INVESTIGATION OF H2SO4-DOPED, RING-DEUTERATED POLY(PARA-PHENYLENE VINYLENE) USING SOLID-STATE H-2 QUADRUPOLE ECHO NMR-SPECTROSCOPY

被引：16

作者：

SIMPSON, JH ^{[1
]}

RICE, DM ^{[1
]}

KARASZ, FE ^{[1
]}

机构：

[1] UNIV MASSACHUSETTS,DEPT POLYMER SCI & ENGN,AMHERST,MA 01003

来源：

POLYMER | 1991年 / 32卷 / 13期

关键词：

POLY(PARA-PHENYLENE VINYLENE); SPECTROSCOPY; DOPING;

D O I：

10.1016/0032-3861(91)90071-P

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Ring-deuterated poly(p-phenylene vinylene) has been doped with concentrated sulphuric acid and examined with H-2 quadrupole echo nuclear magnetic resonance spectroscopy. Doping is observed to change the relative population of fast versus slow flipping p-phenylene rings. This relationship has been investigated over a range of temperatures. Modelling this system as a two-site chemical exchange shows that the change in the relative populations of fast versus slow 'flippers' corresponds to an increase in the activation energy for the 180-degrees ring flip. The width of the distribution of flip rates is also observed to increase upon doping. At elevated temperatures the samples studied undergo a significant loss of mass which corresponds to a loss of dopant. The chemistry of this process is examined.

引用

页码：2340 / 2344

页数：5

共 50 条

[21] Ring dynamics of poly(p-phenylene terephthalamide) and its derivatives by solid state 2H NMR
Poon, C.D.
Samulski, E.T.
Benicewicz, B.C.
Polymer Preprints, Division of Polymer Chemistry, American Chemical Society, 1993, 34 (02):
[22] SOLID-STATE H-2 NMR-STUDY OF THYMIDINE - BASE RIGIDITY AND RIBOSE RING FLEXIBILITY IN DEOXYNUCLEOSIDES
HIYAMA, Y
ROY, S
COHEN, JS
TORCHIA, DA
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1989, 111 (23) : 8609 - 8613
[23] THE MEASUREMENT OF H-2-C-C-X TORSION ANGLES WITH SOLID-STATE DEUTERIUM NMR-SPECTROSCOPY
BUTLER, LG
GUO, K
JACKISCH, MA
JARRETT, WL
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1988, 195 : 244 - POLY
[24] DYNAMICS OF CYCLOHEXAAMYLOSE (ALPHA-CYCLODEXTRIN).6 H2O BY H-1 SOLID-STATE NMR-SPECTROSCOPY
LACELLE, S
GERSTEIN, BC
CARBOHYDRATE RESEARCH, 1989, 186 (01) : 29 - 37
[25] STUDIES OF CYCLODEXTRIN INCLUSION COMPLEXES IN THE SOLID-STATE BY THE C-13 CP MAS AND H-2 SOLID ECHO NMR METHODS
HALL, LD
LIM, TK
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1986, 108 (10) : 2503 - 2510
[26] Metal-Cation-Independent Dynamics of Phenylene Ring in Microporous MOFs: A 2H Solid-State NMR Study
Khudozhitkov, Alexander E.
Kolokolov, Daniil I.
Stepanov, Alexander G.
Bolotov, Vsevolod A.
Dybtsev, Danil N.
JOURNAL OF PHYSICAL CHEMISTRY C, 2015, 119 (50): : 28038 - 28045
[27] Dynamics of the hydrogen-bonding arrangement in solid triphenylmethanol:: An investigation by solid-state 2H NMR spectroscopy
Aliev, AE
MacLean, EJ
Harris, KDM
Kariuki, BM
Glidewell, C
JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (12): : 2165 - 2175
[28] SHORT HYDROGEN-BONDS IN SALTS OF DICARBOXYLIC-ACIDS - STRUCTURAL CORRELATIONS FROM SOLID-STATE C-13 AND H-2 NMR-SPECTROSCOPY
KALSBEEK, N
SCHAUMBURG, K
LARSEN, S
JOURNAL OF MOLECULAR STRUCTURE, 1993, 299 : 155 - 170
[29] STRUCTURAL CHARACTERIZATION OF ORGANOMETALLIC SANDWICH INTERCALATES OF TIN AND ZIRCONIUM DICHALCOGENIDES BY X-RAY AND NEUTRON-DIFFRACTION AND SOLID-STATE H-2 NMR-SPECTROSCOPY
WONG, HV
EVANS, JSO
BARLOW, S
MASON, SJ
OHARE, D
INORGANIC CHEMISTRY, 1994, 33 (24) : 5515 - 5521
[30] STUDIES ON THE INTERACTION OF ANESTHETIC STEROIDS WITH PHOSPHATIDYLCHOLINE USING H-2 AND C-13 SOLID-STATE NMR
MAKRIYANNIS, A
SIMINOVITCH, DJ
DASGUPTA, SK
GRIFFIN, RG
BIOCHIMICA ET BIOPHYSICA ACTA, 1986, 859 (01) : 49 - 55

← 1 2 3 4 5 →