Journal of the American Chemical Society
DOI: 10.1021/jacs.9b02207
Sebastian Beil
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24 May 07:42
[ASAP] Pd(II) Coordination Sphere Engineering: Pyridine Cages, Quinoline Bowls, and Heteroleptic Pills Binding One or Two Fullerenes
by Bin Chen, Julian J. Holstein, Shinnosuke Horiuchi, Wolf G. Hiller, Guido H. Clever
24 May 06:58
[ASAP] Highly Luminescent Heavier Main Group Analogues of Boron-Dipyrromethene
by Wang Wan, Mayura S. Silva, Colin D. McMillen, Stephen E. Creager, Rhett C. Smith
Journal of the American Chemical Society
DOI: 10.1021/jacs.9b03235
24 May 06:58
[ASAP] Tailoring Ultrafast Singlet Fission by the Chemical Modification of Phenazinothiadiazoles
by Nicolo` Alagna, Jie Han, Nikolaus Wollscheid, J. Luis Perez Lustres, Julia Herz, Sebastian Hahn, Silke Koser, Fabian Paulus, Uwe H. F. Bunz, Andreas Dreuw, Tiago Buckup, Marcus Motzkus
Journal of the American Chemical Society
DOI: 10.1021/jacs.9b01079
fanqp likes this
22 May 09:32
Open Access
  This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
Construction and interconversion of anion-coordination-based (‘aniono’) grids and double helicates modulated by counter-cations
Chem. Sci., 2019, 10,6278-6284
DOI: 10.1039/C9SC02012H, Edge Article
DOI: 10.1039/C9SC02012H, Edge Article
Open Access  This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
Xiaoxia Fan, Dan Zhang, Shiyu Jiang, Heng Wang, Lin-Ting Lin, Bo Zheng, Wen-Hua Xu, Yanxia Zhao, Benjamin P. Hay, Yi-Tsu Chan, Xiao-Juan Yang, Xiaopeng Li, Biao Wu
‘Aniono’ double helicates and grids were constructed using PO43− anions and a bis–tris(urea) ligand and interconverted by changing the counter-cation.
The content of this RSS Feed (c) The Royal Society of Chemistry
‘Aniono’ double helicates and grids were constructed using PO43− anions and a bis–tris(urea) ligand and interconverted by changing the counter-cation.
The content of this RSS Feed (c) The Royal Society of Chemistry
17 May 10:43
On‐Surface Evolution of meso‐Isomerism in Two‐Dimensional Supramolecular Assemblies
by Juyeon Park,
Ju-Hyung Kim,
Sunmi Bak,
Kazukuni Tahara,
Jaehoon Jung,
Maki Kawai,
Yoshito Tobe,
Yousoo Kim
Chirality in two dimensions: The formation of meso‐isomerism on surfaces through coverage‐driven hierarchical polymorphic transitions of supramolecular assemblies of highly symmetric π‐conjugated molecules is reported. Four coverage‐dependent phases of dehydrobenzo[12]annulene were uniformly fabricated on Ag(111) and exhibit unique chiral characteristics from the single‐molecule level to two‐dimensional supramolecular assemblies.
Abstract
Chiral structures created through the adsorption of molecules onto achiral surfaces play pivotal roles in many fields of science and engineering. Here, we present a systematic study of a novel chiral phenomenon on a surface in terms of organizational chirality, that is, meso‐isomerism, through coverage‐driven hierarchical polymorphic transitions of supramolecular assemblies of highly symmetric π‐conjugated molecules. Four coverage‐dependent phases of dehydrobenzo[12]annulene were uniformly fabricated on Ag(111), exhibiting unique chiral characteristics from the single‐molecule level to two‐dimensional supramolecular assemblies. All coverage‐driven phase transitions stem from adsorption‐induced pseudo‐diastereomerism, and our observation of a lemniscate‐type (∞) supramolecular configuration clearly reveals a drastic chiral phase transition from an enantiomeric chiral domain to a meso‐isomeric achiral domain. These findings provide new insights into controlling two‐dimensional chiral architectures on surfaces.
16 May 11:48
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
H-Bond donor parameters for cations
Chem. Sci., 2019, 10,5943-5951
DOI: 10.1039/C9SC00721K, Edge Article
DOI: 10.1039/C9SC00721K, Edge Article
Open Access  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Sarah J. Pike, Ennio Lavagnini, Lisa M. Varley, Joanne L. Cook, Christopher A. Hunter
Parameters that provide a quantitative description of the free energy of interaction of cations with any H-bond acceptor in any solvent have been experimentally determined.
The content of this RSS Feed (c) The Royal Society of Chemistry
Parameters that provide a quantitative description of the free energy of interaction of cations with any H-bond acceptor in any solvent have been experimentally determined.
The content of this RSS Feed (c) The Royal Society of Chemistry
fuxing and -1 others like this
14 May 06:23
[ASAP] Macrocycles as Ion Pair Receptors
by Qing He, Gabriela I. Vargas-Zúñiga, Seung Hyun Kim, Sung Kuk Kim, Jonathan L. Sessler
Chemical Reviews
DOI: 10.1021/acs.chemrev.8b00734
Balakrishna Bugga, mona lipschitz likes this
10 May 06:00
Open Access
  This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
On the encapsulation and assembly of anticancer drugs in a cooperative fashion
Chem. Sci., 2019, 10,5678-5685
DOI: 10.1039/C9SC01380F, Edge Article
DOI: 10.1039/C9SC01380F, Edge Article
Open Access  This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
Weikun Wang, Han Wang, Lei Zhiquan, Han Xie, Honggang Cui, Jovica D. Badjić
In this study, we report the remarkable recognition and assembly characteristics of D3h symmetric basket 16− containing two adjoining and nonpolar cavities with six biocompatible GABA residues at their northern and southern termini.
The content of this RSS Feed (c) The Royal Society of Chemistry
In this study, we report the remarkable recognition and assembly characteristics of D3h symmetric basket 16− containing two adjoining and nonpolar cavities with six biocompatible GABA residues at their northern and southern termini.
The content of this RSS Feed (c) The Royal Society of Chemistry
06 May 06:36
[ASAP] Interfacial Supramolecular Structures of Amphiphilic Receptors Drive Aqueous Phosphate Recognition
by Jennifer F. Neal, Wei Zhao, Alexander J. Grooms, Morgan A. Smeltzer, Brittany M. Shook, Amar H. Flood, Heather C. Allen
Journal of the American Chemical Society
DOI: 10.1021/jacs.9b02148
ylm0809185 likes this
23 Apr 15:19
Open Access
  This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
Tuning the π-bridge of quadrupolar triarylborane chromophores for one- and two-photon excited fluorescence imaging of lysosomes in live cells
Chem. Sci., 2019, 10,5405-5422
DOI: 10.1039/C9SC00793H, Edge Article
DOI: 10.1039/C9SC00793H, Edge Article
Open Access  This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
Stefanie Griesbeck, Evripidis Michail, Chenguang Wang, Hiroaki Ogasawara, Sabine Lorenzen, Lukas Gerstner, Theresa Zang, Jörn Nitsch, Yoshikatsu Sato, Rüdiger Bertermann, Masayasu Taki, Christoph Lambert, Shigehiro Yamaguchi, Todd B. Marder
The tetracationic diketopyrrolopyrrole compound 5M exhibits a σ2 value of 4560 GM at 740 nm.
The content of this RSS Feed (c) The Royal Society of Chemistry
The tetracationic diketopyrrolopyrrole compound 5M exhibits a σ2 value of 4560 GM at 740 nm.
The content of this RSS Feed (c) The Royal Society of Chemistry
23 Apr 14:23
Open Access
  This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
Threading-gated photochromism in [2]pseudorotaxanes
Chem. Sci., 2019, 10,5104-5113
DOI: 10.1039/C9SC00913B, Edge Article
DOI: 10.1039/C9SC00913B, Edge Article
Open Access  This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
Giorgio Baggi, Lorenzo Casimiro, Massimo Baroncini, Serena Silvi, Alberto Credi, Stephen J. Loeb
Photochromic axles bearing a bis(thienyl)ethene moiety exhibit threading-gated photochromism, where formation of a [2]pseudorotaxane with crown ether rings significantly enhances the photochromic properties of the axles.
The content of this RSS Feed (c) The Royal Society of Chemistry
Photochromic axles bearing a bis(thienyl)ethene moiety exhibit threading-gated photochromism, where formation of a [2]pseudorotaxane with crown ether rings significantly enhances the photochromic properties of the axles.
The content of this RSS Feed (c) The Royal Society of Chemistry
23 Apr 06:48
Rotaxane Probes for the Detection of Hydrogen Peroxide by 129Xe HyperCEST NMR Spectroscopy
by Sarah H. Klass,
Ashley E. Truxal,
Tahoe A. Fiala,
Joseph Kelly,
Dang Nguyen,
Joel A. Finbloom,
David E. Wemmer,
Alexander Pines,
Matthew B. Francis
Lose the thread: Cucurbit[6]uril (CB6) can host single 129Xe atoms in its interior cavity, thereby creating a distinct chemical environment that can be observed by 129Xe hyperCEST NMR spectroscopy. To create a “turn on” probe, CB6 can be threaded onto a molecular axle and capped by two stoppers to prevent the entry of 129Xe into the CB6 interior. Selective cleavage of one stopper group by H2O2 releases CB6, thereby producing a hyperCEST response.
Abstract
The development of sensitive and chemically selective MRI contrast agents is imperative for the early detection and diagnosis of many diseases. Conventional responsive contrast agents used in 1H MRI are impaired by the high abundance of protons in the body. 129Xe hyperCEST NMR/MRI comprises a highly sensitive complement to traditional 1H MRI because of its ability to report specific chemical environments. To date, the scope of responsive 129Xe NMR contrast agents lacks breadth in the specific detection of small molecules, which are often important markers of disease. Herein, we report the synthesis and characterization of a rotaxane‐based 129Xe hyperCEST NMR contrast agent that can be turned on in response to H2O2, which is upregulated in several disease states. Added H2O2 was detected by 129Xe hyperCEST NMR spectroscopy in the low micromolar range, as well as H2O2 produced by HEK 293T cells activated with tumor necrosis factor.
17 Apr 10:56
[ASAP] Diaryl-?3-chloranes: Versatile Synthesis and Unique Reactivity as Aryl Cation Equivalent
by Misuzu Nakajima, Kazunori Miyamoto, Keiichi Hirano, Masanobu Uchiyama
Journal of the American Chemical Society
DOI: 10.1021/jacs.9b02436
Josep Mas Roselló, Owen and 3 others like this
17 Apr 10:30
[ASAP] 1,3-Dithiole-2-one-Fused Subphthalocyanine and Subporphyrazine: Synthesis and Properties Arising from the 1,3-Dithiole-2-one Units
by Yemei Wang, Koya Uchihara, Shigeki Mori, Hiroyuki Furuta, Soji Shimizu
Organic Letters
DOI: 10.1021/acs.orglett.9b00752
Max Martin, yjdlut likes this
12 Apr 07:36
[ASAP] Rhodium-Catalyzed Synthesis, Crystal Structures, and Photophysical Properties of [6]Cycloparaphenylene Tetracarboxylates
by Norihiko Hayase, Haruki Sugiyama, Hidehiro Uekusa, Yu Shibata, Ken Tanaka
Organic Letters
DOI: 10.1021/acs.orglett.9b00820
Fei Ye, Dominik Lungerich and 2 others like this
11 Apr 15:20
[ASAP] Di-(m-m-m)terphenyl-Embedded Decaphyrin and Its Bis-Rh(I) Complex
by Mainak Das, B. Adinarayana, M. Murugavel, Subhashree Nayak, A. Srinivasan
Organic Letters
DOI: 10.1021/acs.orglett.9b00871
yjdlut likes this
08 Apr 10:50
[ASAP] Discovering Monoterpene Catalysis Inside Nanocapsules with Multiscale Modeling and Experiments
by Efrat Pahima, Qi Zhang, Konrad Tiefenbacher, Dan T. Major
Journal of the American Chemical Society
DOI: 10.1021/jacs.8b13411
08 Apr 10:45
Open Access
  This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
Chiral diversification through the assembly of achiral phenylacetylene macrocycles with a two-fold bridge
Chem. Sci., 2019, 10,4782-4791
DOI: 10.1039/C9SC00972H, Edge Article
DOI: 10.1039/C9SC00972H, Edge Article
Open Access  This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
Ryo Katoono, Keiichi Kusaka, Yuki Saito, Kazuki Sakamoto, Takanori Suzuki
Multiple chiral molecules were generated through the assembly and double-bridging of achiral phenylacetylene macrocycles.
The content of this RSS Feed (c) The Royal Society of Chemistry
Multiple chiral molecules were generated through the assembly and double-bridging of achiral phenylacetylene macrocycles.
The content of this RSS Feed (c) The Royal Society of Chemistry
08 Apr 10:43
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Synthesis of a one-handed helical polythiophene: a new approach using an axially chiral bithiophene with a fixed syn-conformation
Chem. Sci., 2019, 10,4890-4895
DOI: 10.1039/C9SC00342H, Edge Article
DOI: 10.1039/C9SC00342H, Edge Article
Open Access  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Tomoyuki Ikai, Kokoro Takayama, Yuya Wada, Serena Minami, Chanokporn Apiboon, Ken-ichi Shinohara
An optically active polythiophene, which can fold into a one-handed helical conformation under good solvent conditions, has been developed.
The content of this RSS Feed (c) The Royal Society of Chemistry
An optically active polythiophene, which can fold into a one-handed helical conformation under good solvent conditions, has been developed.
The content of this RSS Feed (c) The Royal Society of Chemistry
08 Apr 10:38
[ASAP] Dicyclopenta[ghi,pqr]perylene as a Structural Motif for Bowl-Shaped Hydrocarbons: Synthetic and Conformational Studies
by Jhih-Liang Huang, BillaBhargava Rao, Manyam Praveen Kumar, Hsiu-Feng Lu, Ito Chao, Chih-Hsiu Lin
Organic Letters
DOI: 10.1021/acs.orglett.8b04095
08 Apr 10:38
[ASAP] Periphery Design of Macrocyclic Materials for Organic Light-Emitting Devices with a Blue Phosphorescent Emitter
by Asami Yoshii, Koki Ikemoto, Tomoo Izumi, Hideo Taka, Hiroshi Kita, Sota Sato, Hiroyuki Isobe
Organic Letters
DOI: 10.1021/acs.orglett.9b00717
yjdlut likes this
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