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Search for "self-assembling" in Full Text gives 62 result(s) in Beilstein Journal of Organic Chemistry.

Control over molecular motion using the cistrans photoisomerization of the azo group

  • Estíbaliz Merino and
  • María Ribagorda

Beilstein J. Org. Chem. 2012, 8, 1071–1090, doi:10.3762/bjoc.8.119

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  • be amplified when the azobenzene is anchored to a more complex system [128]. The cooperative combination of each individual photoisomerization can increase the dynamic response if the azobenzenes are self-assembling, generating an uniform motion [129]. An illustrative example is given in Figure 17
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Published 12 Jul 2012

Liquid-crystalline nanoparticles: Hybrid design and mesophase structures

  • Gareth L. Nealon,
  • Romain Greget,
  • Cristina Dominguez,
  • Zsuzsanna T. Nagy,
  • Daniel Guillon,
  • Jean-Louis Gallani and
  • Bertrand Donnio

Beilstein J. Org. Chem. 2012, 8, 349–370, doi:10.3762/bjoc.8.39

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  • the surface of the particle of interest. In so doing, it is hoped that the self-assembling and mesogenic potential of the ligand will be transferred to the hybrid product. Therefore, given their importance in liquid-crystal science, it is not surprising that rodlike or calamitic mesogenic molecules
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Published 08 Mar 2012

Synthesis and self-assembly of 1-deoxyglucose derivatives as low molecular weight organogelators

  • Guijun Wang,
  • Hao Yang,
  • Sherwin Cheuk and
  • Sherman Coleman

Beilstein J. Org. Chem. 2011, 7, 234–242, doi:10.3762/bjoc.7.31

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  • functionalization of the anomeric position and the 4- and 6-hydroxy groups. We have found that further derivatization of the glucose headgroup to form different glycolipids can result in organogelators [34][35][36][37]. Previously, we have systematically synthesized and studied the self-assembling properties of a
  • used for the preparation of self assembling gelators when the hydrophobic tails are chosen judicially. For instance, long chain diacetylene containing diester derivatives of 8 are effective gelators, and they can be polymerized using a TLC lamp more readily than the corresponding diesters of 1. The
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Published 21 Feb 2011

Amphiphilic dendritic peptides: Synthesis and behavior as an organogelator and liquid crystal

  • Baoxiang Gao,
  • Hongxia Li,
  • Defang Xia,
  • Sufang Sun and
  • Xinwu Ba

Beilstein J. Org. Chem. 2011, 7, 198–203, doi:10.3762/bjoc.7.26

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  • based dendrimers, and especially to their gelation and liquid crystal properties [12][13]. Recently, a type of amphiphilic dendritic dipeptide was described by Percec et al. as self-assembling in helical pores [14]. In addition, Takashi Kato and co-workers have recently reported that dendritic
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Published 11 Feb 2011

Differences between β-Ala and Gly-Gly in the design of amino acids-based hydrogels

  • Andreea Pasc,
  • Firmin Obounou Akong,
  • Sedat Cosgun and
  • Christine Gérardin

Beilstein J. Org. Chem. 2010, 6, 973–977, doi:10.3762/bjoc.6.109

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  • organogels and hydrogels of low molecular weight gelators (LMWG), establishing the relationship between the molecular structure and the gelation mechanism is still a challenge. In this paper our interest focuses on the consequences of slight molecular modifications on the self-assembling behaviour of β-Ala
  • properties were related to hydrogen bonding, hydrophobic interactions and π-π stacking. Herein, β-Ala-His-EO2-Alk was fully characterised by FT-IR, NMR, SAXS and SEM and the gelation mechanism is discussed. It appears that the number of amide groups determines the self-assembling behaviour into 1D or 2D/3D
  • molecular structure in supramolecular self-assembling, i.e., the number of H-bond donor and acceptor amide moieties (3 in β-Ala-His-amphiphile vs 4 Gly-Gly-His-amphiphile) and consequently, to obtain further insights on the gelation mechanism. The hydrogels were characterised by a number of techniques
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Published 11 Oct 2010

Oxalyl retro-peptide gelators. Synthesis, gelation properties and stereochemical effects

  • Janja Makarević,
  • Milan Jokić,
  • Leo Frkanec,
  • Vesna Čaplar,
  • Nataša Šijaković Vujičić and
  • Mladen Žinić

Beilstein J. Org. Chem. 2010, 6, 945–959, doi:10.3762/bjoc.6.106

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  • finally result in the formation of amyloid plaques [1][2][3][4]. During the last two decades there has been a growing interest in self-organization of small peptide models capable of self-assembling into highly organized supramolecular structures with potential use as novel bio- or nano-materials
  • possessing advanced properties and functions [5][6][7][8][9][10]. It has been shown that even short peptides, such as dipeptides, tripeptides or tetrapeptides, themselves or incorporated into more complex structures, are capable of self-assembling into fibers or fibrils [11][12][13][14][15]. In a number of
  • lipophilic solvents, where such types of intermolecular interactions are highly favored, formation of wide and relatively short tapes could be observed (TEM, (S,R)-1b toluene gel, Figure 4) possibly due to the enhanced self-assembling in the direction of intermolecular hydrogen bonds. In contrast, gelling of
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Published 04 Oct 2010

Pyridinium based amphiphilic hydrogelators as potential antibacterial agents

  • Sayanti Brahmachari,
  • Sisir Debnath,
  • Sounak Dutta and
  • Prasanta Kumar Das

Beilstein J. Org. Chem. 2010, 6, 859–868, doi:10.3762/bjoc.6.101

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  • can gelate water. The routes adopted for the synthesis of such molecules were extremely simple. Systematic variations of the structure of the amphiphile reveal that minute architectural changes at molecular level influences the self-assembling mechanism of the gelation process. The major responsible
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Published 21 Sep 2010

Molecular recognition of organic ammonium ions in solution using synthetic receptors

  • Andreas Späth and
  • Burkhard König

Beilstein J. Org. Chem. 2010, 6, No. 32, doi:10.3762/bjoc.6.32

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Published 06 Apr 2010

A review of new developments in the Friedel–Crafts alkylation – From green chemistry to asymmetric catalysis

  • Magnus Rueping and
  • Boris J. Nachtsheim

Beilstein J. Org. Chem. 2010, 6, No. 6, doi:10.3762/bjoc.6.6

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  • . using self-assembling palladium-phosphane catalysts [83]. Further procedures for the 3-benzylation and allylation of indole employing FeCl3 and InBr3 have been developed more recently by Yadav and Jana [84][85]. Both procedures are very similar and employ 10 mol% of catalyst. However, the reaction with
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Published 20 Jan 2010

Self-association of an indole based guanidinium-carboxylate-zwitterion: formation of stable dimers in solution and the solid state

  • Carolin Rether,
  • Wilhelm Sicking,
  • Roland Boese and
  • Carsten Schmuck

Beilstein J. Org. Chem. 2010, 6, No. 3, doi:10.3762/bjoc.6.3

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  • ; self-assembly; supramolecular chemistry; zwitterions; Introduction The vast majority of supramolecular self-assembling systems known so far form stable assemblies only in non polar solvents such as chloroform, as they mainly rely on hydrogen bonds [1][2][3][4]. The design of self-complementary
  • than in 1 which also reduces the stability of H-bonded ion pairs. Hence, geometric as well as electronic fit is the important factor controlling the stability of aggregates obtained from such self-complementary molecules. Nevertheless, zwitterion 2 is an efficient self-assembling molecule. This indole
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Published 14 Jan 2010

Functional properties of metallomesogens modulated by molecular and supramolecular exotic arrangements

  • Alessandra Crispini,
  • Mauro Ghedini and
  • Daniela Pucci

Beilstein J. Org. Chem. 2009, 5, No. 54, doi:10.3762/bjoc.5.54

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  • ) derivatives prevented the single molecules self-assembling in dimers. Moreover, strong intermolecular contacts stabilized the crystalline state and no mesomorphic behaviour was observed below the melting point [52]. We decided to extend this work changing the substituents on the bipyridine ligands by
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Published 12 Oct 2009

Themed series in organo- fluorine chemistry

  • David O'Hagan

Beilstein J. Org. Chem. 2008, 4, No. 11, doi:10.3762/bjoc.4.11

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  • ]. Organo-fluorine compounds have also found a significant role in soft materials chemistry such as liquid crystals, photoresist polymers and self assembling monolayers [3]. Allied to this breadth of activity is a steady development in the number and range of fluorination reagents and methodologies. DAST
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Editorial
Published 25 Apr 2008
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