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Redox-switchable carboranes for uranium capture and release 期刊论文
NATURE, 2020, 577 (7792) : 652-+
作者:  Marques, Joao C.;  Li, Meng;  Schaak, Diane;  Robson, Drew N.;  Li, Jennifer M.
收藏  |  浏览/下载：31/0  |  提交时间：2020/07/03

The uranyl ion (UO22+  U(vi) oxidation state) is the most common form of uranium found in terrestrial and aquatic environments and is a central component in nuclear fuel processing and waste remediation efforts. Uranyl capture from either seawater or nuclear waste has been well studied and typically relies on extremely strong chelating/binding affinities to UO22+ using chelating polymers(1,2), porous inorganic(3-5) or carbon-based(6,7) materials, as well as homogeneous(8) compounds. By contrast, the controlled release of uranyl after capture is less established and can be difficult, expensive or destructive to the initial material(2,9). Here we show how harnessing the redox-switchable chelating and donating properties of an ortho-substituted closo-carborane (1,2-(Ph2PO)(2)-1,2-C2B10H10) cluster molecule can lead to the controlled chemical or electrochemical capture and release of UO22+ in monophasic (organic) or biphasic (organic/aqueous) model solvent systems. This is achieved by taking advantage of the increase in the ligand bite angle when the closo-carborane is reduced to the nido-carborane, resulting in C-C bond rupture and cage opening. The use of electrochemical methods for uranyl capture and release may complement existing sorbent and processing systems.


Redox-switchable chelation is demonstrated for a carborane cluster molecule, leading to controlled chemical or electrochemical capture and release of uranyl in monophasic or biphasic model solvent systems.


  
Government-funded research increasingly fuels innovation 期刊论文
SCIENCE, 2019, 364 (6446) : 1139-+
作者:  Fleming, L.;  Greene, H.;  Li, G.;  Marx, M.;  Yao, D.
收藏  |  浏览/下载：1/0  |  提交时间：2019/11/27
Biological adaptations in the Arctic cervid, the reindeer (Rangifer tarandus) 期刊论文
SCIENCE, 2019, 364 (6446) : 1154-+
作者:  Lin, Zeshan;  Chen, Lei;  Chen, Xianqing;  Zhong, Yingbin;  Yang, Yue;  Xia, Wenhao;  Liu, Chang;  Zhu, Wenbo;  Wang, Han;  Yan, Biyao;  Yang, Yifeng;  Liu, Xing;  Kvie, Kjersti Sternang;  Roed, Knut Hakon;  Wang, Kun;  Xiao, Wuhan;  Wei, Haijun;  Li, Guangyu;  Heller, Rasmus;  Gilbert, M. Thomas P.;  Qiu, Qiang;  Wang, Wen;  Li, Zhipeng
收藏  |  浏览/下载：11/0  |  提交时间：2019/11/27
Global carbon intensity of crude oil production 期刊论文
SCIENCE, 2018, 361 (6405) : 851-853
作者:  Masnadi, Mohammad S.;  El-Houjeiri, Hassan M.;  Schunack, Dominik;  Li, Yunpo;  Englander, Jacob G.;  Badahdah, Alhassan;  Monfort, Jean-Christophe;  Anderson, James E.;  Wallington, Timothy J.;  Bergerson, Joule A.;  Gordon, Deborah;  Koomey, Jonathan;  Przesmitzki, Steven;  Azevedo, Ines L.;  Bi, Xiaotao T.;  Duffy, James E.;  Heath, Garvin A.;  Keoleian, Gregory A.;  McGlade, Christophe;  Meehan, D. Nathan;  Yeh, Sonia;  You, Fengqi;  Wang, Michael;  Brandt, Adam R.
收藏  |  浏览/下载：10/0  |  提交时间：2019/11/27
Response to Comment on "Plant diversity increases with the strength of negative density dependence at the global scale" 期刊论文
SCIENCE, 2018, 360 (6391)
作者:  LaManna, Joseph A.;  Mangan, Scott A.;  Alonso, Alfonso;  Bourg, Norman A.;  Brockelman, Warren Y.;  Bunyavejchewin, Sarayudh;  Chang, Li-Wan;  Chiang, Jyh-Min;  Chuyong, George B.;  Clay, Keith;  Cordell, Susan;  Davies, Stuart J.;  Furniss, Tucker J.;  Giardina, Christian P.;  Gunatilleke, I. A. U. Nimal;  Gunatilleke, C. V. Savitri;  He, Fangliang;  Howe, Robert W.;  Hubbell, Stephen P.;  Hsieh, Chang-Fu;  Inman-Narahari, Faith M.;  Janik, David;  Johnson, Daniel J.;  Kenfack, David;  Korte, Lisa;  Kral, Kamil;  Larson, Andrew J.;  Lutz, James A.;  McMahon, Sean M.;  McShea, William J.;  Memiaghe, Herve R.;  Nathalang, Anuttara;  Novotny, Vojtech;  Ong, Perry S.;  Orwig, David A.;  Ostertag, Rebecca;  Parker, Geoffrey G.;  Phillips, Richard P.;  Sack, Lawren;  Sun, I-Fang;  Tello, J. Sebastian;  Thomas, Duncan W.;  Turner, Benjamin L.;  Diaz, Dilys M. Vela;  Vrska, Tomas;  Weiblen, George D.;  Wolf, Amy;  Yap, Sandra;  Myers, Jonathan A.
收藏  |  浏览/下载：18/0  |  提交时间：2019/11/27
Response to Comment on "Plant diversity increases with the strength of negative density dependence at the global scale" 期刊论文
SCIENCE, 2018, 360 (6391)
作者:  LaManna, Joseph A.;  Mangan, Scott A.;  Alonso, Alfonso;  Bourg, Norman A.;  Brockelman, Warren Y.;  Bunyavejchewin, Sarayudh;  Chang, Li-Wan;  Chiang, Jyh-Min;  Chuyong, George B.;  Clay, Keith;  Cordell, Susan;  Davies, Stuart J.;  Furniss, Tucker J.;  Giardina, Christian P.;  Gunatilleke, I. A. U. Nimal;  Gunatilleke, C. V. Savitri;  He, Fangliang;  Howe, Robert W.;  Hubbell, Stephen P.;  Hsieh, Chang-Fu;  Inman-Narahari, Faith M.;  Janik, David;  Johnson, Daniel J.;  Kenfack, David;  Korte, Lisa;  Kral, Kamil;  Larson, Andrew J.;  Lutz, James A.;  McMahon, Sean M.;  McShea, William J.;  Memiaghe, Herve R.;  Nathalang, Anuttara;  Novotny, Vojtech;  Ong, Perry S.;  Orwig, David A.;  Ostertag, Rebecca;  Parker, Geoffrey G.;  Phillips, Richard P.;  Sack, Lawren;  Sun, I-Fang;  Tello, J. Sebastian;  Thomas, Duncan W.;  Turner, Benjamin L.;  Diaz, Dilys M. Vela;  Vrska, Tomas;  Weiblen, George D.;  Wolf, Amy;  Yap, Sandra;  Myers, Jonathan A.
收藏  |  浏览/下载：14/0  |  提交时间：2019/11/27
Capturing dynamic protein interactions 期刊论文
SCIENCE, 2018, 359 (6380) : 1105-1106
作者:  Li, Xiao-Han;  Chavali, Pavithra L.;  Babu, M. Madan
收藏  |  浏览/下载：0/0  |  提交时间：2019/11/27