148172-25-2Relevant academic research and scientific papers
Anhydrous proton conduction in self-assembled and disassembled ionic molecules
Kumar, Avneesh,Pisula, Wojciech,Sieber, Christoph,Klapper, Markus,Müllen, Klaus
, p. 6074 - 6084 (2018/04/12)
In polymer based ionic conductors, the conductivity is suppressed by a low degree of chain mobility, therefore it is imperative to design a molecular system in which ionic groups can be mobilized and immobilized as a function of temperature to allow ions
POLYCATENAR LIGANDS AND HYBRID NANOPARTICLES MADE THEREFROM
-
Page/Page column 35; 38; 39, (2017/10/13)
Described herein are polycatenar ligand compounds and their use in the production of hybrid nanoparticles, typically nanocrystals. The present disclosure also relates to films containing the hybrid nanoparticles described herein and their use.
Polycatenar Ligand Control of the Synthesis and Self-Assembly of Colloidal Nanocrystals
Diroll, Benjamin T.,Jishkariani, Davit,Cargnello, Matteo,Murray, Christopher B.,Donnio, Bertrand
, p. 10508 - 10515 (2016/09/04)
Hydrophobic colloidal nanocrystals are typically synthesized and manipulated with commercially available ligands, and surface functionalization is therefore typically limited to a small number of molecules. Here, we report the use of polycatenar ligands d
Preferential formation of columnar mesophases via peripheral modification of discotic π-systems with immiscible side chain pairs
Sakurai, Tsuneaki,Tsutsui, Yusuke,Kato, Kenichi,Takata, Masaki,Seki, Shu
supporting information, p. 1490 - 1496 (2016/02/23)
When sufficient volume of dodecyl chains are attached at one imide position of a perylenediimide (PDI) or naphthalenediimide (NDI) core and triethyleneglycol (TEG) chains on the other side, the resulting molecules PDIC12/TEGG0, PDIC12/TEGG1, and NDIC12/TEGG0 self-assemble into a rectangular columnar mesophase with p2mg symmetry, forming hydrophobic/hydrophilic nano-segregation of side chains. The driving force of PDIC12/TEGG0 to form preferentially the rectangular columnar mesophase is given by the immiscibility between the side chain pairs - exclusion of other phases such as cubic, crystalline and amorphous phases, where thermodynamically unstable contacts between hydrophobic and hydrophilic chains considerably take place. In contrast, this preference is less found in the analogous molecules decorated with either dodecyl or TEG chains at both termini. PDIC12/C12G0 and PDITEG/TEGG0 form a hexagonal columnar mesophase because of the optimized chain/core volume. However, if the side chain volume grows, PDITEG/TEGG1 does not form a mesophase but undergoes a soft crystalline-isotropic phase transition, while PDIC12/C12G1 was revealed to destabilize its columnar mesophase but forms a micellar cubic phase. NDIC12/C12G0 resulted in a strong crystallization, while NDITEG/TEGG0 formed amorphous liquid. The molecular design strategy using immiscible side chain pairs potentially enables a variety of π-systems to stack up to form a columnar phase rather than other ordered phases, regardless of the chain/core volume balance.
Self-Assembly of Amphiphilic Janus Dendrimers into Mechanically Robust Supramolecular Hydrogels for Sustained Drug Release
Nummelin, Sami,Liljestr?m, Ville,Saarikoski, Eve,Ropponen, Jarmo,Nyk?nen, Antti,Linko, Veikko,Sepp?l?, Jukka,Hirvonen, Jouni,Ikkala, Olli,Bimbo, Luis M.,Kostiainen, Mauri A.
, p. 14433 - 14439 (2015/10/05)
Compounds that can gelate aqueous solutions offer an intriguing toolbox to create functional hydrogel materials for biomedical applications. Amphiphilic Janus dendrimers with low molecular weights can readily form self-assembled fibers at very low mass pr
Homochiral columns constructed by chiral self-sorting during supramolecular helical organization of hat-shaped molecules
Roche, Cécile,Sun, Hao-Jan,Prendergast, Margaret E.,Leowanawat, Pawaret,Partridge, Benjamin E.,Heiney, Paul A.,Araoka, Fumito,Graf, Robert,Spiess, Hans W.,Zeng, Xianbingon,Ungar, Goran,Percec, Virgil
, p. 7169 - 7185 (2014/06/09)
A library of dendronized cyclotriveratrylene (CTV) crowns substituted with chiral, racemic, or achiral peripheral alkyl chains, including enantiopure R and S branched alkyls, "racemic by mixture", "racemic by synthesis", n-octyl, and n-dodecyl groups was synthesized. In solvophobic solvents and in bulk they self-assemble in helical columns. Their solution and bulk shape-persistent supramolecular structures were determined by a complementary combination of circular dichroism (CD) and UV in solution and thin film, microspot CD in thin film, differential scanning calorimetry combined with fiber X-ray diffraction, computer simulation, and molecular models. In solution, self-assembly via a cooperative mechanism generates single-handed columns from enantiopure CTVs and mixtures of right-and left-handed columns from racemic by mixture, racemic by synthesis, other combinations of R and S, and even from achiral compounds. In bulk state all supramolecular columns form a 3D hexagonal crystalline phase, φhk (P63 symmetry), that can be obtained only from single-handed columns and a columnar hexagonal 2D liquid crystal, φh. The highest order φhk consists of enantiopure single-handed columns that are slightly distorted 12-fold triple helices. The "hat-shaped" dendronized CTV assembles in bent-branch pine-tree columns that allow interdigitation of alkyl groups in adjacent columns regardless of their direction. Enantiomerically rich, racemic, and achiral compositions undergo deracemization in the crystal state by transfer of the transient disc-like conformer of dendronized CTV from column to column during crown inversion. Solid state NMR experiments identified motional processes that allow such transfer. This unprecedented supramolecular chiral self-sorting will impact the creation of functions in complex systems.
Self-assembly and liquid-crystalline supramolecular organizations of semifluorinated block co-dendritic supermolecules
Bury, Izabela,Heinrich, Benoit,Bourgogne, Cyril,Mehl, Georg H.,Guillon, Daniel,Donnio, Bertrand
, p. 452 - 468 (2012/03/22)
The synthesis and self-organizing behaviour into liquid-crystalline mesophases of two libraries of segmented block co-dendrimers are described. The overall structure of the dendritic supermolecules consists of two chemically incompatible molecular moietie
Peripherally fused porphyrins via the Scholl reaction: Synthesis, self-assembly, and mesomorphism
Mysliwiec, Damian,Donnio, Bertrand,Chmielewski, Piotr J.,Heinrich, Benoit,Stepien, Marcin
supporting information; experimental part, p. 4822 - 4833 (2012/05/19)
Oxidative coupling of activated aryl groups attached to β-positions of the porphyrin ring provides convenient access to derivatives containing peripherally fused phenanthrene and benzo[g]chrysene units. Tetra(benzochryseno) porphyrin, reported here for the first time, contains a nonplanar, sterically locked π system and shows very intense electronic absorptions in the Q range of the electronic spectrum. Tetraphenanthroporphyrins show a tendency to aggregate in solution. In one case, a discrete dimer is formed, whose structure was investigated spectroscopically and theoretically. Derivatives bearing long alkyl chains are mesomorphic and exhibit columnar phases (tetraphenanthroporphyrins) and a monoclinic 3D phase (tetrabenzochrysenoporphyrin). The symmetry of column packing in the columnar phases is dependent on the number of alkyl chains per molecule. X-ray diffraction measurements show that, in spite of their nonplanarity, the aromatic cores in the mesophases are tightly stacked within the column. The corresponding stacking patterns were derived from the structure of the dimer, on the basis of geometrical analysis and molecular modeling.
Mesomorphic imidazolium salts: New vectors for efficient siRNA transfection
Dobbs, William,Heinrich, Benoit,Bourgogne, Cyril,Donnio, Bertrand,Terazzi, Emmanuel,Bonnet, Marie-Elise,Stock, Fabrice,Erbacher, Patrick,Bolcato-Bellemin, Anne-Laure,Douce, Laurent
supporting information; experimental part, p. 13338 - 13346 (2010/01/29)
The preparation of chloride (1n) and bromide (2n) derivatives of 1-methyl-3-[3,4-bis(alkoxy)benzyl]-4H-imidazolium with n ) 6, 12, 16, 18 is described. The two series of salts possess a rich thermotropic mesomorphism, chain-length de
Thermoreversible cis-cisoidal to cis-transoidal isomerization of helical dendronized polyphenylacetylenes
Percec, Virgil,Rudick, Jonathan G.,Peterca, Mihai,Wagner, Martin,Obata, Makoto,Mitchell, Catherine M.,Cho, Wook-Dong,Balagurusamy, Venkatachalapathy S. K.,Heiney, Paul A.
, p. 15257 - 15264 (2007/10/03)
High cis content (81-99%) cis-transoidal polyphenylacetylene (PPA) jacketed with amphiphilic self-assembling dendrons, poly[(3,4-3,5)mG2-4EBn] with m = 8, 10, 12, 14, 16, and (S)-3,7-dimethyloctyl, were synthesized by Rh(C≡CPh)(nbd)(PPh3)2
