- COMPLEX CRYSTAL AND CHEMOSENSOR PROVIDED WITH SAME
-
The complex crystal of the present disclosure is a complex crystal having a structure in which supramolecular units each composed of two or more types of molecules are arrayed. Each of the supramolecular units contains a cyanoacrylic acid derivative and a
- -
-
Paragraph 0138
(2020/01/24)
-
- Photosensitive dye of D-D-pi-A structure with triphenylamine as two-electron donor as well as preparation method and application of photosensitive dye
-
The invention discloses a photosensitive dye of a D-D-pi-A structure with triphenylamine as a two-electron donor as well as a preparation method and application of the photosensitive dye. According to the photosensitive dye, triphenylamine is adopted as the two-electron donor, 3,4-ethylene dioxythiophene is adopted as a pi conjugate bridge and cyanoacetic acid is adopted as an electron donor, the chemical structural formula of the photosensitive dye is as shown in the specification, and in the formula, R1 is a group of vinyl, butadienyl or p-divinyl benzene, and R2 is methoxy or hexyloxy. The photosensitive dye disclosed by the invention is diverse in structure and is capable of improving the dyeing property, and thus relatively high photoelectric conversion efficiency is achieved. The invention further provides a corresponding preparation method of the photosensitive dye. The photosensitive dye is prepared from a primary electron donor and a secondary electron donor of different structures through reaction. The preparation method is simple in process, low in preparation cost and environmental-friendly. The invention further provides corresponding application of the photosensitive dye. The photosensitive dye can be used for preparing dye-sensitized solar cells, and tests show about 6% of photoelectric conversion efficiency is achieved.
- -
-
Paragraph 0070; 0080; 0082
(2017/11/16)
-
- Molecular engineering of triphenylamine based aggregation enhanced emissive fluorophore: Structure-dependent mechanochromism and self-reversible fluorescence switching
-
Triphenylamine (TPA), a propeller-shaped optoelectronic molecule, has been used to generate stimuli-responsive smart fluorescent organic materials and correlate the effect of subtle structural changes on the molecular packing and mechanochromic fluorescen
- Hariharan, Palamarneri Sivaraman,Prasad, Viki Kumar,Nandi, Surajit,Anoop, Anakuthil,Moon, Dohyun,Anthony, Savarimuthu Philip
-
p. 146 - 155
(2017/12/02)
-
- Self-reversible thermofluorochromism of D-A-D triphenylamine derivatives and the effect of molecular conformation and packing
-
Triphenylamine (TPA) based donor-acceptor-donor (D-A-D) compounds were synthesized showing aggregation enhanced emission (AEE) and molecular conformation and packing dependent rare self-reversible thermofluorochromism in the solid state. 1, with TPA subst
- Kundu, Anu,Karthikeyan, Subramanian,Moon, Dohyun,Anthony, Savarimuthu Philip
-
p. 6979 - 6985
(2017/12/05)
-
- Triphenylamine photoconductive polymers for high performance photorefractive devices
-
Photorefractive performances of the composites using two kinds of photoconductive triphenylamine-based polymer have been compared and investigated. One polymer is poly(4-(diphenylamino)benzyl acrylate) (PDAA). The other is newly synthesized one of photoco
- Giang, Ha Ngoc,Kinashi, Kenji,Sakai, Wataru,Tsutsumi, Naoto
-
-
- Electrochromic properties of novel chalcones containing triphenylamine moiety
-
A series of novel electrochromic chalcones containing triphenylamine units were synthesized by Aldol reaction and characterized by NMR, IR and MS. Their optical, electrochemical properties were investigated using UV-vis, photoluminescence spectra and cyclic voltammetry. The molecular orbital energy levels and excitation energies were calculated by quantum chemical calculation. It was found that the fluorescence intensity is decreasing with formation of charge-transfer state. The existence of electron donating group on triphenylamine unites caused a significant bathochromic shift of the UV absorption maximum and increased EHOMO and ELUMO. The electrochromic property of the synthesized compounds was studied by spectroelectrochemical experiments. The results showed that the chalcones containing triphenylamine moiety presented good electrochromic stability, with a color change from yellow to blue as applied potentials ranging from 0.0 to 2.8 V. The coloring and bleaching time was in the range of 2.9-4.2 s and 1.7-3.3 s, respectively.
- Jin, Huiyi,Li, Xianggao,Tan, Tingfeng,Wang, Shirong,Xiao, Yin,Tian, Jianhua
-
p. 154 - 160
(2014/04/17)
-
- Supramolecular tetrad of subphthalocyanine-triphenylamine-zinc porphyrin coordinated to fullerene as an "antenna-reaction-center" mimic: formation of a long-lived charge-separated state in nonpolar solvent
-
We report here the formation of a long-lived charge-separated state of a self-assembled donor-acceptor tetrad, formed by axial coordination of a fulleropyrrolidine appended with an imidazole coordinating ligand (C 60Im) to the zinc center of a subphthalocyanine-triphenylamine-zinc porphyrin (SubPc-TPA-ZnP), as a charge-stabilizing antenna reaction center mimic in toluene. The subphthalocyanine and triphenylamine entities, with their high-energy singlet states, act as an energy-transferring antenna unit to produce a singlet zinc porphyrin. The formation constant for the self-assembled tetrad was determined to be 1.0×104M-1, suggesting a moderately stable complex-formation. The geometric and electronic structures of the covalently linked SubPc-TPA-ZnP triad and self-assembled SubPc-TPA-ZnP:C60Im tetrad were examined by using an ab initio B3LYP/6-31G method. The majority of the highest occupied frontier molecular orbital was found over the ZnP and TPA entities, whereas the lowest unoccupied molecular orbital was located over the fullerene entity, suggesting the formation of the radical-ion pair (SubPc-TPA-ZnP·+:C 60Im·-). The redox measurements revealed that the energy level of the radical-ion pair in toluene is located lower than that of the singlet and triplet states of the zinc porphyrin and fullerene entities. The femtosecond transient absorption measurements revealed fast charge separation from the singlet porphyrin to the coordinated C60Im with a life-time of 1.1 ns. Interestingly, slow charge recombination (1.6 × 105 s-1) and the long lifetime of the charge-separated state (6.6 μs) were obtained in toluene by utilizing the nanosecond transient measurements.
- El-Khouly, Mohamed E.,Ju, Dong Kyu,Kay, Kwang-Yol,D'Souza, Francis,Fukuzumi, Shunichi
-
experimental part
p. 6193 - 6202
(2010/07/13)
-
- Photoinduced charge separation of the covalently linked fullerene-triphenylamine-fullerene triad. effect of dual fullerenes on lifetimes of charge-separated states
-
Photoinduced intramolecular events of the newly synthesized fullerene-triphenylamine-fullerene (C60-TPA-C60) triad, in which the TPA entity was substituted with an electron-donating CH 3O-group to increase electron-donating ability, were investigated in relation to a C60-TPA dyad. The molecular orbital calculations showed that the radical cation is located on the TPA entity, whereas the radical anion is located on two C60 entities in the radical ion pair. The fluorescence intensity of the singlet excited state of C60 was efficiently quenched by the attached TPA moiety in polar solvents. The quenching pathway involves a charge-separation process from the TPA to the singlet excited state C60. The lifetimes of the radical ion-pairs for C 60-TPA-C60 evaluated from nanosecond transient absorption measurements were found to be 600 and 454 ns in benzonitrile and dimethylformamide, respectively. These lifetimes of radical ion-pairs of C 60-TPA-C60 are longer than those of the C60-TPA dyad, which reflects the effect of the second C60 moiety in stabilizing the radical ion-pairs.
- El-Khouly, Mohamed E.,Kim, Jong Hyung,Kwak, Minseok,Choi, Chan Soo,Ito, Osamu,Kay, Kwang-Yol
-
experimental part
p. 2465 - 2472
(2009/09/30)
-
- Compounds capable of transporting/injecting hole and organic electroluminescent device having self-assembled monolayer comprising the same
-
Provided are compounds having molecular components capable of transporting/injecting hole and an organic EL device having a self-assembled monolayer comprising the same. The compound has the following formula: Ar—R—SiX3 wherein Ar is a functional group having hole transporting or injecting capability, R is a C1 to C22 alkyl group, and X is an alkoxy group or halogen.
- -
-
-
- Triphenylamine derivative, charge-transporting material comprising the same, and electrophotographic photoreceptor
-
A triphenylamine derivative, represented by the following general formula (1): STR1 wherein R1, R2, R3, R4, R5 and R6 each represents a hydrogen atom, a lower alkyl group, an alkoxy group, a halogen atom or an aryl group which may have a substituent group; and m and n each represents 0 or 1.
- -
-
-