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测量了类胡萝卜素在十的负六到负十二次方浓度下的相关电子，振动光谱。结果表明，随浓度降低，即共轭π电子离域扩展，分子结构有序性增强，使其性能发生极大变化：拉曼散射截面增加四个数量级（达十的负二十次方），电子光谱等也发生很大变化。不难推测，其他非线性，电子态，振动态，能级寿命，光能转移，光电导等性能也一定发生很大变化。 研究类胡萝卜素分子结构有序机理和相关技术，掌握分子结构有序对其性能的影响，可以丰富分子学理论，也为实现高性能的光能采集，存储，转移及多烯类分子导线等光电器件提供有价值的资料。 采用课题组独立设计的液芯光纤内共振拉曼，红外-可见双共振拉曼等技术，fs，原子力显微镜等技术。研究类胡萝卜素分子结构有序性对其性能的影响，包括对吸收，散射，电子态，振动态，能级，寿命，光能转移，导电电阻等影响；研究环境对π电子离域的影响；研究获得高有序性类胡萝卜素分子的方法。 |
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doudounba(金币+10,VIP+0): 9-11 08:25
doudounba(金币+10,VIP+0): 9-11 08:25
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Carotenoids were measured in the negative 10 to negative six twelve parties related to the concentration of electronic, vibrational spectra. The results showed that with the lower concentration, namely, conjugated π electron delocalization expansion, the molecular structure of order has increased, a dramatic change in its performance: Raman scattering cross-section increased by four orders of magnitude (up to 10 negative 20 th power), Electronic spectra were also changed dramatically. Is not difficult to speculate, other non-linear, electronic states, vibrational states, life-energy, solar energy transfer, optical conductivity and other properties must also change dramatically. Study the molecular structure of carotenoids and orderly mechanism and related technologies to grasp the molecular structure of its performance and orderly, can enrich the molecular theory, but also to achieve high performance solar energy collection, storage, transfer and multi-vinyl molecular wire, etc. optoelectronic devices provide valuable information. Use of independent design research group within the liquid-core optical fiber Raman resonance, infrared - visible double resonance Raman techniques, fs, atomic force microscopy techniques. Study the molecular structure of carotenoids and orderly nature of the impact of its properties, including absorption, scattering, electronic states, vibrational states, energy level, life, light transfer, conductive resistance and other effects; research environment of the π electron delocalization effect ; studies of carotenoids in order to obtain high-molecular methods.  |
2楼2009-09-08 15:26:23
jw227
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doudounba(金币+15,VIP+0): 9-11 08:25
doudounba(金币+15,VIP+0): 9-11 08:25
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The electronic and vibrational spectra of carotenoids were measured from the concentration of 10-6 to 10-12. The results showed the orderliness of structure increased and properties was changed dramatically, with the reduction of concentration, with which extended delocalization of the conjugated π electron. Raman scattering cross-section increased by four orders of magnitude (up to 10 -20) and electronic spectra were also changed dramatically. Therefore, other properties must also change significantly such as non-linear, electronic states, vibrational states, level liftime, light energy transfer, optical conductivity. It could enrich the molecular theory that studying on orderliness mechanism and related technologies of carotenoids，obtaining the impact of the structure orderliness to its properties . Moreover, It could provide valuable information for achieving light energy collection with high performance, storage, transfer and producing optoelectronic devices such as multi-vinyl molecular wire. [ Last edited by jw227 on 2009-9-8 at 17:32 ] |
3楼2009-09-08 17:30:42
jw227
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doudounba(金币+5,VIP+0): 9-11 08:26
doudounba(金币+5,VIP+0): 9-11 08:26
| Using Raman resonance of liquid-core optical fiber independently designed by our group, infrared-visible double resonance Raman techniques, fs and atomic force microscopy techniques, the impact was studied about the structure orderliness to properties of carotenoids, which of carotenoids are including absorption, scattering, electronic states, vibrational states, energy level, lifetime, light transfer, conductive resistance and others. The impact about environment to delocalization of the π electron and the method to obtain carotenoids with high orderliness were also studied. |
4楼2009-09-08 17:45:58