Journal of Materials Chemistry C, Год журнала: 2024, Номер unknown
Опубликована: Янв. 1, 2024
The use of triplet–triplet annihilation upconversion (TTA-UC) to drive photoswitching the energy-storing norbornadiene–quadricyclane (NBD–QC) isomers in solid-state is demonstrated.
Язык: Английский
Light Science & Applications, Год журнала: 2024, Номер 13(1)
Опубликована: Июнь 6, 2024
Abstract Imagine if it were possible to create 3D objects in the palm of your hand within seconds using only a single photonic chip. Although printing has revolutionized way we nearly every aspect modern society, current printers rely on large and complex mechanical systems enable layer-by-layer addition material. This limits print speed, resolution, portability, form factor, material complexity. there have been recent efforts developing novel photocuring-based that utilize light transform matter from liquid resins solid advanced methods, they remain reliant bulky systems. To address these limitations, combine fields silicon photonics photochemistry propose first chip-based printer. The proposed system consists millimeter-scale chip without any moving parts emits reconfigurable visible-light holograms up into simple stationary resin well non-mechanical printing. Furthermore, experimentally demonstrate stereolithography-inspired proof-of-concept version printer beam-steering integrated optical phased array visible-light-curable resin, showing for time. work demonstrates steps towards highly-compact, portable, low-cost solution next generation printers.
Язык: Английский
Процитировано
6
Accounts of Chemical Research, Год журнала: 2025, Номер unknown
Опубликована: Янв. 6, 2025
ConspectusLight-driven polymerizations and their application in 3D printing have revolutionized manufacturing across diverse sectors, from healthcare to fine arts. Despite the popularized notion that with "imagination is only limit", we others scientific community identified fundamental hurdles restrict our capabilities this space. Herein, describe
Язык: Английский
Процитировано
0
ACS Central Science, Год журнала: 2025, Номер unknown
Опубликована: Фев. 21, 2025
Triplet-triplet annihilation photon upconversion (TTA-UC) systems hold great promise for applications in energy, 3D printing, and photopharmacology. However, their optimization remains challenging due to the need precise tuning of sensitizer annihilator concentrations under oxygen-free conditions. This study presents an automated, high-throughput platform discovery TTA-UC systems. Capable performing 100 concentration scans just two hours, generates comprehensive maps critical parameters, including quantum yield, triplet energy transfer efficiency, threshold intensity. Using this approach, we identify key loss mechanisms both established novel At high porphyrin-based concentrations, yield losses are attributed self-quenching via aggregation triplet-triplet (sensitizer-TTA). Additionally, reverse (RTET) at elevated levels increases excitation thresholds. Testing sensitizer-annihilator pairs confirms these mechanisms, highlighting opportunities molecular design improvements. automated offers a powerful tool advancing research other photochemical studies requiring low oxygen levels, intense laser excitation, minimal material use.
Язык: Английский
Процитировано
0
RSC Applied Polymers, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
Early-career researchers from around the world summarize recent developments and present visions for future of vat photopolymerization 3D printing.
Язык: Английский
Процитировано
0
Coordination Chemistry Reviews, Год журнала: 2024, Номер 523, С. 216266 - 216266
Опубликована: Окт. 15, 2024
Язык: Английский
Процитировано
2
Molecules, Год журнала: 2024, Номер 29(10), С. 2203 - 2203
Опубликована: Май 8, 2024
The triplet annihilator is a critical component for triplet–triplet annihilation upconversion (TTA-UC); both the photophysical properties of and intermolecular orientation have pivotal effects on overall efficiency TTA-UC. Herein, we synthesized two supramolecular annihilators A-1 A-2 by grafting 9,10-diphenylanthracene (DPA) fragments, which been widely used as TTA-UC, macrocyclic host—pillar[5]arenes. In A-1, DPA units was random, while, in A-2, were pushed to parallel arrangement intramolecular hydrogen-bonding interactions. compounds showed very similar host–guest binding affinities toward electron-deficient guests, but totally different TTA-UC emissions. UC quantum yield could be optimized 13.7% when an alkyl ammonia chain-attaching sensitizer S-2 used, only 5.1% achieved. Destroying interactions adding MeOH significantly decreased emissions, demonstrating that orientations contributed greatly These results should beneficial designs provide new promising strategy enhancing
Язык: Английский
Процитировано
1
Science China Chemistry, Год журнала: 2024, Номер 67(11), С. 3868 - 3874
Опубликована: Сен. 23, 2024
Язык: Английский
Процитировано
0
Journal of Materials Chemistry C, Год журнала: 2024, Номер unknown
Опубликована: Янв. 1, 2024
The use of triplet–triplet annihilation upconversion (TTA-UC) to drive photoswitching the energy-storing norbornadiene–quadricyclane (NBD–QC) isomers in solid-state is demonstrated.
Язык: Английский
Процитировано
0