Premium
Unprecedented Blue Intrinsic Photoluminescence from Hyperbranched and Linear Polyethylenimines: Polymer Architectures and pH‐Effects
Author(s) -
PastorPérez Lourdes,
Chen Yu,
Shen Zhong,
Lahoz Agustin,
Stiriba SalahEddine
Publication year - 2007
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200700190
Subject(s) - photoluminescence , linear polymer , fluorescence , polymer , amine gas treating , materials science , linear relationship , photochemistry , polymer chemistry , chemistry , organic chemistry , optoelectronics , physics , composite material , statistics , mathematics , quantum mechanics
Abstract The intrinsic photoluminescence properties of hyperbranched polyethylenimines (PEIs) and their linear counterpart (LPEIs) have been studied in absence of any classical fluorescent probes. The comparison of the inherent fluorescence emission between hyperbranched polyethylenimines and their linear analogues demonstrates that linear polyamines are capable of producing strong intrinsic photoluminescence species having long excited lifetimes without need of having a tridimensional‐branched structure. The creation of inherently fluorescent polymeric centers from hyperbranched and linear polyethyleimines can be modulated by specific chemical modification and oxidation of amine groups as well as by adjusting the acidity of the polymer.