photoinduced strategy for the borylation of aryl sulfonium salts using bis(pinacolato)diboron as the boron source. This method exploits redox-neutral aryl sulfoniums to gain access to aryl radicals via C-S bond activation upon photoexcitation under transition-metal-free conditions. Therefore, it grants access to diverse arylboronate esters with good performance from easily available aryl sulfoniums accompanied
Engineering Multifunctionality in Hybrid Polyoxometalates: Aromatic Sulfonium Octamolybdates as Excellent Photochromic Materials and Self-Separating Catalysts for Epoxidation
作者:Ashwani Kumar、Abhishek Kumar Gupta、Manisha Devi、Kenneth E. Gonsalves、Chullikkattil P. Pradeep
DOI:10.1021/acs.inorgchem.7b01143
日期:2017.9.5
analyses. Hybrids 1–6 acted as good solid-state photochromic materials exhibiting color change from white to purple under UV illumination (350 nm), and we show here that the photochromicproperties of hybrids 1–6 could be modulated by changing the substitutions on the counterion motif. A coloration kinetic half-life (t1/2) of 0.33 min was achieved with this class of hybrid POMs. Hybrids 1–6 exhibited
杂化多金属氧酸盐(混合POM)中的工程多功能性是一个有趣但很少探索的话题。在本文中,我们通过调节抗衡离子基序,在杂化POM中着手工程化了两个重要的材料特性,即光致变色和自分离催化。在芳香族counter抗衡离子基序的基础上开发了一系列六个芳香族counter抗衡离子,该基序允许通过在多个位置改变取代基来进行结构和电子微调。使用芳香族锍的反离子和钼酸钠,六个新的芳香族锍八钼酸铵杂种(1 - 6),其具有式(HPDS)4 [沫8 ø 26 ](1),(HMPDS)4[Mo 8 O 26 ](2),(MPDS)4 [Mo 8 O 26 ](3),(APDS)4 [Mo 8 O 26 ](4),(AMPDS)4 [Mo 8 O 26 ](5)和(MAPDS)4 [Mo 8 O 26 ](6)(其中HPDS =(4-羟基苯基)二甲基s,HMPDS =(4-羟基-2-甲基苯基)二甲基s,MPDS =(4-甲氧基苯基)二甲基s,APDS
Photoresist composition for deep ultraviolet lithography comprising a mixture of photoactive compounds
申请人:——
公开号:US20030235782A1
公开(公告)日:2003-12-25
The present invention relates to a novel photoresist composition that can be developed with an aqueous alkaline solution, and is capable of being imaged at exposure wavelengths in the deep ultraviolet. The invention also relates to a process for imaging the novel photoresist as well as novel photoacid generators.
Palladium-Catalyzed Cyanation of Aryl Sulfonium Salts
作者:Mengna Liu、Benqiang Cui、Chuntao Zhong、Yanhui Shi、Yanfeng Dang、Changsheng Cao
DOI:10.1021/acs.orglett.3c00829
日期:2023.6.9
dimethylsulfonium salts using cheap, nontoxic, and bench-stable K4[Fe(CN)6]·3H2O as the cyanating reagent has been developed. The reactions proceeded well under base-free conditions with various sulfonium salts and provided aryl nitrile with yields of up to 92%. Aryl sulfides can be transformed to aryl nitriles directly via a one-pot process, and the protocol is scalable. Density functional theory calculations
使用廉价、无毒且实验室稳定的 K 4 [Fe(CN) 6 ]·3H 2 O 作为氰化试剂,开发了钯催化的芳基二甲基锍盐氰化反应。该反应在无碱条件下使用各种硫鎓盐进行得很好,并以高达 92% 的产率提供芳基腈。芳基硫化物可以通过一锅法直接转化为芳基腈,并且该协议是可扩展的。进行密度泛函理论计算以研究涉及氧化加成、配体交换、还原消除和再生以产生产物的催化循环的反应机理。
Mixed Organic Counterion Strategy Modulates the Self-Assembly of Polyoxometalate Hybrids into Toroids and Affects Their Photochromic and Photocatalytic Properties
作者:Aranya Kar、Chullikkattil P. Pradeep
DOI:10.1021/acs.inorgchem.2c03395
日期:2022.12.19
differences in the self-assembly properties of these hybrids has been proposed based on the differences in the H-bonding interactions of the two counterions with the dispersion medium. The HPDS and FPDS counterions exhibited different HOMO–LUMO gaps, and their varying percentages in hybrids 1–5 led to differences in optical band gaps and photochromic activities. Hybrid 2 showed the lowest band gap value