Zobrazeno 1 - 10 of 154 pro vyhledávání: '"Amala Dass"'
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Akademický článek
Ligand Structure Determines Nanoparticles' Atomic Structure, Metal-Ligand Interface and Properties
Autor: Milan Rambukwella, Naga Arjun Sakthivel, Jared H. Delcamp, Luca Sementa, Alessandro Fortunelli, Amala Dass
Publikováno v: Frontiers in Chemistry, Vol 6 (2018)
The nature of the ligands dictates the composition, molecular formulae, atomic structure and the physical properties of thiolate protected gold nanomolecules, Aun(SR)m. In this review, we describe the ligand effect for three classes of thiols namely,
Externí odkaz: https://doaj.org/article/662fd01f160f40eaa5cf806ddfb29692
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2
Crystal structure of bulky-ligand-protected Au24(S-C4H9)16
Autor: Kalpani Hirunika Wijesinghe, Allen G. Oliver, Amala Dass
Publikováno v: Acta Crystallographica Section C Structural Chemistry. 78:430-436
Atomically precise thiolate-protected gold nanomolecules have attracted interest due to their distinct electronic and chemical properties. The structure of these nanomolecules is important for understanding their peculiar properties. Here, we report
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::41e3b04a6f149440c127b95011609b59
https://doi.org/10.1107/s2053229622006738
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4
Nanomolecular Metallurgy: Transformation from Au144(SCH2CH2Ph)60 to Au279(SPh-tBu)84
Autor: Luca Sementa, Naga Arjun Sakthivel, Amala Dass, Kalpani Hirunika Wijesinghe, Bokwon Yoon, Alessandro Fortunelli, Uzi Landman
Publikováno v: Journal of physical chemistry. C. (Online) 125 (2021): 20488–20502. doi:10.1021/acs.jpcc.1c04228
info:cnr-pdr/source/autori:Wijesinghe K.H.; Sakthivel N.A.; Sementa L.; Yoon B.; Fortunelli A.; Landman U.; Dass A./titolo:Nanomolecular Metallurgy: Transformation from Au144(SCH2CH2Ph)60 to Au279(SPh-tBu)84/doi:10.1021%2Facs.jpcc.1c04228/rivista:Journal of physical chemistry. C. (Online)/anno:2021/pagina_da:20488/pagina_a:20502/intervallo_pagine:20488–20502/volume:125
Transformation brought about by ligand exchange is one of the effective methods for the synthesis of gold-thiolate nanomolecules (AuNMs). In this method, the AuNMs are treated with an excess exogenous thiol at an elevated temperature. It has been fou
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::555390c3272787726ac85e6a2ebaf0f7
https://doi.org/10.1021/acs.jpcc.1c04228
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Design and Synthesis of RhodIndolizine Dyes with Improved Stability and Shortwave Infrared Emission up to 1250 nm
Autor: Satadru Chatterjee, Abdul Kalam Shaik, Kalpani Hirunika Wijesinghe, David Ndaleh, Amala Dass, Nathan I. Hammer, Jared H. Delcamp
Publikováno v: The Journal of organic chemistry. 87(17)
The design of shortwave infrared (SWIR) emissive small molecules with good stability in water remains an important challenge for fluorescence biological imaging applications. A series of four SWIR emissive rhodindolizine (RI) dyes were rationally des
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::88b3c82c4942672dd5b0f22de9fdb689
https://pubmed.ncbi.nlm.nih.gov/35984405
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6
Digestive ripening yields atomically precise Au nanomolecules
Autor: Amala Dass, Senthil Kumar Eswaramoorthy
Publikováno v: New Journal of Chemistry. 45:20241-20248
Digestive ripening (DR) is a synthetic method where a polydisperse colloid of metal nanoparticles upon refluxing with a free ligand in a high boiling point solvent gives monodisperse nanoparticles. Brust synthesis is known to form atomically monodisp
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fe43aabb369fe42eb30b85a370ca5b81
https://doi.org/10.1039/d1nj04042a
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Crystal Structure of Au30–xAgx(S-tBu)18 and Effect of the Ligand on Ag Alloying in Gold Nanomolecules
Autor: Amala Dass, Naga Arjun Sakthivel, Kalpani Hirunika Wijesinghe, Tanya C. Jones
Publikováno v: The Journal of Physical Chemistry Letters. 11:6312-6319
We report the X-ray crystal structure of the Au30-xAgx(S-tBu)18 alloy and the effect of the ligand on alloying site preferences. Gold-silver nanoalloys prepared by co-reduction of metal salts are known to have only partial Ag occupancies. Interesting
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::567f6c9d5c708b6ee471d417739ed230
https://doi.org/10.1021/acs.jpclett.0c01330
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Isomeric Thiolate Monolayer Protected Au92 and Au102 Nanomolecules
Autor: Amala Dass, Uzi Landman, Bokwon Yoon, Alessandro Fortunelli, Naga Arjun Sakthivel, Luca Sementa
Publikováno v: Journal of physical chemistry. C 124 (2020): 1655–1666. doi:10.1021/acs.jpcc.9b08846
info:cnr-pdr/source/autori:Sakthivel N.A.; Sementa L.; Yoon B.; Landman U.; Fortunelli A.; Dass A./titolo:Isomeric Thiolate Monolayer Protected Au92 and Au102 Nanomolecules/doi:10.1021%2Facs.jpcc.9b08846/rivista:Journal of physical chemistry. C/anno:2020/pagina_da:1655/pagina_a:1666/intervallo_pagine:1655–1666/volume:124
We report the results of a study of the isomeric thiolate monolayer capping of two gold nanocluster molecules, namely Au92 and Au102, both protected by 44 4-tert-butylbenzene thiolate (TBBT) ligands. The finding of an isomeric monolayer of the same l
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c22452f5d71afda5732e7404c88d7b2c
https://doi.org/10.1021/acs.jpcc.9b08846
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10
Plasmonic Nanomolecules: Electrochemical Resolution of 22 Electronic States in Au329(SR)84
Autor: Amala Dass, Chanaka Kumara, Milan Rambukwella, Vijay Reddy Jupally, Naga Arjun Sakthivel
Publikováno v: ACS Energy Letters. 5:207-214
Gold nanomolecules are atomically precise gold thiolate nanoparticles. They show size-dependent optical and electrochemical properties due to the quantization effects. The optical properties are we...
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0f8fdc62ce230b0777fb8c7082f9bb0e
https://doi.org/10.1021/acsenergylett.9b02528
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