th  - 1988 - 51st ENC Conference

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THU 11:35 I DYNAMIC NUCLEAR POLARIZATION IN THE NUCLEAR ROTATING FRAME, R~A. Wind, H. Lock, L. Li and G.E. Maciel, Department of Chemistry, Colorado State University, Ft. Collins, CO 80523. Traditionally Dynamic Nuclear Polarization (DNP) has been used to enhance the nuclear polarization directed along the external magnetic field. Several DNP mechanisms can be responsible for this polarization enhancement, depending on the time- dependence and character of the electron-nuclear interactions: the Overhauser effect, the Solid-state effect and the direct and indirect thermal mixing effects. In solids containing organic radicals all mechanisms often determine the observed enhancement. It will be shown that it is also possible to enhance the nuclear polarization in its rotating frame. This is obtained by irradiating with a strong r.f. field at the nuclear Larmor frequency during the microwave irradiation. Com- pared with the conventional method of DNP this technique has several advantages: (i) the build-up time of the nuclear polarization is determined by the rotating- frame relaxation time, which is often much shorter than the Zeeman relaxation time; (ii) The 'forbidden' transition rate, which determines the enhancement due to the indirect thermal mixing effect, is several orders ofmagnitude larger in the rotating frame than in the laboratory frame. As a result the enhancement due to this effect is one to two orders of magnitude larger in the rotating frame than in the laboratory frame; (iii) If the Zeeman relaxation time is short, the DNP enhancement in the laboratory frame can be reduced, whereas the rotating-frame enhancement remains large; (iv) rotating-frame DNP of abundant spins opens the possibility for multiple- contact cross-polarization (CP) experiments and for CP experiments with long contact times, independent of the value of the rotating-frame relaxation time. Applications will be shown of rotating-frame 1H DNP and 13C-1H CP experiments in doped styrene and coal. 70
THIS SECTION CONTAINS A LISTING OF POSTERS FOLLOWED BY THE ABSTRACTS IN THE SAME SEQUENCE AS THE LISTING. PLEASE NOTE THE NUMBER PRECEDING EACH TITLE IN THE LISTING. EACH POSTER SHOULD BE MOUNTED ON THE BOARD WITH THE CORRESPONDING NUMBER. AUTHORS OF POSTERS WITH EVEN NUMBERS SHOULD BE PRESENT DURING THE POSTER SESSION ON MONDAY AFTERNOON. AUTHORS OF POSTERS WITH ODD NUMBERS SHOULD BE PRESENT DURING THE WEDNESDAY AFTERNOON SESSION. 71
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29 th �� - 1988 Rochester
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PROGRAM: This conference program ha
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The Executive Committee of the 29th
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A A 0 0 ,-..1 I Z Z 0 "c N "1" i 0
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Restaurants in Rochester Restaurant
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8:30 a.m. 8:35- 10:05 10:05 - 10:25
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8:30 a.m. 8:35 a.m. 9:05 a.m. 9:15
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f~ I UNTRUNCATIO~I OF DIPOLE-DIPOLE
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MON 9:25 HIGH RESOLUTION ELECTROPHO
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Page 21 and 22: ~'-O-i 0 N i0:55 MEASUREMENTS OF TW
Page 23 and 24: MON 11:3S 12D CHEMICAL SHIFT ANISOT
Page 25 and 26: 7:30 p.m. 8:00 p.m. 8:10 p.m. 8:40
Page 27 and 28: HON Eve 8:00 The 13C Relaxation Beh
Page 29 and 30: THE WORLD AND WONDERS OF 3H NMR SPE
Page 31 and 32: 8:30 a.m. 9:00 a.m. 9:10 a.m. 9:20
Page 33 and 34: TWO DIMENSIONAL LINEAR PREDICTION N
Page 35 and 36: TUE 9"20 ] 2D ROTATING FRAME SPECTR
Page 37 and 38: 10:40 a.m. 11:00 a.m. 11:20 a.m. 11
Page 39 and 40: TUE ii'00 J WATER SUPPRESSION TECHN
Page 41 and 42: TUE 11:30 J FREQUENCY SWITCHED INVE
Page 43 and 44: 7:30 p.m. 8:00 p.m. 8:30 p.m. 8:50
Page 45 and 46: • . r T[-~-UE ~ t~ve 8:00! 63,65C
Page 47 and 48: TUE Eve 8-50 } Cu NQR OF YBa2Cu30 x
Page 49 and 50: ~X [I'IED 8:30 I REMOVAL OF EXTRANE
Page 51 and 52: . r WED 9:25 ] A STATIC NMR IMAGE O
Page 53 and 54: WED 9" 45 IFLUID AND SOLID STATE NM
Page 55 and 56: i MULTIVOLUME SELECTIVE SPECTROSCOP
Page 57 and 58: [WED 11-10 I SELF SHIELDED GRADIENT
Page 59 and 60: [WED 11:45 ] ANGIOGRAPHY USING MAGN
Page 61 and 62: THU 8:30 "TETHERED" BIOLOGICAL SYST
Page 63 and 64: • / I DYNAMICS OF THE GRAMICIDIN
Page 65 and 66: I THU 9:40 I NMR STUDIES OF ANTI-SP
Page 67 and 68: THU 10"2S I NEW TECHNIQUES POR DYNA
Page 69: I THU 11 : 05 I DYNAMIC NUCLEAR POL
Page 73 and 74: 9 ELIMINATION OF PHASE ROLL, SOLVEN
Page 75 and 76: 25 NUCLEAR MAGNETIC RESONANCE STUDI
Page 77 and 78: ~k 41 A HYPO-RELAXATION AGENT; SIMU
Page 79 and 80: 57 STRUCTURAL STUDIES OF LIPIDS IN
Page 81 and 82: 73 THE AUTOMATED NMR LABORATORY; SP
Page 83 and 84: 89 13C NMR ASSIGNMENTS OF DNA OLIGO
Page 85 and 86: 105 EVALUATION OF DOUBLE TUNED CIRC
Page 87 and 88: 121 BROADBAND SPIN DECOUPLING IN TH
Page 89 and 90: 137 TWO-DIMENSIONAL 13C{15N}, 13C{1
Page 91 and 92: 153 NMR CHARACTERIZATION OF THE SOL
Page 93 and 94: 169 SPECTROSCOPY WITH EXACT APODIZA
Page 95 and 96: 185 PARSING THE EDITED 1H NMR SIGNA
Page 97 and 98: . z 201 THE CORRELATION OF 1H-19F C
Page 99 and 100: i m 3 I 31p SOLID STATE NMR STUDIES
Page 101 and 102: CALCULATION OF 2951MAS NMR CHEMICAL
Page 103 and 104: AN NMR STUDY OF MISCIBLE BLENDS IN
Page 105 and 106: 15 II9F CRAMPS OF INORGANIC FLUORID
Page 107 and 108: 19 I DIPOLARAND SPIN-ROTATION POLAR
Page 109 and 110: 2 3- I A SOLID-STATE 2H and 13C NMR
Page 111 and 112: 27 1 COLLECTION OF PHOSPHORUS-31 NM
Page 113 and 114: 31 DELAYED REFOCUSSING TWO-DIMENSIO
Page 115 and 116: 35 DYNAMIC NUCLEAR POLARIZATION STU
Page 117 and 118: I 39 2D NMR STUDIES AT 600 MHZ OF A
Page 119 and 120: 43 Coherent Averaging Theory Under
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46 CARBON-13 SPECTRAL ASSIGNMENTS O
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a b 48 SEMUT SPECTRAL EDITING, CALI
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'--- V 5 2 j INTERCONWERSION OF VAL
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[ ~ THE SOURCE OF AN ARTIFACT IN TH
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60 GLUCOSE METABOLISM IN PERFUSED H
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. °- F 64 I MICROSCOPIC IMAGING OF
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68 69 CONFORMATIONAL ANALYSIS via V
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72 I SCUBA, A MAY TOHARDS COMPLETE
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76 NMR CHARACTERIZATION OF THE GLYP
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8o I HIGH RESOLUTION MR IMAGING AT
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A PROBE WITH HIGHER DECOUPLING EFFI
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88 I SOLID STATE ll3cd I~CLEAR }~GE
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- - 92 l CHARACTERIZATION OF NORMAL
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96 AN EVALUATION OF NEW PROCESSING
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. . I00 I NOVEL RESONATOR DESIGNS,
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104 TAYLOR TRANSFORMATION OF 2D NMR
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108 PERFORMANCE COMPARISON OF DOUBL
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RECENT EXTENSIONS OF NOESYSIM, A PR
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116 ] NODIFICATIONS TO A JEOL GX270
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I 12 o I SPECIATION OF WATER IN GLA
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124 I A COMPLETELY INTEGRATED NETWO
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I-- 1 2 8 IVOLUME-SELECTIVE SIGNAL
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-- is 2 I NATURAL ABUNDANCE 13 C an
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. ° THREE-DIMENSIONAL STRUCTURE OF
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~-'-- 140 DIRECT OBSERVATION OF LON
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144 I I IH AND 13C REFOCUSED GRADIE
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~ (POSTER ABSTRACT) BARBARA LYONS/C
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1 52 I ~IR STUDY OF NAPHTHALENE TRA
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is6 I ROTATING FRAME COHERENCE TRAN
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16 0 I A 27AL MAS STUDY OF AMORPHOU
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164 I MODIFICATIOH OF A BRUKER WH-3
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IN VIVO 31p AND IH NMR SPECTROSCOPY
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. r 172 JMAGIC ANGLE SPINNING SEPAR
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2 . ° I- 176 I Michael A. Kennedy
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. o . o 180 l17o/Is NMR MICROSCOPY
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To be presented at the 29th Experim
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INHIBITION OF ALANINE RACEMASE BY T
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192 RESOLUTION ENHANCEMENT OF PHOSP
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196 1 TR FLUOROETHOXY DERIVATIVES:
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200 INTERPRETAT IION OF 13 C NHR MI
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204 RECENT PROGRESS IN HIGH RESOLUT
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Page No. ACEVEDO, H F 165 ACKERMAN,
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1:~ge No. GUO, D 200 GUO, W 196 GUO
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OPELLA, S J ORENDT, A M OTTING, G P
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ZLOTNIK-MAZORIo T ZUMBULYADIS, N Pa
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David B. Bailey USI Chemicals Co. 1
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Yvan Boulanger Univ de Montreal Ins
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Helga Cohen Univ of So Carolina Che
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F. David Doty Doty Scientific Inc.
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Alan Freyer Pennsylvania State Univ
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Gordon Hamer Xerox Research Center-
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Timothy Hyman Syracuse University 3
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Robert A Kinsey BF Goodrich 9921Bre
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Jay J. Listinsky U of Rochester-Dep
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Dale Mierke Univ of Calif, San Dieg
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Jeanne C Owens Chemistry Dept., '.1
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Gade S. Reddy DuPont Experimental S
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Charles Schramm Catalytica Assoc. I
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Richard F. Sprecher U.S. Dept of En
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Steve Unger U. C. Davis NMR Facilit
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Toni Wirthlin Varian Associates 611
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th  - 1988 - 51st ENC Conference

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