Results 81 to 90 of about 40,474 (283)

Boosting the efficiency of organic persistent room-temperature phosphorescence by intramolecular triplet-triplet energy transfer

Nature Communications, 2019
The potential of organic materials with persistent room-temperature phosphorescence for high-tech application is limited by their low efficiency. Here, the authors report a strategy to enhance persistent room-temperature phosphorescence efficiency via ...
Weijun Zhao, Tsz Shing Cheung, Nan Jiang, Wenbin Huang, Jacky W. Y. Lam, Xuepeng Zhang, Zikai He, Ben Zhong Tang   +7 more
doaj   +1 more source

Phosphorescence of Pyridoxal

Journal of Biological Chemistry, 1969
Abstract The effect of pH on the relative distribution of pyridoxal structures in aqueous solution was examined by fluorescence spectroscopy. The hemiacetal structure, which is the predominant species at neutral pH, exhibits a symmetrical emission band at 378 mµ and is characterized by a quantum yield of 0.08.
J E, Wampler, J E, Churchich
openaire   +2 more sources

Enhanced Energy Transfer from a Metal–Organic Framework to a Highly Confined Organic Phosphorescent Dye

Advanced Science, EarlyView.
A phosphorescent dye was designed to fit in a hand‐to‐glove fashion into the 1D‐pore channels of MIL‐68(In). We synthesized MIL‐68(In) as powder and thin films, loaded the dye into the pores with controlled packing, and found that the phosphorescence and quantum yield are enhanced.
Bahram Hosseini Monjezi, Thomas Kasper, Gloria Hong, Changfeng Si, Robert Oestreich, Oliver Weingart, Peter G. Weidler, Christof Wöll, Eli Zysman‐Colman, Christoph Janiak, Stefan Bräse, Klaus Müller‐Buschbaum, Alexander Knebel   +12 more
wiley   +1 more source

Stretchable phosphorescent polymers by multiphase engineering

Nature Communications
Stretchable phosphorescence materials potentially enable applications in diverse advanced fields in wearable electronics. However, achieving room-temperature phosphorescence materials simultaneously featuring long-lived emission and good stretchability ...
Nan Gan, Xin Zou, Zhao Qian, Anqi Lv, Lan Wang, Huili Ma, Hu-Jun Qian, Long Gu, Zhongfu An, Wei Huang   +9 more
doaj   +1 more source

Excimer formation by steric twisting in carbazole and triphenylamine-based host materials [PDF]

, 2015
This paper presents a detailed spectroscopic investigation of luminescence properties of 4,4′-Bis(N-carbazolyl)-1,1′-biphenyl (CBP) and N,N,N’,N’-tetraphenylbenzidine (TAD) in solutions and neat films.
Alexander Rudnick (1351473), Anna Köhler (1295979), Irene Bauer (1351467), Neil C. Greenham (1234902), Pamela Schroegel (1351470), Peter Strohriegl (1351479), Sergey A. Bagnich (1351476), Stavros Athanasopoulos (1295985)   +7 more
core   +3 more sources

Bidirectional Photoswitching of a Tailored Azobenzene with Red and Far‐Red Light Involving Triplet Sensitization in an Aqueous System

Advanced Science, EarlyView.
The action spectrum of a tailored azobenzene is shifted toward bio‐optical window through the chemical modification of its singlet and triplet energy levels. Consequently, the bidirectional photo‐switching of azobenzene in physiological conditions is achieved when excited by red and far‐red light, which offers greater tissue penetration.
Mila Miroshnichenko, Helen Hölzel, Edvinas Orentas, Karolis Kazlauskas, Pedro Ferreira, Fabienne Dumoulin, Carles Alcaide, Miquel Solà, Roger Bresolí‐Obach, Santi Nonell, Pankaj Bharmoria, Kasper Moth‐Poulsen   +11 more
wiley   +1 more source

Controlling Near‐Infrared Fluorescence‐to‐Phosphorescence Ratios and Triplet Lifetimes in Rhodium(I) Dimers via Primary and Secondary Coordination Sphere Effects

Angewandte Chemie, EarlyView.
RhI dimers with bridging aryl isocyanide and di‐phosphine ligands show NIR‐I or NIR‐II fluorescence/phosphorescence, depending on the ligands and conformational rigidity at the Rh2 core. Rh‐Rh interactions can be tuned by peripheral modification of the aryl isocyanide ligand, resulting in a rigid Rh2 core and improved photophysical properties ...
Vanitha R. Naina, Giacomo Morselli, Alessandro Prescimone, Daniel Häussinger, Oliver S. Wenger   +4 more
wiley   +2 more sources

Ligand engineering to achieve enhanced ratiometric oxygen sensing in a silver cluster-based metal-organic framework

Nature Communications, 2020
Incorporating dual fluorescence and phosphorescence into a single matrix is attractive for oxygen sensing, but material design is challenging. Here the authors achieve dual fluorescence-phosphorescence from a single linker chromophore in a silver ...
Xi-Yan Dong, Yubing Si, Jin-Sen Yang, Chong Zhang, Zhen Han, Peng Luo, Zhao-Yang Wang, Shuang-Quan Zang, Thomas C. W. Mak   +8 more
doaj   +1 more source

Highly Efficient and Environmentally Stable Radiative Cooling Fabric: Integrating Photoluminescence and Hierarchical Core–Shell Fibers

Advanced Science, EarlyView.
A scalable radiative cooling fabric engineered with a multi‐layer assembly core–shell structure and integrated photoluminescent materials is reported. The fabric exhibits remarkable environmental stability, including UV resistance, mechanical durability, hydrophobicity, stain resistance, thermal stability, and flame retardancy, demonstrating its ...
Hongtao Liu, Hui Li, Yining Wang, Wei Sun, Zhuan Chen, Yongping Hou, Yongmei Zheng, Xuejian Chen, Bin Yu   +8 more
wiley   +1 more source

Multi‐Color Flexible Electrochromic Device for Smart Anti‐Counterfeiting

Angewandte Chemie, EarlyView.
A versatile information encryption‐decryption platform using Zn anode‐based electrochromic devices enables multicolor, on‐demand, and multiple encryption modes, breaking through the limitations of conventional static displays that rely on static, pre‐designed patterns. ABSTRACT Information security is critically important.
Feifei Zhao, Bingkun Huang, Kaili Gong, Bin Wang, Anni Sun, Yilin Liu, Wu Zhang, Jingwei Chen, Haizeng Li, William W. Yu   +9 more
wiley   +2 more sources