TY - JOUR
T1 - A comparative study of third-order optical nonlinearity of symmetrical dipolar chromogenic probes and their enhancement by different metal ions
AU - Janaa, Atanu
AU - Lim, Jong Min
AU - Parkb, Sun Woo
AU - Kimb, Dongho
AU - Bharadwaja, Parimal K.
PY - 2011/3
Y1 - 2011/3
N2 - Spectroscopy Laboratory for Functional o-Electronic Systems and Department of Chemistry Yonsei University, Seoul 120-749, Republic of Korea We have investigated the two-photon absorption properties of three symmetrical NLO-phores, L1, L2 and L3, having different conjugation lengths as well as different binding sites like cryptand, crown ether and bipyridyl moiety. The TPA properties have been measured by a femtosecond laser at 800 nm, which is in the window of 'in vivo' imaging. Upon metal ion binding, the TPA cross-section values are enhanced to different extents depending on the nature of metal ion and the overall architecture of the molecular system as well.The unique CT transition process after metal ion incorporation, along with various conjugation lengths of the NLO-phores, fully elucidates the structure-property relationship of the photophysical properties.
AB - Spectroscopy Laboratory for Functional o-Electronic Systems and Department of Chemistry Yonsei University, Seoul 120-749, Republic of Korea We have investigated the two-photon absorption properties of three symmetrical NLO-phores, L1, L2 and L3, having different conjugation lengths as well as different binding sites like cryptand, crown ether and bipyridyl moiety. The TPA properties have been measured by a femtosecond laser at 800 nm, which is in the window of 'in vivo' imaging. Upon metal ion binding, the TPA cross-section values are enhanced to different extents depending on the nature of metal ion and the overall architecture of the molecular system as well.The unique CT transition process after metal ion incorporation, along with various conjugation lengths of the NLO-phores, fully elucidates the structure-property relationship of the photophysical properties.
KW - Bioinorganic chemistry
KW - Chromogenic probes
KW - Coordination chemistry
KW - NLO-phores
KW - Optical nonlinearity
KW - Two photon absorption
UR - http://www.scopus.com/inward/record.url?scp=79952792991&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:79952792991
SN - 0376-4710
VL - 50
SP - 511
EP - 518
JO - Indian Journal of Chemistry - Section A Inorganic, Physical, Theoretical and Analytical Chemistry
JF - Indian Journal of Chemistry - Section A Inorganic, Physical, Theoretical and Analytical Chemistry
IS - 3-4
ER -