Evaluation of Aromatic Thiols as Photoinitiators

2020 ◽  
Vol 53 (13) ◽  
pp. 5237-5247 ◽  
Author(s):  
Dillon M. Love ◽  
Benjamin D. Fairbanks ◽  
Christopher N. Bowman
Keyword(s):  
Aromatic Thiols

S-Acylation of aliphatic and aromatic thiols with carboxylic acids and their esters over solid acid catalysts in the gas phase at temperatures above 200°C

2013 ◽  
Vol 464-465 ◽  
pp. 332-338 ◽  
Author(s):  
Sayoko Nagashima ◽  
Hitomi Yamazaki ◽  
Kentaro Kudo ◽  
Satoshi Kamiguchi ◽  
Teiji Chihara
Keyword(s):  
Gas Phase ◽  
Carboxylic Acids ◽  
Solid Acid ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Aromatic Thiols

Direct Access to S-Heterocycles by Scandium(III) Triflate Catalyzed Cyclization of Aromatic Thiols and Diols

Synlett ◽  
2021 ◽  
Author(s):  
Maki Minakawa ◽  
Keisuke Minami ◽  
Yuya Sato
Keyword(s):  
Reaction Pathway ◽  
Environmentally Friendly ◽  
Direct Access ◽  
Aromatic Thiols ◽  
Thiophene Derivatives ◽  
Environmentally Friendly Method

AbstractA simple and environmentally friendly method to prepare S-heterocycles by cyclization of aromatic thiols and diols with H2O as a byproduct is described. The Sc(OTf)3-catalyzed dehydrative cyclizations of aromatic thiols and diols provided the corresponding thiopyran and thiophene derivatives. Control experiments were also performed to obtain insights into the reaction pathway

Origins of the photoinitiation capacity of aromatic thiols as photoinitiatiors: a computational study

2021 ◽  
Author(s):  
Volkan Fındık ◽  
Basak Koca Fındık ◽  
Viktorya Aviyente ◽  
Antonio Monari
Keyword(s):  
Free Radical ◽  
Radical Polymerization ◽  
Computational Study ◽  
Photophysical Properties ◽  
Free Radical Polymerization ◽  
Aromatic Thiols

In this work, we report the photophysical properties of three thiol derivatives, commonly used as photoinitiators in thiol–ene free radical polymerization, the ultimate goal being to rationalize the main reason behind the photoinitiation efficiency.

scholarly journals Effects of Aromatic Thiol Capping Agents on the Structural and Electronic Properties of CdnTen (n = 6,8 and 9) Quantum Dots

2021 ◽  
Vol 8 ◽  
Author(s):  
Muhammad Imran ◽  
Muhammad Jawwad Saif ◽  
Tahir Farooq ◽  
Javed Iqbal
Keyword(s):  
Quantum Dots ◽  
Electronic Properties ◽  
Absorption Spectra ◽  
Capping Agents ◽  
Aromatic Thiol ◽  
Td Dft ◽  
Structural And Electronic Properties ◽  
Aromatic Thiols ◽  
Capping Ligands ◽  
Homo Lumo

Thiols are efficient capping agents used for the synthesis of semiconductor and metal nanoparticles. Commonly, long-chain thiols are used as passivating agents to provide stabilization to nanoparticles. Theoretical methods rarely reported aromatic thiol ligands’ effects on small-sized CdTe quantum dots’ structural and electronic properties. We have studied and compared the structural and electronic properties of (i) bare and (ii) aromatic thiols (thiophenol, 4-methoxybenzenethiol, 4-mercaptobenzonitrile, and 4-mercaptobenzoic acid) capped CdnTen quantum dots (QDs). Aromatic thiols are used as thiol-radical because of the higher tendency of thiol-radicals to bind with Cd atoms. This work provides an understanding of how the capping agents affect specific properties. The results show that all aromatic thiol-radical ligands caused significant structural distortion in the geometries. The aromatic thiol-radical ligands stabilize LUMOs, stabilize or destabilize HOMOs, and decrease HOMO-LUMO gaps for all the capped QDs. The stabilization of LUMOs is more pronounced than the destabilization of HOMOs. We also studied the effect of solvent on structural and electronic properties. TD-DFT calculations were performed to calculate the absorption spectra of bare and capped QDs, and all the capping ligands resulted in the redshift of absorption spectra.

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