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Intriguing Indium-salen Complexes as Multicolor Luminophores
Lee, Seon Hee,Shin, Nara,Kwak, Sang Woo,Hyun, Kyunglim,Woo, Won Hee,Lee, Ji Hye,Hwang, Hyonseok,Kim, Min,Lee, Junseong,Kim, Youngjo,Lee, Kang Mun,Park, Myung Hwan American Chemical Society 2017 Inorganic Chemistry Vol.56 No.5
<P>The series of novel salen-based indium complexes (3-Bu-t-S-R-salen)In-Me (3-Bu-t-S-R-salen = N,N'-bis(2-oxy-3-tert-butyl-S-R-salicylidene)-1,2-diarninoethane, R = H (1), Bu-t (2), Br (3), Ph (4), OMe (5), NMe2 (6)) and [(3-Bu-t-5-NMe3-salen)In-Me] (OTO)(2) (7; OTf = CF3SO3-) have been synthesized and fully characterized by NMR spectroscopy and elemental analysis. All indium complexes 1-7 are highly stable in air and even aqueous solutions. The solid-state structures for 3-5, which were confirmed by single-crystal X-ray analysis, exhibit square-pyramidal geometries around the indium center. Both the UV/vis absorption and PL spectra of 1-7 exhibit significant intramolecular charge transfer (ICT) transitions based on the salen moieties with systematically bathochromic shifts, which depend on the introduction of various kinds of substituents. Consequently, the emission spectra of these complexes cover almost the entire-visible region lambda(em)= 455-622 run).</P>
( Nara Lee ),( Eun Ji Lee ),( Maria Lee ),( Hee Seung Kim ),( Hyun Hoon Chung ),( Jae Weon Kim ),( Noh Hyun Park ),( Yong Sang Song ) 대한산부인과학회 2018 대한산부인과학회 학술대회 Vol.104 No.-
Objective: To evaluate the effect of cyclooxygenase-2 (COX-2) inhibitor for decreasing pain after single-port laparoscopic surgery for benign gynecologic diseases. Methods: We performed a randomized, double-blind, placebo-controlled trial between October 2017 and April 2018, where all patients with benign gynecologic diseases were randomized before surgery into the following two groups: group 1 including patients treated with celecoxib 400 mg; group 2 including those treated with placebo. Only one gynecologist performed single-port laparoscopic surgery for all patients to correct the development of pain related with surgical techniques, and all patients received patient-controlled analgesia (PCA) after surgery. Then, we evaluated the visual analog scale (VAS) every six hours, and the numbers of intravenous ketorolac used as a rescue drug till two days after surgery. Results: A total of 70 patients were enrolled in this trial. The clinic-pathologic characteristics were not different between the two groups. There were no significant differences in rescue intravenous ketorolac dose; group 1 0.52 ± 0.949 vs. group 2 0.71 ± 1.101, p = 0.13 However, group 1 showed a lower VAS than group 2 at 18 (2.00 ± 1.11 vs. 2.87 ± 1.39, p = 0.03) and 24 hours (2.32 ± 1.59 vs. 2.96 ± 1.27, p = 0.048) after surgery that took 30 minutes and more. Moreover, group 1 also demonstrated a lower VAS than group 2 at 18 (1.60 ± 0.97 vs. 3.14 ± 1.56, p = 0.004) and 24 hours (1.90 ± 0.88 vs. 3.06 ± 1.12, p = 0.02) after surgery that took 60 minutes and more. Conclusion: Cox-2 inhibitor may reduce pain after single-port laparoscopic surgery for benign gynecologic diseases. It may also decrease the number of additional drugs for controlling pain despite PCA after surgery.
Lee, Young-Min,Lee, Dae-Sub,Chang, Seok-Jun,Heo, Jeong-Eun,Lee, Hee-Won,Hwang, Narae,Park, Byeong-Gon,Lee, Ho-Gyu American Astronomical Society 2016 The Astrophysical journal Vol.833 No.1
<P>Symbiotic stars are regarded as wide binary systems consisting of a hot white dwarf and a mass losing giant. They exhibit unique spectral features at 6825 and 7082 angstrom, which are formed via Raman scattering of O VI lambda lambda 1032 and 1038 with atomic hydrogen. We adopt a Monte Carlo technique to generate the same number of O VI lambda 1032 and lambda 1038 line photons and compute the flux ratioF(6825)/F(7082) of these Raman scattered O VI features formed in neutral regions with a simple geometric shape as a function of H I column density N-H I. In cylindrical and spherical neutral regions with the O VI source embedded inside, the flux ratioF(6825)/F(7082) shows an overall decrease from 3 to 1 as N-H I increases in the range 10(22-24) cm(-2). In cases of slab geometry and other geometries with the O VI source outside the H I region, Rayleigh escape operates to lower the flux ratio considerably. For moderate values of N-H I similar to 10(23) cm(-2) the flux ratio behaves in a complicated way to exhibit a broad bump with a peak value of 3.5 in the case of a sphere geometry. We find that the ratio of Raman conversion efficiencies of O VI lambda lambda 1032, 1038 ranges from 0.8 to 3.5. Our high resolution spectra of ' D' type HM Sge and 'S' type AG. Dra obtained with the Canada-France-Hawaii Telescope show that the flux ratioF(6825)/F(7082) of AG. Dra is significantly smaller than that of HM Sge, implying that 'S' type symbiotics are characterized by higher N-H I than ' D' type symbiotics.</P>