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Sustainable Conversion
of Elemental Sulfur to Fluorescent
Luminophore
Joginder Singh (4109155)
Aishwarya Tiwari (24128246)
Usha Gavel (24757960)
Pragadeeswara Venkatamani Gunasekaran (25135109)
Arushi Rawat (18937197)
Rakesh Kumar Rai (6270227)
Narattam Sikdar (14296619)
Abhilash Sahu (21751486)
Kohsuke Matsumoto (10745004)
Osamu Tsutsumi (2516947)
Aravind Kumar Rengan (8519769)
Ganesan Prabusankar (2269804)
Biophysics
Biochemistry
Medicine
Biotechnology
Ecology
Mental Health
Computational Biology
studies include crystallographic
excited state (<
>- heterocyclic chalcogenones
340 ° c
emitting materials continues
efficient optoelectronic materials
stating thermal stability
hexaphenylpyridineimidazolthione (< b
hexaphenylpyridineimidazolselone (< b
14 %, τ
sustainable optoelectronics aligned
hppit </ b
hppis </ b
industrial elemental sulfur
avg </ sub
free mechanochemical synthesis
elemental sulfur
valuable materials
n </
f </
thermal analyses
mechanochemical synthesis
free methods
sustained production
strong reliance
steadily increasing
reducing costs
readily synthesized
quantum yield
promising solution
processing challenges
photoluminescence properties
maximum lifetime
health risks
fluorescent luminophore
expand globally
different concentrations
approach highlights
96 ns
9 ns
1 %.
The strong reliance on oil and gas necessitates continuous
refinery
operations, resulting in the unregulated and sustained production
of byproducts such as elemental sulfur (S<sub>8</sub>), thereby posing
significant management challenges. Converting this byproduct into
valuable materials through sustainable, environmentally friendly methods
offers a promising solution by reducing costs, health risks, and processing
challenges. As the field of light-emitting materials continues to
expand globally, the demand for sustainable, stable, and efficient
optoelectronic materials is steadily increasing. Herein, we report
the mechanochemical synthesis of luminescent <i>N</i>-heterocyclic
chalcogenones, hexaphenylpyridineimidazolthione (<b>HPPIT</b>) and hexaphenylpyridineimidazolselone (<b>HPPIS</b>). The
material is readily synthesized by mechanogrinding and ball milling
using various solvent-free methods. Along with the synthesis of material,
the studies include crystallographic and thermal analyses, stating
thermal stability up to 340 °C. Also, it stabilized the excited
state (<i>f</i> = 0.0405) and enhanced the photoluminescence
properties (Φ = 14%, τ<sub>avg</sub> = 8.9 ns) in crystalline <b>HPPIT</b>. To assess the function, <b>HPPIT</b> and <b>HPPIS</b> were converted into films at different concentrations,
and the maximum lifetime (τ<sub>avg</sub>) was 16.96 ns with
a quantum yield (Φ) of 6.1%. This approach highlights the valorization
of industrial elemental sulfur into a luminescent functional material
via solvent-free mechanochemical synthesis, which represents a paradigm
for sustainable optoelectronics aligned with the United Nations Sustainable
Development Goals.
2026-09-29T00:00:00Z
Dataset
Dataset
10.1021/acsaom.6c00476.s002
https://figshare.com/articles/dataset/Sustainable_Conversion_of_Elemental_Sulfur_to_Fluorescent_Luminophore/34021115
CC BY-NC 4.0