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光子存储原理与光致变色材料 总被引:14,自引:0,他引:14
光子存储是信息科学中的一个前沿课题。本文主要包括以下内容: 光子存储的4种方式; 光子烧孔、电子捕获、光折变和光致变色存储的原理和材料; 双光子三维光存储原理和材料; 可能的发展方向。 相似文献
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一、前言光致变色材料的研究可以追溯到二十世纪初叶,当时曾作为染料合成的一个环节而开展了研究,迎来了最初的兴隆期,但到了三十年代,研究暂时处于低潮,直至五十年代,研究再次兴起,进行了多种新的光致变色化合物的合 相似文献
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光存储用有光致变色新材料—二芳杂环基乙烯化合物研究概况 总被引:1,自引:0,他引:1
二芳杂环基乙烯是近年来国际上倍受重视的一类新型光致变色特,它具有优良的热稳定性和抗疲劳性,有可能在不远的将来开发成为新一代光子存储材料。本文着介绍光致变色二芳杂环基乙烯的结构,合成及其主要性能,并对其发展动向也予以介绍。 相似文献
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Alex Julià‐López Dr. Jordi Hernando Dr. Daniel Ruiz‐Molina Pablo González‐Monje Dr. Josep Sedó Dr. Claudio Roscini 《Angewandte Chemie (International ed. in English)》2016,55(48):15044-15048
A novel strategy to achieve thermally switchable photochromism in solid materials is reported, which relies on the preparation of polymeric core–shell capsules containing solutions of photochromic dyes in acidic phase‐change materials. Upon changing the phase (solid or liquid) of the encapsulated medium, one of the two photochromic states of the system is selectively stabilized on demand, allowing for reversible interconversion between direct and reverse photochromism when thermally scanning through the melting temperature of the phase‐change material. This strategy, which does not require the addition of external agents or chemical modification of the dyes, proved to be general for different spiropyran photochromes and to be applicable to the fabrication of a variety of functional materials by simply embedding the capsules obtained into a solid matrix of choice. 相似文献
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萘氧基萘并萘醌的合成和光致变色性质 总被引:3,自引:0,他引:3
萘氧基萘并萘醌的合成和光致变色性质方政,杨志范,王淑芝,徐素贤,方天如,王佛松(吉林工学院化工系长春)(中国科学院长春应用化学研究所长春130022)关键词萘氧基萘并萘醌,合成,光致变色苯氧基萘并萘醌类光致变色材料具有耐疲劳,室温下几乎无热消失反应,... 相似文献
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V. G. Luchina I. Yu. Sychev V. S. Marevtsev T. Ya. Vlasenko Yu. D. Khamchukov M. I. Cherkashin 《Russian Chemical Bulletin》1992,41(12):2152-2157
The spectral and photochromic properties of bispiroanthro-bis-oxazine (bis-SAO) in toluene, DMF, and polystyrene films were investigated in the 77–300 K interval. It is shown that the long-wave part of the absorption spectrum of the starting form of the molecule is formed by three-electron transitions localized in the anthro-bis-oxazine fragment. The directions of the oscillators of these transitions relative to the nuclear. backbone of the molecule are proposed on the basis of luminescence polarization data. It is proposed that the photochromic properties of the solutions are determined by the existence of bis-SAO molecules in dimer form.N. N. Semenov Institute of Chemical Physics, Russian Academy of Sciences, 117977 Moscow. Institute of Solid State and Semiconductor Physics, Academy of Sciences of Belarus, 210023 Vitebsk. Translated fromIzvestiya Akademii Nauk, Seriya Khimicheskaya, No. 12, pp. 2718–2725, December, 1992. 相似文献
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合成了3种2-芳氧基-1,8-邻苯二甲酰基萘类光致变色化合物,通过核磁共振谱、红外光谱、质谱和元素分析确定了结构.对产物进行了荧光光谱测定,3种光致变色化合物的荧光强度和Stoke位移都较大.用紫外-可见分光光度计对其在丙酮溶液中的光致变色行为进行了测定,3种光致变色化合物在300-600 nm范围内都具有一定的光致变色性能和较大的吸光系数. 相似文献
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CaSfREhasbeenknownforalongtimeasanexcellentphosphor'.ThephotochronismofSinScrystal'hasbeenfound.Yasuski'repoFtedthatSin' ionstrapedelectronsandchangedintoSin' intheinfraredstimulablephosphorCaScontainingEuandSinions,butphotochromismhasnotbeenobserved.Inthepresentletter,thephotochromismwasobservedinCaS:Sm.Activatedcarbon,calciumsulfate,sodiumsulfateandSin(NO,),weremixedandground,andthen,themixturewasputintoanalumiacrucibleandheatedat950"Cfor3--4hours.Thesampleswereanalyzedbyx-raydiffrac… 相似文献