陰陽(yáng)離子菁染料J-聚集體超快熒光特性及電子轉(zhuǎn)移機(jī)理研究.pdf

1、河北大學(xué)碩士學(xué)位論文陰陽(yáng)離子菁染料J聚集體超快熒光特性及電子轉(zhuǎn)移機(jī)理研究姓名：李春雷申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：光學(xué)指導(dǎo)教師：傅廣生楊少鵬20080601AbstractAbstractInthispaperthefluorescencedecaypropertyofJaggregatesofanioniccationiccyaninedyeadsorbedoncubicandtabularAgBrIgrainswithdifferentc

2、oncentrationisinvestigatedusingfemtosecondfluorescenceupconversiontechnologyThekineticsoftheultrafastelectrontransferandthespectralsensitizationpropertyinthedyesensitizedsystema塢detailedangledThesupersensitizationmechani

3、smoftheanioniccationiccyaninedyeisBycomparingthefluorescencedecaypropertyofthesensitizationsystemofseveraldyesitisfoundtheelectrontransfervelocitiesofJaggregatesofanioniccationicdyesislargerthanthatofaniondyecationdyeThe

4、primeconcentrationoftheanionic—cationiccyaninedyeisobtainedThecationicandanionicportionsoftheanioniccationiccyaninedyeshowreciprocalsupersensitizationeffectsintheredsensitizedandgreensensitizedregions，respectivelyInthere

5、dsensitizedregionthisisinaccord、Ⅳinlthemechanismof“aggregatepartitioning’；howeverinthegreensensitizedregion，theprocessisinaccordancewiththemechanismof“holetrapping’TheJaggregatesoftheanioniccationiccyaninedyehavetwoexcit

6、edstatesThus，moreelectronsaretransferredfromtheexcitedstatesoftheanioniccationiccyaninedyetotheconductionbandofTgrainAgBdOverall，itleadstoanextensionofthesensitizationrangeandincreasesthesensitivityofthephotographicmater