Christopher J. Abelt
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View article: Fluorescence of 8-Acyl-1-Pyrrolidinylnaphthalenes
Fluorescence of 8-Acyl-1-Pyrrolidinylnaphthalenes Open
Four 8-acyl-1-pyrrolidinylnaphalenes are prepared where the acyl group is pivaloyl (6), benzoyl (7), benzyloxycarbonyl (8), and ethyloxycarbonyl (9). Crystal structures for 6–8 show that both the carbonyl and pyrrolidinyl groups are nearly…
View article: Peri-Substituted Acyl Pyrrolyl Naphthalenes: Synthesis, Reactions and Photophysical Properties
Peri-Substituted Acyl Pyrrolyl Naphthalenes: Synthesis, Reactions and Photophysical Properties Open
The preparation of two 1-acyl-8-pyrrolylnaphthalenes (5 and 6) and one pyrrolone (8) are reported along with the issues complicating the preparations of other compounds. The photophysical behavior of the fused, planar derivative 6 is explo…
View article: 1,5-Acrylodan: A Fluorescent Bioconjugate Sensor of Protic Environments
1,5-Acrylodan: A Fluorescent Bioconjugate Sensor of Protic Environments Open
1,5-Acrylodan (1-(5-(dimethylamino)naphthalen-1-yl)prop-2-en-1-one) is prepared in six steps from 1-nitronaphthalene and 19% overall yield. The last three steps involve an aryllithium-directed nucleophilic addition, catalytic Kulinkovich c…
View article: Use of Molecular Logic Gates for the Tuning of Chemosensor Dynamic Range
Use of Molecular Logic Gates for the Tuning of Chemosensor Dynamic Range Open
Dynamic range is a crucial aspect in the development of fluorescent chemosensors. We aimed to address this issue using molecular logic gates. By creating an AND logic gate with two binding sites for the same type of ion, we increased the d…
View article: Fluorescence of Half-Twisted 10-Acyl-1-methyltetrahydrobenzoquinolines
Fluorescence of Half-Twisted 10-Acyl-1-methyltetrahydrobenzoquinolines Open
The steric interference of proximal dialkyl amino and acyl groups at the peri (1,8) positions of naphthalene affects the intramolecular charge transfer fluorescence. Previous studies indicate that acyl and freely rotating dimethyl amino gr…
View article: Twisted 8-Acyl-1-dialkyl-amino-naphthalenes Emit from a Planar Intramolecular Charge Transfer Excited State
Twisted 8-Acyl-1-dialkyl-amino-naphthalenes Emit from a Planar Intramolecular Charge Transfer Excited State Open
Fluorescence from dialkylamino donor–acyl acceptor substituted 1,8-naphthalene derivatives can occur either from a planar (PICT) or a twisted (TICT) intramolecular charge transfer excited state. The photophysical properties of 8-acetyl-1-(…
View article: Synthesis and Spectrophotometric Analysis of 1-Azafluorenone Derivatives
Synthesis and Spectrophotometric Analysis of 1-Azafluorenone Derivatives Open
A new extension for the ‘one pot’ construction of diverse 1-azafluorene derivatives featuring a Diels–Alder/retro-Diels–Alder cycloaddition is reported. Conditions were also determined for oxidation to the derived azafluorenones. The spect…
View article: Fluorescence Quenching of Carbonyl-Twisted 5<b>-</b>Acyl-1-dimethylaminonaphthalenes by Alcohols
Fluorescence Quenching of Carbonyl-Twisted 5<b>-</b>Acyl-1-dimethylaminonaphthalenes by Alcohols Open
Derivatives of 1-dimethylamino-5-propionylnaphthalene that constrain the carbonyl group into a five-, six-, and seven-membered ring were prepared, and their fluorescence quenching in protic solvents was studied. Evidence for enhanced quenc…
View article: 1,5-Prodan Emits from a Planar Intramolecular Charge-Transfer Excited State
1,5-Prodan Emits from a Planar Intramolecular Charge-Transfer Excited State Open
1-Propionyl-5-dimethylaminonaphthalene (8, 1,5-Prodan) and two derivatives where the amino group is constrained in a seven-membered (9) and five-membered (10) ring are prepared. All three exhibit strong fluorescence and similar degrees of …
View article: Dual-Sensor Fluorescent Probes of Surfactant-Induced Unfolding of Human Serum Albumin
Dual-Sensor Fluorescent Probes of Surfactant-Induced Unfolding of Human Serum Albumin Open
Two extrinsic fluorescent probes, 3-(dimethylamino)-8,9,10,11-tetrahydro-7H-cyclohepta[a]naphthalen-7-one (1) and 7-(dimethylamino)-2,3-dihydrophenanthren-4(1H)-one (2), are used to probe the unfolding of human serum albumin by sodium dode…
View article: CCDC 1421768: Experimental Crystal Structure Determination
CCDC 1421768: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …