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A Concise Review on Surfactants and Its Significance 表面活性剂及其意义综述
International Journal of Applied Chemistry Pub Date : 2017-09-30 DOI: 10.37622/ijac/13.3.2017.663-672
N. Dave, Tejas Joshi
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引用次数: 34
Studies of Substituent and Solvent effect on Spectroscopic Properties of 6-OH-4-CH3, 7-OH-4-CH3 and 7-OH-4-CF3 Coumarin 取代基和溶剂对6-OH-4-CH3、7-OH-4-CH3和7-OH-4-CF3香豆素光谱性质的影响研究
International Journal of Applied Chemistry Pub Date : 2017-06-30 DOI: 10.37622/ijac/13.2.2017.353-368
Sanjay Kumar
{"title":"Studies of Substituent and Solvent effect on Spectroscopic Properties of 6-OH-4-CH3, 7-OH-4-CH3 and 7-OH-4-CF3 Coumarin","authors":"Sanjay Kumar","doi":"10.37622/ijac/13.2.2017.353-368","DOIUrl":"https://doi.org/10.37622/ijac/13.2.2017.353-368","url":null,"abstract":"This paper reports the solvent effects on the electronic absorption and fluorescence emission spectra of 6-OH-4-CH3, 7-OH-4-CH3 and 7-OH-4-CF3 Coumarin derivatives having -OH, -CH3 and-CF3 substituent at different positions in various solvents (Polar and Non-Polar). The first excited singlet state dipole moment and ground state dipole moment were calculated using Bakhshiev, Kawski-Chamma-Viallet and Reichardt-Dimroth equations and were compared for all the Coumarin studied. In all cases the dipole moments were found to be higher in the excited singlet state then in the ground state indicating a substantial redistribution of πelectron density in the excited state. The angle between the excited singlet state and ground state dipole moment is also calculated. The red shift of the absorption and fluorescence emission bands, observed for all the Coumarin studied upon increasing the solvent polarity indicating that the electronic transitions were π→π nature.","PeriodicalId":13860,"journal":{"name":"International Journal of Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88384606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Green approach of in - situ Chemical Immobilization of Lead in metal - Contaminated Soils of NCT of Delhi Using Coal Fly Ash 德里NCT金属污染土壤中粉煤灰原位化学固定化铅的绿色途径
International Journal of Applied Chemistry Pub Date : 2009-08-30 DOI: 10.37622/ijac/5.2.2009.63-71
M. Sharma, R. Saxena, S. Sharma, Suneeti Singh
{"title":"Green approach of in - situ Chemical Immobilization of Lead in metal - Contaminated Soils of NCT of Delhi Using Coal Fly Ash","authors":"M. Sharma, R. Saxena, S. Sharma, Suneeti Singh","doi":"10.37622/ijac/5.2.2009.63-71","DOIUrl":"https://doi.org/10.37622/ijac/5.2.2009.63-71","url":null,"abstract":"","PeriodicalId":13860,"journal":{"name":"International Journal of Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81703890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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