Journal of the American Chemical Society (J AM CHEM SOC)

Publisher: American Chemical Society; American Chemical Society; Marian S. Carson Collection (Library of Congress), American Chemical Society

Journal description

The Journal of the American Chemical Society, founded in 1879, is the flagship journal of the American Chemical Society and a highly esteemed journal in the field. This periodical is devoted to the publication of research papers in all fields of chemistry and publishes approximately 13,000 pages of new chemistry a year. Published weekly, JACS provides research crucial to the field of chemistry. The Journal of the American Chemical Society publishes articles, communications to the Editor, book reviews, and computer software reviews.

Current impact factor: 12.11

Impact Factor Rankings

2015 Impact Factor Available summer 2016
2014 Impact Factor 12.113
2013 Impact Factor 11.444
2012 Impact Factor 10.677
2011 Impact Factor 9.907
2010 Impact Factor 9.019
2009 Impact Factor 8.58
2008 Impact Factor 8.091
2007 Impact Factor 7.885
2006 Impact Factor 7.696
2005 Impact Factor 7.419
2004 Impact Factor 6.903
2003 Impact Factor 6.516
2002 Impact Factor 6.201
2001 Impact Factor 6.079
2000 Impact Factor 6.025
1999 Impact Factor 5.537
1998 Impact Factor 5.725
1997 Impact Factor 5.65
1996 Impact Factor 5.948
1995 Impact Factor 5.263
1994 Impact Factor 5.039
1993 Impact Factor 5.365
1992 Impact Factor 5.298

Impact factor over time

Impact factor

Additional details

5-year impact 11.73
Cited half-life 8.00
Immediacy index 2.61
Eigenfactor 0.82
Article influence 3.29
Website Journal of the American Chemical Society website
Other titles Journal of the American Chemical Society, Review of American chemical research
ISSN 0002-7863
OCLC 1226990
Material type Periodical, Internet resource
Document type Journal / Magazine / Newspaper, Internet Resource

Publisher details

American Chemical Society

  • Pre-print
    • Author cannot archive a pre-print version
  • Restrictions
    • Must obtain written permission from Editor
    • Must not violate ACS ethical Guidelines
  • Post-print
    • Author cannot archive a post-print version
  • Restrictions
    • If mandated by funding agency or employer/ institution
    • If mandated to deposit before 12 months, must obtain waiver from Institution/Funding agency or use AuthorChoice
    • 12 months embargo
  • Conditions
    • On author's personal website, pre-print servers, institutional website, institutional repositories or subject repositories
    • Non-Commercial
    • Must be accompanied by set statement (see policy)
    • Must link to publisher version
    • Publisher's version/PDF cannot be used
    • If mandated sooner than 12 months, must obtain waiver from Editors or use AuthorChoice
    • Reviewed on 07/08/2014
  • Classification
    ​ white

Publications in this journal

  • Journal of the American Chemical Society 09/2015; DOI:10.1021/jacs.5b07994
  • Journal of the American Chemical Society 09/2015; DOI:10.1021/jacs.5b07574
  • Yining Ji · Erik Plata · Christopher S. Regens · Michael Hay · Michael Schmidt · Thomas M. Razler · Yuping Qiu · Peng Geng · Yi Hsiao · Thorsten Rosner · Martin D. Eastgate · Donna G Blackmond
    Journal of the American Chemical Society 09/2015; DOI:10.1021/jacs.5b01913
  • Journal of the American Chemical Society 09/2015; DOI:10.1021/jacs.5b08316
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    ABSTRACT: In spite of decades of active attention, important problems remain pending in the catalysis of dioxygen reduction by iron porphyrins in water in terms of selectivity and mechanisms. This is what happens e.g. for the distinction between heterogeneous and homogeneous catalysis for soluble porphyrins, for the estimation H2O2 / H2O product selectivity and the determination the reaction mechanism in the two situations. Taking as example the water soluble iron tetrakis(N-methyl-4-pyridyl)porphyrin, procedures are described that allows one to operate this distinction and determine the H2O2/ H2O product ratio in each case separately. It is noteworthy that, despite the weak adsorption of the iron (II) porphyrin on the glassy carbon electrode, the contribution of the adsorbed complex to catalysis rivals that of its solution counterpart. Depending on the electrode potential, two successive catalytic pathways have been identified and characterized in terms of current-potential responses and H2O2/ H2O selectivity. These observations are interpreted in the framework of the commonly accepted mechanism for catalytic reduction of dioxygen by iron porphyrins, after checking its compatibility with a change of oxygen concentration and of pH. The difference in intrinsic catalytic reactivity between the catalyst in the adsorbed state and in solution is also discussed. The role of heterogeneous catalysis with iron tetrakis(N-methyl-4-pyridyl)porphyrin has been overlooked in previous studies because of its water solubility. The main thrust of the present contribution is therefore to call attention, by means of this emblematic example, on such possibilities so as to reach a correct identification of the catalyst, of its performances, and reaction mechanism. This is a question of general interest, the more so that reduction of dioxygen remains a topic of high importance in the context of contemporary energy challenges.
    Journal of the American Chemical Society 09/2015; DOI:10.1021/jacs.5b06834
  • Yun-Zhi Tang · Yin-mei Yu · Jian-bo Xiong · Yu-Hui Tan · He-Rui Wen
    Journal of the American Chemical Society 09/2015; DOI:10.1021/jacs.5b08061
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    ABSTRACT: Recently reported colloidal lead halide perovskite QDs with tunable photoluminescence (PL) wavelengths covering the whole visible spectrum and exceptionally high (50%-90%) PL quantum yields (QYs) constitute a new family of functional materials with potential applications in light harvesting and emitting devices. By transient absorption spectroscopy, we showed that the high PL QYs (~79%) can be attributed to negligible electron or hole trapping pathways in CsPbBr3 QDs: ~94% of lowest excitonic states decayed with a single-exponential time constant of 4.5±0.2 ns. Furthermore, excitons in CsPbBr3 QDs can be efficiently dissociated in the presence of electron or hole acceptors. The half-lives of elec-tron transfer to benzoquinone and subsequent charge recom-bination are 65±5ps and 2.6±0.4 ns, respectively. The half-lives for hole transfer to phenothiazine and the subsequent charge recombination are 49±6 ps and 1.0±0.2 ns, respectively. The lack of electron and hole traps and fast interfacial elec-tron and hole transfer rates are key properties that may enable efficient lead halide perovskite QDs based light harvesting and emitting devices.
    Journal of the American Chemical Society 09/2015; DOI:10.1021/jacs.5b08520
  • Hao Liu · Wei Li · Dengke Shen · Dongyuan Zhao · Guoxiu Wang
    Journal of the American Chemical Society 09/2015; DOI:10.1021/jacs.5b08743
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    ABSTRACT: Nacre, or mother-of-pearl, the iridescent inner layer of many mollusk shells, is a biomineral lamellar composite of aragonite (CaCO3) and organic sheets. Biomineralization frequently occurs via transient amorphous precursor phases crystallizing into the final stable biomineral. In nacre, despite extensive attempts, amorphous calcium carbonate (ACC) precursors have remained elusive. They were inferred from non-nacre-forming larval shells, or from a residue of amorphous material around mature nacre tablets, and only once observed in bivalve nacre. Here we present the first direct observation of ACC precursors to nacre formation, obtained from the growth front of nacre in gastropod shells from red abalone (Haliotis rufescens), using synchrotron spectromicroscopy. Surprisingly, the abalone nacre data show the same ACC phases that are precursors to calcite (CaCO3) formation in sea urchin spicules, and not proto-aragonite or poorly crystalline aragonite (pAra), as expected for aragonitic nacre. In contrast, we find pAra in coral.
    Journal of the American Chemical Society 09/2015; DOI:10.1021/jacs.5b07931
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    ABSTRACT: The active site of [FeFe] hydrogenase contains a catalytic binuclear iron sub-site coordinated by CN(-) and CO ligands as well as a unique azadithiolate (adt(2-)) bridging ligand. It has been established that this binuclear cofactor is synthesized and assembled by three maturation proteins HydE,F,G. Using in vitro maturation in the presence of (15)N and (13)C labeled tyrosine it has been shown that the CN(-) and CO ligands originate from tyrosine. The source of the bridging adt(2-) ligand, however, remains as yet unknown. In order to identify the nitrogen of the bridging amine using HYSCORE spectroscopy and distinguish its spectroscopic signature from that of the CN(-) nitrogens we studied three isotope labeled variants of the H-cluster ((15)N-adt(2-)/C(14)N(-), (15)N-adt(2-)/C(15)N(-), and (14)N-adt(2-)/C(15)N(-)) and extracted accurate values of the hyperfine and quadrupole couplings of both CN(-) and adt(2-) nitrogens. This will allow to evaluate isotopologues of the H-cluster generated by in vitro bioassembly in the presence of various (15)N labeled potential precursors as possible sources of the bridging ligand.
    Journal of the American Chemical Society 09/2015; DOI:10.1021/jacs.5b06240
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    ABSTRACT: Ultra-smooth hexagonal boron nitride (h-BN) can dramatically enhance the carrier/phonon transport in interfaced transition metal dichalcogenides (TMDs), and amplify the effect of quantum capacitance in field-effect gating. All the current processes to realize h-BN-based heterostructures involve transfer or exfoliation. Rational chemistries and process techniques are still required to pro-duce large-area, transfer-free, directly grown TMDs/BN heterostructures. Here, we demonstrate a novel boron-oxygen chemistry route for oxide-assisted nucleation and growth of large-area, uniform and ultrathin h-BN directly on oxidized substrates (B/N atomic ratio = 1:1.16±0.03 and optical band gap = 5.51 eV). These intimately interfaced, van der Waals heterostructures of MoS2/h-BN and WS2/h-BN benefit from 6.27 folds reduced roughness of h-BN in comparison to SiO2. This leads to reduction in surface roughness scattering and charged impurity scattering for the enhancement of intrinsic charge carrier mobility for TMD-based heterostructures as verified by the increase in electrical conductivity (5 times for MoS2/h-BN and 2 times for WS2/h-BN). Further, the heterostructures are devoid of wrinkles and adsorbates, which is critical for 2D nanoelectronics. The versatile process can potentially be extrapolated to realize a variety of heterostructures with complex sandwiched 2D electronic circuitry.
    Journal of the American Chemical Society 09/2015; DOI:10.1021/jacs.5b07739
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    ABSTRACT: We report the development of a tertiary amine-containing β-turn peptide that catalyzes the atroposelective bromination of pharmaceutically relevant 3-arylquinazolin-4(3H)-ones (quinazolinones) with high levels of enantioinduction over a broad substrate scope. The structure of the free catalyst and the peptide-substrate complex were explored using X-ray crystallography and 2D-NOESY experiments. Quinazolinone rotational barriers about the chiral anilide axis were also studied using DFT calculations and are discussed in light of the high enantioselectivities observed. Mechanistic studies also suggest that the initial bromination event is stereo-determining, and the major monobromide intermediate is an atropisomerically stable, mono-ortho-substituted isomer. The observation of stereoisomerically stable monobromides stimulated the conversion of the tribromide products to other, atropisomerically-defined products of interest. For example, (1) a dehalogenation-Suzuki-Miyaura cross-coupling sequence delivers ortho-arylated derivatives, and (2) a regioselective Buchwald-Hartwig amination procedure installs para-amine functionality. Stereochemical information was retained during these subsequent transformations.
    Journal of the American Chemical Society 09/2015; DOI:10.1021/jacs.5b07726
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    ABSTRACT: Cell-penetrating peptides (CPPs) are promising as drug carriers. However, because their cellular uptake mainly involves endocytic mechanisms, endosomal trapping of the carrier (and drug) remains a high barrier for biomedical applications. The viral fusion mimic GALA, a pH-triggered CPP, takes advantage of the decreasing pH during endosome maturation to selectively attack endosomal membranes. Below pH 6, the sequence folds into a helix and can disrupt membranes. Previous studies have shown that the presence of hydrophobic interfaces strongly suppresses the reversibility of the GALA folding process, and hence the bioactivity of GALA after escape from the endosome is a crucial question for the design of safe, GALA-based drugs. In this study, we show GALA remains pH-responsive when interacting with a lipid membrane and can be 'switched' back to its inactive state, even after incorporation into lipid membranes.
    Journal of the American Chemical Society 09/2015; 137(38):150903122238005. DOI:10.1021/jacs.5b06720
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    ABSTRACT: Formaldehyde (FA), in the 0.2-0.4 mM range, is produced and maintained endogenously via enzymatic pathways. At these levels, FA can promote cell proliferation as well as mediate memory formation. Once elevated, FA stress is known to induce cognitive impairments, memory loss, and neurodegeneration owing to its potent DNA and protein cross-linking mechanisms. Optical imaging is a powerful noninvasive approach used to study FA in living systems; however, biocompatible chemical probes for FA are currently lacking. Herein, we report the design, synthesis, and biological evaluation of Formaldehyde Probe 1 (FP1), a new fluorescent indicator based on the 2-aza-Cope sigmatropic rearrangement. The remarkable sensitivity, selectivity, and photostability of FP1 has enabled us to visualize FA in live HEK293TN and Neuroscreen-1 cells. We envision that FP1 will find widespread applications in the study of FA associated with normal and pathological processes.
    Journal of the American Chemical Society 08/2015; 137(34):150825124345002. DOI:10.1021/jacs.5b05339
  • Journal of the American Chemical Society 08/2015; 137(35). DOI:10.1021/jacs.5b03899