338776-72-0

Upstream product

• 123324-71-0 p-tert-butylphenylboronic acid 
• 81090-53-1 N,N-bis(4-bromophenyl)aniline 
• 62-53-3 aniline 
• 162258-89-1 4-bromo-4'-tert-butylbiphenyl 

Downstream Products

• 346703-10-4 4-(bis(4′-tert-butylbiphenyl-4-yl)amino)benzaldehyde 
• 346703-11-5 4-(bis(4'-tert-butylbiphenyl-4-yl)amino)benzaldehyde tosylhydrazone 

Relevant academic research and scientific papers

Bis (4 ′-Tert-butylbiphenyl-4-yl)aniline (BBA)-substituted A3B zinc porphyrin as light harvesting material for conversion of light energy to electricity

Limited synthetic steps via low-cost starting materials are needed to develop large-scale light-Active materials for efficient solar cells. Here, novel bis(4′-Tert-butylbiphenyl-4-yl)aniline (BBA) based A3B zinc porphyrin (GB) is synthesized and applied as a light harvesting/electron injection material in dye-sensitized solar cells. The GB sensitizer was characterized by various spectroscopic techniques and the optimized device shows JSC of 10.98 ± 0.37 mA/cm2 and power conversion efficiency (PCE) of 3.34 ± 0.26%. In addition, performance is enhanced up to 3.9% by the addition of co-Adsorbent 3a,7a-dihydroxy-5b-cholic acid (chenodeoxycholic acid, CDCA) to minimize staking of the planar porphyrin macrocycles. These results demonstrate that novel broad-Absorbing light-Active material (GB) could be used for indoor solar panels.

SOLAR CELL DYES FOR COPPER REDOX BASED DYE SENSITIZED SOLAR CELLS AND COMBINATIONS THEREOF

The present application discloses compounds and compositions, useful in the manufacture of dye-sensitized solar cells and other similar technology.

Butterfly-Like Triarylamines with High Hole Mobility and On/Off Ratio in Bottom-Gated OFETs

Highly π-extended butterfly-shaped triarylamine dyads with aryleneethynylene spacer were constructed using an efficient synthetic route. These aryleneethynylene-bridged dyads are highly fluorescent and exhibited high HOMO levels, and low bandgaps, which a

Photo-induced energy and electron transfer in carboxylic acid functionalized bis(4′-tert-butylbiphenyl-4-yl)aniline (BBA)-substituted A3B zinc porphyrins

Three bis(4′-tert-butylbiphenyl-4-yl)aniline (BBA)-substituted A3B zinc porphyrins containing BBA attached to the three meso-positions of the porphyrin macrocycle via varied spacers i.e., directly connected, phenyl, and ethoxy phenyl, and carbo

SOLAR CELL DYES FOR COPPER REDOX BASED DYE SENSITIZED SOLAR CELLS AND COMBINATIONS THEREOF

The present application discloses compounds and compositions, useful in the manufacture of dye-sensitized solar cells and other similar technology.

Excitation-Wavelength-Dependent Light-Induced Electron Transfer and Twisted Intramolecular Charge Transfer in N, N-Bis(4′- tert-butylbiphenyl-4-yl)aniline Functionalized Borondipyrromethenes

A series of bis(4′-tert-butylbiphenyl-4-yl)aniline (BBA) functionalized borondipyrromethene (BODIPY) dyads, Dyads 1-3, containing the BBA group tethered to BODIPY moiety either directly or through a phenyl or alkynyl phenyl spacers are synthesized, and the light-mediated charge transfer within the chromophores has been systematically investigated. The crystal structure of Dyad-1 showed a tilt of 44.2° between the BODIPY and BBA molecular planes and intermolecular C-H···πinteractions with these moieties. Cyclic voltammetric and computational studies showed that the BBA moiety can act as the electron donor (D) and BODIPY as the electron acceptor (A) and the optical absorption studies revealed that an increase in the conjugation of the linker from Dyad-1 to Dyad-2 resulted in bathochromic shifts. Steady-state fluorescence studies involving photoexcitation of the BBA moiety at 326 nm resulted in the decrease in fluorescence intensity of the BBA, indicating the possibility of sequential occurrence of faster photoinduced energy transfer (PEnT) followed by the photoinduced electron transfer (PET) or solely PET within the dyads, and the driving forces of the charge separation were calculated to be exothermic in all of the employed solvents. Parallel time-resolved fluorescence experiments involving the excitation of BBA moiety also supported the occurrence of charge separation in these dyads. Interestingly, excitation of the BODIPY moiety of Dyad-1 and Dyad-2 at 490 nm in solvents of increasing polarity leads to a red-shifted BODIPY emission with weakened intensity. This spectral behavior indicated the occurrence of emission from the locally excited (LE) state in nonpolar solvents, whereas formation of an LE state followed by the rotation of the chromophores at the D-A bond leads to a low energy twisted intramolecular charge transfer state (TICT), resulting in a charge-separated state BBA+?-BODIPY-? in polar solvents. Furthermore, the hydrophobicity studies involving the solutions of dyads in admixtures of polar tetrahydrofuran (THF) and nonpolar hexanes revealed that when the fraction of hexanes in these mixtures is increased, the emission of BODIPY moiety was observed to be blue-shifted and exhibited enhanced intensity supporting the occurrence of TICT in these dyads.

Excitation-dependent electron exchange energy and electron transfer dynamics in a series of covalently tethered: N, N-bis(4′-tert-butylbiphenyl-4-yl)aniline-[C60] fullerene dyads via varying π-conjugated spacers

Femtosecond time-resolved fluorescence and transient absorption studies are reported for three newly synthesized covalently linked N,N-bis(4′-Tert-butylbiphenyl-4-yl)aniline (BBA) and pyrrolidinofullerenes (C60)-based donor-π conjugated bridge-Acceptor dyads (D-B-A) as functions of the bridge length (7.1, 9.5 and 11.2 ? for Dyad-1, Dyad-2 and Dyad-3), dielectric constants of the medium and pump wavelengths. In polar solvent, ultrafast fluorescence quenching (kEET ≥ 2 × 1012 s-1) of the BBA moiety upon excitation of the BBA moiety (320 nm) is observed in the dyads and is assigned to a mechanism involving electron exchange energy transfer (EET) from 1BBA? to C60 followed by electron transfer from BBA to 1C60?. Cohesive rise and decay dynamics of conjugated BBA+-C60- anion pairs confirm the involvement of a distance independent adiabatic charge-separation (CS) process (kCS ≥ 2.2 × 1011 s-1) with near unity quantum efficiency (φCS ≥ 99.7%) and a distance-dependent non-Adiabatic charge-recombination (CR) process [kCR ～ (1010-108) s-1]. In contrast, excitation of the C60 moiety (λex = 430 to 700 nm) illustrates photoinduced electron transfer from BBA to 1C60?, involving non-Adiabatic (diabatic) and distance-dependent CS (kCS in the range of 0.59-1.78 × 1011 s-1) with 98.86-99.6% (Dyad-3-Dyad-1) quantum efficiency and a CR process with kCR values [kCR ～ (1010-108) s-1] up to three orders greater than kCS of the respective dyads. Both the processes, CS and CR, upon C60 excitation and the CR process upon BBA excitation show distance dependent rate constants with exponential factor β ≤ 0.5 ?-1, and electron transfer is concluded to occur through a covalently linked conjugated π bridge. Global and target analysis of fsTA data reveal the occurrence of two closely lying CS states, thermally hot (CShot) and thermally relaxed (CSeq) states, and two CR processes with two orders of different rate constants. Careful analysis of the kinetic and thermodynamic data allowed us to estimate the total reorganization energy and electronic coupling matrix (V), which decrease exponentially with distance. These novel features of the distance independent adiabatic CS process and the distance-dependent diabatic CR process upon donor excitation are due to extending the π-conjugation between BBA and C60. The demonstrated results may provide a benchmark in the design of light-harvesting molecular devices where ultrafast CS processes and long-lived CS states are essential requirements.

Intramolecular charge-transfer interaction in a new dyad based on C60 and bis(4′-tert-butylbiphenyl-4-yl) aniline (BBA) donor

A novel dyad 2 based on C60 and bis(4′-tert-butylbiphenyl-4-yl)aniline (BBA) donor has been synthesized and characterized. Cyclic voltammetry (CV) and UV-vis spectra of 2, 61-phenyl-1, 2-methanofullerene[60] 4, 1,2-methanofullerene[60] 5, and BBA were measured and analyzed. CV measurements showed that a reversible oxidation wave of 2 was positively shifted by 40 mV compared to that of BBA. More remarkably, comparing UV-vis spectra of 2 and 5 shows the big hyperchromic effect of 2 on a broad band at 500 nm despite lacking of more than 400 nm of absorbance for BBA. These results indicate obvious evidence of intramolecular charge-transfer interactions between C60-moiety and BBA.