1105069-46-2

Upstream product

• 86-74-8 9H-carbazole 
• 6825-20-3 3,6-dibromo-9H-carbazole 
• 111-25-1 1-bromo-hexane 
• 150623-72-6 3,6-dibromo-9-hexyl-9H-carbazole 
• 87199-17-5 4-formylphenylboronic acid, 

Relevant academic research and scientific papers

Carbazole based A-π-D-π-A dyes with double electron acceptor for dye-sensitized solar cell

Three novel carbazole-based A-π-D-π-A-featured dyes (CSG1-CSG3) have been designed, synthesized for applications in dye-sensitized solar cells and fully characterized with NMR, MS, IR, UV-vis and electrochemical measurements. These dyes share the same donor (N-hexylcarbazole) and acceptor/anchoring group (cyanoacrylic acid), but differs in conjugated linkers incorporated, such as benzene, furan or thiophene, to configure the novel A-π-D-π-A framework for effective electron flow. The power conversion efficiencies were observed to be sensitive to the π-bridging linker moiety. The photovoltaic experiments showed that dye with a benzene linker exhibited a higher open-circuit voltage (0.699 V) compared to thiophene and furan linker. Among all dyes, CSG2 containing a thiophene linker exhibited the maximum overall conversion efficiency of 3.8% (JSC = 8.90 mA cm-2, VOC = 584 mV, FF = 0.74) under standard global AM 1.5 G solar condition. Under similar fabrication conditions, champion dye N719 exhibited the maximum overall conversion efficiency of 6.4% (JSC = 14.74 mA cm- 2, VOC = 606 mV, FF = 0.716).

A-π-D-π-A carbazole derivatives with remarkable solvatochromism and mechanoreponsive luminescence turn-on

Two A-π-D-π-A molecules with a carbazole donor and a dicyanovinyl acceptor but differing in N-hexyl (h-CPDM) and N-isooctyl substituents (i-CPDM) were synthesized, and both of them presented remarkable dual properties of solvatochromism and mechanoresponsive luminescence (MRL) turn-on. The intrinsic intramolecular charge transfer (ICT) characteristic endowed both luminophors with a prominent solvatochromic effect, with emission color tuning from blue to orange-red by changing the solvent from nonpolar hexane to polar dimethyl sulfoxide. Meanwhile, the non-/weakly emissive original powders of h-CPDM and i-CPDM gave bright orange (610 nm) and yellow (596 nm) emission with the photoluminescence quantum yields increasing as high as 85-fold after being ground. Investigations revealed this mechanoresponsive luminescence turn-on could be ascribed to the disturbance of the π-π stacking interactions in the non-/weakly emissive J-aggregates by mechanical force. This work offers carbazole derivatives that can be used as sensitive fluorescent indicators for organic solvents and mechanical sensors.

Organic fluorescent material with deep information hiding function, preparation and application

The invention relates to an information high-order encryption and deep hiding technology, in particular to an organic fluorescent material with an information deep hiding function and preparation and application of the organic fluorescent material. Carbazole serves as an electron donor group, phenyl serves as a conjugate bridge, and 1, 3-indandione serves as an electron acceptor. The organic fluorescent material has an electron acceptor-conjugate bridge-electron donor-conjugate bridge-electron acceptor (A-pi-D-pi-A) molecular structure, can realize the turn-on and quenching of fluorescence or the multiphase transition of fluorescence color under the action of heating stimulation, and can generate multiple changes of fluorescence brightness or color in the process of heating stimulation, and the fluorescence intensity and the color contrast are extremely obvious, so that the identification of information transmitted by taking a fluorescence signal as a carrier is quite facilitated.

Metal-free organic luminophores with ultrastrong dipole moment exhibiting force-induced near-infrared emission (>800 nm) turn-on

Two metal-free organic luminophores with ultrastrong dipole moments of 16.1 (CPBT) and 22.7 (CTBT) Debye were developed for constructing near-infrared mechanoresponsive luminescent materials. Amorphous CTBT showed a remarkable emission turn-on peak at 822 nm due to disturbance in the dipole-dipole interactions in the solid state upon mechanical grinding.

Synthesis and photophysical properties of 3,6-diphenyl-9-hexyl-9H-carbazole derivatives bearing electron withdrawing groups

3,6-Diphenyl-9-hexyl-9H-carbazole derivatives bearing electron withdrawing groups, such as the formyl or the nitro-group in 4-positions of the phenyl substituents, were prepared and characterized. Their photophysical properties were evaluated and compared