Sulphonic acid functionalized porphyrin anchored with a <i>meso</i>-substituted triazolium ionic liquid moiety: a heterogeneous photo-catalyst for metal/base free C–C cross-coupling and C–N/C–H activation using aryl chloride under visible light irradiation
is an efficient photocatalyst for the Heck, Sonogashira, Buchwald, Ullmann/Fittig coupling and C–H activation of phenols with different aryl chlorides in the absence of a base/noble metal, using 5 W LED (yellow) light under ambient conditions. The photocatalyst with low band gap (1.55 eV) comprising conjugation, favors couplingreaction of unactivated aryl chlorides, by easy excitation of electrons
我们报告了一种简单的合成磺酸官能化卟啉的方法,该方法与内消旋的三唑鎓离子液体部分(SAFPTILM)固定,可在可见光下使用芳基氯进行金属/碱自由的C-C交叉偶联和C-N / C-H活化光照射。酸强度已经基于哈米特指示剂进行了测量。SAFPTILM光催化剂包含18个π共轭电子体系,内消旋有生色团取代基位置可以在可见光的照射下的光催化过程中提供快速的电子传导通道。研究发现,使用5 W LED(黄色)光时,SAFPTILM是在没有碱金属/贵金属的情况下,用于Heck,Sonogashira,Buchwald,Ullmann / Fittig偶联和苯酚与不同的芳基氯化物的C–H活化的有效光催化剂。在环境条件下。具有低带隙(1.55 eV)的光催化剂具有共轭作用,通过易于激发电子并转移至基于共轭苯并咪唑鎓的苯二胺载体上,有利于未活化的芳基氯的偶联反应,从而延迟了光致电子-空穴对的重组。
Production of Furfural-Diethyl-Acetal as Biofuel Additives for Gasoline by Metal Free Porphyrin Photocatalyst Under Visible Light
furfural-diethyl-acetal (FDA), using ionic liquid tangled, sulphonic acid functionalized, porphyrin (ILSAFPc) as a photocatalyst under visiblelight at ambient conditions. The formation of FDA was achieved by reacting furfural and ethanol (1: 2.2) over ILSAFPc photocatalyst in a home-made photoreactor under 5 W LED light. The product was attained with 92% yield by photocatalytic acetalization in 18 h at room temperature
该协议介绍了糠醛 (FFL) 到糠醛二乙基缩醛 (FDA) 的转化, 使用离子液体缠结、磺酸功能化、卟啉 (ILSAFPc) 作为环境条件下可见光下的光催化剂。FDA的形成是通过在自制的光反应器中,在5 W LED灯下,通过ILSAFPc光催化剂反应糠醛和乙醇(1:2.2)来实现的。产物在室温下光催化缩醛化18 h,产率92%,经1 H NMR和13 C NMR证实。通过在1中存在 CH 单线态证实了缩醛H NMR,在 (8.08) ppm 和 CHO 质子在 18 小时时底物消失。此外,FDA 展示了一种出色的燃料添加剂,结果表明,与汽油混合 15% 和 20%(按体积计)发现了可比的物理化学性质,包括辛烷值和热值。最后,ILSAFPc 在优化条件下可重复使用六次,而产量和结构没有显着变化。 图形摘要
Synthesis and characterization of a conjugated porphyrin dyad entangled with carboxyl functionalized benzimidazolium: an efficient metal free sensitizer for DSSCs
作者:Darpan V. Bhuse、Pundlik R. Bhagat
DOI:10.1039/d0nj05387b
日期:——
studies revealed that the frontier orbital energy levels make the system suitable for use as a sensitizer in conjugation with TiO2 in DSSCs. A DSSC fabricated using dyad sensitized TiO2 as an iodide tri-iodide redox couple exhibited a power conversion efficiency of 6.9%, under illumination (AM 1.5, 100 mW cm−2) with a sensitization time of 4 h without adding any efficiency booster and anti-aggregating
作为原型功能分子,卟啉是自然界中植物中最好的光合色素,它模仿了太阳能转化的原理。考虑到卟啉具有惊人的采光能力,我们提出了一种新型共轭内消旋体的逐步合成方法取代的卟啉二单元与羧基官能化的苯并咪唑鎓部分(CPDCFBM)缠结在一起,作为敏化剂用于染料敏化太阳能电池(DSSC)。用苯并咪唑部分官能化的1,4-二(4-酰胺基苯乙烯)苯用作两个取代卟啉部分之间的间隔基。使用诸如傅立叶变换红外光谱,紫外可见吸收光谱,核磁共振光谱,热重分析,BET表面积分析,循环伏安法(CV)研究和电化学阻抗谱(EIS)之类的分析技术对二元组进行表征。发现使用UV-可见光谱法测量的带隙为1.42eV。DSSC中为2。在没有添加任何效率增强剂的情况下,在光敏条件下(AM 1.5,100 mW cm -2),用二元敏化的TiO 2作为碘化物三碘化物氧化还原对制备的DSSC的功率转换效率为6.9%,敏化时间为4 h。抗聚集剂
Design, synthesis and evaluation of new classes of nonquaternary reactivators for acetylcholinesterase inhibited by organophosphates
for reactivation of both nerve agents and pesticides inhibited hAChE were described in this paper. It was found that substituted salicylaldehydes conjugated to aminobenzamide through piperidine would produce efficient reactivators for sarin, VX and tabun inhibited hAChE, such as L6M1R3, L6M1R5 to L6M1R7, L4M1R3 and L4M1R5 to L4M1R7. The in vitro reactivation experiment for pesticides inhibited hAChE
Efficient and Reusable Benzimidazole Based Sulphonic Acid Functionalized Porphyrin Photocatalyst for C–N Bond Formation Under Visible Light Irradiation
reaction. In this present work, we have designed and synthesised a benzimidazole-based sulphonic acid functionalized porphyrin photocatalyst (BSAFPPc) and confirmed by analytical techniques such as FT-NMR, FT-IR, and SEM/EDX. The BSAFPPc demonstrated an optical energy gap of 1.12 eV by using DRS. Further, the acidic potential was scrutinized by the Hammett acidity function which is H0 = 0.99. The BSAFPPc