Results 41 to 50 of about 70,821 (371)

Macroscopic Assembly of Chiral Hydrogen-bonded Metal-free Supramolecular Glasses for Enhanced Color-tunable Ultralong Room Temperature Phosphorescence.

Angewandte Chemie, 2023
Glassy materials, with desirable mechanical rigidity, shaping ability, high transparency, are attracting great interest in diverse fields. However, optically bulk molecule-based glasses are still rare, mainly due to limited monomeric species and harsh ...
Fei Nie, Dongpeng Yan
semanticscholar   +1 more source

Carotenoid triplet state formation in Rhodobacter sphaeroides R-26 reaction centers exchanged with modified bacteriochlorophyll pigments and reconstituted with spheroidene [PDF]

, 1993
Triplet state electron paramagnetic resonance (EPR) experiments have been carried out at X-band on Rb. sphaeroides R-26 reaction centers that have been reconstituted with the carotenoid, spheroidene, and exchanged with 132-OH-Zn-bacteriochlorophyll a and
Chynwat, V., Frank, H. A., Hartwich, G., Katheder, Ingrid, Meyer, M., Scheer, Hugo   +5 more
core   +1 more source

Zero-dimensional halide hybrid bulk glass exhibiting reversible photochromic ultralong phosphorescence

Nature Communications
Dynamically responsive materials, capable of reversible changes in color appearance and/or photoemission upon external stimuli, have attracted substantial attention across various fields.
Fei Nie, Dongpeng Yan
semanticscholar   +1 more source

Visible light-excited full-color phosphorescent material realized by carbon dots dispersed in polyacrylamide and applied to anti-counterfeiting

Materials Today Advances, 2023
Carbon dots-based phosphorescent composites have excellent room-temperature phosphorescent properties. However, the development of carbon dots-based phosphorescent materials that are excited by visible light and have adjustable colors remains a challenge.
Huiyong Wang, Bowen Shi, Hongmei Yu, Shu Yang, Guochao Nie, Shaoyan Wang, Wei Chen   +6 more
doaj   +1 more source

Persistent luminescence in Eu2+-doped compounds : a review [PDF]

, 2010
In 1996, Matsuzawa et al. reported on the extremely long-lasting afterglow of SrAl2O4:Eu2+ codoped with Dy3+ ions, which was more than 10-times brighter than the previously widely used ZnS:Cu,Co.
Poelman, Dirk, Smet, Philippe, Van den Eeckhout, Koen   +2 more
core   +3 more sources

Finely manipulating room temperature phosphorescence by dynamic lanthanide coordination toward multi-level information security

Nature Communications
Room temperature phosphorescence materials have garnered significant attention due to their unique optical properties and promising applications. However, it remains a great challenge to finely manipulate phosphorescent properties to achieve desirable ...
Longqiang Li, Jiayin Zhou, Junyi Han, Depeng Liu, Min Qi, Juanfang Xu, Guangqiang Yin, Tao Chen   +7 more
semanticscholar   +1 more source

Observation of Chiral-selective room-temperature phosphorescence enhancement via chirality-dependent energy transfer

Nature Communications, 2023
Despite increasing interest in organic room temperature phosphorescence, it can still be challenging to determine mechanism and develop practical applications.
Biao Chen, Wenhuan Huang, Guoqing Zhang
doaj   +1 more source

Fluorescence and phosphorescence from individual C$_{60}$ molecules excited by local electron tunneling

, 2005
Using the highly localized current of electrons tunneling through a double barrier Scanning Tunneling Microscope (STM) junction, we excite luminescence from a selected C$_{60}$ molecule in the surface layer of fullerene nanocrystals grown on an ultrathin
Blüm, Marie-Christine, Chergui, Majed, Patthey, François, Pivetta, Marina, Schneider, Wolf-Dieter, Ćavar, Elizabeta   +5 more
core   +1 more source

Deactivation of biacetyl triplets by cyanocobaltate(III) complexes [PDF]

, 1972
The rate of electronic energy transfer from biacetyl triplets to Co(CN)_(5)(X)^(n–)(X = CN^–, MeCN, pyridine, N_(3)^–, H_(2)O, or SCN^–) is strongly dependent on the energy of the first spin-allowed d–d transition of Co(CN)_(5)(X)^(n–), and (for X = CN^–,
Bredesen, Dale, Gray, Harry B., Hammond, George S., Wrighton, Mark   +3 more
core   +1 more source

The Effect of Purcell Cavities on the Lifetime of Thermally Activated Delayed Fluorescent Emitters

Advanced Functional Materials, EarlyView.
A pressing challenge to OLED displays and lighting is to balance high efficiency and long operational lifetime in the deep blue spectrum. The Purcell effect can reduce the triplet density and hence the probability for destructive energy‐driven triplet annihilation events that limit the OLED lifetime. Here we study of the Purcell effect on two different
Sritoma Paul, Haonan Zhao, Collin N. Muniz, Mark E. Thompson, Stephen R. Forrest   +4 more
wiley   +1 more source