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1. Full Text Palladium‐Catalyzed Atom‐Transfer Radical Cyclization at Remote Unactivated C(sp3)−H Sites: Hydrogen‐Atom Transfer of Hybrid Vinyl Palladium Radical Intermediates
by Ratushnyy, Maxim and Parasram, Marvin and Wang, Yang and Gevorgyan, Vladimir
Angewandte Chemie International Edition, ISSN 1433-7851, 03/2018, Volume 57, Issue 10, pp. 2712 - 2715
A novel mild, visible‐light‐induced palladium‐catalyzed hydrogen atom translocation/atom‐transfer radical cyclization (HAT/ATRC) cascade has been developed.... 
cyclizations | palladium | radicals | photochemistry | hydrogen-atom transfer | VALENT METAL-COMPLEX | TRANSLOCATION-CYCLIZATION | INTERNAL DOUBLE-BOND | REDUCTIVE ELIMINATION | CHEMISTRY, MULTIDISCIPLINARY | C-H BONDS | VISIBLE-LIGHT | ELECTRON-TRANSFER | 5-MEMBERED RINGS | LIGHT PHOTOREDOX CATALYSIS | HECK REACTION | Cyclization | Free Radicals - chemical synthesis | Free Radicals - chemistry | Light | Molecular Structure | Catalysis | Hydrogen - chemistry | Palladium - chemistry | Hydrogen | Palladium | Translocation | Hydrogen ion concentration | Intermediates | Index Medicus
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2. Full Text Electron‐Proton Transfer Mechanism of Excited‐State Hydrogen Transfer in Phenol‐(NH3)n (n=3 and 5)
by Miyazaki, Mitsuhiko and Ohara, Ryuhei and Dedonder, Claude and Jouvet, Christophe and Fujii, Masaaki
Chemistry – A European Journal, ISSN 0947-6539, 01/2018, Volume 24, Issue 4, pp. 881 - 890
Excited‐state hydrogen transfer (ESHT) is responsible for various photochemical processes of aromatics, including photoprotection of nuclear basis. Its... 
time-resolved spectroscopy | reaction mechanisms | electron transfer | solvated clusters | hydrogen transfer | Potential energy | Protons | Infrared spectroscopy | Vibration | Migration | Electron transfer | Photochemicals | I.R. radiation | Aromatics | Near infrared radiation | Ammonia | Absorption | Phenols | Clusters | Internal conversion | Hydrogen ion concentration | Electrons | Physics - Atomic and Molecular Clusters | Physics | Atomic and Molecular Clusters
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3. Full Text Excited State Interaction of Ruthenium (II) Imidazole Phenanthroline Complex [Ru(bpy)2ipH]2+ with 1,4‐Benzoquinone: Simple Electron Transfer or Proton‐Coupled Electron Transfer?
by Khade, Rahul V and Dutta Choudhury, Sharmistha and Pal, Haridas and Kumbhar, Avinash S
ChemPhysChem, ISSN 1439-4235, 09/2018, Volume 19, Issue 18, pp. 2380 - 2388
The unidirectional proton coupled electron transfer (PCET) from the excited state of Ru(II) imidazole phenanthroline complex [Ru(bpy) 2 ipH] 2+ to... 
ruthenium | proton coupled electron transfer | electrochemistry | excited states | transient absorption | Protons | Electrochemical reactions | Ruthenium | Hydrogen | Quinone | Fluorescence | Electrochemistry | Electron transport | Quinones | Imidazole | Electron transfer | Ligands | Bonding | Electrons | Quenching
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4. Full Text Dichotomous hydrogen atom transfer vs proton-coupled electron transfer during activation of X-H bonds (X = C, N, O) by nonheme iron-oxo complexes of variable basicity
by Usharani, Dandamudi and Lacy, David C and Borovik, A.S and Shaik, Sason
Journal of the American Chemical Society, ISSN 0002-7863, 11/2013, Volume 135, Issue 45, pp. 17090 - 17104
We describe herein the hydrogen-atom transfer (HAT)/proton-coupled electron-transfer (PCET) reactivity for Few-oxo and Fe-III-oxo complexes (1-4) that activate... 
DIOXYGEN ACTIVATION | TRANSFER MECHANISMS | EXCHANGE-ENHANCED REACTIVITY | EFFECTIVE CORE POTENTIALS | ABSTRACTION REACTIVITY | COMPOUND-II | BASIS-SETS | DENSITY-FUNCTIONAL THERMOCHEMISTRY | SPIN OXOIRON(IV) COMPLEX | CHEMISTRY, MULTIDISCIPLINARY | EXCITED-STATES | Protons | Oxidants - chemistry | Nitrogen - chemistry | Iron Compounds - chemistry | Oxygen - chemistry | Models, Molecular | Ferric Compounds - chemistry | Hydrogen - chemistry | Carbon - chemistry | Electrons | Index Medicus
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5. Full Text pH-sensitive MRI demarcates graded tissue acidification during acute stroke ― pH specificity enhancement with magnetization transfer and relaxation-normalized amide proton transfer (APT) MRI
by Guo, Yingkun and Zhou, Iris Yuwen and Chan, Suk-Tak and Wang, Yu and Mandeville, Emiri T and Igarashi, Takahiro and Lo, Eng H and Ji, Xunming and Sun, Phillip Zhe
NeuroImage, ISSN 1053-8119, 11/2016, Volume 141, pp. 242 - 249
pH-sensitive amide proton transfer (APT) MRI provides a surrogate metabolic biomarker that complements the widely-used perfusion and diffusion imaging.... 
Protons | Brain - diagnostic imaging | Reproducibility of Results | Rats, Wistar | Stroke - diagnostic imaging | Image Interpretation, Computer-Assisted - methods | Magnetic Resonance Imaging - methods | Rats | Male | Stroke - metabolism | Algorithms | Animals | Sensitivity and Specificity | Amides - chemistry | Amides - metabolism | Brain Chemistry | Magnetic Fields | Biomarkers - chemistry | Hydrogen-Ion Concentration | Stroke (Disease) | Magnetization | Magnetic resonance imaging | Hydrogen-ion concentration | Medical colleges | Neurosciences | Neuroimaging | Stroke | Multiple regression analysis | Segmentation | Image processing | Acidification | pH effects | Metabolism | Substantia grisea | Foreign exchange rates | Ischemia | Perfusion | Biomarkers | Diffusion | Acidosis | Veins & arteries | Index Medicus
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6. Full Text Photophysics of 2-(4′-amino-2′-hydroxyphenyl)-1H-imidazo-[4,5- c ]pyridine and its analogues: Intramolecular proton transfer versus intramolecular charge transfer
by Behera, Santosh Kumar and Karak, Ananda and Krishnamoorthy, G
Journal of Physical Chemistry B, ISSN 1520-6106, 02/2015, Volume 119, Issue 6, pp. 2330 - 2344
Photophysical characteristics of 2-(4'-amino-2'-hydroxyphenyl)-1H-imidazo-[4,5-c]pyridine (AHPIP-c) have been studied in various aprotic and protic solvents... 
LASER-DYES | CYCLODEXTRIN SOLUTIONS | EXCITED-STATE | ELECTRON-TRANSFER | COUPLED ELECTRON | DUAL FLUORESCENCE | HYDROGEN-BOND | TRANSFER ESIPT | DYNAMICS | CHEMISTRY, PHYSICAL | TRIPLE FLUORESCENCE | Protons | Amino acids | Chemical properties | Analysis
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7. Full Text Dual Site-Controlled and Lysosome-Targeted Intramolecular Charge Transfer-Photoinduced Electron Transfer-Fluorescence Resonance Energy Transfer Fluorescent Probe for Monitoring pH Changes in Living Cells
by Dong, Baoli and Song, Xuezhen and Wang, Chao and Kong, Xiuqi and Tang, Yonghe and Lin, Weiying
Analytical Chemistry, ISSN 0003-2700, 04/2016, Volume 88, Issue 7, pp. 4085 - 4091
Acidic pH is a critical physiological factor for controlling the activities and functions of lysosome. Herein, we report a novel dual site controlled and... 
SINGLE-MOLECULE FRET | RHODAMINE 6G | CHEMISTRY, ANALYTICAL | SHIFTING BICHROMOPHORIC SYSTEM | ACIDIC PH | DESIGN | 1,8-NAPHTHALIMIDE | INTRACELLULAR PH | TRAFFICKING | ICT | PROTEINS | Fluorescent Dyes - chemical synthesis | Fluorescent Dyes - chemistry | Electron Transport | Lysosomes - chemistry | Humans | Photochemical Processes | Quantum Theory | Lysosomes - metabolism | Fluorescence Resonance Energy Transfer | Molecular Structure | HeLa Cells | Tumor Cells, Cultured | Hydrogen-Ion Concentration | Electron transfer | Fluorescence | Data analysis | Cells | Index Medicus | Morpholine | Fretting | Charge | Charge transfer | Energy transfer | Coumarin
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8. Full Text Double proton transfer induced twisted intramolecular charge transfer emission in 2-(4′- N, N -Dimethylaminophenyl)imidazo[4,5-b]pyridine
by Mishra, Anasuya and Sahu, Saugata and Dash, Nihar and Behera, Santosh Kumar and Krishnamoorthy, G
Journal of Physical Chemistry B, ISSN 1520-6106, 08/2013, Volume 117, Issue 32, pp. 9469 - 9477
The spectral characteristics of N,N-dimethyl-4-(4-methyl-4H-imidazo[4,5-b]pyridin-2-yl)benzenamine (PyN-Me),... 
EXCITED-STATE | ELECTRON-TRANSFER | DUAL FLUORESCENCE | MECHANISM | LIGANDS | PYRIDINE | 2-(2'-HYDROXYPHENYL)BENZIMIDAZOLE | CHEMISTRY, PHYSICAL | PHOTOPHYSICAL PROPERTIES | DENSITY-FUNCTIONAL THEORY | DERIVATIVES | Protons | Fluorescence | Models, Molecular | Aniline Compounds - chemistry | Pyridines - chemistry | Imidazoles - chemistry | Pyridine | Charge transfer | Analysis | Methyl groups | Electric properties | Index Medicus | Solvents | Wavelengths | Methyl alcohol | Imidazole | Emission | Spectra | Hydrogen bonding
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9. Full Text Concerted O atom—proton transfer in the O—O bond forming step in water oxidation
by Zuofeng Chen and Javier J. Concepcion and Xiangqian Hu and Weitao Yang and Paul G. Hoertz and Thomas J. Meyer
Proceedings of the National Academy of Sciences of the United States of America, ISSN 0027-8424, 4/2010, Volume 107, Issue 16, pp. 7225 - 7229
As the terminal step in photosystem II, and a potential half-reaction for artificial photosynthesis, water oxidation (2H₂O → O₂ + 4e⁻ + 4H⁺) is key, but it... 
Protons | Electrodes | Molecules | Catalysts | Quantum mechanics | Chemical bases | Electron transfer | Oxidation | Chemical bonding | Catalysis | Water split | Isotope effect | O - O coupling | Base effect | SINGLE-SITE | base effect | isotope effect | MECHANISM | O-O coupling | TYROSINE | COUPLED ELECTRON-TRANSFER | MULTIDISCIPLINARY SCIENCES | water split | COMPLEXES | PHOTOSYSTEM-II | CATALYSTS | Models, Theoretical | Temperature | Models, Chemical | Oxidation-Reduction | Potentiometry - methods | Metals - chemistry | Oxygen - chemistry | Water - chemistry | Kinetics | Electrochemistry - methods | Photosynthesis | Water | Oxidation-reduction reaction | Photosystem II | Chemical properties | Analysis | Molecular structure | Atoms & subatomic particles | Chemical bonds | Quantum theory | Index Medicus | O—O coupling | Physical Sciences
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10. Full Text Excited state intramolecular proton transfer and charge transfer dynamics of a 2-(2'-Hydroxyphenyl)benzoxazole derivative in solution
by Kim, Chul Hoon and Park, Jaehun and Seo, Jangwon and Park, Soo Young and Joo, Taiha
Journal of Physical Chemistry A, ISSN 1089-5639, 05/2010, Volume 114, Issue 18, pp. 5618 - 5629
Excited state intramolecular proton transfer (ESIPT) and subsequent intramolecular charge transfer (ICT) dynamics of a 2-(2'-hydroxyphenyl)benzoxazole... 
TIME-RESOLVED FLUORESCENCE | ELECTRON-TRANSFER | STOKES SHIFT | SPECTROSCOPY | HYDROGEN-TRANSFER | POTENTIAL-ENERGY SURFACES | FEMTOSECOND DYNAMICS | PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | CHEMISTRY, PHYSICAL | FLUORESCENCE UP-CONVERSION | SOLVATION DYNAMICS | ESIPT | Fluorescence spectroscopy | Usage | Oxazoles | Analysis | Chemical properties | Charge transfer | Excited state chemistry | Electric properties
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11. Full Text Switchover of the Mechanism between Electron Transfer and Hydrogen‐Atom Transfer for a Protonated Manganese(IV)–Oxo Complex by Changing Only the Reaction Temperature
by Jung, Jieun and Kim, Surin and Lee, Yong‐Min and Nam, Wonwoo and Fukuzumi, Shunichi
Angewandte Chemie International Edition, ISSN 1433-7851, 06/2016, Volume 55, Issue 26, pp. 7450 - 7454
Hydroxylation of mesitylene by a nonheme manganese(IV)–oxo complex, [(N4Py)Mn IV (O)] 2+ ( 1 ), proceeds via one‐step hydrogen‐atom transfer (HAT) with a large... 
electron transfer | manganese(IV)-oxo complex | hydrogen atom transfer | bioinorganic chemistry | mechanism switchover | ORGANIC-CHEMISTRY | TRANSFER REDUCTION | H BOND-CLEAVAGE | HYDRIDE-TRANSFER | NUCLEOPHILIC-SUBSTITUTION | INNER-SPHERE MECHANISMS | CHEMISTRY, MULTIDISCIPLINARY | OUTER-SPHERE | ONE-STEP | METAL-IONS | NONHEME IRON(IV)-OXO COMPLEX | Electron transport | Hydrogen | Temperature | Deuterium | Triflic acid | Isotope effect | Hydroxylation | Temperature effects | Toluene | Electron transfer | Mesitylene | Hydrogen ion concentration | Manganese
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12. Full Text Hydrogen‐Atom Transfer (HAT) Initiated by Intramolecular Ligand–Metal Electron Transfer
by Herrmann, Hendrik and Kaifer, Elisabeth and Himmel, Hans‐Jörg
Chemistry – A European Journal, ISSN 0947-6539, 04/2017, Volume 23, Issue 23, pp. 5520 - 5528
Hydrogen‐atom transfer (HAT) is of key importance for several catalytic and biological processes, and provides an elegant access to C−H activation. In... 
oxidation | organic electron donor | electron transfer | hydrogen-atom transfer | coordination | AROMATISCHER HETEROCYCLEN | COPPER-COMPLEXES | UBER ZWEISTUFIGE REDOXSYSTEME | ENTATIC STATE | REACTIVITY | TURBOMOLE | CHEMISTRY, MULTIDISCIPLINARY | C-H BONDS | SELECTIVITY | VALENCE | Hydrogen | Ligands | Oxidation | Solvents | Electron transfer | Ureas | Activation | Radicals | Diamagnetism | Azines
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