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References from Structure–property relationships of azulene-fused tryptanthrin π-systems: impact of fusion mode and dicyanomethylidene substitution. Local targets link to admitted publications; unresolved targets remain external evidence.
Low-bandgap near-IR conjugated polymers/molecules for organic electronics
10.1021/acs.chemrev.5b00165 · 2015 · External reference
High-performance organic semiconductor near-infrared and shortwave-infrared photodetectors: a materials and device roadmap
10.1039/d5sc06197k · 2025 · External reference
Narrowing the band gap: the key to high-performance organic photovoltaics
10.1021/acs.accounts.0c00157 · 2020 · External reference
A-D-A-type electron acceptors based on pyrrole-containing ladder-type heteroarenes for organic solar cells
2023 · External reference
Current advances in fused tetrathiafulvalene donor–acceptor systems
10.1039/c4cs00255e · 2015 · External reference
Exploration of syntheses and functions of higher ladder-type π-conjugated heteroacenes
10.1016/j.chempr.2018.08.017 · 2018 · External reference
Azulene-based organic functional molecules for optoelectronics
10.1016/j.cclet.2016.05.005 · 2016 · External reference
Application of azulene in constructing organic optoelectronic materials: new tricks for an old dog
10.1002/cplu.201700039 · 2017 · External reference
Azulene-based π-functional materials: design, synthesis, and applications
10.1021/acs.accounts.0c00893 · 2021 · External reference
Chemical syntheses and salient features of azulene-containing homo- and copolymers
10.3762/bjoc.17.139 · 2021 · External reference
Azulenocyanine: a new family of phthalocyanines with intense near-IR absorption
10.1021/ja101818g · 2010 · External reference
Synthesis and electronic properties of an azulene-fused tribenzotetraazaporphyrin
10.1246/cl.2011.714 · 2011 · External reference
Biazulene diimides: a new building block for organic electronic materials
10.1039/c6sc02504h · 2016 · External reference
An azulene-fused tetracene diimide with a small HOMO–LUMO gap
10.1002/cplu.201600356 · 2017 · External reference
Synthesis of azulenophthalimides by phosphine-mediated annulation of 1,2-diformylazulenes with maleimides
10.1039/c8qo01121d · 2019 · External reference
NIR-absorbing π-extended azulene: non-alternant isomer of terrylene bisimide
10.1002/anie.202005376 · 2020 · External reference
A perylene five-membered ring diimide for organic semiconductors and π-expanded conjugated molecules
10.1039/d2cc01061e · 2022 · External reference
Merging of azulene and perylene diimide for optical pH sensors
10.3390/molecules28186694 · 2023 · External reference
Impact of naphthalimide-fusion positions on properties of azulene derivatives
10.1002/ajoc.202500373 · 2025 · External reference
Azulenoisoindigo: a building block for π-functional materials with reversible redox behavior and proton responsiveness
10.1016/j.cclet.2021.08.079 · 2022 · External reference
Isoindigo analog fused by the seven-membered ring of azulene: synthesis of (E)-1,1′-dihexyl-5,7,5′,7′-tetramesityl-(3,3′-biazuleno[6,5-b]pyrrolylidene)-2,2′-dione with near-infrared absorption properties
10.1016/j.tetlet.2026.156012 · 2026 · External reference
Recent advances of tryptanthrin and its derivatives as potential anticancer agents
10.1039/d3md00698k · 2024 · External reference
Tryptanthrins as multi-bioactive agents: discovery, diversity distribution and synthesis
10.1016/j.bioorg.2024.108071 · 2025 · External reference
2-Aminotryptanthrin derivative with pyrene as a FRET-based fluorescent chemosensor for metal ions
10.2116/analsci.30.949 · 2014 · External reference
Naphthalene ring-fused 2-aminotryptanthrin as a fluorescent chemosensor for Al3+
10.14723/tmrsj.41.131 · 2016 · External reference
2-Hydroxytryptanthrin and 1-formyl-2-hydroxytryptanthrin as fluorescent metal-ion sensors and near-infrared fluorescent labeling reagents
10.14723/tmrsj.43.109 · 2018 · External reference
2-Hydroxy-1-((2-(pyridin-2-yl)hydrazono)methyl)tryptanthrin as a fluorescent chemosensor for metal ions
10.14723/tmrsj.43.209 · 2018 · External reference
Sulfonated tryptanthrin anolyte increases performance in pH neutral aqueous redox flow batteries
10.1038/s42004-021-00523-0 · 2021 · External reference
Tryptanthrin from indigo: synthesis, excited state deactivation routes and efficient singlet oxygen sensitization
10.1016/j.dyepig.2019.108125 · 2020 · External reference
Tryptanthrin derivatives as efficient singlet oxygen sensitizers
10.1007/s43630-021-00117-8 · 2022 · External reference
Synthesis and photophysical properties of azuleno[1′,2′:4,5]pyrrolo[2,1-b]quinazoline-6,14-diones: azulene analogs of tryptanthrin
10.1016/j.tet.2018.10.020 · 2018 · External reference
Synthesis and halochromic behavior of π-extended azuleno[1′,2′:4,5]pyrrolo[2,1-b]quinazoline-6,14-diones solubilized by mesityl substituent
10.1093/bulcsj/uoag061 · 2026 · External reference
Cyano-capped molecules: versatile organic materials
10.1039/d2ta09699d · 2023 · External reference
Highly electron-deficient dicyanomethylene-functionalized triarylboranes with low-lying LUMO and strong Lewis acidity
10.1021/acs.orglett.1c01983 · 2021 · External reference
Tuning the photophysical properties of acceptor–donor–acceptor di-2-(2-oxindolin-3-ylidene) malononitrile materials via extended π–conjugation: a joint experimental and theoretical study
10.3390/ma16196410 · 2023 · External reference
AzUlene-fused polycyclic aromatic hydrocarbons: synthesis, structural, optical, and electrochemical properties of azuleno[2,1-a]phenalenones
10.1002/ceur.202500039 · 2025 · External reference
Antimicrobial agents from higher plants. New synthesis and bioactivity of tryptanthrin (indolo-[2,1-b]quinazolin-6,12-dione) and its analogues
10.3987/s-1981-02-1017 · 1981 · External reference
Novel indolo[2,1-b]quinazoline analogues as cytostatic agents: synthesis, biological evaluation and structure–activity relationship
10.1016/s0960-894x(02)00431-6 · 2002 · External reference
β-Cyclodextrin catalysed synthesis of tryptanthrin in water
10.1039/c0gc00523a · 2011 · External reference
The chemistry of tryptanthrin and its derivatives
10.3998/ark.5550190.0013.113 · 2012 · External reference
Design, synthesis, and structure–activity relationship studies of tryptanthrins as antitubercular agents
10.1021/np3007167 · 2013 · External reference
Chemoselective oxidation of 1-alkenylisatins with m-chloroperbenzoic acid. Synthesis of new derivatives of isatoic anhydride
10.1134/s1070363215090030 · 2015 · External reference
Benzimidazoquinazolines as new potent anti-TB chemotypes: design, synthesis, and biological evaluation
10.1016/j.bioorg.2020.103774 · 2020 · External reference
A green synthesis of isatoic anhydrides from isatins with urea–hydrogen peroxide complex and ultrasound
10.1016/j.ultsonch.2006.12.003 · 2007 · External reference
Recyclable (PhSe)2-catalyzed selective oxidation of isatin by H2O2: a practical and waste-free access to isatoic anhydride under mild and neutral conditions
10.1039/c5cy01030f · 2015 · External reference
Characterization of azulenylphosphine derivatives. Unexpected debromination and its synthetic utility in the preparation of 2-Substituted azulene
10.1021/om0607090 · 2007 · External reference
Fluorescent solvatochromism of 2-aminotryptanthrin
10.14723/tmrsj.38.123 · 2013 · External reference
Photophysical properties of the 2-hydroxytryptanthrin and its sodium salt as near-infrared dyes for fluorescent imaging
10.2116/analsci.32.251 · 2016 · External reference
Spectral characteristics of highly fluorescent 2-(N,N-dimethylamino)tryptanthrin
10.14723/tmrsj.41.143 · 2016 · External reference
Synthesis, reactivity, and electronic properties of 6,6-dicyanofulvenes
10.1021/ol102384k · 2010 · External reference
6,6-Dicyanopentafulvenes: electronic structure and regioselectivity in [2 + 2] cycloaddition–retroelectrocyclization reactions
10.1021/ja309141r · 2012 · External reference
Unresolved reference
External reference
Structure determination of candidine, a violet indolic constituent from culture solutions of Candida lipolytica
10.1016/s0040-4020(01)96610-4 · 1985 · External reference
Comprehensive measurement of the S1 azulene relaxation dynamics and observation of vibrational wavepacket motion
10.1016/s0009-2614(98)01288-3 · 1999 · External reference
Fluorescence quenching dynamics of azulene and 2-haloazulenes by CCl4 in nonpolar solvents
10.1016/s0009-2614(99)01448-7 · 2000 · External reference
Unresolved reference
External reference
Analysis of stereoelectronic properties, mechanism of action and pharmacophore of synthetic indolo[2,1-b]quinazoline-6,12-dione derivatives in relation to antileishmanial activity using quantum chemical, cyclic voltammetry and 3-D-QSAR CATALYST procedures
10.1016/s0968-0896(02)00013-5 · 2002 · External reference
