文献类型：期刊文献

中文题名：Two-Photon Fluorescence Properties and Ultrafast Responses of a Hyperbranched Diketo-Pyrrolo-Pyrrole Polymer with Triphenylamine as the Core

英文题名：Two-Photon Fluorescence Properties and Ultrafast Responses of a Hyperbranched Diketo-Pyrrolo-Pyrrole Polymer with Triphenylamine as the Core

作者：Wang Yao-Chuan[1,2];Jiang Yi-Hua[3];Wang Gui-Qiu[1];Liu Da-Jun[1];Li Bo[4];Hua Jian-Li[3]

机构：[1]Dalian Maritime Univ, Dept Phys, Dalian 110626, Peoples R China;[2]Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R China;[3]E China Univ Sci & Technol, Dept Chem, Lab Adv Mat, Shanghai 200237, Peoples R China;[4]E China Normal Univ, Dept Elect Engn, Shanghai 200241, Peoples R China

年份：2015

卷号：32

期号：4

中文期刊名：Chinese Physics Letters

外文期刊名：CHINESE PHYSICS LETTERS

收录：CSTPCD;;EI(收录号：20220711664392);Scopus;WOS:【SCI-EXPANDED(收录号:WOS:000352432800035)】；CSCD:【CSCD2015_2016】；

基金：Supported by the National Natural Science Foundation of China under Grant Nos 11404048, 61205154 and 11375034, the Fundamental Research Funds for the Central Universities under Grant Nos 3132015233, 3132013104, 3132014337, 3132015144 and 3132015152, the State Key Laboratory of Fine Chemicals (KF1409), and the Program for Liaoning Excellent Talents in University under Grant No LJQ2014051.

语种：英文

中文关键词：DPP;Two-Photon Fluorescence Properties and Ultrafast Responses of a Hyperbranched Diketo-Pyrrolo-Pyrrole Polymer with Triphenylamine as the Core;THF;ICT;TPA

外文关键词：Excited states - Energy transfer - Dendrimers - Two photon processes - Conjugated polymers - Aromatic compounds - Charge transfer - Photons

摘要：The two-photon fluorescence properties and ultrafast responses of a hyperbranched polyyne （hb-DPP-J2） with triphenylamine as the central core, Diketo-Pyrrolo-Pyrrole as the connecting unit and electron acceptor are studied. The polymer has a D-π-A-π-D conjugated structure along the extended polyyne w-bridge systems, and the effective condugated unit repeats itself in the whole hyperbranehed polymer chain. The polymer exhibits a large two-photon absorption cross section and high fluorescence quantum yields. The ultrafast dynamic results give a deep understanding of the excited energy transfer processes under excitation, and reveal a long relaxation lifetime of the intramolecular charge transfer （ICT） state.
The two-photon fluorescence properties and ultrafast responses of a hyperbranched polyyne (hb-DPP-J2) with triphenylamine as the central core, Diketo-Pyrrolo-Pyrrole as the connecting unit and electron acceptor are studied. The polymer has a D-pi-A-pi-D conjugated structure along the extended polyyne pi-bridge systems, and the effective conjugated unit repeats itself in the whole hyperbranched polymer chain. The polymer exhibits a large two-photon absorption cross section and high fluorescence quantum yields. The ultrafast dynamic results give a deep understanding of the excited energy transfer processes under excitation, and reveal a long relaxation lifetime of the intramolecular charge transfer (ICT) state.