The Influence of Surface Proximity on Photoswitching Activity of Stilbene-Functionalized N-Heterocyclic Carbene Monolayers

2021 ◽  
Author(s):  
Shahar Dery ◽  
Israel Alshanski ◽  
Evgeniy Mervinetsky ◽  
Daniel Feferman ◽  
Shlomo Yitzchaik ◽  
...  
Keyword(s):  
Self Assembly ◽  
Crucial Role ◽  
Functional Materials ◽  
Adsorption Geometry ◽  
Surface Proximity

Self-assembly of photo-responsive molecules is a robust technology for reversibly tuning the properties of functional materials. Herein, we probed the crucial role of surface-adsorbate interactions on the adsorption geometry of...

scholarly journals Using Photoactive N-Heterocyclic Carbenes Monolayers to Identify the Influence of Surface Proximity on Photoswitching Activity

2020 ◽  
Author(s):  
Shahar Dery ◽  
Israel Alshanski ◽  
Evgeniy Mervinetsky ◽  
Daniel Feferman ◽  
Shlomo Yitzchaik ◽  
...  
Keyword(s):  
Surface Potential ◽  
Self Assembly ◽  
Functional Materials ◽  
Imidazole Ring ◽  
Structural Flexibility ◽  
Vertical Orientation ◽  
Order Of Magnitude ◽  
Adsorption Geometry ◽  
Photoinduced Changes ◽  
The Impact

<p>Self-assembly of photoresponsive molecules is a robust technology for reversibly tuning the chemical and electronic properties of functional materials. In most systems the photoactive group is separated from the surface by a spacer and thus the photo-responsiveness does not benefit from interactions with the metal. Herein, the impact of metal photoactive-group interactions on photoswitchability and surface potential were probed by self-assembly of N-heterocyclic carbene molecules (NHCs) that were functionalized with stilbene group directly on their imidazole ring. Stilbene-NHCs that were adsorbed on weakly interacting Au surface accumulated a vertical orientation, as identified by FTIR measurements. This positioning enabled structural flexibility and high photoisomerization efficiency that induced reversible changes in surface potential. Stilbene-NHCs that were anchored on Pt film accumulated flat-lying adsorption geometry due to strong metal-adsorbate interactions. These interactions limited the structural flexibility of the stilbene groups and induced deteriorated photoswitchability that led to lower photoinduced changes in surface potential. While stronger metal-adsorbate interactions hindered the photo-induced isomerization yield of stilbene, these interactions prompted the <i>cis</i>-to-<i>trans</i> thermal-induced isomerization rate, which was an order of magnitude higher on Pt than on Au. </p>

scholarly journals Self-assembly of endohedral metallofullerenes: a decisive role of cooling gas and metal–carbon bonding

Nanoscale ◽  
2016 ◽  
Vol 8 (6) ◽  
pp. 3796-3808 ◽  
Author(s):  
Qingming Deng ◽  
Thomas Heine ◽  
Stephan Irle ◽  
Alexey A. Popov
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulations ◽  
Formation Mechanism ◽  
Self Assembly ◽  
Crucial Role ◽  
Decisive Role ◽  
Endohedral Metallofullerenes ◽  
Dynamics Simulations ◽  
Carbon Bonding

Molecular dynamics simulations of the endohedral metallofullerene formation reveal a crucial role of the cooling gas (He) and the strength of metal–carbon bonding in the formation mechanism.

The crucial role of self-assembly in nonlinear optical properties of polymeric composites based on crown-substituted ruthenium phthalocyaninate

2015 ◽  
Vol 3 (26) ◽  
pp. 6692-6700 ◽  
Author(s):  
Yulia G. Gorbunova ◽  
Antonina D. Grishina ◽  
Alexander G. Martynov ◽  
Tatiyana V. Krivenko ◽  
Alexandra A. Isakova ◽  
...  
Keyword(s):  
Thin Film ◽  
Optical Properties ◽  
Single Crystal ◽  
Self Assembly ◽  
Crucial Role ◽  
Nonlinear Optical ◽  
Polymeric Composites ◽  
Self Assembling ◽  
Optical Behavior

Single-crystal, thin film and polymeric composites of [(15C5)4Pc]Ru(pyz) with polyvinylcarbazole were studied and crucial role of self-assembling in their nonlinear optical behavior was revealed.

scholarly journals Using Photoactive N-Heterocyclic Carbenes Monolayers to Identify the Influence of Surface Proximity on Photoswitching Activity

2020 ◽  
Author(s):  
Shahar Dery ◽  
Israel Alshanski ◽  
Evgeniy Mervinetsky ◽  
Daniel Feferman ◽  
Shlomo Yitzchaik ◽  
...  
Keyword(s):  
Surface Potential ◽  
Self Assembly ◽  
Functional Materials ◽  
Imidazole Ring ◽  
Structural Flexibility ◽  
Vertical Orientation ◽  
Order Of Magnitude ◽  
Adsorption Geometry ◽  
Photoinduced Changes ◽  
The Impact

<p>Self-assembly of photoresponsive molecules is a robust technology for reversibly tuning the chemical and electronic properties of functional materials. In most systems the photoactive group is separated from the surface by a spacer and thus the photo-responsiveness does not benefit from interactions with the metal. Herein, the impact of metal photoactive-group interactions on photoswitchability and surface potential were probed by self-assembly of N-heterocyclic carbene molecules (NHCs) that were functionalized with stilbene group directly on their imidazole ring. Stilbene-NHCs that were adsorbed on weakly interacting Au surface accumulated a vertical orientation, as identified by FTIR measurements. This positioning enabled structural flexibility and high photoisomerization efficiency that induced reversible changes in surface potential. Stilbene-NHCs that were anchored on Pt film accumulated flat-lying adsorption geometry due to strong metal-adsorbate interactions. These interactions limited the structural flexibility of the stilbene groups and induced deteriorated photoswitchability that led to lower photoinduced changes in surface potential. While stronger metal-adsorbate interactions hindered the photo-induced isomerization yield of stilbene, these interactions prompted the <i>cis</i>-to-<i>trans</i> thermal-induced isomerization rate, which was an order of magnitude higher on Pt than on Au. </p>

scholarly journals Hybrid hydrogels derived from renewable resources as a smart stimuli responsive soft material for drug delivery applications

RSC Advances ◽  
2022 ◽  
Vol 12 (4) ◽  
pp. 2009-2018
Author(s):  
Vandana Singh ◽  
Yadavali Siva Prasad ◽  
Arun Kumar Rachamalla ◽  
Vara Prasad Rebaka ◽  
Tohira Banoo ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Renewable Resources ◽  
Self Assembly ◽  
Crucial Role ◽  
Functional Materials ◽  
Soft Material ◽  
Stimuli Responsive ◽  
Design And Synthesis ◽  
Amphiphilic Molecules ◽  
Hybrid Hydrogels

The design and synthesis of amphiphilic molecules play a crucial role in fabricating smart functional materials via self-assembly.

Epitaxial YBa2Cu3O7-8 films : Crucial role of growth-induced linear defects in microwave properties

2001 ◽  
Vol 11 (PR11) ◽  
pp. Pr11-47-Pr11-52
Author(s):  
V. M. Pan ◽  
V. S. Flis ◽  
V. A. Komashko ◽  
O. G. Plys ◽  
C. G. Tretiatchenko ◽  
...  
Keyword(s):  
Crucial Role ◽  
Microwave Properties ◽  
Linear Defects

ANALISIS YURIDIS PUTUSAN PENGADILAN NEGERI BLORA TENTANG DUALISME KEPENGURUSAN YAYASAN PENDIDIKAN ISLAM KARTAYUDA YANG AKTA PENDIRIANNYA DIBUAT OLEH DAN DIHADAPAN NOTARIS (Studi Kasus Putusan Perkara PN Blora No. 34/Pdt.G/2015/PN.Bla)

Jurnal Akta ◽  
2017 ◽  
Vol 4 (3) ◽  
pp. 463
Author(s):  
Muslim Ansori ◽  
Akhmad Khisni
Keyword(s):  
Private Schools ◽  
Education System ◽  
Crucial Role ◽  
The State ◽  
Educational Institutions ◽  
Legal Entity ◽  
Non Profit ◽  
The Right

With the enactment of the Education System Act no 20 of 2003 (better known as the Sisdiknas Act), the State has determined that educational institutions should have a legal umbrella in the form of a legal entity, or better known as the Legal Entity Education. As a non-profit organization, the Foundation is the right legal entity that becomes a place for educational institutions, especially private schools. Therefore, of course, Notary has a very crucial role in making notary deed in the form of establishment and deed of change, such as example how in making the right basic budget and not multi interpresatasi for stake holders in the foundation. Therefore, the role of function and authority of the organ of the foundation must be clearly stated in the articles of association, so as not to cause a dispute in the future.KEYWORDS: Notaries, Foundation, Organ Foundation,

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