome can be completely altered. Different biphotonic mechanisms lead to different photochemical reactivities, which can be controlled by changing the photosensitizer.

CHEMICAL SCIENCE (2022)

添加到收藏夹

Review Chemistry, Multidisciplinary

Recent advances in triplet-triplet annihilation upconversion and singlet fission, towards solar energy applications

Andrew J. Carrod et al.

Summary: This article introduces two processes for increasing solar light utilization: triplet-triplet annihilation upconversion (TTA-UC) and singlet fission (SF). Although these two fields are often studied separately, they are actually reverse processes of each other. This article consolidates research in both areas, highlighting their similarities and common challenges, and provides recommendations for future work.

ENERGY & ENVIRONMENTAL SCIENCE (2022)

添加到收藏夹

Article Chemistry, Multidisciplinary

Red Light-Based Dual Photoredox Strategy Resembling the Z-Scheme of Natural Photosynthesis

Felix Glaser et al.

Summary: Photoredox catalysis usually employs single chromophores, and strategies combining two different light absorbers are rare. In this study, the concept of combining two red photons instead of blue or UV light was adapted for photoredox reactions on organic substrates. The research showed that red light is less damaging and has a greater penetration depth compared to blue or UV radiation. Furthermore, the study revealed the mechanistic complexity and controllability of desirable and unwanted reaction steps under multiphotonic excitation conditions.

JACS AU (2022)

添加到收藏夹

Review Chemistry, Multidisciplinary

Photon Upconversion for Photovoltaics and Photocatalysis: A Critical Review

Bryce S. Richards et al.

Summary: Opportunities for enhancing solar energy harvesting using photon upconversion have potential, but face challenges in increasing intermediate state lifetime, energy transfer rate, and generation rate significantly. Methods include the use of cosensitizers, plasmonics, and photonic structures. Additionally, in photocatalysis, there is hope for organic upconversion to enhance the performance of visible-light-active photocatalysts.

CHEMICAL REVIEWS (2021)

添加到收藏夹

Article Chemistry, Multidisciplinary

Sensitization-initiated electron transfer via upconversion: mechanism and photocatalytic applications

Felix Glaser et al.

Summary: SenI-ET is a photoredox strategy that relies on two consecutive light absorption events, and can operate via sensitized triplet-triplet annihilation upconversion. It is a useful tool in synthetic photochemistry, and can be applied to various photocatalytic reactions.

CHEMICAL SCIENCE (2021)

添加到收藏夹

Review Materials Science, Multidisciplinary

Visible-to-Ultraviolet Light Conversion: Materials and Applications

Yangyang Du et al.

Summary: Photon frequency conversion using optical materials is a common strategy for generating and utilizing light, with materials capable of visible-to-UV light conversion attracting particular attention for their potential applications in nonlinear optics, biophotonics, and environmental sciences. The four main mechanisms of visible-to-UV light conversion processes include second-harmonic generation, two-photon absorption, lanthanide-based upconversion, and triplet-triplet annihilation. Recent developments in visible-to-UV light conversion materials have shown promising emerging applications, but also highlight potential challenges for further advancement in the field.

ADVANCED PHOTONICS RESEARCH (2021)

添加到收藏夹

Review Chemistry, Multidisciplinary

Multi-Photon Excitation in Photoredox Catalysis: Concepts, Applications, Methods

Felix Glaser et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

添加到收藏夹

Article Chemistry, Multidisciplinary

A Photophysical Study of Sensitization-Initiated Electron Transfer: Insights into the Mechanism of Photoredox Activity

Max S. Coles et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

添加到收藏夹

Article Chemistry, Multidisciplinary

UV Light Generation and Challenging Photoreactions Enabled by Upconversion in Water

Bjoern Pfund et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

添加到收藏夹

Article Materials Science, Multidisciplinary

Development of highly sensitive [Ru(bpy)3]2+ - Based optical oxygen sensing thin films in the presence with Fe3O4 and Fe3O4@Ag NPs

Sibel Oguzlar

OPTICAL MATERIALS (2020)

添加到收藏夹

Article Chemistry, Multidisciplinary

Saturated Bioisosteres ofortho-Substituted Benzenes

Aleksandr Denisenko et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

添加到收藏夹

Review Chemistry, Multidisciplinary

Triplet-triplet annihilation based near infrared to visible molecular photon upconversion

Pankaj Bharmoria et al.

CHEMICAL SOCIETY REVIEWS (2020)

添加到收藏夹

Article Multidisciplinary Sciences

Photoredox catalysis using infrared light via triplet fusion upconversion

Benjamin D. Ravetz et al.

NATURE (2019)

添加到收藏夹

Article Chemistry, Physical

Synchronized biphotonic process triggering C-C coupling catalytic reactions

Carmen G. Lopez-Calixto et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2018)

添加到收藏夹

Article Chemistry, Multidisciplinary

Sensitized triplet-triplet annihilation upconversion in water and its application to photochemical transformations

Christoph Kerzig et al.

CHEMICAL SCIENCE (2018)

添加到收藏夹

Article Chemistry, Physical

Molecular Photon Upconversion Solar Cells Using Multilayer Assemblies: Progress and Prospects

Tristan Dilbeck et al.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2018)

添加到收藏夹

Article Chemistry, Multidisciplinary

Photochemical upconversion in water

Karim A. El Roz et al.

CHEMICAL COMMUNICATIONS (2017)

添加到收藏夹

Letter Chemistry, Multidisciplinary

Reply to Photoredox Catalysis: The Need to Elucidate the Photochemical Mechanism

Indrajit Ghosh et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2017)

添加到收藏夹

Article Engineering, Chemical

Light Sources for Photochemical Processes - Estimation of Technological Potentials

Maximilian Sender et al.

CHEMIE INGENIEUR TECHNIK (2017)

添加到收藏夹

Review Pharmacology & Pharmacy

Bioimaging and biodetection assisted with TTA-UC materials

Qingqing Dou et al.

DRUG DISCOVERY TODAY (2017)

添加到收藏夹

Article Chemistry, Multidisciplinary

Sensitization-Initiated Electron Transfer for Photoredox Catalysis

Indrajit Ghosh et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2017)

添加到收藏夹

Review Chemistry, Multidisciplinary

Protection of densely populated excited triplet state ensembles against deactivation by molecular oxygen

Mikhail A. Filatov et al.

CHEMICAL SOCIETY REVIEWS (2016)

添加到收藏夹

Article Chemistry, Multidisciplinary

G-Quadruplex Supramolecular Assemblies in Photochemical Upconversion

Saymore Mutsamwira et al.

CHEMISTRY-A EUROPEAN JOURNAL (2016)

添加到收藏夹

Article Chemistry, Multidisciplinary

Intragel photoreduction of aryl halides by green-to-blue upconversion under aerobic conditions

Marleen Haering et al.

CHEMICAL COMMUNICATIONS (2015)

添加到收藏夹

Article Chemistry, Multidisciplinary

Application of Visible-to-UV Photon Upconversion to Photoredox Catalysis: The Activation of Aryl Bromides

Michal Majek et al.

CHEMISTRY-A EUROPEAN JOURNAL (2015)

添加到收藏夹

Review Chemistry, Multidisciplinary

Photochemical upconversion: present status and prospects for its application to solar energy conversion

Tim F. Schulze et al.

ENERGY & ENVIRONMENTAL SCIENCE (2015)

添加到收藏夹

Review Chemistry, Multidisciplinary

Upconversion Luminescent Materials: Advances and Applications

Jing Zhou et al.

CHEMICAL REVIEWS (2015)

添加到收藏夹

Review Chemistry, Multidisciplinary

Triplet-triplet annihilation based upconversion: from triplet sensitizers and triplet acceptors to upconversion quantum yields

Jianzhang Zhao et al.

RSC ADVANCES (2011)

添加到收藏夹

Article Chemistry, Inorganic & Nuclear

Photon upconversion based on sensitized triplet-triplet annihilation

Tanya N. Singh-Rachford et al.

COORDINATION CHEMISTRY REVIEWS (2010)

添加到收藏夹

Article Chemistry, Multidisciplinary

Visible light photocatalysis as a greener approach to photochemical synthesis

Tehshik P. Yoon et al.

NATURE CHEMISTRY (2010)

添加到收藏夹

Article Chemistry, Multidisciplinary

Photochemical upconversion: Anthracene dimerization sensitized to visible light by a Ru-II chromophore

Radiy R. Islangulov et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2006)

添加到收藏夹

Article Materials Science, Multidisciplinary

Incorporation of luminescent tris(bipyridine)ruthenium(II) complex in mesoporous silica spheres and their spectroscopic and oxygen-sensing properties

P Zhang et al.

MATERIALS LETTERS (2002)

添加到收藏夹

© Peeref 2019-2024. All rights reserved.