New Strategy for Synthesis of Polyphenylene Substituted Dendronized Monomers Containing Fluorene Unit and the Study of Their Properties

Kadu, Rupashri K.; Patil, Vishwanath R.

doi:10.1080/10406638.2015.1129974

Cited by 5 publications

(1 citation statement)

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“…Molar mass was used to measure the degree of polymerization (DP). The average molecular weight (M n ) and weight average molecular weight (M w ) were used to calculate the polydispersity index (PDI) which was about one indicating uniform and one polymer length [39]. This observation suggested that the PolyDBFs synthesized were non-branching form.…”

Section: Gel Permeation Chromatography (Gpc)mentioning

confidence: 99%

Alkyl and allyl substituted polydibenzofluorene: blue emitters for future display applications

et al. 2020

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5,8-Dibromo-13,13-bis(alkyl)dibenzofluorene derivatives functionalized with different alkyl molecules [M2a-M2f ] and 2-tert butyl-9,10-di (p-hydroxyphenyl) anthracene [M1b], were designed to research the impact of molecular structure on the optical properties of polymer. Polymers were synthesized by aromatic nucleophilic substitution in moderate to strong yields (60-65%). After structural characterization through several techniques (e.g. FTIR, 1 H, and 13 C-NMR), special emphasis was put on the study of their optical properties through UV-Vis and photoluminescence spectroscopy. The polymers demonstrated strong thermal stability up to 350 °C and high glass transition temperature (108-133 °C). All of the polymers showed blue emission within a range of 416-433 nm and had a band gap of 2.87-2.99 eV. The electrochemical study reveals that, HOMO levels for polymers were estimated in the range of − 5.22 to − 5.26 eV and LUMO of − 2.23 to − 2.38 eV. The polymers demonstrated strong thermal stability and blue emission within a range of 416-433 nm. These polymeric materials have demonstrated high photoluminescence which may be useful for future display applications as a good source.

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Section: Gel Permeation Chromatography (Gpc)mentioning

confidence: 99%