The Study of Intercalation Field through Positron Injection and the Synthesis, Structures and Properties of Intercalation Compounds
正电子注入插层场研究及插层化合物的合成、结构和性能
基本信息
- 批准号:03640414
- 负责人:
- 金额:$ 1.34万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for General Scientific Research (C)
- 财政年份:1991
- 资助国家:日本
- 起止时间:1991 至 1992
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
1. Synthesized 2,3-dichloro-9,10-anthraquinone, highly purified by zone-melting, was grown by the Bridgman method to a single crystal in which the molecular planes were oriented nearly in parallel. Positrons injected into a crystal, 14 x 8 x 6 mm^3 in size, which contained ca. 7.4 x 10^5 Bq^<22>NaCl at the center, emitted 511 keV gammaray upon annihilation with electrons in the crystal. Positrons were found to decay with a single lifetime component of 310 ps and the Doppler-broadening width along gamma// a was narrower than that along gamma// b or c, which demonstrated that the region where electrons moved freely was wider along the molecular C_<2v> axis. 2. The electronic structures of tetrathiafulvalene and pyridine intercalated into MnPS_3 single crystals were studied : the former was found to be in the mixed-valence state between TTF^+ and TTF^0, and the latter to form hydrogen-bonded PyH^+-Py complexes solvated with neutral pyridine molecules. The pyridine species were oriented perpendicularly to P_2S_6^<4-> layers. 3. A ternary intercalation compound of CsC_8 with hydrogen could be prepared by the reaction between CsC_8 and active hydrogen atoms generated on a hot tungsten filament. Gettering rates of RbC_8, KC_8 and CsC_8 for hydrogen gas were found to be large in this sequence, while those for oxygen were all in the order of 10^<-1>s^<-1>. A graphite-bromine intercalation compound in a diamond anvil cell showed pressure-induced phase transitions at 0.3, 0.8 and 1.2 GPa, which were found to be accompanied with inclination-changes of bromine-bonding axis against graphite layers. 4. Vaccum-sublimed C_<60> and C_<70>, isolated by column chromatography with 5% benzene in hexane on alumina, gave the positron-electron annihilation lifetimes of 427 and 403 ps, respectively, while C_<60>I_<0.08> gave two components for the lifetime spectrum.
1.合成的2,3-二氯-9,10-蒽醌经区熔高度纯化后,用Bridgman法生长成分子平面几乎平行取向的单晶。正电子被注入一个14 x 8 x 6 mm^3大小的晶体中,晶体中含有约7.4中心的x 10^5 Bq^<22>NaCl,在与晶体中的电子湮灭时发射511 keV的伽马射线。发现正电子以310 ps的单一寿命分量衰变,并且沿着gamma// a的多普勒增宽宽度比沿着gamma// B或c的多普勒增宽宽度窄,这表明电子自由移动的区域沿着分子C_轴更宽<2v>。2.研究了四硫富瓦烯和吡啶嵌入MnPS_3单晶的电子结构,发现四硫富瓦烯处于TTF^+和TTF^0的混合价态,吡啶与中性吡啶分子形成氢键PyH^+-Py复合物。吡啶物种垂直于P_2S_6层取向<4->。3.利用热钨丝上产生的活泼氢原子与CsC_8反应,可制得CsC_8与氢的三元插层化合物。RbC_8、KC_8和CsC_8对氢气的吸杂速率依次较大,而对氧气的吸杂速率均在10 μ s ~(-1)<-1>量级<-1>。石墨-溴层间化合物在0.3、0.8和1.2GPa压力下发生压致相变,并伴随着溴键合轴相对于石墨层的倾斜度变化。4.真空升华的C_<60>和C_<70>,用5%苯的己烷溶液在氧化铝上柱层析分离,正电子-电子湮没寿命分别为427和403 ps,而C_<60>I_<0.08>给出两个寿命谱分量。
项目成果
期刊论文数量(16)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
SANO,Mizuka: "Doppler Broadening of Positron Annihilation in Hexamethylbenzene and Hexachlorobenzene Molecular Single Crystals" J.Phys.Chem.Solids. (1992)
SANO,Mizuka:“六甲基苯和六氯苯分子单晶中正电子湮灭的多普勒展宽”J.Phys.Chem.Solids。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
MATSUZAKI,Susumu: "X-Ray Diffraction of A Stage-2 Graphite-Bromine Intercalation Compound at High Pressures" Mater.Sci.Forum. 91. 307-312 (1992)
MATSUZAKI,Susumu:“高压下 2 级石墨-溴插层化合物的 X 射线衍射”Mater.Sci.Forum。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
ICHIMURA,Kenji: "Hydrogenation of CsC_8 Graphite Intercalation Compounds by Atomic Hydrogen" Nucl.Instr.Methods Phys.Research A. 320. 604-605 (1992)
ICHIMURA,Kenji:“通过原子氢氢化 CsC_8 石墨插层化合物”Nucl.Instr.Methods Phys.Research A. 320. 604-605 (1992)
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
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- 通讯作者:
MURAKAMI,Hideoki: "Electron-Momentum Distribution in 2,3-Dichloro-9,10-anthraquinone Molecular Crystals Studied by positron Annihilation" J.Phys.Chem.Solids. (1993)
MURAKAMI,Hideoki:“通过正电子湮灭研究的 2,3-二氯-9,10-蒽醌分子晶体中的电子动量分布”J.Phys.Chem.Solids。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
MIYAZAKI,Takafumi: "Mixed-Valence TTF Intercalated in Lamellar MnPS_3 Crystals" Solid State Commun.(1993)
MIYAZAKI,Takafumi:“混合价 TTF 嵌入层状 MnPS_3 晶体”固态通讯。(1993)
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- 影响因子:0
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SANO Mizuka其他文献
SANO Mizuka的其他文献
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{{ truncateString('SANO Mizuka', 18)}}的其他基金
THE STUDY ON SYNTHESES AND SOLID-STATE PROPERTIES OF INTERSTITIAL COMPOUNDS BASED ON THE MOLECULAR INTERSPACE ELUCIDATED BY MEANS OF POSITRON ANNIHILATION
基于正电子湮灭阐明分子间隙的间隙化合物的合成及固态性质研究
- 批准号:
06640753 - 财政年份:1994
- 资助金额:
$ 1.34万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
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