Synthesis of fused chalcogenophenocarbazoles: towards dual emission resulting from hybridized local and charge-transfer states

Dual Emission ◽

Fused chalcogenophenocarbazoles exhibit fluorescence resulting from recombination of either locally excited, intramolecular charge-transfer or hybridized local and charge-transfer (HLCT) states.

Synthesis, regioselective aerobic Pd(ii)-catalyzed C–H bond alkenylation and the photophysical properties of pyrenylphenylpyrazoles

Photochemical & Photobiological Sciences ◽

10.1039/c6pp00009f ◽

2016 ◽

Vol 15 (4) ◽

pp. 580-588 ◽

Cited By ~ 4

Author(s):

Rafał Flamholc ◽

Janusz Zakrzewski ◽

Anna Makal ◽

Arnaud Brosseau ◽

Rémi Métivier

Keyword(s):

Charge Transfer ◽

Excited States ◽

Photophysical Properties ◽

Dual Emission ◽

Pd(ii)-catalyzed C–H alkenylation of a pyrenylphenylpyrazole afforded fluorophore exhibiting solvent-dependent dual emission, resulting from locally-excited (LE) and intramolecular charge transfer (ICT) excited states.

The transition from locally excited states to twisted intramolecular charge transfer states for fluorescence methylene blue labeled in biodegradable silica particles

Journal of Molecular Liquids ◽

10.1016/j.molliq.2019.111312 ◽

2019 ◽

Vol 291 ◽

pp. 111312 ◽

Cited By ~ 2

Author(s):

Wenhao Wang ◽

Wei Zhang ◽

Haibin Sun ◽

Xiaowei Li ◽

Qingyang Du ◽

...

Keyword(s):

Methylene Blue ◽

Charge Transfer ◽

Excited States ◽

Silica Particles ◽

Twisted Intramolecular Charge Transfer ◽

Temperature-Controlled Locally Excited and Twisted Intramolecular Charge-Transfer State-Dependent Fluorescence Switching in Triphenylamine–Benzothiazole Derivatives

ACS Omega ◽

10.1021/acsomega.8b03099 ◽

2019 ◽

Vol 4 (3) ◽

pp. 5147-5154 ◽

Cited By ~ 7

Author(s):

Anu Kundu ◽

Subramanian Karthikeyan ◽

Yoshimitsu Sagara ◽

Dohyun Moon ◽

Savarimuthu Philip Anthony

Keyword(s):

Charge Transfer ◽

Charge Transfer State ◽

Twisted Intramolecular Charge Transfer ◽

Locally Excited ◽

Benzothiazole Derivatives ◽

State Dependent ◽

Fluorescence Switching ◽

Temperature Controlled ◽

Transfer State

Intramolecular charge transfer in aminobenzonitriles and tetrafluoro counterparts: fluorescence explained by competition between low-lying excited states and radiationless deactivation. Part I: A mechanistic overview of the parent system ABN

Physical Chemistry Chemical Physics ◽

10.1039/c5cp04690d ◽

2016 ◽

Vol 18 (9) ◽

pp. 6861-6874 ◽

Cited By ~ 13

Author(s):

Mireia Segado ◽

Isabel Gómez ◽

Mar Reguero

Keyword(s):

Charge Transfer ◽

Excited States ◽

Fluorescence Pattern ◽

The simplicity of the fluorescence pattern of ABN is in fact the outcome of an intricate interplay between locally excited and charge transfer excited states.

Fluorescence of Trans-4-Cyano-4′-dimethylaminostilbene; No Evidence for a TICT State

Zeitschrift für Naturforschung A ◽

10.1515/zna-1983-0818 ◽

1983 ◽

Vol 38 (8) ◽

pp. 928-936 ◽

Cited By ~ 5

Author(s):

Henry Gruen ◽

Helmut Görner

Keyword(s):

Charge Transfer ◽

Double Bond ◽

Relaxation Process ◽

Singlet State ◽

Solvent Polarity ◽

Quantum Yields ◽

Excited Singlet ◽

Dual Emission ◽

Fluorescence Maximum

AbstractThe fluorescence properties of trans-4-cyano-4′-dimethylaminostilbene (trans-1) and a rigid analogue, in which the dimethylaminophenyl group is replaced by an indoline ring, trans-l-(4-cyanophenyl)-2-(5-[2,3-dihydro]N-methylindolyl)ethylene (trans-2) were studied in 20 solvents. The quantum yields of fluorescence (Φf) and of trans→cis photoisomerization (Φt→c) as well as the fluorescence maximum (ν̃f) and the bandwidth (⊿ν̃f) were examined. The activation energies (range: 3.5-7.8 kcal/mol) obtained from <2>f and <£t_c measurements are nearly the same for 1 and 2 in a given solvent. Φf , ν̃f and ⊿ν̃f as a function of solvent polarity and temperature show similar trends for 1 and 2. No dual emission was observed for either of the cyanostilbenes. These findings indicate that a twisted intramolecular charge transfer (TICT) state is not involved in the relaxation process of the first excited trans singlet state (1t*). The main deactivation pathway of 1t* competing with fluorescence is trans→cis photoisomerization by twisting about the C = C double bond in the first excited singlet state for both.

Tuning the dual emission of keto/enol forms of excited-state intramolecular proton transfer (ESIPT) emitters via intramolecular charge transfer (ICT)

Dyes and Pigments ◽

10.1016/j.dyepig.2021.109497 ◽

2021 ◽

pp. 109497

Author(s):

Quan Huang ◽

Qiang Guo ◽

Jingbo Lan ◽

Jingsong You

Keyword(s):

Excited State ◽

Charge Transfer ◽

Proton Transfer ◽

Intramolecular Proton Transfer ◽

Dual Emission

Relay proton transfer triggered twisted intramolecular charge transfer

Photochemical & Photobiological Sciences ◽

10.1039/c5pp00339c ◽

2015 ◽

Vol 14 (12) ◽

pp. 2225-2237 ◽

Cited By ~ 10

Author(s):

Santosh Kumar Behera ◽

G. Krishnamoorthy

Keyword(s):

Charge Transfer ◽

Proton Transfer ◽

Dual Emission ◽

Twisted Intramolecular Charge Transfer ◽

Protic Solvents

The mechanism for the dual emission of 2-(4′-N,N-dimethylaminophenyl)imidazo[4,5-c]pyridine (DMAPIP-c) in protic solvents was investigated by synthesizing and studying its analogues.