Results 51 to 60 of about 7,561 (220)
Molecules, 2019 We report a new boron dipyrromethene (BODIPY)-bridged bisphenoxyl diradicaloid (2), which showed closed-shell diamagnetic character in less polar solvents such as dichloromethane but open-shell diradical character with paramagnetic activity in the very ...
Fang Miao, Hoa Phan, Jishan Wu
doaj +1 more source
Physical Chemistry Chemical Physics, 2023 The effect of localized surface plasmon resonance (LSPR) of a system consisting of a highly dipolar merocyanine dye and a silver nanoparticle (NP) was studied experimentally and theoretically.
Niyazbek Kh. Ibrayev +7 more
openaire +3 more sources
Experimental demonstration of the relationship between the second- and third-order polarizabilities of conjugated donor-acceptor molecules [PDF]
, 1994 The dependence of the second- and third-order polarizabilities ((beta) and (gamma) ) on ground-state polarization was measured for a series of donor-acceptor polyenes using electric field induced second harmonic generation and third harmonic generation ...
Bourhill, Grant +9 more
core +1 more source
Highly Solvatochromic 7-Aryl-3-hydroxychromones
The Journal of Physical Chemistry Letters, 2012 Introduction of the dialkylaminophenyl group in position 7 of 3-hydroxychromone changes the orientation of the excited-state dipole moment and leads to superior solvatochromic properties (>170 nm emission shift in aprotic media). The excited-state intramolecular proton-transfer (ESIPT) reaction of 7-aryl-3-hydroxychromones is almost completely ...
Giordano, Luciana +4 more
openaire +4 more sources
Advanced Materials, EarlyView.Highly water‐soluble dicationic bis(indolium) dyes have been prepared, showing excellent two‐photon absorption and light emission. Their fluorescence behavior discloses an unusual increasing blue shift with increasing solvent polarity, which, in parallel, is beneficial for enhanced detection in biological media.
Carlos Benitez‐Martin +5 more
wiley +1 more source
A Simple, Quick, and Precise Procedure for the Determination of Water in Organic Solvents [PDF]
, 1990 A procedure for the UV/VIS-spectroscopic determination of water by the use of a solvatochromic pyridiniumphenolate betaine is given. The water content of organic solvents is calculated by a two parameter equation from λmax of the dye.
Dimroth K. +9 more
core +1 more source
Attachable Solvatochromic Fluorophores and Bioconjugation Studies [PDF]
Organic Letters, 2013 The synthesis and utility of attachable cyclopenta[b]naphthalene solvatochromic fluorophores related to Prodan are described. Two fluorophores were selected for functionalization and bioconjugation studies. The skeletons were chemically modified to include reactive functional groups and showed minimal alteration of the optical properties when compared ...
Erica, Benedetti +4 more
openaire +2 more sources
Azaporphyrinoid‐Based Photo‐ and Electroactive Architectures for Advanced Functional Materials
Advanced Materials, EarlyView.A long‐standing collaboration between the Torres and Guldi groups has yielded diverse azaporphyrinoid‐based donor‐acceptor nanohybrids with promising applications in solar energy conversion. This conspectus highlights key molecular platforms and structure‐function relationships that govern light and charge management, supporting the rational design of ...
Jorge Labella +3 more
wiley +1 more source
A High Sensitivity and Wide Dynamic Range Fiber-Optic Sensor for Low-Concentration VOC Gas Detection
Sensors, 2014 In this paper, we propose a volatile organic compound (VOC) gas sensing system with high sensitivity and a wide dynamic range that is based on the principle of the heterodyne frequency modulation method.
Md. Rajibur Rahaman Khan, Shin-Won Kang
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Chemosensors, 2022 Twisting intramolecular charge transfer (TICT) is a common nonradiative relaxation pathway for a molecule with a flexible substituent, effectively reducing the fluorescence quantum yield (FQY) by swift twisting motions.
Jiawei Liu, Cheng Chen, Chong Fang
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