Aggregation-induced emission of matrix-free graphene quantum dots via selective edge functionalization of rotor molecules

S Lee, J Lee, S Jeon - Science Advances, 2023 - science.org
Graphene quantum dots (GQDs) are nanosized graphene derivatives with unique
photoluminescence (PL) properties that have advantages in optoelectronic applications due …

[HTML][HTML] Regulating the proximity effect of heterocycle-containing AIEgens

J Zhang, Y Tu, H Shen, JWY Lam, J Sun… - Nature …, 2023 - nature.com
Proximity effect, which refers to the low-lying (n, π*) and (π, π*) states with close energy
levels, usually plays a negative role in the luminescent behaviors of heterocyclic …

Fluorescence enhancement of pyrene chromophores induced by alkyl groups through σ–π conjugation: systematic synthesis of primary, secondary, and tertiary …

Y Niko, S Kawauchi, S Otsu, K Tokumaru… - The Journal of Organic …, 2013 - ACS Publications
We have systematically synthesized 1-, 3-, 6-, and 8-alkyl-substituted pyrene derivatives
using the latest synthesis methods and investigated the effects of alkyl substitution on the …

[HTML][HTML] A novel pyrene-based two-photon active fluorescent dye efficiently excited and emitting in the 'tissue optical window (650–1100 nm)'

Y Niko, H Moritomo, H Sugihara, Y Suzuki… - Journal of Materials …, 2015 - pubs.rsc.org
The development of two-photon (TP) active fluorophores remains an important issue. Dyes
that can be excited and fluoresce efficiently in the 'tissue optical window'(650–1100 nm) are …

Photoredox (NN)Mn(I) Catalysed Acceptorless Dehydrogenation: Synthesis of Amides, Aldehydes and Ketones

A Joshi, S Kumari, S Kundu - Advanced Synthesis & Catalysis, 2022 - Wiley Online Library
An acceptorless dehydrogenative methodology for the synthesis of amides, aldehydes and
ketones from hemiaminal and alcohols in the presence of manganese (I) based …

Solution‐processable carbon nitride polymers for photoelectrochemical applications

N Karjule, R Phatake, M Volokh, I Hod… - Small …, 2019 - Wiley Online Library
A general and straightforward synthesis of a series of solution‐processable carbon nitride
polymers is described with excellent and tunable optical and electronic properties. The high …

Ultrafast diesel oil spill removal by fibers from silk-cotton tree: Characterization and sorption potential evaluation

LMTM Oliveira, LFAM Oliveira, AF Sonsin… - Journal of Cleaner …, 2020 - Elsevier
Fibers from silk-cotton tree were characterized by scanning electron microscopy, Fourier
transform infrared, thermogravimetric analysis, photoluminescence excitation and applied in …

Fundamental photoluminescence properties of pyrene carbonyl compounds through absolute fluorescence quantum yield measurement and density functional theory

Y Niko, Y Hiroshige, S Kawauchi, G Konishi - Tetrahedron, 2012 - Elsevier
We reviewed the photophysical properties of carbonyl-functionalized pyrene derivatives [ie,
pyrene with aldehyde (PA: 1-formylpyrene), ketone (PK: 1-acetylpyrene), carboxylic acid …

Progressive acylation of pyrene engineers solid state packing and colour via C–H⋯ H–C, C–H⋯ O and π–π interactions

SK Rajagopal, AM Philip, K Nagarajan… - Chemical …, 2014 - pubs.rsc.org
Quantum theory of atoms-in-molecules and Hirshfeld surface analyses indicated an
increase in the extent of (i) C–H⋯ H–C;(ii) C–H⋯ O,(iii) π–π interactions and a decrease in …

Pyrene-based D–π–A dyes that exhibit solvatochromism and high fluorescence brightness in apolar solvents and water

Y Niko, Y Cho, S Kawauchi, G Konishi - RSC Advances, 2014 - pubs.rsc.org
A novel pyrene-based D–π–A dye consisting of piperidine (D) and a secondary N-alkyl
carboxamide (A) was prepared. This dye showed solvatochromism and bright fluorescence …