Synthesis and optical nonlinear property of Y-type chromophores based on double-donor structures with excellent electro-optic activity

Abstract

New Y type chromophores were synthesized and the hyperpolarizability can be effectively translated into large electro-optic coefficients in poled polymers.

DFT predictions of the oxidation potential of organic dyes for opto-electronic devices

“…1, all of them undergo single electron oxidation. Most of them are donoracceptor (DA) conjugate chromophores such as the tricyanofuran amine 12 which exhibits non linear optical activity [20][21][22], amino oligoenes 1-5 [23], coumarine and perylene dyes (13,16) used so far as sensitizers for dye sensitized solar cells (DSSC) [24,25].…”

Using phenoxazine and phenothiazine as electron donors for second-order nonlinear optical chromophore: Enhanced electro-optic activity

“…The chromophores L1 even exhibit superior optical nonlinearity compared with their alkyl D-p-A counterparts (traditional chromophore FTC with the N, N-diethylaniline benzyl donor under the same condition (39 pmV À1 at 25 wt%) [21]. High r 33 value indicated that the new POZ donor can efficiently improve the electron-donating ability thus enhancing the macroscopic EO activity.…”

“…Besides, many kinds of organic chromophores based on carbazole [25], indoline [11] and other donating groups have been developed and have shown potential application for second-order NLO chromophores. The r 33 values of traditional aryl chromophores (like triphenylamine or carbazole D-p-A chromophores) remained 10e20 pm/V, which are much lower than those obtained from their alkyl D-p-A counterparts (traditional chromophore FTC achieve r 33 values of 39 pmV À1 at 25 wt%) [2,21,26]. Recent studies showed that introducing additional heteroatoms into the benzene ring moiety of donor could provide abundant opportunities for further modifications of chromophores thus influence nonlinear optical properties of chromophores [27e29].…”

“…Many studies on NLO chromophores have mainly focused on the design of electron bridges and electron acceptors [18e20]. The electron donors, which are important components of NLO chromophores, have received little attention [21]. Traditional alkyl and aryl amines were considered to be the ideal electron donors and were often used [22e24].…”

Novel chromophores with excellent electro-optic activity based on double-donor chromophores by optimizing thiophene bridges

“…Based on above point, as well as our previous work on the "double-donor chromophore" [5,9,24], we designed and synthesized three new double donor chromophores y1, y2, and y3. In our previous work, it has been shown from both theoretical and experimental analysis that the linear and nonlinear optical properties of double-donor chromophores are excellent.…”