دورية أكاديمية
Elucidation of the structure of poly(γ-benzyl-l-glutamate) nanofibers and gel networks in a helicogenic solvent.
| العنوان: | Elucidation of the structure of poly(γ-benzyl-l-glutamate) nanofibers and gel networks in a helicogenic solvent. |
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| المؤلفون: | Niehoff A; Institute for Technical Chemistry, Braunschweig University of Technology, Hans-Sommer-Straße 10, 38106 Braunschweig, Germany., Mantion A, McAloney R, Huber A, Falkenhagen J, Goh CM, Thünemann AF, Winnik MA, Menzel H |
| المصدر: | Colloid and polymer science [Colloid Polym Sci] 2013 Jun; Vol. 291 (6), pp. 1353-1363. Date of Electronic Publication: 2012 Dec 14. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Dr Dietrich Steinkopff Verlag Country of Publication: Germany NLM ID: 7507068 Publication Model: Print-Electronic Cited Medium: Print ISSN: 0303-402X (Print) Linking ISSN: 0303402X NLM ISO Abbreviation: Colloid Polym Sci Subsets: PubMed not MEDLINE |
| أسماء مطبوعة: | Publication: Darmstadt : Dr Dietrich Steinkopff Verlag Original Publication: Darmstadt, Steinkopff. |
| مستخلص: | The synthesis, characterization, self-assembly, and gel formation of poly(γ-benzyl-l-glutamate) (PBLG) in a molecular weight range from ca. 7,000-100,000 g/mol and with narrow molecular weight distribution are described. The PBLG is synthesized by the nickel-mediated ring-opening polymerization and is characterized by size-exclusion chromatography coupled with multiple-angle laser light scattering, NMR, and Fourier transform infrared spectroscopy. The self-assembly and thermoreversible gel formation in the helicogenic solvent toluene is investigated by transmission electron microscopy, atomic force microscopy, small-angle X-ray scattering, and synchrotron powder X-ray diffraction. At concentrations significantly below the minimum gelation concentration, spherical aggregates are observed. At higher concentrations, gels are formed, which show a 3D network structure composed of nanofibers. The proposed self-assembly mechanism is based on a distorted hexagonal packing of PBLG helices parallel to the axis of the nanofiber. The gel network forms due to branching and rejoining of bundles of PBLG nanofibers. The network exhibits uniform domains with a length of 200 ± 42 nm composed of densely packed PBLG helices. |
| References: | Phys Rev Lett. 1993 Mar 15;70(11):1727-1730. (PMID: 10053369) Chem Commun (Camb). 2005 Nov 21;(43):5420-2. (PMID: 16261233) J Phys Chem. 1968 Apr;72(4):1157-61. (PMID: 5641060) Nature. 1981 Feb 26;289(5800):813-4. (PMID: 7464947) |
| فهرسة مساهمة: | Keywords: Nanofiber; Nickel-mediated NCA polymerization; Physical/supramolecular organogel; Poly(γ-benzyl-l-glutamate) (PBLG); Self-assembly; Thermoreversible gel formation; α-Helix |
| تواريخ الأحداث: | Date Created: 20130607 Latest Revision: 20211021 |
| رمز التحديث: | 20231215 |
| مُعرف محوري في PubMed: | PMC3669512 |
| DOI: | 10.1007/s00396-012-2866-9 |
| PMID: | 23741081 |
| قاعدة البيانات: | MEDLINE |
Find this article in full text from Springer Verlag. 
Full Text Finder | تدمد: | 0303-402X |
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| DOI: | 10.1007/s00396-012-2866-9 |