Comparison of second-order nonlinear optical chromophores with D–π–A, D–A–π–A and D–D–π–A architectures: diverse NLO effects and interesting optical behavior

Abstract

Four second-order nonlinear optical chromophores with D–π–A, D–A–π–A and D–D–π–A architectures have been synthesized and systematically characterized.

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

“…Chromophore L2 showed moderate bathochromic shift of 36 nm from dioxane to chloroform. This confirms that chromophore L1 is more easily polarizable than chromophores L2 [35]. With a further increase of solvent polarity, saturation behavior was found for both chromophores in more polar solvents, such as acetone, and acetonitrile.…”

Theoretical study of substituent effects on electride characteristics and the nonlinear optical properties of Li@calix[4]pyrrole

“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] With the research, design and improvement of new nonlinear optical materials, various methods for increasing nonlinear optical responses have been proposed. [21][22][23][24][25][26][27][28][29][30][31] Electrides are a novel kind of ionic compound in which electrons serve as the anions. [32][33][34][35] With such a unique structure, electrides show great potential in various applications, such as superconductivity, 36,37 electronics, [38][39][40] and catalysis.…”

Auxiliary donor for tetrahydroquinoline-containing nonlinear optical chromophores: enhanced electro-optical activity and thermal stability

“…[1][2][3] One of the most critical challenges in developing these materials is to design and synthesize second-order nonlinear optical (NLO) chromophores that exhibit good properties such as high thermal and chemical stabilities, large nonlinearity, and good transparency. 6,7 In general, the second-order NLO chromophore can be divided into three blocks: electro-donor, π-conjugated bridge and strong electro-acceptor, called D-π-A system. 6,7 In general, the second-order NLO chromophore can be divided into three blocks: electro-donor, π-conjugated bridge and strong electro-acceptor, called D-π-A system.…”