Large Nonlinear Optical Activity of a Near-infrared-absorbing Bithiophene-based Polymer with a Head-to-head Linkage

Ren, Can1; Xiao, Shuyu2,3,4; Li, Junzi1; Ma, Lin5; Chen, Rui6; Ye, Chuanxiang7; Gao, Yang2,3; Su, Chenliang1; He, Tingchao2,3,4

2021-02-15

10.1002/asia.202001311

Chemistry-An Asian Journal   影响因子和分区

1861-4728

1861-471X

Although the production of near-infrared (NIR)-absorbing organic polymers with an excellent nonlinear optical (NLO) response is vital for various optoelectronic devices and photodynamic therapy, the molecular design and relevant photophysical investigation still remain challenging. In this work, large NLO activity is observed for an NIR-absorbing bithiophene-based polymer with a unique head-to-head linkage in the NIR region. The saturable absorption coefficient and modulation depth of the polymer are determined as similar to-3.5x10(5) cm GW(-1) and similar to 32.43%, respectively. Notably, the polymer exhibits an intrinsic nonlinear refraction index up to similar to-9.36 cm(2) GW(-1), which is six orders of magnitude larger than that of CS2. The maximum molar-mass normalized two-photon absorption cross-section (sigma(2)/M) of this polymer can be up to similar to 14 GM at 1200 nm. Femtosecond transient absorption measurements reveal significant spectral overlap between the 2PA and excited state absorption in the 1000-1400 nm wavelength range and an efficient triplet quantum yield of similar to 36.7%. The results of this study imply that this NIR-absorbing polymer is promising for relevant applications.

near-infrared-absorbing bithiophene-based polymer saturable absorption nonlinear refraction two-photon absorption

SCI ; EI

英语

通讯

National Natural Science Foundation of China[11904240,11874125] ; Natural Science Foundation of Guangdong Province["2018A030310637","2018A030310635"] ; Science and Technology Planning Project of Shenzhen Municipality[JCYJ20170818142921044]

Chemistry

Chemistry, Multidisciplinary

WOS:000607548700001

WILEY-V C H VERLAG GMBH

20210309783958

Excited states ; Infrared devices ; Optoelectronic devices ; Organic polymers ; Photodynamic therapy ; Quantum theory ; Two photon processes

Medicine and Pharmacology:461.6 ; Nonlinear Optics:741.1.1 ; Optical Devices and Systems:741.3 ; Organic Polymers:815.1.1 ; Quantum Theory; Quantum Mechanics:931.4

Web of Science

1.Shenzhen Univ, Int Collaborat Lab 2D Mat Optoelect Sci & Technol, SZU NUS Collaborat Ctr,Inst Microscale Optoelect, Minist Educ,Engn Technol Res Ctr 2D Mat Informat, Shenzhen 518060, Peoples R China
2.Shenzhen Univ, Minist Educ, Key Lab Optoelect Devices & Syst, Shenzhen 518060, Guangdong, Peoples R China
3.Shenzhen Univ, Coll Phys & Optoelect Engn, Shenzhen 518060, Guangdong, Peoples R China
4.Nanjing Univ Posts & Telecommun, Key Lab Organ Elect & Informat Displays, Inst Adv Mat IAM, 9 Wenyuan Rd, Nanjing 210023, Peoples R China
5.Guangdong Univ Technol, Sch Phys & Optoelect Engn, Guangzhou 510006, Peoples R China
6.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
7.Shenzhen Inst Informat Technol, Shenzhen 518172, Peoples R China

Ren, Can,Xiao, Shuyu,Li, Junzi,et al. Large Nonlinear Optical Activity of a Near-infrared-absorbing Bithiophene-based Polymer with a Head-to-head Linkage[J]. Chemistry-An Asian Journal,2021,16(4):309-314.

Ren, Can.,Xiao, Shuyu.,Li, Junzi.,Ma, Lin.,Chen, Rui.,...&He, Tingchao.(2021).Large Nonlinear Optical Activity of a Near-infrared-absorbing Bithiophene-based Polymer with a Head-to-head Linkage.Chemistry-An Asian Journal,16(4),309-314.

Ren, Can,et al."Large Nonlinear Optical Activity of a Near-infrared-absorbing Bithiophene-based Polymer with a Head-to-head Linkage".Chemistry-An Asian Journal 16.4(2021):309-314.