Optical rotation was recorded on a JASCO P-2100 polarimeter. NMR spectra were recorded on an Agilent Varian VNS500 spectrometer. Chemical shifts (ppm) were referenced to residual solvent peaks (δH 3.31 and δC 49.0 for CD3OD). Positive-mode ESITOFMS was obtained on a JEOL JMS-T100LP AccuTOF LC-plus 4G spectrometer using a sample dissolved in MeOH.
P 2100 polarimeter
Manufactured by Jasco
Sourced in Japan
The P-2100 polarimeter is an optical instrument designed to measure the angle of rotation of the plane of polarization of light passing through a sample. It is used for the determination of the specific rotation of optically active compounds.
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Lab products found in correlation
Varian vns500 spectrometer, by Agilent Technologies (2 mentions)
Jms t100lp accutof lc plus 4g spectrometer, by JEOL (2 mentions)
Ir affinity 1 spectrometer, by Shimadzu (1 mentions)
Arvo mx 1420 multilabel counter, by PerkinElmer (1 mentions)
J 725 spectropolarimeter, by Jasco (1 mentions)
Quattro premier xe, by Waters Corporation (1 mentions)
Uv 1280 spectrophotometer, by Shimadzu (1 mentions)
Lcms it tof spectrometer, by Shimadzu (1 mentions)
Rint 2500, by Rigaku (1 mentions)
4 protocols using p 2100 polarimeter
1
Spectroscopic characterization of compound
2
Spectroscopic Characterization of Chemical Compounds
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Optical rotation was recorded on a JASCO P-2100 polarimeter (Jasco Co., Tokyo, Japan). UV spectrum was recorded on a Shimadzu UV-1280 spectrophotometer (Shimadzu Co., Kyoto, Japan). ECD spectrum was recorded on a JASCO J-725 spectropolarimeter. IR spectrum was recorded on a Shimadzu IR affinity-1 spectrometer. NMR spectra were recorded on an Agilent Varian VNS500 spectrometer (Agilent Technologies, Santa Clara, CA, USA). Chemical shifts (ppm) were referenced to the residual solvent peaks (δH 3.31 and δC 49.0 for CD3OD). Negative-mode ESITOFMS was obtained on a JEOL JMS-T100LP AccuTOF LC-plus 4 G spectrometer using a sample dissolved in MeOH (Jeol Ltd., Tokyo, Japan). For LC-MS/MS analysis, Quattro Premier XE (Waters Co., Milford, MA, USA) system was used. Optical densities were measured using a microplate reader (ARVO MX 1420 multilabel counter, Perkin Elmer).
3
Spectroscopic Characterization of Compounds
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Optical
rotations were measured on a JASCO P2100 polarimeter (Japan). Mass
spectral data were carried out on a SHIMADZU LCMS-IT-TOF spectrometer.
The NMR experiments for all of the isolated compounds were done using
a Bruker AscendTM 400/R NMR spectrometer with the following frequencies: 1H NMR (400 MHz) and 13C NMR (100 MHz). Deuterated
methanol (CD3OD) was selected as the solvent of choice
for the NMR experiments with TMS as internal standard, and chemical
shifts were detected in δ ppm values.
rotations were measured on a JASCO P2100 polarimeter (Japan). Mass
spectral data were carried out on a SHIMADZU LCMS-IT-TOF spectrometer.
The NMR experiments for all of the isolated compounds were done using
a Bruker AscendTM 400/R NMR spectrometer with the following frequencies: 1H NMR (400 MHz) and 13C NMR (100 MHz). Deuterated
methanol (CD3OD) was selected as the solvent of choice
for the NMR experiments with TMS as internal standard, and chemical
shifts were detected in δ ppm values.
4
Polymer Characterization by GPC and DSC
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The weight- and number-average molecular weights (Mw and Mn, respectively) of the polymers were evaluated in chloroform at 40 °C using a Tosoh (Tokyo, Japan) gel permeation chromatography system with two TSK gel columns (GMHXL) and polystyrene standards. Therefore, the Mw and Mn values are given relative to polystyrene. The specific optical rotation ([α]25589) of the polymers was measured in chloroform at a concentration of 1 g dL−1 and 25 °C using a JASCO (Tokyo, Japan) P-2100 polarimeter at a wave length of 589 nm. The glass transition, cold crystallization, and melting temperatures (Tg, Tcc, and Tm, respectively) and the enthalpies of cold crystallization and melting (ΔHcc and ΔHm, respectively) were determined with a Shimadzu (Kyoto, Japan) DSC-50 differential scanning calorimeter under a nitrogen gas flow at a rate of 50 mL min−1. The samples (ca. 3 mg) were heated from 0 to 250 °C at a rate of 10 °C min−1. Wide-angle X-ray diffractometry was carried out at 25 °C using a RINT-2500 (Rigaku Co., Tokyo, Japan) equipped with a Cu-Kα source [wave length (λ) = 1.5418 Å]. Molecular characteristics of the polymers used in the present study are shown in Table 2 .
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