التفاصيل البيبلوغرافية
| العنوان: |
Dynamic Transformation of a Ag + ‑Coordinated Supramolecular Nanostructure from a 1D Needle to a 1D Helical Tube via a 2D Ribbon Accompanying the Conversion of Complex Structures |
| المؤلفون: |
Jeong Sang Oh (10150095), Ka Young Kim (1421482), Jaehyeon Park (819589), Hyeonju Lee (9243882), Younwoo Park (10150098), Jaeheung Cho (1327383), Shim Sung Lee (1493005), Hyungjun Kim (533683), Sung Ho Jung (1815847), Jong Hwa Jung (813601) |
| سنة النشر: |
2021 |
| المجموعة: |
Smithsonian Institution: Digital Repository |
| مصطلحات موضوعية: |
Biophysics, Biochemistry, Medicine, Genetics, Pharmacology, Cancer, Environmental Sciences not elsewhere classified, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, Information Systems not elsewhere classified, 2 D ribbon structure, nano, 1 D helical tube, achiral bipyridine-based ligand 1 G, 1 D helical, 2 D ribbon, morphology transformation process, 1 D Needle, 1 G, 1 D, II, 2 D Ribbon Accompanying, Ag |
| الوصف: |
We report a unique dynamic morphology transformation of a Ag + -coordinated supramolecular nanostructure accompanying the conversion of complex structures in aqueous solution. In the presence of AgNO 3 (1.0 equiv), the achiral bipyridine-based ligand 1G , possessing hydrazine and glycine moieties, preferentially generated a 1D needle-like structure (nanostructure I) based on the 1G AgNO 3 complex ( 1G :Ag + = 1:1) as a metastable product. Nanostructure I was then transformed into nanostructure II, which was composed of the 1G 3 Ag 2 (NO 3 ) 2 complex ( 1G :Ag + = 3:2) as the thermodynamically stable product. This nanostructure exhibited a 1D helical tubular structure with a uniform diameter via a 2D ribbon as an intermediator, which led to the generation of a circular dichroism (CD) signal with right-handed (P-type) helicity. The observed dynamic transformation was attributed to formation of the thermodynamically favored helical 1G 3 Ag 2 (NO 3 ) 2 complex. In addition, the helical 1G 3 Ag 2 (NO 3 ) 2 complex acted as an initiator in the transformation from the 1D needle-like structure to the 1D helical tube via a 2D ribbon. The enhanced Δ G ° value of nanostructure II compared to that of nanostructure I confirmed that nanostructure II is thermodynamically stable. More importantly, the transformation of supramolecular nanostructure I to nanostructure II occurred via an “on” pathway, even though the 1G AgNO 3 complex was converted to the 1G 3 Ag 2 (NO 3 ) 2 complex, which did not involve dissociation from nanostructure I into the monomeric 1G AgNO 3 complex species. In the kinetic study, the NO 3 – anion was found to act as an accelerator for the dynamic transformation from nanostructure I to nanostructure II. This result provides the first example of a dynamic transformation of a 1D needle-like structure into a 1D tubular structure via a 2D ribbon structure, accompanied by the conversion of a complex structure and the generation of a large CD signal for the metallo-supramolecular ... |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| Relation: |
https://figshare.com/articles/journal_contribution/Dynamic_Transformation_of_a_Ag_sup_sup_Coordinated_Supramolecular_Nanostructure_from_a_1D_Needle_to_a_1D_Helical_Tube_via_a_2D_Ribbon_Accompanying_the_Conversion_of_Complex_Structures/14039766 |
| DOI: |
10.1021/jacs.0c10678.s001 |
| الاتاحة: |
https://doi.org/10.1021/jacs.0c10678.s001 |
| Rights: |
CC BY-NC 4.0 |
| رقم الانضمام: |
edsbas.D8818739 |
| قاعدة البيانات: |
BASE |