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Physical Properties of Individual Groundwater Chemicals
Published in John H. Montgomery, Thomas Roy Crompton, Environmental Chemicals Desk Reference, 2017
John H. Montgomery, Thomas Roy Crompton
Biological. A bacterial culture isolated from the Oconee River in North Georgia degraded 3-nitroaniline to the intermediate 4-nitrocatechol (Paris and Wolfe, 1987). A Pseudomonas sp. strain P6, isolated from a Matapeake silt loam, did not grow on 3-nitroaniline as the sole source of carbon. However, in the presence of 4-nitroaniline, all of the applied 3-nitroaniline metabolized completely to carbon dioxide (Zeyer and Kearney, 1983). In the presence of suspended natural populations from unpolluted aquatic systems, the second-order microbial transformation rate constant determined in the laboratory was reported to be 4.6 ± 0.1 × 10−13 L/organism ⋅ h (Steen, 1991).
Designing spiro-bifluorene core-based promising molecules with enhanced optoelectronic attributes for high efficiency solar cell devices
Published in Molecular Physics, 2023
Fatiqa Zafar, Riaz Hussain, Muhammad Adnan, Asifa Rani, Jongchul Lim, Waseeq-Ul-Islam Zafar, Javed Iqbal, Mahrzadi Noureen Shahi
Among all the investigated molecules, the maximum Egap was noted for R (Table 3) which is probably because of its weak electron capturing the impact of the end-capped group (4-methoxy-N-(4-methoxyphenyl)-N-methyl aniline) in contrast to the more substantial electron capturing ability of end-capped groups of designed molecules. Among the designed molecules (X1-X8), the smallest Egap value (2.66 eV) was observed for the X3 molecule, which illustrated better efficiency of E3 moiety (4-methoxy-N-(4-methoxyphenyl)-N-methyl-3-nitroaniline) where the nitro group was present at meta position along with end-capped component of R. The nitro group at meta position is inductively electron-withdrawing; therefore, it showed smaller energy gap than E4 acceptor moiety (4-methoxy-N-(4-methoxyphenyl)-N-methyl-2-nitroaniline) where the electron-withdrawing nitro group was located at the ortho side.
Ultrasonic assisted synthesis of Zn(II) 2D coordination polymer and 4-nitroaniline photoluminescence sensing manifestation through DFT studies
Published in Journal of Coordination Chemistry, 2022
Madiha Riasat, Shahzad Sharif, Shazia Khurshid, Sidra Farid, Rehana Bano, Mazhar Amjad Gilani, Onur Şahin, Fouzia Perveen
In the current study, fluorescence response of 1 was gauged against the members of nitroaromatic explosives family such as nitrobenzene, 2-nitroaniline, 3-nitroaniline 4-nitroaniline, 4-nitrophenol, 4-nitrotoluene and picric acid. Findings revealed that all the analytes decreased the luminescence intensity of 1, hence supported the quenching mechanism. The extent of quenching was quantitatively calculated in terms of quenching efficiency (%) by applying equation 1. Quenching efficiency gave insight to the sensitivity and selectivity of 1 against the analytes. Among the analytes, 4-nitroaniline was found to be the best quencher with percentage quenching efficiency of 98.9% (Figure 3), while a fluorescence spectrum showing gradual decrease in intensity is shown in Figure 4.