Synthesis of a disulfide functionalized diacetylenic derivative of carbazole as building-block of polymerizable self-assembled monolayers

2014 ◽  
Vol 68 (2) ◽  
Author(s):  
Sushilkumar Jadhav ◽  
Massimo Maccagno
Keyword(s):  
Building Block ◽  
Metallic Nanostructures ◽  
Self Assembled Monolayers ◽  
Sodium Hydrosulfide ◽  
Synthetic Pathway ◽  
Assembled Monolayers ◽  
Self Assembled ◽  
End Group ◽  
Symmetrical Disulfide ◽  
Made In

AbstractA new symmetrical disulfide containing a diacetylenic unit and bearing a fluorescent carbazolyl end-group forming polymerizable self-assembled monolayers on metallic nanostructures has been synthesized. Suitable modifications of the synthetic steps involved in the synthesis of such derivatives were made in order to assure better synthetic pathway. Conversion of the tosylated derivative into the final symmetrical disulfide is carried out using sodium hydrosulfide (NaSH).

Electrical properties of end-group functionalised Self-Assembled Monolayers

1997 ◽  
Vol 36 (1-4) ◽  
pp. 119-122 ◽  
Author(s):  
J. Collet ◽  
M. Bonnier ◽  
O. Bouloussa ◽  
F. Rondelez ◽  
D. Vuillaume
Keyword(s):  
Electrical Properties ◽  
Self Assembled Monolayers ◽  
Assembled Monolayers ◽  
Self Assembled ◽  
End Group

scholarly journals Fluorination as a route towards unlocking the hydrogen bond donor ability of phenolic compounds in self-assembled monolayers

CrystEngComm ◽  
2020 ◽  
Vol 22 (14) ◽  
pp. 2425-2428
Author(s):  
Harry Pinfold ◽  
Graham Pattison ◽  
Giovanni Costantini
Keyword(s):  
Hydrogen Bond ◽  
Phenolic Compounds ◽  
Building Block ◽  
Self Assembled Monolayers ◽  
Hydrogen Bond Donor ◽  
Assembled Monolayers ◽  
Donor Ability ◽  
Self Assembled ◽  
Effective Hydrogen

Fluorination turns a prototypical diphenol into an effective hydrogen-bond-donating building block for the formation of 2D phenol–pyridine cocrystals.

Low-voltage graphene transistors based on self-assembled monolayer nanodielectrics

2012 ◽  
Vol 1451 ◽  
pp. 179-184
Author(s):  
Cecilia Mattevi ◽  
Florian Colléaux ◽  
Hokwon Kim ◽  
Manish Chhowalla ◽  
Thomas D. Anthopoulos
Keyword(s):  
Low Voltage ◽  
Chemical Vapour ◽  
Self Assembled Monolayers ◽  
Operating Voltage ◽  
Self Assembled Monolayer ◽  
Bias Stress ◽  
Operating Stability ◽  
Assembled Monolayers ◽  
Self Assembled ◽  
End Group

ABSTRACTWe demonstrate low operating voltage (<|1.5| V) chemical vapour deposited (CVD) graphene transistors using solution processable organic self-assembled monolayers (SAMs) as nanodielectrics. The transistors show weak extrinsic doping, hysteresis-free operation, low gate-leakage current and good operating stability with bias-stress free characteristics. Most importantly we demonstrate that the Dirac potential can be finely tuned by modifying the molecular end-group of the SAMs without compromising the electrical characteristics of the transistors.

End-Group-Dominated Molecular Order in Self-Assembled Monolayers

1995 ◽  
Vol 99 (18) ◽  
pp. 7102-7107 ◽  
Author(s):  
H. Wolf ◽  
H. Ringsdorf ◽  
E. Delamarche ◽  
T. Takami ◽  
H. Kang ◽  
...  
Keyword(s):  
Self Assembled Monolayers ◽  
Molecular Order ◽  
Assembled Monolayers ◽  
Self Assembled ◽  
End Group

Physical Characterization and Electrical Transport in End-Group Functionalized Self-Assembled Monolayers

1997 ◽  
Vol 488 ◽  
Author(s):  
J. Collet ◽  
D. Vuillaume ◽  
M. Bonnier ◽  
O. Bouloussa ◽  
F. Rondelez ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Electrical Transport ◽  
Native Oxide ◽  
Self Assembled Monolayers ◽  
Self Assembled Monolayer ◽  
Alkyl Chains ◽  
Covalently Bonded ◽  
Assembled Monolayers ◽  
Self Assembled ◽  
End Group

AbstractWe have previously demonstrated that a self-assembled monolayer (SAM) of alkyltrichlorosilane molecules, covalently bonded to the native oxide of a silicon substrate, allows the fabrication of MIS (Metal-Insulator-Semiconductor) devices with excellent electrical properties [1]. Here we demonstrate that we can functionalize, with π-electron moieties, the end-groups of the molecules, once grafted to the substrate, without disturbing the low conductivity through the SAM (σ⊥), while strongly increasing the in-plane conductivity (σ//). The functionalization of the monolayer is monitored by FTIR, ellipsometry and X ray reflectivity. Conductivity, photoconductivity and capacitance measurements are carried out to study the effect of these chemical functionalizations on the electrical properties of the monolayers. We demonstrate that the low perpendicular conductivity (σ⊥≈10−15 S/cm) is not altered by the end-group functionalities while high anisotropic conductivities (σ///σ⊥ ≈ 107-108) are obtained at a monolayer level. Interfacial (Si/SAM and SAM/metal) energy barriers are investigated as a function of the end-group functionalities. We also show that conducting monomers substituted by alkyl chains (3,6- dibromocarbazole-N-octyltrimethoxysilane), directly grafted to the substrate, exhibit similar behavior.

One Building Block, Two Different Nanoporous Self-Assembled Monolayers: A Combined STM and Monte Carlo Study

ACS Nano ◽  
2011 ◽  
Vol 6 (1) ◽  
pp. 897-903 ◽  
Author(s):  
Jinne Adisoejoso ◽  
Kazukuni Tahara ◽  
Shengbin Lei ◽  
Paweł Szabelski ◽  
Wojciech Rżysko ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Building Block ◽  
Monte Carlo Study ◽  
Self Assembled Monolayers ◽  
Assembled Monolayers ◽  
Self Assembled
Sign in / Sign up

Export Citation Format

Share Document