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1. Control over the synthesis of homovalent and mixed-valence cubic cobalt-imidazolate cages

Author:
LiangThese authors contributed equally to this work., Liang; Luo, Dong; Zuo, Tao; Zhou, Xiao-Ping; Li, Dan
Source:
Chemical communications 2019 v.55 no.35 pp. 5103-5106
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; chemical reactions; solvents;     Show all 3 Subjects
Abstract:
... A series of cubic cobalt-imidazolate cages have been successfully synthesized via subcomponent self-assembly in different solvents under solvothermal conditions. The homovalent Coᴵᴵ and mixed-valence Coᴵᴵᴵ,ᴵᴵ-imidazolate cages are assembled with control over the mixed solvent ratio of N,N-diethylformamide/ethanol, respectively. ...
DOI:
10.1039/c9cc02083g

2. Target-controlled liposome amplification for versatile nanopore analysis

Author:
Tian, Lei; Wang, Ying; Kang, Xiao-feng
Source:
Chemical communications 2019 v.55 no.35 pp. 5159-5162
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; chemical reactions; nanopores;     Show all 3 Subjects
Abstract:
... We have reported a versatile nanopore method based on the combination of analyte-controlled liposome signal amplification and the nanopore detection of a reporter molecule, which largely extends the nanopore application range, and easily elevates the nanopore sensitivity to the fM level from the μM level. ...
DOI:
10.1039/c9cc00285e

3. A filled organic crystal as a hybrid large-bandwidth optical waveguide

Author:
Catalano, Luca; Commins, Patrick; Schramm, Stefan; Karothu, Durga Prasad; Rezgui, Rachid; Hadef, Kawther; Naumov, Panče
Source:
Chemical communications 2019 v.55 no.34 pp. 4921-4924
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; chemical reactions; fluorescence;     Show all 3 Subjects
Abstract:
... A fluorescent hollow crystal of 9,10-dicyanoanthracene was filled with a perylene diimide derivative with complementary emissive features. The obtained crystal-in-crystal hybrid was used as a multiresponsive optical waveguide, which showed passive and active modes of light transduction and a bandwidth that extends from the visible to the infrared region. ...
DOI:
10.1039/c9cc01702j

4. Dibenzo[b,e]phosphindolizines synthesized by a ring-closing metathesis of benzo[b]phospholes with two vinyl tethers

Author:
Tsurusaki, Akihiro; Matsumoto, Hiroyo; Kamikawa, Ken
Source:
Chemical communications 2019 v.55 no.34 pp. 4909-4912
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; chemical reactions; phosphorus;     Show all 3 Subjects
Abstract:
... Dibenzo[b,e]phosphindolizines 1 were successfully synthesized by a ring-closing metathesis of benzo[b]phosphole chalcogenides 2a–2c with two vinyl tethers (for chalcogen analogs 1a–1c), and by a deselenization reaction (for lone-pair analog 1d). The structures, properties, and bowl inversion derived from a phosphorus atom were fully investigated. ...
DOI:
10.1039/c9cc00463g

5. Engineered peptidic constructs metabolize amyloid β by self-assembly-driven reactions

Author:
Mondal, Tanmay; Mandal, Bhubaneswar
Source:
Chemical communications 2019 v.55 no.34 pp. 4933-4936
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; amyloid; enzymes; proteolysis;     Show all 4 Subjects
Abstract:
... Inspired by the unique mechanism of proteolytic maturation of host cell factor-1, we designed small peptide-based constructs that selectively recognized amyloid β (Aβ) and cleaved it in a non-catalytic manner initially around the α-secretase cleavage-site, thus termed as “artificial α-secretases”. “Artificial α-secretases” also cleaved Aβ on the cleavage-sites of other Aβ processing enzymes by pro ...
DOI:
10.1039/c9cc01582e

6. Trifunctional organometallic frameworks and cages based on all-cis-1,3,5-triethynyl-1,3,5-trisilacyclohexanes

Author:
Weisheim, Eugen; Weigel, Simon; Neumann, Beate; Stammler, Hans-Georg; Mitzel, Norbert W.
Source:
Chemical communications 2019 v.55 no.34 pp. 4985-4988
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; chemical reactions; moieties;     Show all 3 Subjects
Abstract:
... All-cis-1,3,5-triethynyl-1,3,5-triorganyl-1,3,5-trisilacyclohexanes (organyl R = Me, Ph) offer flexible scaffolds with three concordantly oriented ethynyl groups. Lithiation with n-BuLi affords the dimeric {[CH₂Si(R)(C₂Li)]₃(THF)₃}₂ with a drum-like structure in high yields. They can be transformed into other trinuclear organometallic derivatives like the trimercury cage species [CH₂Si(R)C₂HgC₂(R) ...
DOI:
10.1039/c9cc02315a

7. Organic polymorphs with fluorescence switching: direct evidence for mechanical and thermal modulation of excited state transitions

Author:
Jiang, Shan; Wang, Jiayu; Qi, Qingkai; Qian, Jingyu; Xu, Bin; Li, Fangfei; Zhou, Qiang; Tian, Wenjing
Source:
Chemical communications 2019 v.55 no.26 pp. 3749-3752
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; chemical reactions; fluorescence;     Show all 3 Subjects
Abstract:
... Herein, we provide a direct observation of the modulation of the excited state transition under mechanical and thermal stimuli in the solid state by two organic polymorphs based on a tetraphenylethene derivative (APMOB). It enriches the insight in the research of stimuli responsive luminescent materials. ...
DOI:
10.1039/c9cc00234k

8. Palladium-catalysed ligand-free reductive Heck cycloisomerisation of 1,6-en-α-chloro-enamides

Author:
HouThese authors contributed equally to this work., Yangyang; Ma, Jing; Yang, Hongyi; Anderson, Edward A.; Whiting, Andy; Wu, Na
Source:
Chemical communications 2019 v.55 no.26 pp. 3733-3736
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; byproducts; chemical reactions;     Show all 3 Subjects
Abstract:
... The first example of an intramolecular hydroarylation of 1,6-en-α-chloro-enamides was achieved by a palladium-catalysed ligand-free reductive Heck cycloisomerisation with no competing Heck-cyclised by-product. ...
DOI:
10.1039/c9cc00537d

9. Straightforward access to biocompatible poly(2-oxazoline)-coated nanomaterials by polymerization-induced self-assembly

Author:
LeThese authors contributed equally., Dao; Wagner, Friederike; Takamiya, Masanari; Hsiao, I-Lun; Gil Alvaradejo, Gabriela; Strähle, Uwe; Weiss, Carsten; Delaittre, Guillaume
Source:
Chemical communications 2019 v.55 no.26 pp. 3741-3744
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; biocompatibility; nanoparticles; polymerization;     Show all 4 Subjects
Abstract:
... We report the synthesis of poly(2-ethyl-2-oxazoline)-based (PEtOx) nanoobjects by polymerization-induced self-assembly (PISA). First, well-defined PEtOx macromolecular chain transfer agents were synthesized by cationic ring-opening polymerization and click chemistry. The photoinitiated PISA of 2-hydroxypropyl methacrylate mediated by these PEtOx produced nanoobjects spanning the full range of core ...
DOI:
10.1039/c9cc00407f

10. A new ZIF molecular-sieving membrane for high-efficiency dye removal

Author:
Li, Zhan; Yang, Pingping; Gao, Zhuangzhuang; Song, Mingqiu; Fang, Qianrong; Xue, Ming; Qiu, Shilun
Source:
Chemical communications 2019 v.55 no.24 pp. 3505-3508
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; chemical reactions; dyes;     Show all 3 Subjects
Abstract:
... A new and robust ZIF membrane was successfully prepared and evaluated for dye removal capacity. Benefitting from its favourable pore structure and thin selective layer, this ZIF membrane showed excellent removal efficiency for a variety of dyes, with rejection rates of over 99.8% and high water flux up to ∼100 L m⁻² h⁻¹. ...
DOI:
10.1039/c9cc00902g

11. Revisiting the reactive chemistry of FOX-7: cyclization of FOX-7 affords the fused-ring polynitro compounds

Author:
Yan, Chao; Qi, Xiujuan; Wang, Kangcai; Jin, Yunhe; Cheng, Guangbin; Liu, Tianlin; Yang, Hongwei; Zhang, Qinghua
Source:
Chemical communications 2019 v.55 no.24 pp. 3497-3500
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; derivatization; thermal stability;     Show all 3 Subjects
Abstract:
... A novel fused-ring polynitro compound (5) and a cyclic compound featuring gem-dinitromethylene and nitroso groups (7) were synthesized from 1,1-diamino-2,2-dinitroethylene (FOX-7). Both compounds exhibit high density, decent thermal stability, high detonation performances, and low mechanical sensitivities. This newly developed derivatization strategy enriches the ever-expanding reactive chemistry ...
DOI:
10.1039/c8cc10178g

12. Improved single-chain-magnet behavior in a biradical-based nitronyl nitroxide-Cu–Dy chain

Author:
Xie, Jing; Li, Hong-Dao; Yang, Meng; Sun, Juan; Li, Li-Cun; Sutter, Jean-Pascal
Source:
Chemical communications 2019 v.55 no.23 pp. 3398-3401
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; chemical reactions; energy;     Show all 3 Subjects
Abstract:
... A biradical with ferromagnetic intramolecular interaction was found to improve the SCM behavior of a nitronyl nitroxide-Cu–Dy chain, resulting in an energy barrier for magnetization reversal of 40 K. ...
DOI:
10.1039/c9cc00570f

13. Single-component molecular conductor [Pt(dmdt)₂]—a three-dimensional ambient-pressure molecular Dirac electron system

Author:
Zhou, Biao; Ishibashi, Shoji; Ishii, Tatsuru; Sekine, Takahiko; Takehara, Ryosuke; Miyagawa, Kazuya; Kanoda, Kazushi; Nishibori, Eiji; Kobayashi, Akiko
Source:
Chemical communications 2019 v.55 no.23 pp. 3327-3330
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; chemical reactions; magnetism;     Show all 3 Subjects
Abstract:
... The single-component molecular conductor [Pt(dmdt)₂] is a sought-after ambient-pressure molecular Dirac electron system, which exhibits a high temperature-insensitive conductivity and temperature-dependent magnetic susceptibility nearly vanishing below 120 K. First-principles DFT calculations reveal that Dirac cones emerge along the a* direction, and form Dirac nodal lines. ...
DOI:
10.1039/c9cc00218a

14. Integration of yolk–shell units into a robust and highly reactive nanoreactor: a platform for cascade reactions

Author:
Guo, Yingchun; Feng, Lei; Wang, Xiaomei; Zhang, Xu
Source:
Chemical communications 2019 v.55 no.21 pp. 3093-3096
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; catalysts; chemical reactions;     Show all 3 Subjects
Abstract:
... A three-dimensionally integrated yolk–shell (3D-IYS) nanoreactor with spatially separated functionalities was fabricated via a protection–deprotection approach and core–shell colloidal crystal templates (CS-CCTs). The resulting bifunctional catalyst served as a platform for cascade reactions with excellent activity, selectivity, and recyclability. ...
DOI:
10.1039/c9cc00288j

15. Synthesis of chiral carbazole-based BODIPYs showing circularly polarized luminescence

Author:
Maeda, Chihiro; Nagahata, Keiji; Takaishi, Kazuto; Ema, Tadashi
Source:
Chemical communications 2019 v.55 no.21 pp. 3136-3139
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; chemical reactions; luminescence;     Show all 3 Subjects
Abstract:
... Chiral carbazole-based BODIPYs with a binaphthyl unit were synthesized via an Al-mediated reaction. Et₂AlCl was found to be a convenient reagent for the reaction to give the chiral BODIPYs in high yields. It has been shown for the first time that these chiral carbazole-based BODIPYs show circularly polarized luminescence (CPL) both in solution and in the solid state. ...
DOI:
10.1039/c9cc00894b

16. Supramolecular nanochannels self-assembled by helical pyridine–pyridazine oligomers

Author:
YanThese authors contributed equally to this work., Tengfei; Yang, Feihu; Qi, Shuaiwei; Fan, Xiaotong; Liu, Shengda; Ma, Ningning; Luo, Quan; Dong, Zeyuan; Liu, Junqiu
Source:
Chemical communications 2019 v.55 no.17 pp. 2509-2512
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; chemical reactions; ions;     Show all 3 Subjects
Abstract:
... Herein, we demonstrate a supramolecular nanochannel formed by intermolecular π stacking of pyridine–pyridazine helical oligomers, wherein alkali ions could be easily recognized and transported. Importantly, this nanochannel also revealed reversible collection and triggered-release behaviors via modulating the folded and unfolded states of helical pyridine–pyridazine oligomers. ...
DOI:
10.1039/c8cc10098e

17. Rigidification of a macrocyclic tris-catecholate scaffold leads to electronic localisation of its mixed valent redox product

Author:
Greatorex, Sam; Vincent, Kevin B.; Baldansuren, Amgalanbaatar; McInnes, Eric J. L.; Patmore, Nathan J.; Sproules, Stephen; Halcrow, Malcolm A.
Source:
Chemical communications 2019 v.55 no.16 pp. 2281-2284
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; electron transfer; oxidation;     Show all 3 Subjects
Abstract:
... The catecholate groups in [{Pt(L)}₃(μ₃-tctq)] (H₆tctq = 2,3,6,7,10,11-hexahydroxy-4b,8b,12b,12d-tetramethyltribenzotriquinacene; L = a diphosphine chelate) undergo sequential oxidation to their semiquinonate forms by voltammetry, with ΔE₁/₂ = 160–170 mV. The monoradical [{Pt(dppb)}₃(μ₃-tctq˙)]⁺ is valence-localised, with no evidence for intervalence charge transfer in its near-IR spectrum. This co ...
DOI:
10.1039/c8cc10122a

18. Solvent-assisted synthesis of a shape-persistent chiral polyaza gigantocycle characterized by a very large internal cavity and extraordinarily high amplitude of the ECD exciton couplet

Author:
Zgorzelak, Mikołaj; Grajewski, Jakub; Gawroński, Jacek; Kwit, Marcin
Source:
Chemical communications 2019 v.55 no.16 pp. 2301-2304
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; chemical reactions; hydrophobicity;     Show all 3 Subjects
Abstract:
... A giant, chiral square-shaped octaimine macrocycle has been obtained in a controlled manner from readily available and inexpensive substrates: 9,10-diphenylanthracene-based dialdehyde and trans-1,2-diaminocyclohexane. Reduction of the polyimine led to a chiral octaamine characterized by a very large internal hydrophobic cavity. ...
DOI:
10.1039/c8cc10184a

19. Emission wavelength dependence on the rISC rate in TADF compounds with large conformational disorder

Author:
Serevičius, Tomas; Skaisgiris, Rokas; Dodonova, Jelena; Jagintavičius, Laimis; Bucevičius, Jonas; Kazlauskas, Karolis; Juršėnas, Saulius; Tumkevičius, Sigitas
Source:
Chemical communications 2019 v.55 no.13 pp. 1975-1978
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; chemical reactions; wavelengths;     Show all 3 Subjects
Abstract:
... Large vibronic coupling between the local and charge-transfer triplet states is required for efficient reverse intersystem crossing in TADF compounds. This is ensured by low steric hindrance between donor and acceptor molecular units. However, flexible molecular cores show large conformational disorder and emission wavelength instability in solid films. ...
DOI:
10.1039/c8cc08906j

20. Recent development on the [5+2] cycloadditions and their application in natural product synthesis

Author:
Gao, Kai; Zhang, Yong-Gang; Wang, Zhiming; Ding, Hanfeng
Source:
Chemical communications 2019 v.55 no.13 pp. 1859-1878
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; cycloaddition reactions; drugs;     Show all 3 Subjects
Abstract:
... The [5+2] cycloaddition is one kind of fascinating and powerful reaction to access seven-membered ring systems existing in complex natural products and pharmaceuticals. In this review, recent developments on the [5+2] cycloadditions and their application in the synthesis of complex natural products are discussed. A focus is given to the way in which the [5+2] cycloadditions have influenced the log ...
DOI:
10.1039/c8cc09077g