Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Hee Cheong Lee"'
Publikováno v:
Polymer Journal. 36:219-225
A hyperbranched polymer (HBP) was prepared by the condensation polymerization of 4-hydroxymethylphenyldiphenylamine (TPA–CH2OH) and was compared with the corresponding linear polymer (LP) prepared by condensation polymerization of 4-methyltriphenyl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16ef1f51a1c88c44c762e94e64877657
https://doi.org/10.1295/polymj.36.219
https://doi.org/10.1295/polymj.36.219
Autor:
Keiko Washino, Hee Cheong Lee, Tomomi Yokozumi, Kenji Ogion, Hisaya Sato, Seong-Ho Kim, Hiroaki Usui
Publikováno v:
Synthetic Metals. 139:151-154
Semiconducting nanocomposite was prepared from tetraphenylbenzidine (TPD) and titanium oxide using polycarbonate as a binder. Titanium oxide was prepared by sol–gel process in the presence of binder and TPD. The conductance of the composite reached
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d7c202270d7e409cbd45548ede1e401
https://doi.org/10.1016/s0379-6779(03)00105-x
https://doi.org/10.1016/s0379-6779(03)00105-x
Preparation and characterization of poly(4-alkyltriphenylamine) by chemical oxidative polymerization
Publikováno v:
Synthetic Metals. 129:123-128
High molecular weight poly(4-alkyltriphenylamine) was synthesized by chemical oxidation polymerization. 13 C NMR spectra of the obtained polymers revealed that coupling reaction occurred exclusively at the para -position of unsubstituted N -phenyl ri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1108b96cb782ac8d2cf07a5bf948b83
https://doi.org/10.1016/s0379-6779(02)00010-3
https://doi.org/10.1016/s0379-6779(02)00010-3
Autor:
Hee Cheong Lee, Alexei A. Gorbunov, Donghyun Cho, Wonmok Lee, Jacques Roovers, Hyunjung Lee, Taihyun Chang
Publikováno v:
Macromolecules. 35:529-538
Chromatographic retention of linear and ring polystyrene was investigated near the chromatographic critical condition. Reversed phase silica columns of four different pore sizes were employed to examine the pore size dependence. Adjusting the column
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8cc331e91344f735e438a4d5e9a77fa8
https://doi.org/10.1021/ma0109222
https://doi.org/10.1021/ma0109222
Publikováno v:
Macromolecular Chemistry and Physics. 201:320-325
Temperature gradient interaction chromatography (TGIC) analysis of polyisoprene (PI) is reported. PI can be fractionated in terms of molecular weight with high resolution by TGIC using a C18 bondedd silica column as the stationary phase and a mixture
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44abdac0bcdd96808639e49825394e51
https://doi.org/10.1002/(sici)1521-3935(20000201)201:3<320::aid-macp320>3.0.co
https://doi.org/10.1002/(sici)1521-3935(20000201)201:3<320::aid-macp320>3.0.co
Publikováno v:
Macromolecular Chemistry and Physics. 200:2188-2204
Thermodynamic principles and some applications of the temperature gradient interaction chromatography (TGIC) recently developed for the characterization of synthetic polymers are described. TGIC is a form of high performance liquid chromatography (HP
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc27ca31255d708255d4436f0625ec51
https://doi.org/10.1002/(sici)1521-3935(19991001)200:10<2188::aid-macp2188>3.0.co
https://doi.org/10.1002/(sici)1521-3935(19991001)200:10<2188::aid-macp2188>3.0.co
Publikováno v:
Macromolecules. 31:4114-4119
The linking reaction kinetics of a chlorosilane-linked polystyrene six-arm star was investigated by temperature gradient interaction chromatography using a light scattering detector. The precursor arm material (Mw = 83 000) was made by anionic polyme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc652dd9aaa5dce1172b9c641f931645
https://doi.org/10.1021/ma971751x
https://doi.org/10.1021/ma971751x
Publikováno v:
Macromolecules. 31:690-694
We report the characterization of polystyrene by temperature-gradient interaction chromatography (TGIC) with on-line light-scattering (LS) detection. Since a binary mixture eluent, CH2Cl2/CH3CN (57/43, v/v), was employed in TGIC, a systematic deviati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7863a8fac75255a12938c44d590d848
https://doi.org/10.1021/ma9710996
https://doi.org/10.1021/ma9710996
Publikováno v:
Macromolecules. 31:344-348
The molecular weight distribution of anionically polymerized poly(methyl methacrylate) (PMMA) was investigated by temperature gradient interaction chromatography (TGIC). PMMA was well separated under an isocratic elution condition in which C4-bonded
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c837a04d0372eda7dc8b9c1266175485
https://doi.org/10.1021/ma9707805
https://doi.org/10.1021/ma9707805
Publikováno v:
Macromolecular Symposia. 118:261-265
A new method, temperature gradient interaction chromatography(TGIC) is employed for the characterization of macromolecules. Fine and reproducible control of interaction between polymer chains and the alkyl chain bonded silica packing material can be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07d260ae869fd86d00aa43f722870628
https://doi.org/10.1002/masy.19971180136
https://doi.org/10.1002/masy.19971180136