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Krishna NV, Singh VK, Swain D, Rao SV, Giribabu L. Optical, electrochemical, third order nonlinear optical, and excited state dynamics studies of bis(3,5-trifluoromethyl)phenyl-zinc phthalocyanine. RSC Adv 2015. [DOI: 10.1039/c4ra14390f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthesis and characterisation of a Zn phthalocyanine substituted with bis(3,5-trifluoromethyl)phenyl groups at peripheral positions by absorption, fluorescence and electrochemical techniques. Excited state dynamics were investigated by fs degenerate pump–probe spectroscopy.
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Affiliation(s)
- Narra Vamsi Krishna
- Inorganic and Physical Chemistry Division
- Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| | - Varun Kumar Singh
- Inorganic and Physical Chemistry Division
- Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| | - Debasis Swain
- Advanced Centre of Research in High Energy Materials (ACRHEM)
- University of Hyderabad
- Hyderabad 500046
- India
| | - Soma Venugopal Rao
- Advanced Centre of Research in High Energy Materials (ACRHEM)
- University of Hyderabad
- Hyderabad 500046
- India
| | - Lingamallu Giribabu
- Inorganic and Physical Chemistry Division
- Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
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Sakamoto K, Yoshino S, Takemoto M, Furuya N. Syntheses of near infrared absorbed phthalocyanines to utilize photosensitizers. J PORPHYR PHTHALOCYA 2013. [DOI: 10.1142/s1088424613500326] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Phthalocyanines have become of major interest as functional colorants for various applications. In order to use various applications especially photosensitizers, the absorption maxima called Q-band of phthalocyanines are required to be shifted to the near infrared region. Substituted phthalocyanine analog alkylbenzopiridoporphyrazins, especially zinc bis(1,4-didecylbenzo)-bis(3,4-pyrido)porphyrazine, and toroidal-shaped phthalocyanines having aminoamine dendric side chains such as toroidal zinc poly(aminoamine)phthalocyanine dendrons were synthesized. Phthalocyanines of two types reportedly use photosensitizers for photodynamic therapy of cancer. The respective efficacies of photodynamic therapy of cancer for zinc bis(1,4-didecylbenzo)-bis(3,4-pyrido)porphyrazine and its regioisomers were estimated using laser-flash photolysis. The capability of using photodynamic therapy for toroidal zinc poly(aminoamine)phthalocyanine dendrons was assessed using a cancer cell culture. Both phthalocyanines were suitable for the use as a photosensitizer as photodynamic therapy of cancer. Then, non-peripheral thioaryl substituted phthalocyanines, 1,4,8,11,15,18,22,25-octakis(thioaryl)phthalocyanines, such as 1,4,8,11,15,18,22,25-octakis(thiophenylmethyl)phthalocyanines, 1,4,8,11,15,18,22,25-octakis(thiophenylmethoxy)phthalocyanines, and 1,4,8,11,15,18,22,25-octakis(thiophenyl tert-butyl)phthalocyanines were also synthesized in order to develop next- generation photovoltaic cells and/or dye-sensitized solar cells. Non-peripheral substituted 1,4,8,11,15,18,22,25-octakis(thioaryl)phthalocyanines exhibited a Q-band in the near infrared region. Electrochemical measurements were performed on the above-mentioned 1,4,8,11,15,18,22,25-octakis(thioaryl)phthalocyanines described above to examine their electron transfer abilities and electrochemical mechanisms. The compounds 1,4,8,11,15,18,22,25-octakis(thioaryl)phthalocyanines are anticipated to be appropriate materials for use in the next generation of photovoltaic cells.
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Affiliation(s)
- Keiichi Sakamoto
- Department of Sustainable Engineering, College of Industrial Technology, Nihon University, 1-2-1 Izumi-cho, Narashino-shi, Chiba-ken 275-8575, Japan
- Academic Major of Applied Molecular Chemistry, Graduate School of Industrial Technology, Nihon University, 1-2-1 Izumi-cho, Narashino-shi, Chiba-ken 275-8575, Japan
| | - Satoru Yoshino
- Department of Sustainable Engineering, College of Industrial Technology, Nihon University, 1-2-1 Izumi-cho, Narashino-shi, Chiba-ken 275-8575, Japan
- Academic Major of Applied Molecular Chemistry, Graduate School of Industrial Technology, Nihon University, 1-2-1 Izumi-cho, Narashino-shi, Chiba-ken 275-8575, Japan
| | - Makoto Takemoto
- Department of Sustainable Engineering, College of Industrial Technology, Nihon University, 1-2-1 Izumi-cho, Narashino-shi, Chiba-ken 275-8575, Japan
| | - Naoki Furuya
- Academic Major of Applied Molecular Chemistry, Graduate School of Industrial Technology, Nihon University, 1-2-1 Izumi-cho, Narashino-shi, Chiba-ken 275-8575, Japan
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Sekkat N, van den Bergh H, Nyokong T, Lange N. Like a bolt from the blue: phthalocyanines in biomedical optics. Molecules 2011; 17:98-144. [PMID: 22198535 PMCID: PMC6269082 DOI: 10.3390/molecules17010098] [Citation(s) in RCA: 183] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2011] [Revised: 12/05/2011] [Accepted: 12/14/2011] [Indexed: 01/08/2023] Open
Abstract
The purpose of this review is to compile preclinical and clinical results on phthalocyanines (Pcs) as photosensitizers (PS) for Photodynamic Therapy (PDT) and contrast agents for fluorescence imaging. Indeed, Pcs are excellent candidates in these fields due to their strong absorbance in the NIR region and high chemical and photo-stability. In particular, this is mostly relevant for their in vivo activation in deeper tissular regions. However, most Pcs present two major limitations, i.e., a strong tendency to aggregate and a low water-solubility. In order to overcome these issues, both chemical tuning and pharmaceutical formulation combined with tumor targeting strategies were applied. These aspects will be developed in this review for the most extensively studied Pcs during the last 25 years, i.e., aluminium-, zinc- and silicon-based Pcs.
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Affiliation(s)
- Nawal Sekkat
- School of Pharmaceutical Sciences, University of Lausanne/Geneva, Geneva, 30, quai Ernest Ansermet, Geneva CH-1211, Switzerland
| | - Hubert van den Bergh
- Laboratory of Photomedicine, Swiss Federal Institute of Technology (EPFL), Lausanne CH-1015, Switzerland
| | - Tebello Nyokong
- Department of Chemistry, Rhodes University, Grahamstown 6140, South Africa
| | - Norbert Lange
- School of Pharmaceutical Sciences, University of Lausanne/Geneva, Geneva, 30, quai Ernest Ansermet, Geneva CH-1211, Switzerland
- Author to whom correspondence should be addressed; ; Tel.:+41-22-379-3335; Fax: +41-22-379-6567
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