Results 71 to 80 of about 21,548 (229)

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

Functional Metal Complexes for Solar–Light‐Driven Energy Conversion

Advanced Materials, EarlyView.
This review provides an exhaustive summary of the recent advancements of functional metal complexes in solar‐to‐electrical, ‐chemical, and ‐thermal energy conversion, comprising material categories, design strategies, underlying principles of operation, and identified improvement of performances.
Yanyan Qin, Dou Luo, Miao Zhang, Wai‐Yeung Wong   +3 more
wiley   +1 more source

Hydrogen Atom Transfer Induces Photodegradation in Carbonyl‐Based Multi‐Resonance TADF Emitters

Angewandte Chemie, EarlyView.
Boosting triplet harvesting in N/C═O MR‐TADF emitters unexpectedly induces rapid photodegradation under oxygen‐free conditions. Spectroscopic studies reveal that triplet excited states trigger hydrogen‐atom transfer from solvent to the carbonyl unit, driven by triplet energetics and hydrogen electrophilicity.
Changfeng Si, Elvie F. P. Beaumont, Jenn Zi Yu Tan, Mitchell J. Demchuk, Zachary M. Hudson   +4 more
wiley   +2 more sources

Efficient Room-Temperature Luminescence of Indole-5-Carboxamide in Poly(vinyl alcohol) Films

Photochem
N-phenyl-1H-Indole-5-carboxamide (Ind-CA) exhibits previously unknown room-temperature phosphorescence (RTP) when immobilized in poly (vinyl alcohol) film (PVA film).
Bong Lee, Agnieszka Jablonska, Rajveer Sagoo, Danh Pham, Trang Thien Pham, Sergei V. Dzyuba, Zygmunt Gryczynski, Ignacy Gryczynski   +7 more
doaj   +1 more source

Continuous Condensed Triplet Accumulation for Irradiance‐Induced Anticounterfeit Afterglow

Advanced Science, 2023
Afterglow room‐temperature emission that is independent of autofluorescence after ceasing excitation is a promising technology for state‐of‐the‐art bioimaging and security devices.
Ende Hopsah Badriyah, Kikuya Hayashi, Bahadur Sk, Rina Takano, Takayuki Ishida, Shuzo Hirata   +5 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

Transparent Perovskite Light‐Emitting Diodes with Conductive Oxide Top Electrodes

Advanced Materials, EarlyView.
Transparent perovskite light‐emitting diodes (TrPeLEDs) enable simultaneous display and transparency, expanding application possibilities. Using a metal oxide buffer layer and pulsed laser deposition, TrPeLEDs with diverse compositions and architectures are demonstrated.
Michele Forzatti, Sergio Martínez‐Saiz, Morena Cervino, Edoardo Stanzani, Sandra Jenatsch, Qingsen Zeng, Joo Sung Kim, Dong‐Hyeok Kim, Eojin Yoon, Tae‐Woo Lee, Daniel Tordera, Henk J. Bolink   +11 more
wiley   +1 more source

Triple Matrix Confinement‐Induced Ultrabright Afterglow From Carbon Dots With Multivariate Responsive Afterglow Colors for Advanced Dynamic Information Encryption

Angewandte Chemie, EarlyView.
A novel carbon dots material (BUL‐CDs) with an initial afterglow brightness (406 cd m−2) far exceeding that of other afterglow luminescent materials was developed. Furthermore, the BUL‐CDs exhibited time‐dependent afterglow colors, excitation‐dependent afterglow colors, and thermochromic afterglow in response to triplet variables.
Yupeng Liu, Yiming Hao, Yi Li, Xiaofan Xia, Xichang Ou, Xue Wu, Jun Wu, Ruifeng Zheng, Dongbo Guo, Shi Chen, Jing Li, Jinyang Zhu, Qijun Li, Songnan Qu   +13 more
wiley   +2 more sources

Iridium complex, a phosphorescent light-emitting diode material, serves as a novel chemical probe for imaging hypoxic tumor tissues [PDF]

, 2007
Iridium complex, a promising organic light-emitting diode for next generation television displays, emits phosphorescence. Phosphorescence is quenched by oxygen. We used this oxygen-quenching feature for imaging tumor hypoxia.
Keigo Endo, Masahiro Hosaka, Seiji Tobita, Shaojuan Zhang, Toshitada Yoshihara, Toshiyuki Takeuchi, Yasuhiko Iida   +6 more
core   +1 more source

Hybridized Charge‐Transfer Window within a Fully Conjugated Multi‐Resonance Thermally Activated Delayed Fluorescence Framework for Ultrafast Reverse Intersystem Crossing and High‐Efficiency in Deep‐Blue Organic Light‐Emitting Diodes

Advanced Materials, EarlyView.
A hybridized charge‐transfer window combining short‐range and long‐range charge transfer is realized within a fully conjugated multi‐resonance thermally activated delayed fluorescence framework. The resulting excited‐state hybridization minimizes the singlet–triplet energy gap (0.04 eV) and enables ultrafast reverse intersystem crossing (krISC = 2.1 ...
Uisung Lee, Kyungwoo Jeong, Sunwoo Kang, Jun Yeob Lee   +3 more
wiley   +1 more source