Results 51 to 60 of about 21,674 (243)

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

Highly efficient, dual state emission from an organic semiconductor

, 2013
We report highly efficient, simultaneous fluorescence and phosphorescence (74% yield) at room temperature from a single molecule ensemble of (BzP)PB dispersed into a polymer host. The slow phosphorescence (208 ms lifetime) is very efficient (50%) at room
Baldo, Marc A., Prins, Ferry, Reineke, Sebastian, Seidler, Nico, Tisdale, William A., Yost, Shane R.   +5 more
core   +1 more source

Structure of the Cytoplasmic Loop between Putative Helices II and III of the Mannitol Permease of Escherichia coli: A Tryptophan and 5-Fluorotryptophan Spectroscopy Study [PDF]

, 2008
In this work, four single tryptophan (Trp) mutants of the dimeric mannitol transporter of Escherichia coli, EIImtl, are characterized using Trp and 5-fluoroTrp (5-FTrp) fluorescence spectroscopy.
Broos J., Broos J., Broos J., Broos J., Broos J., Callis P. R., Chen Y., Cioni P., Eftink M. R., Galley W. C., Gonnelli M., Gonnelli M., Koning R. I., Lakowicz J. R., Legler P. M., Lengeler J. W., Liu T. Q., Meech S. R., Nguyen T. X., Robillard G. T., Robillard G. T., Ross J. B. A., Strambini G. B., Sugiyama J. E., Swaving Dijkstra D., van Montfort B. A., van Montfort R. L. M., Veldhuis G., Veldhuis G., Veldhuis G., Vervoort E. B., Vos E. P., Winkler G. R.   +32 more
core   +3 more sources

Two‐Photon Excited Near‐Infrared Phosphorescence Based on Secondary Supramolecular Confinement

Advanced Science, 2022
Organic phosphorescence materials have received wide attention in bioimaging for bio‐low toxicity and large Stokes. Herein, a design strategy to achieve near‐infrared (NIR) excitation and emission of organic room‐temperature phosphorescence through two ...
Xin‐Kun Ma, Xiaolu Zhou, Jing Wu, Fang‐Fang Shen, Yu Liu   +4 more
doaj   +1 more source

Room temperature phosphorescent wood hydrogel

Nature Communications
Room temperature phosphorescent (RTP) hydrogels exhibit great potential but show poor mechanical performance (Tensile strengthen
Ruixia Liu, Hongda Guo, Shouxin Liu, Jian Li, Shujun Li, Tony D. James, Zhijun Chen   +6 more
openaire   +3 more sources

Red Room Temperature Phosphorescence from Lignin

Angewandte Chemie
Abstract Materials with red room‐temperature phosphorescence (RTP) derived from sustainable resources are crucial but rarely reported. Here, we produced red RTP materials from lignin. Lignin was covalently modified with Upy (1‐(6‐isocyanatohexyl)‐3‐(6‐methyl‐4‐oxo‐1,4‐dihydropyrimidin‐2‐yl) urea) to obtain Lig‐Upy.
Hongda Guo, Huanjie Cheng, Ruixia Liu, Xiaoxia Chen, Luyao Wang, Chenhui Yang, Shujun Li, Shouxin Liu, Jian Li, Qingjiang Pan, Tony D. James, Zhijun Chen   +11 more
openaire   +2 more sources

Enabling long-lived organic room temperature phosphorescence in polymers by subunit interlocking

Nature Communications, 2019
Long-lived room temperature phosphorescence (LRTP) is important in organic photonics but exploring a universal approach to obtain LRTP in amorphous polymers is challenging.
Suzhi Cai, Huili Ma, Huifang Shi, He Wang, Xuan Wang, Leixin Xiao, Wenpeng Ye, Kaiwei Huang, Xudong Cao, Nan Gan, Chaoqun Ma, Mingxing Gu, Lulu Song, Hai Xu, Youtian Tao, Chunfeng Zhang, Wei Yao, Zhongfu An, Wei Huang   +18 more
doaj   +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

Urea-formaldehyde resin room temperature phosphorescent material with ultra-long afterglow and adjustable phosphorescence performance

Nature Communications
Organic room-temperature phosphorescence materials have attracted extensive attention, but their development is limited by the stability and processibility.
Wensheng Xu, Bowei Wang, Shuai Liu, Wangwang Fang, Qinglong Jia, Jiayi Liu, Changchang Bo, Xilong Yan, Yang Li, Ligong Chen   +9 more
doaj   +1 more source

Room-temperature phosphorescence from metal-free polymer-based materials

Cell Reports Physical Science, 2022
Summary: Room-temperature phosphorescence (RTP) has received extensive attention in recent years due to its various potential applications. Pure organic RTP materials may overcome the shortcomings of harsh preparation conditions and high toxicity ...
Yanxiang Gong, Jie Yang, Manman Fang, Zhen Li   +3 more
doaj   +1 more source