naa a22 4500 510733387 CHVBK 20180411083001.0 cr unu---uuuuu 180411e20130101xx s 000 0 eng 10.1007/s12039-013-0366-1 doi (NATIONALLICENCE)springer-10.1007/s12039-013-0366-1 Synthesis and two-photon absorption property of new π -conjugated donor-acceptor polymers carrying different heteroaromatics [Elektronische Daten] [M SUNITHA, K VISHNUMURTHY, A ADHIKARI] In this communication, we report the synthesis of three newly designed fluorescent polymers P1-P3, starting from simple thiophene derivatives through precursor polyhydrazide route. The new polymers, carrying donor and acceptor heterocyclic moieties with different spacer groups were found to be thermally stable and good of nonlinear optical (NLO) materials with two photon absorption property. The structures of newly synthesized monomers and polymers were confirmed by FTIR, NMR spectral and elemental analyses. Further, polymers were characterized by GPC and TGA studies. Their linear optical and electrochemical properties were evaluated by UV-vis, fluorescence spectroscopic and cyclic voltammetric (CV) studies, respectively, whereas their NLO properties were studied by Z-scan technique using Nd: YAG laser at 532nm with 7ns pulse. The electrochemical band gap of P1-P3 was determined to be 1.98, 1.91 and 2.05eV, respectively. The NLO results reveal that polymers P1-P3 show good optical limiting property with TPA coefficient values 2.9 × 10 − 11m/W, 8.0 × 10 − 11m/W and 1.4 × 10 − 11m/W, respectively. Graphical Abstract This paper focuses on synthesis of new donor-acceptor (D-A) conjugated polymers with different spacer groups and their influence on electrochemical, linear and nonlinear optical properties. Indian Academy of Sciences, 2013 Conjugated polymers nationallicence optical materials nationallicence NLO nationallicence D-A polymers nationallicence SUNITHA M. Department of Chemistry, National Institute of Technology Karnataka, 575 025, Surathkal, India aut VISHNUMURTHY K. Department of Chemistry, National Institute of Technology Karnataka, 575 025, Surathkal, India aut ADHIKARI A. Department of Chemistry, National Institute of Technology Karnataka, 575 025, Surathkal, India aut Journal of Chemical Sciences Springer-Verlag 125/1(2013-01-01), 29-40 0974-3626 125:1<29 2013 125 12039 https://doi.org/10.1007/s12039-013-0366-1 text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12039-013-0366-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- SUNITHA M. Department of Chemistry, National Institute of Technology Karnataka, 575 025, Surathkal, India aut NATIONALLICENCE 700 1- VISHNUMURTHY K. Department of Chemistry, National Institute of Technology Karnataka, 575 025, Surathkal, India aut NATIONALLICENCE 700 1- ADHIKARI A. Department of Chemistry, National Institute of Technology Karnataka, 575 025, Surathkal, India aut NATIONALLICENCE 773 0- Journal of Chemical Sciences Springer-Verlag 125/1(2013-01-01), 29-40 0974-3626 125:1<29 2013 125 12039 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer