51
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He S, Zhao H, Guo X, Xin G, Huang B, Ma L, Zhou X, Zhang R, Du D, Wu X, Xing Z, Huang W, Chen Q, He Y. Supramolecular organogelators based on Janus type AT nucleosides. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.08.058] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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52
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Hisamatsu Y, Banerjee S, Avinash MB, Govindaraju T, Schmuck C. A Supramolecular Gel from a Quadruple Zwitterion that Responds to Both Acid and Base. Angew Chem Int Ed Engl 2013; 52:12550-4. [DOI: 10.1002/anie.201306986] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Indexed: 12/25/2022]
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53
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Hisamatsu Y, Banerjee S, Avinash MB, Govindaraju T, Schmuck C. A Supramolecular Gel from a Quadruple Zwitterion that Responds to Both Acid and Base. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201306986] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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54
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Amphiphilic sulfamide as a low-molecular-mass hydrogelator: A novel mode of 3-D networks formed by hydrogen-bond-directed 2-D sheet assemblies. J Colloid Interface Sci 2013; 408:107-12. [DOI: 10.1016/j.jcis.2013.07.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Revised: 07/07/2013] [Accepted: 07/11/2013] [Indexed: 11/17/2022]
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55
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Li Y, Lam ESH, Tam AYY, Wong KMC, Lam WH, Wu L, Yam VWW. Cholesterol-/Estradiol-Appended Alkynylplatinum(II) Complexes as Supramolecular Gelators: Synthesis, Characterization, Photophysical and Gelation Studies. Chemistry 2013; 19:9987-94. [DOI: 10.1002/chem.201301510] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2013] [Indexed: 11/07/2022]
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56
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Affiliation(s)
- Yang Fan
- a College of Chemistry and Chemical Engineering, Xinyang Normal University , Xinyang , 464000 , P.R. China
| | - Zijuan Yang
- a College of Chemistry and Chemical Engineering, Xinyang Normal University , Xinyang , 464000 , P.R. China
| | - Xu Zhang
- b Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou , 350002 , P.R. China
| | - Xinhua Cao
- a College of Chemistry and Chemical Engineering, Xinyang Normal University , Xinyang , 464000 , P.R. China
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57
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An instant-formative heat-set organogel induced by small organic molecules at a high temperature. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2012.12.052] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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58
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Gavara R, Llorca J, Lima JC, Rodríguez L. A luminescent hydrogel based on a new Au(i) complex. Chem Commun (Camb) 2013; 49:72-4. [DOI: 10.1039/c2cc37262b] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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59
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60
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Kumar P, Kadam MM, Gaikar VG. Low Molecular Weight Organogels and Their Application in the Synthesis of CdS Nanoparticles. Ind Eng Chem Res 2012. [DOI: 10.1021/ie300947x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pradipta Kumar
- Department
of Chemical Engineering, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai-19,
India
| | - Mahesh M. Kadam
- Department
of Chemical Engineering, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai-19,
India
| | - Vilas G. Gaikar
- Department
of Chemical Engineering, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai-19,
India
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61
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Sun F, Zhang G, Zhang D. A new gelator based on tetraphenylethylene and diphenylalanine: Gel formation and reversible fluorescence tuning. ACTA ACUST UNITED AC 2012. [DOI: 10.1007/s11434-012-5430-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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62
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Kuang H, Wu S, Xie Z, Meng F, Jing X, Huang Y. Biodegradable amphiphilic copolymer containing nucleobase: synthesis, self-assembly in aqueous solutions, and potential use in controlled drug delivery. Biomacromolecules 2012; 13:3004-12. [PMID: 22889069 DOI: 10.1021/bm301169x] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Biodegradable nucleobase-grafted amphiphilic copolymer, the methoxyl poly (ethylene glycol)-b-poly (L-lactide-co-2-methyl-2(3-(2,3-dihydroxylpropylthio) propyloxycarbonyl)-propylene carbonate/1-carboxymethylthymine) (mPEG-b- P(LA-co-MPT)), was synthesized. (1)H NMR titration and FT-IR spectroscopy indicated that the hydrogen-bonding could be formed between mPEG-b-P(LA-co-MPT) and 9-hexadecyladenine (A-C16). The hydrophobic microenvironment of the amphiphilic copolymer can protect the complementary multiple hydrogen bonds between mPEG-b-P(LA-co-MPT) and A-C16 from water effectively. The addition of A-C16 not only lowered the critical aggregation concentration (CAC) of mPEG-b-P(LA-co-MPT)/A-C16 nanoparticles (NPs) in aqueous solution but also induced different morphologies, which can be observed by transmission electron microscopy (TEM). Meanwhile, dynamic light scattering (DLS) and turbidometry was utilized to evaluate the effect of temperature and pH change on the stability of mPEG-b-P(LA-co-MPT)/A-C16 NPs. Cytotoxicity evaluation showed good biocompatibility of the mPEG-b-P(LA-co-MPT)/A-C16 NPs. The in vitro drug release profile showed that with the increase of A-C16 content, the doxorubiucin (DOX) release at pH 7.4 decreased, while the faster release rate was observed with the addition of A-C16 with a pH of 5.0. Importantly, DOX-loaded NPs exerted comparable cytotoxicity against MDA-MB-231 cells. This work provided a new method to stabilize NP structure using hydrogen-bonds and would have the potential to be applied in controlled drug delivery.
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Affiliation(s)
- Huihui Kuang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
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63
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Buerkle LE, Rowan SJ. Supramolecular gels formed from multi-component low molecular weight species. Chem Soc Rev 2012; 41:6089-102. [PMID: 22677951 DOI: 10.1039/c2cs35106d] [Citation(s) in RCA: 502] [Impact Index Per Article: 41.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Low molecular weight supramolecular gels consist of small molecules (gelators) that in an appropriate solvent self-assemble into nano- or micro-scale network structures resulting in the formation of a gel. Most supramolecular gels consist of two parts, namely the solvent and the gelator. However, the concept of multi-component supramolecular gels, in which more than one compound is added to the solvent, offers a facile way (e.g. by changing the ratio of the different components) to tailor the properties of the gel. The simplest multi-component gels consist of two components added to the solvent and are the most widely studied to date. There are three general classes of such multi-component gels that have been investigated. The first class requires all the added components to access the gel; that is, no component forms a gel on its own. A second class uses two (or more) gelators which can either co-assemble or self-sort into distinct assemblies and the final class consists of one (or more) gelator and one (or more) non-gelling additive which can impact the assembly process of the gelator and therefore the gel's properties.
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Affiliation(s)
- Lauren E Buerkle
- Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
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64
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Choi SJ, Kuwabara J, Kanbara T. Physical and electrical characteristics of supramolecular polymer films based on guanosine derivatives modified with tetrathiafulvalene moiety. Polym J 2012. [DOI: 10.1038/pj.2012.47] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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65
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Das RN, Kumar YP, Pagoti S, Patil AJ, Dash J. Diffusion and birefringence of bioactive dyes in a supramolecular guanosine hydrogel. Chemistry 2012; 18:6008-14. [PMID: 22461410 DOI: 10.1002/chem.201103814] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2011] [Indexed: 11/10/2022]
Abstract
Transparent self-standing supramolecular hydrogels were readily prepared by the potassium-ion-mediated self-organization of guanosine and 8-bromoguanosine whilst the individual components precipitated within a few hours. VT-NMR spectroscopy showed that bromoguanosine was a superior gelator compared to guanosine. XRD analysis showed that gel formation was caused by stacked G-quartets. AFM analysis revealed dendritic architectures of the nanofibers in the two-component hydrogel network. DSC profiles showed that the hybrid hydrogels underwent sol-gel transition at lower temperature than the pure guanosine and bromoguanosine hydrogels. Interestingly, bioactive dyes, such as rose bengal, rhodamine-6-G, and fluorescein, could be diffused and released in a controlled manner. UV/Vis absorption and fluorescence spectroscopy and CLSM were used to investigate the diffusion behavior of dyes in the hydrogel network. These dyes exhibited strong birefringence in the gel network (0.07-0.1) as a result of the anisotropic organization.
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Affiliation(s)
- Rabindra Nath Das
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur Campus, Mohanpur 7412 52, Nadia, West Bengal, India
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66
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67
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68
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Jin Y, Lian Y, Du L. Self-assembly of N-acyl derivatives of gemcitabine at the air/water interface and the formation of nanoscale structures in water. Colloids Surf A Physicochem Eng Asp 2012. [DOI: 10.1016/j.colsurfa.2011.11.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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69
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Buerkle LE, von Recum HA, Rowan SJ. Toward potential supramolecular tissue engineering scaffolds based on guanosine derivatives. Chem Sci 2012. [DOI: 10.1039/c1sc00729g] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
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70
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Kuang H, Wu S, Meng F, Xie Z, Jing X, Huang Y. Core-crosslinked amphiphilic biodegradable copolymer based on the complementary multiple hydrogen bonds of nucleobases: synthesis, self-assembly and in vitro drug delivery. JOURNAL OF MATERIALS CHEMISTRY 2012; 22:24832. [DOI: 10.1039/c2jm34852g] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
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71
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Simeone L, Milano D, De Napoli L, Irace C, Di Pascale A, Boccalon M, Tecilla P, Montesarchio D. Design, synthesis and characterisation of guanosine-based amphiphiles. Chemistry 2011; 17:13854-65. [PMID: 22052615 DOI: 10.1002/chem.201101827] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2011] [Revised: 08/16/2011] [Indexed: 11/05/2022]
Abstract
A small library of sugar-modified guanosine derivatives has been prepared, starting from a common intermediate, fully protected on the nucleobase. Insertion of myristoyl chains and of diverse hydrophilic groups, such as an oligoethylene glycol, an amino acid or a disaccharide chain, connected through in vivo reversible ester linkages, or of a charged functional group provided different examples of amphiphilic guanosine analogues, named G1-G7 herein. All of the sugar-modified derivatives were positive in the potassium picrate test, showing an ability to form G-tetrads. CD spectra demonstrated that, as dilute solutions in CHCl(3), distinctive G-quadruplex systems may be formed, with spatial organisations dependent upon the structural modifications. Two compounds, G1 and G2, proved to be good low-molecular-weight organogelators in polar organic solvents, such as methanol, ethanol and acetonitrile. Ion transportation experiments through phospholipid bilayers were carried out to evaluate their ability to mediate H(+) transportation, with G5 showing the highest activity within the investigated series. Moreover, G3 and G5 exhibited a significant cytotoxic profile against human MCF-7 cancer cells in in vitro bioassays.
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Affiliation(s)
- Luca Simeone
- Department of Organic Chemistry and Biochemistry, University Federico II of Napoli, Via Cintia, 4, 80126 Napoli, Italy
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72
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Li X, Kuang Y, Lin HC, Gao Y, Shi J, Xu B. Supramolecular nanofibers and hydrogels of nucleopeptides. Angew Chem Int Ed Engl 2011; 50:9365-9. [PMID: 21948432 PMCID: PMC3251214 DOI: 10.1002/anie.201103641] [Citation(s) in RCA: 114] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2011] [Revised: 07/19/2011] [Indexed: 02/03/2023]
Affiliation(s)
| | | | | | | | | | - Bing Xu
- Department of Chemistry, Brandeis University, 415 South St., Waltham, MA 02454, USA, Fax: (+) 01-781-736-5201
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73
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74
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Seela F, Pujari SS, Schäfer AH. Hydrogelation and spontaneous fiber formation of 8-aza-7-deazaadenine nucleoside ‘click’ conjugates. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.07.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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75
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Li X, Kuang Y, Lin HC, Gao Y, Shi J, Xu B. Supramolecular Nanofibers and Hydrogels of Nucleopeptides. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201103641] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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76
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Kabashima SI, Tanaka S, Kageyama M, Yoshikawa I, Araki K. Hydrogen-bond-directed 2-D sheet assemblies of sulfamide derivatives: formation of giant vesicles with patchwork-like surface pattern. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:8950-5. [PMID: 21671603 DOI: 10.1021/la200985m] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Sulfamide derivatives showed high ability to form hydrogen-bond-directed two-dimensional (2-D) sheet assemblies of nanometer thickness. Further, fine-tuning of the side chain structures and preparation conditions allowed for the formation of micrometer-sized giant vesicles of 4b in water by the simple injection method. IR and XRD studies indicated that 4b having tetradecyl and oxyethylene-terminated alkyl side chains formed hydrogen-bond-directed 2-D nanosheet pairs. SEM, AFM, and TEM observation of the dried vesicles revealed that the vesicle membrane was composed of several lamellar-stacked layers of 2-D nanosheets and showed a characteristic patchwork-like pattern on the surface.
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77
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Duan P, Qin L, Zhu X, Liu M. Hierarchical Self‐Assembly of Amphiphilic Peptide Dendrons: Evolution of Diverse Chiral Nanostructures Through Hydrogel Formation Over a Wide pH Range. Chemistry 2011; 17:6389-95. [DOI: 10.1002/chem.201003049] [Citation(s) in RCA: 98] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2010] [Indexed: 11/09/2022]
Affiliation(s)
- Pengfei Duan
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 (P.R. China), Fax: (+86) ‐10‐62569564
| | - Long Qin
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 (P.R. China), Fax: (+86) ‐10‐62569564
| | - Xuefeng Zhu
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 (P.R. China), Fax: (+86) ‐10‐62569564
| | - Minghua Liu
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 (P.R. China), Fax: (+86) ‐10‐62569564
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78
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79
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Steed JW. Supramolecular gel chemistry: developments over the last decade. Chem Commun (Camb) 2011; 47:1379-83. [DOI: 10.1039/c0cc03293j] [Citation(s) in RCA: 546] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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80
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Wang X, Zhou L, Wang H, Luo Q, Xu J, Liu J. Reversible organogels triggered by dynamic K+ binding and release. J Colloid Interface Sci 2010; 353:412-9. [PMID: 20980017 DOI: 10.1016/j.jcis.2010.09.089] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2010] [Revised: 09/10/2010] [Accepted: 09/29/2010] [Indexed: 11/27/2022]
Abstract
In this study, a new lipophilic guanosine derivative was synthesized as an organogelator. The self-aggregation behavior of this organogelator was investigated by NMR, XRD and AFM. In solution, the lipophilic guanosine derivative can form a stable ribbon-like structure through NH(1)-N(7) and NH(2)-O(6) hydrogen bonds. However, gelation would occur in some aprotic solvents after the concentration reached a definite value. More interesting, the ribbon-like structure was able to change to G-quartets in the presence of K(+), which led to the transformation from a gel to a sol. Upon the addition of the cryptand [2.2.2], which can efficiently complex with K(+), G-quartets reverted to the original ribbon-like structure and the gel recovered. Subsequently, upon the addition of acids, K(+) was released from the cryptate with the transformation of gel-to-sol simultaneously. Finally, upon the addition of bases which deprotonated [H(+) ⊂ 2.2.2], the liberated cryptand [2.2.2] recaptured K(+) and the gel was regenerated again. This process of interconversion between G-ribbon 1(n) and octamer 1(8)·K(+) was well monitored by circular dichroism spectra.
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Affiliation(s)
- Xiaoguang Wang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China
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81
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Cui J, Zheng Y, Shen Z, Wan X. Alkoxy tail length dependence of gelation ability and supramolecular chirality of sugar-appended organogelators. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:15508-15515. [PMID: 20809603 DOI: 10.1021/la101494t] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A series of sugar-appended organogelators, 4-(4'-alkoxyphenyl)phenyl-β-O-D-glucoside (GBCn, where n = 1-12 denotes the number of carbon atom in the tail), are synthesized to elucidate the effect of terminal chain length on their gelation and chiral expression abilities in gels. In the mixture of H(2)O/dioxane (60/40 v/v), GBCn undergoes a phasic evolution of precipitation-solution-gel-precipitation-gel as its tail length increases from n = 1, 2, 3-6, and 7-10 to 11-12, respectively. Helical ribbons are observed in gels, but platelet-like structures are the dominant morphologies in the systems that precipitation happens. Combinatory analyses of microscopic, spectroscopic, and diffraction results reveal that the self-assembly into interdigitated bilayer structures of GBCn is driven by hydrogen bondings of sugar heads, π-π interactions of biphenyl rods, and hydrophobic interactions of alkoxy tails. The helical-morphology formation is caused by the significant steric repulsion between chiral moieties on the condition of the disordering or the size of alkoxy chains reaching the threshold of helical twisting and bending.
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Affiliation(s)
- Jiaxi Cui
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
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82
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Ogasawara S, Ito S, Miyasaka H, Maeda M. Photochromic Nucleobase Photoisomerized by Visible Light. CHEM LETT 2010. [DOI: 10.1246/cl.2010.956] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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83
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Steed JW. Anion-tuned supramolecular gels: a natural evolution from urea supramolecular chemistry. Chem Soc Rev 2010; 39:3686-99. [PMID: 20740235 DOI: 10.1039/b926219a] [Citation(s) in RCA: 512] [Impact Index Per Article: 36.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This tutorial review looks at the formation of low molecular weight gels from molecular principles using the well-explored supramolecular chemistry of ureas as an example. Synthesising lessons learned from classical urea inclusion chemistry, ureas in crystal engineering, ureas in self-assembly, urea functional groups in anion binding and sensing, and ureas as organocatalysts lead to the development and understanding of a new class of anion-tunable, urea-based soft materials. This review concludes with a look at emerging application areas for tunable gel-phase materials as controlled crystal growth media, both in templating metallic nanoparticles and in the growth and isolation of high quality crystals of molecular organic compounds, including polymorphic pharmaceuticals.
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Affiliation(s)
- Jonathan W Steed
- Department of Chemistry, Durham University, South Road, Durham, DH1 3LE, UK.
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84
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Neviani P, Sarazin D, Schmutz M, Blanck C, Giuseppone N, Spada GP. Hierarchical formation of fibrillar and lamellar self-assemblies from guanosine-based motifs. J Nucleic Acids 2010; 2010. [PMID: 20798860 PMCID: PMC2925466 DOI: 10.4061/2010/938536] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2010] [Revised: 04/07/2010] [Accepted: 05/27/2010] [Indexed: 11/24/2022] Open
Abstract
Here we investigate the supramolecular polymerizations of two lipophilic guanosine derivatives in chloroform by light scattering technique and TEM experiments. The obtained data reveal the presence of several levels of organization due to the hierarchical self-assembly of the guanosine units in ribbons that in turn aggregate in fibrillar or lamellar soft structures. The elucidation of these structures furnishes an explanation to the physical behaviour of guanosine units which display organogelator properties.
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Affiliation(s)
- Paolo Neviani
- Dipartimento di Chimica Organica "A. Mangini", Alma Mater Studiorum-Università di Bologna, Via San Giacomo 11, 40126 Bologna, Italy
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85
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Sawayama J, Yoshikawa I, Araki K. Hydrogen-bond-directed giant vesicles of guanosine derivatives in water: formation, structure, and stability. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:8030-8035. [PMID: 20192160 DOI: 10.1021/la904916d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Hydrogen-bond-directed giant supramolecular vesicles (diameter 1.20 +/- 0.30 microm (SD)) of an alkylsilylated deoxyguanosine derivative, 2a, were prepared faciley by mixing a small volume of a 2a/THF solution with water. The formation of 2-D inter-guanine hydrogen-bond networks of 2a within the vesicles was indicated by IR spectra. The vesicle solution was stable enough for more than 30 days, in a wide range of temperatures, and between pH 4 and 10 without showing lysis, fusion, precipitation, or leakage of the encapsulated fluorescent probe. In a typical micrometer-sized vesicle, a sufficiently large internal water phase for encapsulating water-soluble substances was surrounded by a multilamellar membrane 15-20 nm in thickness, which was composed of 6-9 layers of 2-D hydrogen-bond-directed sheet assemblies. AC-mode AFM observation of the vesicle on a silicon substrate further demonstrated the high stability and deformable properties of the vesicle membrane under vacuum or mechanical stress. The formation and properties of the vesicle membrane in water were analyzed from the viewpoint of the 2-D hydrogen-bond-directed sheet assemblies, and the scope of the design principle to use nonpolar soft segments as the shielding units of the hydrogen-bond networks in water is discussed.
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Affiliation(s)
- Jun Sawayama
- Institute of Industrial Science, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153 8505, Japan
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86
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Cui J, Liu A, Guan Y, Zheng J, Shen Z, Wan X. Tuning the helicity of self-assembled structure of a sugar-based organogelator by the proper choice of cooling rate. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:3615-3622. [PMID: 19921782 DOI: 10.1021/la903064n] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A novel sugar-appended low-molecular-mass gelator, 4''-butoxy-4-hydroxy-p-terphenyl-beta-D-glucoside (BHTG), was synthesized. It formed thermally reversible gels in a variety of aqueous and organic solvents. Three-dimensional networks made up of helical ribbons were observed in the mixture of H(2)O/1,4-dioxane (40/60 v/v). The handedness of the ribbons depended on the rate of gel formation. Fast-cooling process led to right-handed ribbons, while slow-cooling process led to left-handed ones. A combinatory analyses of microscopic, spectroscopic, and diffraction techniques revealed that BHTG formed a twisted interdigitated bilayer structure with a d spacing of 3.1 nm in gels through a kinetically controlled nucleation-growth process. There were two kinds of molecular orientations of BHTG in the nuclei, clockwise and anticlockwise, which dictated the growth of ribbons. One was metastable and formed first during the cooling process of gel formation. It was able to gradually transform into the more stable latter one with further decreasing temperature. Fast-cooling process did not leave enough time for the nuclei to evolve from metastable to stable state and the ribbons grown from them exhibited right-handedness. However, the metastable nuclei transformed into the stable one when cooled slowly and directed the molecules of BHTG to grow into left-handed aggregates.
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Affiliation(s)
- Jiaxi Cui
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
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87
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Lena S, Masiero S, Pieraccini S, Spada GP. Guanosine hydrogen-bonded scaffolds: a new way to control the bottom-up realisation of well-defined nanoarchitectures. Chemistry 2009; 15:7792-7806. [PMID: 19421976 DOI: 10.1002/chem.200802506] [Citation(s) in RCA: 129] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Over the last two decades, guanosine-related molecules have been of interest in different areas, ranging from structural biology to medicinal chemistry, supramolecular chemistry and nanotechnology. The guanine base is a multiple hydrogen-bonding unit, capable also of binding to cations, and fits very well with contemporary studies in supramolecular chemistry, self-assembly and non-covalent synthesis. This Concepts article, after reviewing on the diversification of self-organised assemblies from guanosine-based low-molecular-weight molecules, will mainly focus on the use of guanine moiety as a potential scaffold for designing functional materials of tailored physical properties.
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Affiliation(s)
- Stefano Lena
- Dipartimento di Chimica Organica A. Mangini, Alma Mater Studiorum-Università di Bologna, Via San Giacomo 11, 40126 Bologna, Italy
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88
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Buerkle LE, Li Z, Jamieson AM, Rowan SJ. Tailoring the properties of guanosine-based supramolecular hydrogels. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:8833-8840. [PMID: 19371040 DOI: 10.1021/la900746w] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We demonstrate that very stable hydrogels can be formed in aqueous potassium chloride solution by mixing a well-known gelator (guanosine, G) with a nongelator of similar structure (2',3',5'-tri-O-acetylguanosine, TAcG), and through a variety of characterization methods including rheology, small-angle neutron scattering, differential scanning calorimetry, and atomic force microscopy, we report substantial progress toward elucidating the factors that control the structure and stability of this fibrous gel system. The results suggest that the tailorability, long lifetime stability, and thermomechanical behavior of these gels derives from a reduction in the driving force toward crystallization with increased hydrophobic (TAcG) content, accompanied by a simultaneous decrease in fiber length and an increase in fiber width.
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Affiliation(s)
- Lauren E Buerkle
- Department of Macromolecular Science and Engineering, Case Western Reserve University, 2100 Adelbert Road, Cleveland, Ohio 44106-7202, USA
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89
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Neviani P, Mileo E, Masiero S, Pieraccini S, Lucarini M, Spada GP. Self-Assembled Hexadecanitroxide. Org Lett 2009; 11:3004-7. [DOI: 10.1021/ol901028h] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Paolo Neviani
- Alma Mater Studiorum - Università di Bologna, Dipartimento di Chimica Organica “A. Mangini”, Via San Giacomo 11, 40126 Bologna, Italy
| | - Elisabetta Mileo
- Alma Mater Studiorum - Università di Bologna, Dipartimento di Chimica Organica “A. Mangini”, Via San Giacomo 11, 40126 Bologna, Italy
| | - Stefano Masiero
- Alma Mater Studiorum - Università di Bologna, Dipartimento di Chimica Organica “A. Mangini”, Via San Giacomo 11, 40126 Bologna, Italy
| | - Silvia Pieraccini
- Alma Mater Studiorum - Università di Bologna, Dipartimento di Chimica Organica “A. Mangini”, Via San Giacomo 11, 40126 Bologna, Italy
| | - Marco Lucarini
- Alma Mater Studiorum - Università di Bologna, Dipartimento di Chimica Organica “A. Mangini”, Via San Giacomo 11, 40126 Bologna, Italy
| | - Gian Piero Spada
- Alma Mater Studiorum - Università di Bologna, Dipartimento di Chimica Organica “A. Mangini”, Via San Giacomo 11, 40126 Bologna, Italy
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90
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Pal A, Basit H, Sen S, Aswal VK, Bhattacharya S. Structure and properties of two component hydrogels comprising lithocholic acid and organic amines. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b903407b] [Citation(s) in RCA: 113] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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91
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Butler RS, Cohn P, Tenzel P, Abboud KA, Castellano RK. Synthesis, Photophysical Behavior, and Electronic Structure of Push−Pull Purines. J Am Chem Soc 2008; 131:623-33. [DOI: 10.1021/ja806348z] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Roslyn S. Butler
- Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200
| | - Pamela Cohn
- Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200
| | - Phillip Tenzel
- Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200
| | - Khalil A. Abboud
- Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200
| | - Ronald K. Castellano
- Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200
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92
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Supramolecular gels based on organic diacid monoamides of cholesteryl glycinate. J Colloid Interface Sci 2008; 327:233-42. [DOI: 10.1016/j.jcis.2008.08.014] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2008] [Revised: 07/17/2008] [Accepted: 08/07/2008] [Indexed: 11/19/2022]
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93
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Bogliotti N, Ritter A, Hebbe S, Vasella A. Oligonucleotide Analogues with Integrated Bases and Backbones. Part 19. Helv Chim Acta 2008. [DOI: 10.1002/hlca.200890236] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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94
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Palui G, Banerjee A. Fluorescent Gel from a Self-Assembling New Chromophoric Moiety Containing Azobenzene Based Tetraamide. J Phys Chem B 2008; 112:10107-15. [DOI: 10.1021/jp801657h] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Goutam Palui
- Chemistry Division, Indian Institute of Chemical Biology, Jadavpur, Kolkata- 700 032, India, and Department of Biological Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata- 700 032, India
| | - Arindam Banerjee
- Chemistry Division, Indian Institute of Chemical Biology, Jadavpur, Kolkata- 700 032, India, and Department of Biological Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata- 700 032, India
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95
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Hirst AR, Coates IA, Boucheteau TR, Miravet JF, Escuder B, Castelletto V, Hamley IW, Smith DK. Low-Molecular-Weight Gelators: Elucidating the Principles of Gelation Based on Gelator Solubility and a Cooperative Self-Assembly Model. J Am Chem Soc 2008; 130:9113-21. [DOI: 10.1021/ja801804c] [Citation(s) in RCA: 325] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrew R. Hirst
- Department of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom, Departament de Química Inorgànica i Orgànica, Universitat Jaume I, 12071, Castelló, Spain, and School of Chemistry, The University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Ian A. Coates
- Department of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom, Departament de Química Inorgànica i Orgànica, Universitat Jaume I, 12071, Castelló, Spain, and School of Chemistry, The University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Thomas R. Boucheteau
- Department of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom, Departament de Química Inorgànica i Orgànica, Universitat Jaume I, 12071, Castelló, Spain, and School of Chemistry, The University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Juan F. Miravet
- Department of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom, Departament de Química Inorgànica i Orgànica, Universitat Jaume I, 12071, Castelló, Spain, and School of Chemistry, The University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Beatriu Escuder
- Department of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom, Departament de Química Inorgànica i Orgànica, Universitat Jaume I, 12071, Castelló, Spain, and School of Chemistry, The University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Valeria Castelletto
- Department of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom, Departament de Química Inorgànica i Orgànica, Universitat Jaume I, 12071, Castelló, Spain, and School of Chemistry, The University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Ian W. Hamley
- Department of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom, Departament de Química Inorgànica i Orgànica, Universitat Jaume I, 12071, Castelló, Spain, and School of Chemistry, The University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - David K. Smith
- Department of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom, Departament de Química Inorgànica i Orgànica, Universitat Jaume I, 12071, Castelló, Spain, and School of Chemistry, The University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
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96
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Graziano C, Masiero S, Pieraccini S, Lucarini M, Spada GP. A Cation-Directed Switch of Intermolecular Spin−Spin Interaction of Guanosine Derivatives Functionalized with Open-Shell Units. Org Lett 2008; 10:1739-42. [DOI: 10.1021/ol8003832] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Carla Graziano
- Alma Mater Studiorum - Università di Bologna, Dipartimento di Chimica Organica “A. Mangini”, Via San Giacomo 11, I-40126 Bologna, Italy
| | - Stefano Masiero
- Alma Mater Studiorum - Università di Bologna, Dipartimento di Chimica Organica “A. Mangini”, Via San Giacomo 11, I-40126 Bologna, Italy
| | - Silvia Pieraccini
- Alma Mater Studiorum - Università di Bologna, Dipartimento di Chimica Organica “A. Mangini”, Via San Giacomo 11, I-40126 Bologna, Italy
| | - Marco Lucarini
- Alma Mater Studiorum - Università di Bologna, Dipartimento di Chimica Organica “A. Mangini”, Via San Giacomo 11, I-40126 Bologna, Italy
| | - Gian Piero Spada
- Alma Mater Studiorum - Università di Bologna, Dipartimento di Chimica Organica “A. Mangini”, Via San Giacomo 11, I-40126 Bologna, Italy
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97
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Steinlin T, Vasella A. Diels–Alder Additions, Ene Reactions, and Condensations of 4-(Acylamino)-5-nitrosopyrimidines – Synthesis of 8-Substituted Guanines and of 6-Substituted Pteridinones. Helv Chim Acta 2008. [DOI: 10.1002/hlca.200890048] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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98
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Numata M, Sugiyasu K, Kishida T, Haraguchi S, Fujita N, Park SM, Yun YJ, Kim BH, Shinkai S. Creation of polynucleotide-assisted molecular assemblies in organic solvents: general strategy toward the creation of artificial DNA-like nanoarchitectures. Org Biomol Chem 2008; 6:712-8. [PMID: 18264571 DOI: 10.1039/b713354e] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The influence of added polynucleotide on the gelation ability of nucleobase-appended organogelators was investigated. Uracil-appended cholesterol gelator formed a stable organogel in polar organic solvents such as n-butanol. It was found that the addition of the complementary polyadenylic acid (poly(A)) not only stabilizes the gel but also creates the helical structure in the original gel phase. Thymidine and thymine-appended gelators can form stable gel in apolar solvents, such as benzene, where poly(A)-lipid complex can act as a complementary template for the gelator molecules to create the fibrous composites. Based on these findings, we can conclude that self-assembling modes and gelation properties of nucleobase-appended organogelators are controllable by the addition of their complementary polynucleotide in organic solvents. We believe, therefore, that the present system can open the new paths to accelerate development of well-controlled one-dimensional molecular assembly systems, which would be indispensable for the creation of novel nanomaterials based on organic compounds.
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Affiliation(s)
- Munenori Numata
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, Fukuoka, 819-0395, Japan
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99
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Anderson K, Day G, Paterson M, Byrne P, Clarke N, Steed J. Structure Calculation of an Elastic Hydrogel from Sonication of Rigid Small Molecule Components. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200703785] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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100
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Anderson K, Day G, Paterson M, Byrne P, Clarke N, Steed J. Structure Calculation of an Elastic Hydrogel from Sonication of Rigid Small Molecule Components. Angew Chem Int Ed Engl 2008; 47:1058-62. [DOI: 10.1002/anie.200703785] [Citation(s) in RCA: 101] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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