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Home > Papers > Photochemistry(including-Supramolecular-Photochemistry,-Photoelectrochemistry,-Laser-Chemistry,-Photographic-Chemistry,-etc.)
There are 4 papers published in subject: > since this site started. |
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1. Preparation of Iodo-Bodipy dimer as triplet photosensitizers and Application in Photooxidation and Triplet-Triplet Annihilation (TTA) Upconversion | |||
CUI Xiaoneng,ZHAO Jianzhang | |||
Chemistry 04 August 2015 | |||
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Abstract:Iodo-boron dipyrromethene (Bis-bodipy) dimer (B-4I) was prepared as organic triplet photosensitizer for triplet-triplet annihilation (TTA) upconversion and photooxidation. We introduces four iodine atoms to the Bodipy chromophore, therefore the intersyster crossing (ISC) was improved compared to the single iodo-boron dipyrromethene. The organic photosensitizers show strong UV-vis absorptions at 490-590 nm. Long-lived triplet excited state (triplet lifetime up to 72.2 μs) is populated upon excitation of the photosensitizers, proved by nanosecond time-resolved transient absorption spectroscopy. The triplet state was located in the Bodipy part for B-4I by DFT caculations of spin density surface analysis. The singlet oxygen quantum yield is up to 90%, which is higher than traditional photosensitizers, such as tetraphenylporphyrin (TPP), Rose Bangel (RB) and Methylene Blue (MB). In the photooxidation reactions of 1,5-dihydroxy naphthalene, the product Juglone was obtained with high yield. The TTA upconversion was also studied with B-4I as the triplet photosensitizer and with perylene as triplet acceptor, the upconversion quantum yield is up to 5.76%. | |||
TO cite this article:CUI Xiaoneng,ZHAO Jianzhang. Preparation of Iodo-Bodipy dimer as triplet photosensitizers and Application in Photooxidation and Triplet-Triplet Annihilation (TTA) Upconversion[OL].[ 4 August 2015] http://en.paper.edu.cn/en_releasepaper/content/4651799 |
2. Evaluation of uvioresistant effect of naphthopyran derivatives on photo-oxidation of poly(ethylene oxide) | |||
Guang Wang,Yi He,Kuo Zhang | |||
Chemistry 11 December 2013 | |||
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Abstract:Naphthopyran and its derivatives were synthesized and used as ultraviolet absorbent in photo-oxidation of poly(ethylene oxide) (PEO). The absorption spectra of naphthopyran before and after irradiation of UV light illustrated that the absorbance of naphthopyran covered a wide range of wavelengths, especially in UV light range. The studies of infrared spectra, differential scanning calorimetric and thermogravimetric analysis proved that the addition of naphthopyran greatly reduced the photo-oxidation speed of PEO. | |||
TO cite this article:Guang Wang,Yi He,Kuo Zhang. Evaluation of uvioresistant effect of naphthopyran derivatives on photo-oxidation of poly(ethylene oxide)[OL].[11 December 2013] http://en.paper.edu.cn/en_releasepaper/content/4574087 |
3. Progress in Cancer Diagnosis and Treatment Based on Gold Nanorods | |||
Zhang Tianmu,Li Changli,Zhao Lihui,Ren Yu,Guo Moran,Zhang Xihe,Cai Hongxing | |||
Chemistry 09 April 2012 | |||
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Abstract:In this paper, the progress in cancer diagnosis and treatment were reviewed which is based on gold nanorods (Au-NRs). Synthesis and properties of Au-NRs were described, more specifically on typical methods of surface modification, surface active agent selection, as well as biological image and cancer treatment which are based on Au-NRs. Also current difficulty and future development were discussed. | |||
TO cite this article:Zhang Tianmu,Li Changli,Zhao Lihui, et al. Progress in Cancer Diagnosis and Treatment Based on Gold Nanorods[OL].[ 9 April 2012] http://en.paper.edu.cn/en_releasepaper/content/4473640 |
4. Photo-responsive organic-inorganic hybrid sol-gel material for Ibuprofen | |||
TANG Qian,GONG Chengbin,FU Xiangkai,LIN Hanhua | |||
Chemistry 10 May 2011 | |||
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Abstract:In this paper, a photo-responsive molecularly imprinted organic-inorganic hybrid sol-gel material was prepared by covalent imprinting of the template (ibuprofen) - functional monomer (4-hydroxyl-4′-[(Triisopropoxysilyl)propyloxy] azobenzene) for the specific binding of ibuprofen. After imprinting, ibuprofen was removed via hydrolysis in acid. The new molecularly imprinted organic-inorganic hybrid sol-gel material was found to behavior similarly to the organic polymer based photo-responsive molecularly imprinted polymer (MIP). The favorable binding strength of the imprinted receptor sites in the MIP for ibuprofen was found to be 2.28 x 103 M-1. Density of receptor sites in the MIP material was 4.0 ?mol/g-MIP. The release and uptake of ibuprofen from THF solution by the material could be reversibly photo-regulated upon alternate irradiation at 365 and 440 nm, respectively. | |||
TO cite this article:TANG Qian,GONG Chengbin,FU Xiangkai, et al. Photo-responsive organic-inorganic hybrid sol-gel material for Ibuprofen[J]. |
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