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1. Hierarchically Compartmentalized Supramolecular Gels through Multilevel Self-Sorting

Author:
Wang, Yiming; Lovrak, Matija; Liu, Qian; Maity, Chandan; le Sage, Vincent A. A.; Guo, Xuhong; Eelkema, Rienk; van Esch, Jan H.
Source:
Journal of the American Chemical Society 2018 v.141 no.7 pp. 2847-2851
ISSN:
1520-5126
Subject:
gels
Abstract:
... Hierarchical compartmentalization through the bottom-up approach is ubiquitous in living cells but remains a formidable task in synthetic systems. Here we report on hierarchically compartmentalized supramolecular gels that are spontaneously formed by multilevel self-sorting. Two types of molecular gelators are formed in situ from nonassembling building blocks and self-assemble into distinct gel fi ...
DOI:
10.1021/jacs.8b09596

2. 3D printed gel electrophoresis device coupling with ICP-MS for online separation and detection of metalloproteins

Author:
Wang, Dingyi; He, Bin; Yan, Xueting; Nong, Qiying; Wang, Chao; Jiang, Jie; Hu, Ligang; Jiang, Guibin
Source:
Talanta 2019 v.197 pp. 145-150
ISSN:
0039-9140
Subject:
gel electrophoresis; gels,   etc   ; blood plasma; metalloproteins; rats;     Show all 5 Subjects
Abstract:
... We successfully developed a strategy to combine a customized gel electrophoresis device with ICP-MS for online separation and detection of metalloproteins. The self-designed horizontal column gel electrophoresis device was rapidly and easily fabricated in the laboratory via 3D printing with a low cost. The feasibility of 3D printing to fabricate this device was investigated by offline separation o ...
DOI:
10.1016/j.talanta.2019.01.025

3. Application of liposome membrane as the reaction field: A case study using the Horner–Wadsworth–Emmons reaction

Author:
Shimanouchi, Toshinori; Kitagawa, Yuki; Kimura, Yukitaka
Source:
Journal of bioscience and bioengineering 2019
ISSN:
1389-1723
Subject:
gels,   etc   ; case studies; stereoselectivity;     Show all 3 Subjects
Abstract:
... The properties of the liposome membrane as a reaction field were investigated by focusing on the Horner–Wadsworth–Emmons reaction as a case study. Use of the liposomes existing in the gel phase resulted in the enhanced activity of the substrates and furnished the products with same E/Z stereoselectivity as in the liposome-free system. The membrane environment in the gel phase most likely assisted ...
DOI:
10.1016/j.jbiosc.2019.01.015

4. Urine protein quantification in stacking gel by SDS‐PAGE

Author:
Jia, Jia; Pan, Jie; Xu, Hongpan; Wang, Sen; Bai, Bing
Source:
Electrophoresis 2019 v.40 no.4 pp. 487-490
ISSN:
0173-0835
Subject:
gels; polyacrylamide gel electrophoresis,   etc   ; protein content; pyrogallol; temperature; urine;     Show all 6 Subjects
Abstract:
... Urine total protein concentration is usually measured by the pyrogallol red‐molybdate (PRM) assay in clinical laboratories, but it is often subject to sample interference. Here, we introduce a stacking gel‐based method for accurate protein quantitation. In this method, the urine protein samples are run into the stacking gel by SDS‐PAGE where it is concentrated into a single band, and then quickly ...
DOI:
10.1002/elps.201800379

5. Piperazine as a versatile organic structure-directing agent for zeolite synthesis: effect of SiO2/Al2O3 ratio on phase selectivity

Author:
Bai, Luyi; Xiong, Zhiping; Zhan, Ensheng; Li, Shuang; Shen, Wenjie
Source:
Journal of materials science 2019 v.54 no.10 pp. 7589-7602
ISSN:
0022-2461
Subject:
gels,   etc   ; crystals; piperazine; texture; zeolites;     Show all 5 Subjects
Abstract:
... The synthesis of aluminosilicate zeolites by using piperazine as the organic structure-directing agent was studied. Under optimized conditions, zeolites ZSM-4 (MAZ), mordenite (MOR), ZSM-35 (FER), ZSM-5 (MFI) and ZSM-12 (MTW) were obtained in pure phase. The effect of SiO₂/Al₂O₃ ratio in the initial gel on zeolite phase selectivity was systematically investigated. The SiO₂/Al₂O₃ ratio ranges for t ...
DOI:
10.1007/s10853-019-03433-8

6. A simple approach to achieve a metastable metal oxide derived from carbonized metal–organic gels

Author:
Huang, Jing-Cheng; Shih, Yung-Han; Lirio, Stephen; Wu, Shiuan-Yau; Chen, Hsin-Tsung; Liu, Wan-Ling; Lin, Chia-Her; HuangDeceased August 22, 2017., Hsi-Ya
Source:
Chemical communications 2019 v.55 no.31 pp. 4475-4478
ISSN:
1364-548X
Subject:
gels,   etc   ; nanopores; pyrolysis; zirconium oxide;     Show all 4 Subjects
Abstract:
... A strategy for fabricating zirconium oxide doped nanoporous carbons derived from metal–organic gels (MOGs) is reported. For the first time, the achievement of metastable ZrO₂-NPCs is demonstrated. The direct pyrolysis of MOGs provided new perspective in developing metal oxide-doped NPCs and circumvented the shortcomings of existing methods in synthesizing metastable ZrO₂ doped NPCs. ...
DOI:
10.1039/c9cc00240e

7. Synthesis and Characterization of Novel Triarylamine Derivatives with Dimethylamino Substituents for Application in Optoelectronic Devices

Author:
Wu, Jung-Tsu; Lin, Hsiang-Ting; Liou, Guey-Sheng
Source:
ACS applied materials & interfaces 2019 v.11 no.16 pp. 14902-14908
ISSN:
1944-8252
Subject:
gels,   etc   ; color; electrochemistry; electrolytes; photoluminescence;     Show all 5 Subjects
Abstract:
... Two novel triphenylamine-based derivatives with dimethylamino substituents, N,N′-bis(4-dimethylaminophenyl)-N,N′-bis(4-methoxyphenyl)-1,4-phenylenediamine (NTPPA) and N,N′-bis(4-dimethylaminophenyl)-N,N′-bis(4-methoxyphenyl)-1,1′-biphenyl-4,4′-diamine (NTPB), were readily prepared for investigating the optical and electrochromic behaviors. These two obtained materials were introduced into electroc ...
DOI:
10.1021/acsami.9b00402

8. Correction: A robust and flexible bulk superhydrophobic material from silicone rubber/silica gel prepared by thiol–ene photopolymerization

Author:
Li, Yongsheng; Ren, Meng; Lv, Pengfei; Liu, Yingzhi; Shao, Hong; Wang, Cong; Tang, Changyu; Zhou, Yuanlin; Shuai, Maobing
Source:
Journal of materials chemistry A 2019 v.7 no.12 pp. 7256
ISSN:
2050-7496
Subject:
silica gel,   etc   ; hydrophobicity; rubber; silicone;     Show all 4 Subjects
Abstract:
... Correction for ‘A robust and flexible bulk superhydrophobic material from silicone rubber/silica gel prepared by thiol–ene photopolymerization’ by Yongsheng Li et al., J. Mater. Chem. A, 2019, DOI: 10.1039/c8ta11111a. ...
DOI:
10.1039/c9ta90065a

9. Stereoselective trimethylsilylation of α- and β-galactopyranoses

Author:
Asami, Yuri; Kawaguchi, Yuka; Kanie, Yoshimi; Abdu-Allah, Hajjaj; Suzuki, Katsuhiko; Kanie, Osamu
Source:
Carbohydrate research 2019 v.474 pp. 51-56
ISSN:
0008-6215
Subject:
gel chromatography,   etc   ; galactosides; moieties; stereoselectivity;     Show all 4 Subjects
Abstract:
... Trimethylsilylation of the anomeric hydroxyl groups of tetra-O-benzyl and tetra-O-acetyl galactopyranoses was investigated. Stereoselective formation of β-trimethylsilyl glycoside (β-TMS glycoside) of benzyl protected compound was achieved using N-trimethylsilyl diethylamine. In the course of the investigation of the selective synthesis of TMS galactosides using TMS-imidazole, we observed the form ...
DOI:
10.1016/j.carres.2019.01.013

10. Kinetics of sol-to-gel transition in irreversible particulate systems

Author:
Liu, Pai; Heinson, William R.; Sorensen, Christopher M.; Chakrabarty, Rajan K.
Source:
Journal of colloid and interface science 2019 v.550 pp. 57-63
ISSN:
0021-9797
Subject:
gels,   etc   ; Monte Carlo method; equations; gelation;     Show all 4 Subjects
Abstract:
... A comprehensive theory encompassing the kinetics of the sol-to-gel transition is yet to be formulated due to break-down of the mean-field Smoluchowski Equation. Using high temporal-resolution Monte Carlo simulation of irreversible aggregation systems, we show that this transition has three distinct regimes with kinetic exponent z∈1,2 corresponding to aggregation of sol clusters proceeding to the i ...
DOI:
10.1016/j.jcis.2019.04.067

11. Silver-based metal-organic gels as novel coreactant for enhancing electrochemiluminescence and its biosensing potential

Author:
Li, Yang; He, Li; Huang, Cheng Zhi; Li, Yuan Fang
Source:
Biosensors & bioelectronics 2019 v.134 pp. 29-35
ISSN:
0956-5663
Subject:
gels,   etc   ; DNA; biosensors; electrochemiluminescence; mixing; nanomaterials;     Show all 6 Subjects
Abstract:
... Metal-organic gels (MOGs), a kind of soft materials, were reported as a brand new category of novel solid coreactants for enhancing electrochemiluminescence (ECL) of Ru (bpy)32+ and derivatives. In this work, silver-based MOGs (Ag-MOGs) prepared by a one-step mixing and heating approach were demonstrated as novel efficient solid-state coreactants which differ from the previous research on ECL core ...
DOI:
10.1016/j.bios.2019.03.058

12. Tough and stretchable inorganic/organic double network ion gel containing gemini-type ionic liquid as a multiple hydrogen bond cross-linker

Author:
Yasui, Tomoki; Kamio, Eiji; Matsuyama, Hideto
Source:
RSC advances 2019 v.9 no.21 pp. 11870-11876
ISSN:
2046-2069
Subject:
gels,   etc   ; hydrogen; hydrogen bonding; ionic liquids;     Show all 4 Subjects
Abstract:
... Tough and stretchable inorganic/organic double network ion gels containing gemini-type ionic liquids with two OH groups in the di-cation, which can work as multiple hydrogen bond-based weak cross-linkers of the gel networks, are developed. ...
DOI:
10.1039/c9ra01790a

13. Circularly polarized light modulated supramolecular self-assembly for an azobenzene-based chiral gel

Author:
Shao, Kenan; Lv, Ziyu; Xiong, Yuting; Li, Guodong; Wang, Dongdong; Zhang, Haining; Qing, Guangyan
Source:
RSC advances 2019 v.9 no.18 pp. 10360-10363
ISSN:
2046-2069
Subject:
gels,   etc   ; light; optical isomerism; ultraviolet radiation;     Show all 4 Subjects
Abstract:
... UV light-triggered trans-to-cis isomerization of azobenzene usually results in the collapse of a self-assembly system owing to the breaking of molecular planarity. Interestingly, two totally opposite self-assembly trends have been detected when a C₂ᵥ-symmetric chiral gelator was irradiated by a circularly polarized light (CPL) with specific handedness, indicating that CPL could become a powerful t ...
DOI:
10.1039/c9ra01974j

14. Dynamic rheological properties of polyurethane-based magnetorheological gels studied using oscillation shear tests

Author:
Zhang, Guang; Wang, Huixing; Wang, Jiong; Zheng, Jiajia; Ouyang, Qing
Source:
RSC advances 2019 v.9 no.18 pp. 10124-10134
ISSN:
2046-2069
Subject:
gels,   etc   ; composite polymers; loss modulus; polyurethanes; viscoelasticity;     Show all 5 Subjects
Abstract:
... This paper studies the dynamic rheological behaviors of magnetorheological (MR) gels containing different CIP weight fractions suspended in polyurethane (PU). The dynamic characteristics of prepared MR gels are obtained using large amplitude oscillation shearing (LAOS). The influence of strain amplitude, applied coil current, CIP weight fraction and driving angular frequency on the dynamic rheolog ...
DOI:
10.1039/c8ra10297j

15. Controlling the size of spherulite and the degradation of poly(butylene succinate-co-adipate) by solvent and gel preparation temperature

Author:
Yamazaki, Hana; Kamitabira, Saya; Maeda, Tomoki; Hotta, Atsushi
Source:
Polymer degradation and stability 2019 v.162 pp. 106-111
ISSN:
0141-3910
Subject:
gels,   etc   ; DCB (herbicide); cyclohexanones; solvents; temperature; toluene;     Show all 6 Subjects
Abstract:
... The size of spherulites observed in the poly(butylene succinate-co-adipate) (PBSA) gel was found to be effectively controlled by the careful selection of the types of solvent and the gel preparation temperature. Additionally, the degradation behavior of the PBSA dried-gels with different sizes of spherulites was studied. By using different solvents, such as toluene (TOL), o-dichlorobenzene (o-DCB) ...
DOI:
10.1016/j.polymdegradstab.2019.02.014

16. Supramolecular Gel Phase Controlled [4 + 2] Diels–Alder Photocycloaddition for Electroplex Mediated White Electroluminescence

Author:
Das, Satyajit; Okamura, Naoki; Yagi, Shigeyuki; Ajayaghosh, Ayyappanpillai
Source:
Journal of the American Chemical Society 2019 v.141 no.14 pp. 5635-5639
ISSN:
1520-5126
Subject:
gels,   etc   ; color; cycloaddition reactions; electrochemiluminescence; white light;     Show all 5 Subjects
Abstract:
... Diels–Alder photocycloaddition of 9-phenylethynylanthracene results in multiple [4 + 2] and [4 + 4] cycloaddition products in solution, which can be controlled to form specific products under a restricted environment. We have exploited the gel phase of a 9-phenylethynylanthracence derivative as a confined medium to specifically yield the [4 + 2] cycloadduct in >90% yield. The photocycloadduct (ant ...
DOI:
10.1021/jacs.9b00955

17. Revisiting Volumes of Lipid Components in Bilayers

Author:
Nagle, John F.; Venable, Richard M.; Maroclo-Kemmerling, Ezekiel; Tristram-Nagle, Stephanie; Harper, Paul E.; Pastor, Richard W.
Source:
TheJournal of physical chemistry 2019 v.123 no.12 pp. 2697-2709
ISSN:
1520-5207
Subject:
gels,   etc   ; alkanes; lipid bilayers; lipids; temperature; thermodynamics;     Show all 6 Subjects
Abstract:
... In addition to obtaining the highly precise volumes of lipids in lipid bilayers, it has been desirable to obtain the volumes of parts of each lipid, such as the methylenes and terminal methyls on the hydrocarbon chains and the head group. Obtaining such component volumes from experiment and from simulations is re-examined, first by distinguishing methods based on apparent versus partial molar volu ...
DOI:
10.1021/acs.jpcb.8b12010

18. New insights into water dynamics of Portland cement paste with nano-additives using quasielastic neutron scattering

Author:
Kupwade-Patil, Kunal; Bumajdad, Ali; Brown, Craig M.; Tyagi, Madhusudan; Butch, Nicholas P.; Jamsheer, Abdullah F.; Büyüköztürk, Oral
Source:
Journal of materials science 2019 v.54 no.6 pp. 4710-4718
ISSN:
0022-2461
Subject:
gels,   etc   ; cement; nanomaterials; neutron diffraction; pastes; silica;     Show all 6 Subjects
Abstract:
... Early-age hydration kinetics of Portland cement with nano-additives such as nano-silica (NS) was examined using quasielastic neutron scattering (QENS). Cement pastes with different ratios of Portland cement to NS were prepared. The concentration of the NS played a major role in controlling the free and bound water during the hydration of the cement paste. Additionally, the effects of metakaolin (M ...
DOI:
10.1007/s10853-018-03212-x

19. Triggering the Shrinking/Swelling Process in Thin Gel Layers on Conducting Surfaces by Applying an Appropriate Potential

Author:
Marcisz, Kamil; Gawronska, Andzelika; Stojek, Zbigniew; Karbarz, Marcin
Source:
ACS applied materials & interfaces 2019 v.11 no.12 pp. 12114-12120
ISSN:
1944-8252
Subject:
gels,   etc   ; electrochemistry; electrodes; oxidation; pH; polymerization;     Show all 6 Subjects
Abstract:
... Negatively charged, pH-sensitive, very thin gel layers with accumulated hexaammineruthenium (II)/(III) were deposited on conducting surfaces. The gel was synthesized by applying an electrochemically induced free-radical polymerization method. This method allowed covering the electrode surface with an uniform and compact layer. The modified electrodes exhibited excellent current switch on/off behav ...
DOI:
10.1021/acsami.9b00713

20. Optical resolution via catalytic generation of chiral auxiliary

Author:
Kiyama, Hiroki; Inokuma, Tsubasa; Kuroda, Yusuke; Yamaoka, Yousuke; Takasu, Kiyosei; Yamada, Ken-ichi
Source:
Tetrahedron letters 2019 v.60 no.2 pp. 175-177
ISSN:
0040-4039
Subject:
gel chromatography,   etc   ; alcohols; enantiomers; hydrolysis; imines;     Show all 5 Subjects
Abstract:
... A new catalytic method for separating enantiomers of racemic compounds is proposed. Catalytic asymmetric addition of racemic trans-2-substituted cyclohexanols to imines provided diastereomeric mixtures of aminals, and the subsequent separation of the enantiomers by silica-gel column chromatography and the hydrolysis of the aminals produced the alcohols in an optically active form. ...
DOI:
10.1016/j.tetlet.2018.12.006