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1. Resistive switching in an organic supramolecular semiconducting ferroelectric

Author:
Casellas, Nicolás M.; Urbanaviciute, Indre; Cornelissen, Tim D.; Berrocal, José Augusto; Torres, Tomás; Kemerink, Martijn; García-Iglesias, Miguel
Source:
Chemical communications 2019 v.55 no.60 pp. 8828-8831
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; chemical reactions;     Show all 2 Subject
Abstract:
... The combination of switchable dipolar side groups and the semiconducting core of the newly synthetized C₃-symmetric benzotrithiophene molecule (BTTTA) leads to an ordered columnar material showing continuous tunability from injection- to bulk-limited conductivity modulation. ...
DOI:
10.1039/c9cc02466b

2. A two-photon active chevron-shaped type I photoinitiator designed for 3D stereolithography

Author:
Zhou, Ruchun; Malval, Jean-Pierre; Jin, Ming; Spangenberg, Arnaud; Pan, Haiyan; Wan, Decheng; Morlet-Savary, Fabrice; Knopf, Stephan
Source:
Chemical communications 2019 v.55 no.44 pp. 6233-6236
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; photons; polymerization;     Show all 3 Subjects
Abstract:
... We present herein the properties of a highly reactive type I photoinitiator with significant 2PA cross-sections (δ₇₂₀ₙₘ ∼ 90 GM). We demonstrate that this new type of photocleavable system exhibits very efficient two-photon polymerization abilities with performances amplified by more than two orders of magnitude with regards to those of a commercially available type I photoinitiator (Lucirin TPO-L ...
DOI:
10.1039/c9cc02923k

3. Design and photoisomerization dynamics of a new family of synthetic 2-stroke light driven molecular rotary motors

Author:
Filatov, Michael; Paolino, Marco; Min, Seung Kyu; Choi, Cheol Ho
Source:
Chemical communications 2019 v.55 no.36 pp. 5247-5250
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; photoisomerization; temperature;     Show all 3 Subjects
Abstract:
... A new family of light driven molecular rotary motors, which can be synthesized from easily available precursor compounds and which are capable of completing a full 360° revolution by two photoisomerization steps only, is proposed. The non-adiabatic molecular dynamic simulations show that the photoisomerization steps of the motor's working cycle occur on an ultrafast time scale (ca. 200–300 fs), ha ...
DOI:
10.1039/c9cc01955c

4. Analysis of chemical compounds in beverages – Guidance for establishing a compositional analysis

Author:
Templ, Matthias; Templ, Barbara
Source:
Food chemistry 2020 v.325 pp. 126755
ISSN:
0308-8146
Subject:
chemical compounds,   etc   ; beers; chemical composition; principal component analysis;     Show all 4 Subjects
Abstract:
... In recent years, much analysis has been carried out regarding the chemical compositions of nonalcoholic and alcoholic beverages. However, no study has ever considered the compositional pitfalls inherent in such studies, which may lead to arbitrary results. Two approaches were compared in this paper, compositional data analysis (CoDa) and classical statistical analyses, to demonstrate (1) how aging ...
DOI:
10.1016/j.foodchem.2020.126755

5. Chromenopyrazole-based bipolar host materials for solution-processable thermally activated delayed fluorescence OLEDs exhibiting high efficiency and low roll-off

Author:
Godumala, Mallesham; Yoon, Jiwon; Lee, Chiho; Jeong, Ji-Eun; Park, Sungnam; Woo, Han Young; Cho, Min Ju; Choi, Dong Hoon
Source:
Chemical communications 2019 v.55 no.86 pp. 12952-12955
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; chemical reactions; fluorescence;     Show all 3 Subjects
Abstract:
... This study reports the design, synthesis, and characterization of two new bipolar host materials, DCzCP and TCzCP. Both materials were implemented as hosts by doping a known green thermally activated delayed fluorescent (TADF) emitter (t4CzIPN) in solution-processable OLEDs. DCzCP-based devices afford the best performance with the maximum external quantum efficiency (EQE) of 21.2%. Notably, the EQ ...
DOI:
10.1039/c9cc05983k

6. Correction: Fluorescence of a chiral pentaphene derivative derived from the hexabenzocoronene Motif

Author:
Rietsch, Philipp; Soyka, Jan; Brülls, Steffen; Er, Jasmin; Hoffmann, Katrin; Beerhues, Julia; Sarkar, Biprajit; Resch-Genger, Ute; Eigler, Siegfried
Source:
Chemical communications 2019 v.55 no.85 pp. 12879
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; chemical reactions; fluorescence;     Show all 3 Subjects
Abstract:
... Correction for ‘Fluorescence of a chiral pentaphene derivative derived from the hexabenzocoronene Motif’ by Philipp Rietsch et al., Chem. Commun., 2019, 55, 10515–10518. ...
DOI:
10.1039/c9cc90456e

7. Correlation at two-dimensional charge-transfer FeSe interface

Author:
Huang, Yulong; Hu, Yong; Hu, Feng; Yang, Ruizhe; Li, Changning; Armstrong, Jason N.; Ren, Shenqiang
Source:
Chemical communications 2019 v.55 no.84 pp. 12643-12646
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; dimerization; nanosheets; temperature;     Show all 4 Subjects
Abstract:
... The charge transfer and spin coupling effects are explored at the interface of two-dimensional (2D) superconducting FeSe nanosheets and molecular photochromic potassium-7,7,8,8-tetracyanoquinodimethane (KTCNQ). Light-induced conductivity in 2D FeSe nanosheets is enhanced by the electron doping from KTCNQ by the destabilized spin-Peierls phase through their interface. Furthermore, the spin coupling ...
DOI:
10.1039/c9cc06163k

8. A formal (5+1) annulation reaction from heterodimerization of two different isocyanides: stereoselective synthesis of 2H-benzo[b][1,4]oxazin-2-one

Author:
Su, Shikuan; Hu, Jie; Cui, Yongmei; Tang, Chongrong; Chen, Yali; Li, Jian
Source:
Chemical communications 2019 v.55 no.81 pp. 12243-12246
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; dimerization; stereoselective synthesis;     Show all 3 Subjects
Abstract:
... A novel (5+1) annulation reaction of functionalized 2-isocyanophenyloxyacrylate and aromatic, aliphatic isocyanides has been disclosed. This domino reaction involves the unusual heterodimerization of two different isocyanides and allows for a quick access to many 2H-benzo[b][1,4]oxazin-2-one derivatives. ...
DOI:
10.1039/c9cc06678k

9. Photolysis of a calixpyridinium-based supramolecular amphiphilic assembly and its selective turn-on fluorescence recognition of lysine in water

Author:
Wang, Kui; Dou, Hong-Xi; Wang, Meng-Meng; Wu, Yue; Zhang, Ze-Hao; Xing, Si-Yang; Zhu, Bo-Lin; Feng, Yu-Xin
Source:
Chemical communications 2019 v.55 no.81 pp. 12235-12238
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; fluorescence; lysine; photolysis;     Show all 4 Subjects
Abstract:
... A new calixpyridinium-based light-responsive host–guest recognition motif was found in this work. This host–guest recognition motif was further discovered to be applied as a selective turn-on fluorescent sensor for lysine over other natural amino acids. ...
DOI:
10.1039/c9cc07020f

10. The chiral amine triggered self-assembly of achiral emissive molecules into circularly polarized luminescent supramolecular assemblies

Author:
Sang, Yutao; Yang, Dong; Duan, Pengfei; Liu, Minghua
Source:
Chemical communications 2019 v.55 no.74 pp. 11135-11138
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; chemical reactions; luminescence;     Show all 3 Subjects
Abstract:
... Enantiomeric diaminocyclohexane was found to trigger the self-assembly of achiral monomers into chiral supramolecular assemblies with strong circularly polarized luminescence. ...
DOI:
10.1039/c9cc05109k

11. Fluorescence of a chiral pentaphene derivative derived from the hexabenzocoronene Motif

Author:
Rietsch, Philipp; Soyka, Jan; Brülls, Steffen; Er, Jasmin; Hoffmann, Katrin; Beerhues, Julia; Sarkar, Biprajit; Resch-Genger, Ute; Eigler, Siegfried
Source:
Chemical communications 2019 v.55 no.71 pp. 10515-10518
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; carbon; fluorescence; oxidation;     Show all 4 Subjects
Abstract:
... A new fluorescent pentaphene derivative is presented that differs from hexabenzocoronene (HBC) by one carbon atom in the basal plane skeleton. A 500% increased fluorescence quantum yield is measured compared to the HBC derivative. The pentaphene compound, obtained by a modified Scholl oxidation, is also emissive in the solid-state, due to the packing motif in the crystal. ...
DOI:
10.1039/c9cc05451k

12. Helical assembly of a dithienogermole exhibiting switchable circularly polarized luminescence

Author:
Hirano, Kyohei; Ikeda, Toshiaki; Fujii, Naoka; Hirao, Takehiro; Nakamura, Masashi; Adachi, Yohei; Ohshita, Joji; Haino, Takeharu
Source:
Chemical communications 2019 v.55 no.71 pp. 10607-10610
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; chemical reactions; luminescence;     Show all 3 Subjects
Abstract:
... Dithienogermole derivatives S- and R-1 possessing phenylisoxazoles and chiral side chains were synthesized. The helical assembly of 1 in methylcyclohexane exhibited circularly polarized luminescence (CPL). The CPL signals of the assembly in the elongation regime were inverted with respect to those in the nucleation regime. ...
DOI:
10.1039/c9cc05253d

13. Diphosphene radical cations and dications with a π-conjugated C₂P₂C₂-framework

Author:
Sharma, Mahendra K.; Rottschäfer, Dennis; Blomeyer, Sebastian; Neumann, Beate; Stammler, Hans-Georg; van Gastel, Maurice; Hinz, Alexander; Ghadwal, Rajendra S.
Source:
Chemical communications 2019 v.55 no.70 pp. 10408-10411
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; cations; chemical reactions;     Show all 3 Subjects
Abstract:
... The synthesis and characterization of the crystalline diphosphene radical cations [{(NHC)C(Ph)}P]₂(GaCl₄) (NHC = IPr = C{(NDipp)CH}₂3, SIPr = C{(NDipp)CH₂}₂4; Dipp = 2,6-iPr₂C₆H₃) and dications [{(NHC)C(Ph)}P]₂(GaCl₄)₂ (NHC = IPr 5, SIPr 6) featuring a π-conjugated C₂P₂C₂-framework has been reported. ...
DOI:
10.1039/c9cc04701h

14. Modulating charge carrier density and mobility in doped graphene by covalent functionalization

Author:
Arellano, Luis M.; Yue, Sun; Atienzar, Pedro; Gómez-Escalonilla, María J.; Ortega-Higueruelo, Francisco J.; Fierro, José Luis G.; García, Hermenegildo; Langa, Fernando
Source:
Chemical communications 2019 v.55 no.67 pp. 9999-10002
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; chemical reactions; graphene;     Show all 3 Subjects
Abstract:
... Covalent B-functionalization of B-doped graphene has been performed for the first time. The electronic properties and Hall effect of functionalized N- and B-doped graphene can be tuned by tailoring the electron-donating/-withdrawing properties of the organic addend. ...
DOI:
10.1039/c9cc04571f

15. High brightness circularly polarized blue emission from non-doped OLEDs based on chiral binaphthyl-pyrene emitters

Author:
Zhang, Xueyan; Zhang, Yu; Li, Yang; Quan, Yiwu; Cheng, Yixiang; Li, Yunzhi
Source:
Chemical communications 2019 v.55 no.66 pp. 9845-9848
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; chemical reactions; gels;     Show all 3 Subjects
Abstract:
... Two pairs of CPL-active binaphthyl-pyrene emitters with good photophysical properties and excellent chiroptical performances can emit high brightness blue CP-EL. The theoretical calculation results show that R-/S-5 can form rigid helix π–π stacking in the aggregation state which may greatly contribute to gEL of CP-OLEDs. ...
DOI:
10.1039/c9cc04289j

16. Isothermal amplification of specific DNA molecules inside giant unilamellar vesicles

Author:
SatoPresent address: School of Computer Science, Tokyo Institute of Technology, Kanagawa, 226-8502, Japan., Yusuke; Komiya, Ken; Kawamata, Ibuki; Murata, Satoshi; Nomura, Shin-ichiro M.
Source:
Chemical communications 2019 v.55 no.62 pp. 9084-9087
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; DNA; chemical reactions;     Show all 3 Subjects
Abstract:
... An isothermal amplification circuit for specific DNA molecules was implemented in giant unilamellar vesicles. Using this circuit, over 5000-fold amplification of output DNAs was achieved, and the amplification behaviour depended on the concentration of input signal DNAs in a cell-sized compartment. Moreover, initiation of the amplification by photo-stimulation was demonstrated. ...
DOI:
10.1039/c9cc03277k

17. Mechanism and regioselectivity of the anionic oxidative rearrangement of 1,3-diketones towards all-carbon quaternary carboxylates

Author:
BrattThese authors contributed equally to this work., Emma; Suárez-Pantiga, Samuel; Johansson, Magnus J.; Mendoza, Abraham
Source:
Chemical communications 2019 v.55 no.60 pp. 8844-8847
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; chemical reactions; regioselectivity;     Show all 3 Subjects
Abstract:
... The oxidative rearrangement of 1,3-diketones is an underexplored alternative to enolate chemistry in the synthesis of all-carbon quaternary carboxylates. The mechanistic investigation of this reaction has resulted in a mild base mediated protocol, whose regioselectivity has been studied in challenging acyclic substrates. ...
DOI:
10.1039/c9cc03331a

18. Adjustable chiral self-sorting and self-discriminating behaviour between diamond-like Tröger's base-linked cryptands

Author:
Chen, Yuan; Qian, Cheng; Zhao, Qian; Cheng, Ming; Dong, Xinran; Zhao, Yue; Jiang, Juli; Wang, Leyong
Source:
Chemical communications 2019 v.55 no.56 pp. 8072-8075
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; chemical reactions; enantiomers;     Show all 3 Subjects
Abstract:
... Two isomers of Tröger's base-linked cryptands 5a and 5b were synthesized, and both of them have two chiral N-centers, exhibiting rare diamond-like scaffolds. Particularly, when growing from the solution of rac-5a, a single enantiomer RNRN-5a was found in the crystal cell, revealing chiral self-sorting behaviour. However, when adding CF₃COOH to protonate Tröger's base in the solution of rac-5a, two ...
DOI:
10.1039/c9cc03577j

19. A resettable supramolecular platform for constructing scalable encoders

Author:
Yang, Chunrong; Yang, Shu; Song, Lingbo; Yao, Ye; Lin, Xiao; Cai, Kaicong; Yang, Qianfan; Tang, Yalin
Source:
Chemical communications 2019 v.55 no.55 pp. 8005-8008
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; chemical reactions; prototypes;     Show all 3 Subjects
Abstract:
... A supramolecular platform prototype for implementing resettable encoding functions was designed, which could be configured into a series of encoders, from 4-to-2 to 7-to-3, and even 14-to-4 ECs. ...
DOI:
10.1039/c9cc00577c

20. Rational structural design of benzothiazolium-based crystal HDB-T with high nonlinearity and efficient terahertz-wave generation

Author:
Shi, Jingkai; Liang, Fei; He, Yixin; Zhang, Xinyuan; Lin, Zheshuai; Xu, Degang; Hu, Zhanggui; Yao, Jianquan; Wu, Yicheng
Source:
Chemical communications 2019 v.55 no.55 pp. 7950-7953
ISSN:
1364-548X
Subject:
chemical compounds,   etc   ; cations; chemical reactions;     Show all 3 Subjects
Abstract:
... A new promising nonlinear optical crystal C₂₅H₂₅NO₄S₂ (HDB-T, P2₁ space group) exhibits significant macroscopic second-order optical nonlinearity about 1.5 times larger than that of the benchmark OH1 crystal benefiting from optimized orientated polar HDB cations. Widely tunable monochromatic terahertz-wave from 0.1 to 20 THz in the HDB-T crystal was realized for the first time. ...
DOI:
10.1039/c9cc03188j