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Symmetrical and asymmetrical imino-naphthalimides in perovskite solar cells

Korzec Mateusz, Kotowicz Sonia, Pająk Agnieszka Katarzyna, Schab-Balcerzak Ewa

Opto-Electronics Review

2021

Vol. 29, No. 4

175--180

In perovskite solar cells, series of symmetrical and asymmetrical imino-naphthalimides were tested as hole-transporting materials. The compounds exhibited high thermal stability at the temperature of the beginning of thermal decomposition above 300 °C. Obtained imino-naphthalimides were electrochemically active and their adequate energy levels confirm the application possibility in the perovskite solar cells. Imino-naphthalimides were absorbed with the maximum wavelength in the range from 331 nm to 411 nm and emitted light from the blue spectral region in a chloroform solution. The presented materials were tested in the perovskite solar cells devices with a construction of FTO/b-TiO2/m-TiO2/perovskite/ HTM/Au. For comparison, the reference perovskite cells were also performed (without hole-transporting materials layer). Of all the proposed materials tested as hole-transporting materials, the bis-(imino-naphthalimide) containing in core the triphenylamine structure showed a power conversion efficiency at 1.10% with a short-circuit current at 1.86 mA and an open-circuit voltage at 581 mV.

Fluorescent naphthalimide dyes for polyester fibres

Stolarski R.

Fibres & Textiles in Eastern Europe

2009

Vol. 17, no. 2 (73)

91--95

Several fluorescent and mostly newly-prepared dyes, derivatives of 4-aminonaphthalimide, were synthesized. The structures of the dyes prepared were confirmed by 1H NMR analysis, and their properties were characterized by thin layer chromatography (TLC) and measurement of the melting points. Fluorescence emission spectra in various solvents were measured, and the quantum & relative fluorescence yield values were determined. All the dyes prepared were used in the coloration of polyester fabrics. The fastness properties of the resultant dyeings were determined, and their chromaticity coordinates and luminance coefficient β values were measured.

Szereg fluorescencyjnych barwników pochodnych 4-aminonaftalimidu zostało zsyntezowanych w dużej mierze po raz pierwszy. Strukturę otrzymanych barwników określono poprzez analizę1H NMR a ich właściwości zostały scharakteryzowane za pomocą chromatografii cienkowarstwowej (TLC) oraz poprzez pomiar temperatury topnienia. Pomierzono emisyjne spektra fluorescencji w różnych rozpuszczalnikach a następnie określono wartość względną i bezwzględną fluorescencji. Wszystkie otrzymane barwniki zostały użyte do barwienia wyrobów poliestrowych. Określono trwałość wybarwionych produktów oraz pomierzono ich współrzędne chromatyczne i współczynnik luminancji β.