The Journal of Physical Chemistry 最新文献_第5页

Air pollution disparities in the USA. 美国的空气污染差异。

IF 82.9

The Journal of Physical Chemistry Pub Date : 2022-01-27 DOI: 10.1038/d41591-022-00029-9

Karen O'Leary

引用次数: 0

A blood test to predict pre‑eclampsia. 预测先兆子痫的血液检测。

IF 82.9

The Journal of Physical Chemistry Pub Date : 2022-01-20 DOI: 10.1038/d41591-022-00027-x

Karen O'Leary

引用次数: 0

Understanding microbiome alterations in autism. 了解自闭症微生物组的改变。

IF 82.9

The Journal of Physical Chemistry Pub Date : 2022-01-20 DOI: 10.1038/d41591-022-00028-w

Karen O'Leary

引用次数: 0

CAR-T cell therapies for large B cell lymphoma. 治疗大 B 细胞淋巴瘤的 CAR-T 细胞疗法。

IF 82.9

The Journal of Physical Chemistry Pub Date : 2022-01-10 DOI: 10.1038/d41591-022-00005-3

Karen O'Leary

引用次数: 0

HIV and skin cancer risk. 艾滋病毒与皮肤癌风险。

IF 82.9

The Journal of Physical Chemistry Pub Date : 2022-01-06 DOI: 10.1038/d41591-022-00001-7

Karen O'Leary

引用次数: 0

Entropic Origin of the Attenuated Width of the Ice–Water Interface 冰水界面衰减宽度的熵源

IF 2.781

The Journal of Physical Chemistry Pub Date : 2020-03-10 DOI: 10.1021/acs.jpcc.0c02030.s001

Saumyak Mukherjee, B. Bagchi

引用次数: 0

NMR Crystallography of Aluminum Carbide: Impuritiesin the Reagent and Improved 27Al NMR Tensors 碳化铝的核磁共振晶体学:试剂中的杂质和改进的27Al核磁共振张量

IF 2.781

The Journal of Physical Chemistry Pub Date : 2020-03-05 DOI: 10.1021/acs.jpcc.9b11579.s001

R. Marti, V. Sarou-kanian, Colton M. Moran, Krista S. Walton, S. Hayes

引用次数: 0

Balanced Carrier Injection and Charge Separation of CuInS₂ Quantum Dots for Bifunctional Light-Emitting and Photodetection Devices 用于双功能发光和光探测器件的CuInS 2量子点平衡载流子注入和电荷分离

IF 2.781

The Journal of Physical Chemistry Pub Date : 2020-03-02 DOI: 10.1021/acs.jpcc.0c00723.s001

Shuai Chang, Yeling Zhao, Jialun Tang, Zelong Bai, Liangyu Zhao, Haizheng Zhong

{"title":"Balanced Carrier Injection and Charge Separation of CuInS₂ Quantum Dots for Bifunctional Light-Emitting and Photodetection Devices","authors":"Shuai Chang, Yeling Zhao, Jialun Tang, Zelong Bai, Liangyu Zhao, Haizheng Zhong","doi":"10.1021/acs.jpcc.0c00723.s001","DOIUrl":"https://doi.org/10.1021/acs.jpcc.0c00723.s001","url":null,"abstract":"The\u0000ligand exchange of 6-mercaptohexanol on the surface CuInS2 quantum dots not only improves their solution processability\u0000in alcoholic solvents such as methanol, ethanol, and N,N-dimethylformamide but also modulates their electrical\u0000band gap and thus the charge injection and extraction at the charge\u0000transport interfaces. Bifunctional light-emitting and photodetection\u0000devices based on these alcohol-soluble CuInS2 quantum dots\u0000are realized adopting an inverted structure with ZnO as the electron\u0000transport layer and poly[(9,9-dioctylfluorenyl-2,7-diyl)-alt-(4,4′-(N-(4-butylphenyl)diphenylaminel)]\u0000and poly(3,4-ethylenedioxythiophene):polystyrenesulfonate as the hole\u0000transport layers. The optimized device with selected active layer\u0000thickness exhibits red emission at 647 nm with a maximum luminance\u0000of 1600 cd/m2 under forward bias and works as a photodetector\u0000at zero bias with a maximum responsibility of 0.53 mA/W and detectivity\u0000of 2.5 × 1010 jones. Furthermore, with interface engineering\u0000of the polyethylenimine ethoxylated (PEIE) layer at the electron transport\u0000side, more balanced charge injection is achieved, leading to reducing\u0000electroluminescence roll-off effect. The insulating PEIE layer also\u0000blocks the current leakage, giving rise to reduced dark current and\u0000improved detectivity of 3.5 × 1010 jones. The effective\u0000bidirectional charge transfer achieved under simplified device design\u0000using the alcohol-soluble quantum dots brings a new candidate for\u0000multifunctional devices.","PeriodicalId":58,"journal":{"name":"The Journal of Physical Chemistry ","volume":"77 1","pages":""},"PeriodicalIF":2.781,"publicationDate":"2020-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79675086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

What Role Can Surface Capping Ligand Play To Control Dopant Emission in Semiconductor Nanoparticles 表面盖层配体在控制半导体纳米颗粒中掺杂物发射中的作用

IF 2.781

The Journal of Physical Chemistry Pub Date : 2020-02-28 DOI: 10.1021/acs.jpcc.9b11074.s001

Madhumita Bhar, Saoni Rudra, P. Mukherjee

{"title":"What Role Can Surface Capping Ligand Play To Control Dopant Emission in Semiconductor Nanoparticles","authors":"Madhumita Bhar, Saoni Rudra, P. Mukherjee","doi":"10.1021/acs.jpcc.9b11074.s001","DOIUrl":"https://doi.org/10.1021/acs.jpcc.9b11074.s001","url":null,"abstract":"The\u0000role of surface capping ligands in controlling dopant photoluminescence\u0000in semiconductor nanoparticles is examined by monitoring emission\u0000in terbium cation incorporated zinc sulfide [Zn(Tb)S] nanoparticles,\u0000as a function of [H+] that is varied postsynthetically.\u0000Increases in Tb3+ emission of ∼6 and ∼1.3\u0000times are observed on changing the pH from 4 to 7 and from 7 to 11,\u0000respectively. An increased contribution of host sensitization over\u0000direct excitation is observed under basic conditions. Subtle structural\u0000modification of the capping ligand is argued to be solely responsible\u0000for the dopant emission in the acidic–neutral range. The neutral–basic\u0000range in addition to this effect has a minor contribution from alteration\u0000in band alignment as well. A major outcome from this work relates\u0000to identifying the role of the terminally placed functional group\u0000in the capping ligand to control emissions from both the host (zinc\u0000sulfide nanoparticles) and guest (Tb3+), with a pronounced\u0000effect on dopant Tb3+ emission in the 1-thioglycerol capped\u0000Zn(Tb)S nanoparticles. These results identify surface engineering\u0000as an important modulator, in addition to the primary criteria of\u0000(a) band gap engineering and (b) breaking (or optimizing) dopant local\u0000site symmetry in maximizing (or guiding) dopant emission in doped\u0000semiconductor nanoparticles.","PeriodicalId":58,"journal":{"name":"The Journal of Physical Chemistry ","volume":"19 1","pages":""},"PeriodicalIF":2.781,"publicationDate":"2020-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80048077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Theoretical Exploration of Single-Layer Tl₂O as a Catalyst in Lithium–Oxygen Battery Cathodes 单层Tl₂O作为锂氧电池阴极催化剂的理论探索

IF 2.781

The Journal of Physical Chemistry Pub Date : 2020-01-01 DOI: 10.1021/acs.jpcc.9b09665.s001

Jia-Hui Li, Jie Wu, Yang-Xin Yu

{"title":"Theoretical Exploration of Single-Layer Tl₂O as a Catalyst in Lithium–Oxygen Battery Cathodes","authors":"Jia-Hui Li, Jie Wu, Yang-Xin Yu","doi":"10.1021/acs.jpcc.9b09665.s001","DOIUrl":"https://doi.org/10.1021/acs.jpcc.9b09665.s001","url":null,"abstract":"Two-dimensional transition-metal oxides have been widely explored as catalysts in high-capacity nonaqueous lithium–oxygen batteries due to their excellent electrochemical performance in the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), but little attention has been paid to non-transition-metal oxides. Here, we employ density functional methods based on the Perdew–Burke–Ernzerhof (PBE) functional with dispersion correction and the Heyd–Scuseria–Ernzerhof hybrid functional (HSE06) to investigate the mechanisms of the nucleation and decomposition processes of Li₄O₂(s), i.e., discharge and charge processes on single-layer Tl₂O (SL-Tl₂O) in lithium–oxygen batteries. HSE06 with the spin–orbital coupling effect is adopted to calculate the band gap of SL-Tl₂O. It is demonstrated that the spin–orbital coupling effect is significant in predictions of not only electronic but also thermodynamic properties for heavy-element compounds such as Tl₂O. The formation of LiO₂(s) is initiated by the adsorption of oxygen molecules instead of lithium atoms on the surface. The intermediate reaction products strongly interact with SL-Tl₂O, which causes an overpotential of 1.47 V during the electrochemical reaction. The electronic conductivity analysis of lithium oxides adsorbed on SL-Tl₂O demonstrates that the electronic conductance of the layer does not change during the ORR/OER. The adsorption enthalpies of five frequently used nonaqueous solvents (tetrahydrofuran, 1,2-dimethoxyethane, 1,3-dioxolane, dimethyl carbonate, and propiolic acid) on SL-Tl₂O indicate that SL-Tl₂O is stable in the electrolytes. All of these calculated results indicate that SL-Tl₂O is a feasible catalyst for the ORR/OER in nonaqueous lithium–oxygen batteries.","PeriodicalId":58,"journal":{"name":"The Journal of Physical Chemistry ","volume":"26 1","pages":""},"PeriodicalIF":2.781,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75097423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3