Chemiluminescence of 5-(azo-para-phenylene-N-aza-15-crown-5)-phthalhydrazide

Baratoiu, Rodica Daniela; Mutihac, Lucia; Vasilescu, Marilena; Voicescu, Mariana; Latus, Alina; Ioniţă, Gabriela; Beteringhe, Adrian; Constantinescu, Titus; Balaban, Alexandrù T.

doi:10.3998/ark.5550190.0010.d26

Cited by 1 publication

(1 citation statement)

References 32 publications

(37 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…16 The increase of aromaticity leads to a redshift with a green CL. Balaban et al, have synthesized 5-(azo-para-phenylene-N-aza-15-crown-5)-phthalhydrazide, an azo derivative of Luminol 17 which shows a weak fluorescence but a significant chemiluminescence at 425nm. But the chemiluminescent emission was found around 425nm similar only to its parent luminol.…”

Section: Introductionmentioning

confidence: 99%

Green Chemiluminescence of Highly Fluorescent Symmetrical Azo-Based Luminol Derivative

Deepa¹,

Reddy²,

Rajendrakumar³

2018

Orient. J. Chem

View full text Add to dashboard Cite

A symmetrical azo-based Luminol derivative 2 was synthesized using catalytic dehydrogenative coupling reaction procedure. This symmetrical molecule shows blue fluorescence in polar aprotic solvents (λ max = 450 nm). With an increase in aqueous content 2 was exhibiting aggregation caused fluorescence quenching (ACQ) with a red shift of 30 nm (λ max = 480 nm). Distinct emission features were observed for this molecule with a variation in the pH range. In basic medium, deprotonated form of 2 shows fluorescence quenching followed by enhancement of green chemiluminescence (λ max = 490 nm) with H 2 O 2 /Fe 3+ catalytic system. The fluorescence and chemiluminescent (CL) properties of 2 were compared with its parent luminol 1, The CL emission intensity of 2 was found to be about 16 times higher than that of 1. In addition, HOMO-LUMO energy gap for 2 was also calculated using density functional theory (DFT) studies.

show abstract

Section: Introductionmentioning

confidence: 99%