Archive for the ‘jacs (journal of the am. chemical society)’ Category
Chemistry researchers in China have retracted their 2016 paper after reporting that the raw data did not match what they presented in the article.
The authors were attempting to develop a method to produce large amounts of a high-quality two-dimensional form of antimonene, a prized crystal structure that has been notoriously difficult to synthesize reliably.
They were successful, according to the paper, achieving “a large quantity of few-layer antimonene” and demonstrating its “exact atomical structure” and properties.
But they may have spoken too soon. Read the rest of this entry »
The correction replaces an expression of concern on the Journal of the American Chemical Society (JACS) paper, which followed allegations of data manipulation. It provides some un-cropped images, and removes a co-author from the paper. However, it does not appear to address previous allegations of misconduct, nor a recent ruling from an investigation at Hong Kong University (HKU), which found that some of the data were “invalid.”
The author of a paper “under editorial review” at the Journal of the American Chemical Society has told us the results the paper have been replicated, contrary to claims made by a former member of her lab.
What’s more, the author said she has submitted a correction to the paper, which is currently flagged with an expression of concern, to provide uncropped images.
We originally reported on the case in February from the perspective of Roger Wong, a former chemist at Hong Kong University who said he hasn’t been able to replicate the findings out of the lab of Dan Yang, a current chemistry professor at HKU (who is female, despite the fact that “Dan” is frequently used as a male name in English). We unfortunately failed to reach Yang in February because of an email glitch; once we contacted Yang, she told us she does not believe Wong’s side of the story:
The Journal of the American Chemical Society has issued an expression of concern over “the presentation of results” in a 2014 paper about a new probe for use in imaging.
We haven’t heard back from the journal nor the authors of the paper, so there’s not much we can officially say about what the journal is investigating.
The authors of a paper on a mechanism for potential cancer therapies are retracting it after realizing they published some proprietary findings “without permission and agreement from St. Jude Children’s Research Hospital.”
According to the retraction note in Journal of the American Chemical Society, the authors included an X-ray crystal structure and data that were gathered at St. Jude’s and considered the hospital’s intellectual property. On the paper, the last author, Zhengding Su, listed an affiliation at St. Jude and Hubei University of Technology in China, along with Amersino Biodevelop Inc., based in Waterloo, Canada.
The Journal of the American Chemical Society (JACS) has retracted three articles that had earned expressions of concern by chemistry researchers who were under investigation at the University of Texas, Austin.
The newly retracted articles have each been cited more than 50 times, according to Thomson Scientific’s Web of Knowledge.
The three papers are: Read the rest of this entry »
Two researchers who already had three expressions of concern under their belts have five more, plus a retraction.
Kelly Wiggins and Christopher Bielawski share authorship on all the papers in question. After the first set of EoCs, Bielawski, at the time a PI at UT Austin, told Chemistry and Engineering News that a “former lab member” had admitted to faking the data. The recent retraction indicates that University of Texas at Austin’s Office of Research Integrity formally investigated the lab, and determined that Bielawski was telling the truth about a former lab member being to blame.
Bielawski has since taken a post at Ulsan National Institute of Science and Technology in South Korea. He told us that move was unrelated to anything that happened at UT Austin, but declined to answer other questions. Wiggins got a postdoc at the University of Illinois, which an Illinois spokesperson confirmed lasted from July 1 2013 to January 22 2014; we’re waiting to hear back on our question about whether her departure had anything to do with misconduct.
Proof that organic chemistry is hard for everyone, not just pre-meds: A paper in the Journal of the American Chemical Society was retracted after the structures of compounds being studied were “misassigned.”
Another study by author Doo Ok Jang, also in JACS, was retracted in 2013 for the same reason; you can read our coverage here. Jang and Sang Yoon Kim published that one in 2008; the paper we’re talking about today was published in 2010 by Jang and Sung Jun Kim.
A pair of chemists at Ball State University in Indiana has lost their paper in the Journal of the American Chemical Society on silicone in a dispute over the provenance of the data.
The article, “Silicone Electrosynthesis from Silica Raw Materials at Room Temperature,” was written by Jeffrey E. Dick, a grad student, and Daesung Chong. It appeared in JACS in March.
Karel Bezouška, who, as we noted last year “broke into a lab refrigerator so he could tamper with samples being used to try to replicate the experiments during the investigation,” has had his fourth paper retracted.
Here’s the notice, for “Synthesis of Multivalent Glycoconjugates Containing the Immunoactive LELTE Peptide: Effect of Glycosylation on Cellular Activation and Natural Killing by Human Peripheral Blood Mononuclear Cells,” in the Journal of the American Chemical Society (JACS): Read the rest of this entry »