Dendritic porphyrins: synthesis and third-order optical non-linearity

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Dendritic porphyrins: synthesis and third-order optical non-linearity

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Title: Dendritic porphyrins: synthesis and third-order optical non-linearity
Author: SINGH, BP; VIJAYA, R; SHETTY, SJ; KANDASAMY, K; PUNTAMBEKAR, PN; SRIVASTAVA, TS
Abstract: First- and second-generation dendritic porphyrins were synthesized by cascade polymer methodology. The second molecular hyperpolarizabilities (gamma) of these dendritic porphyrins as well as 5,10,15,20-tetraphenylporphyrin were measured by the Z-scan technique at 800 nm using a mode-locked Ti:sapphire laser. The relationship between the various structures and their corresponding second molecular hyperpolarizabilities are explained on the basis of the oscillator strength of the Q band and the increasingly electron-rich microenvironment created by the dendritic branches around the porphyrin core. Copyright (C) 2000 , Ltd.
URI: http://dx.doi.org/10.1002/1099-1409(200011)4:7<659::AID-JPP259>3.0.CO;2-K
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9605
http://hdl.handle.net/10054/9605
Date: 2000


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