Wu, Chih-IChih-IWuLee, Guan-RuGuan-RuLeeLin, Chan-TinChan-TinLinChen, Yu-HungYu-HungChenHong, Yun-HuaYun-HuaHongLiu, Wei-GuanWei-GuanLiuWu, Chung-ChihChung-ChihWuWong, Ken-TsungKen-TsungWongChao, Teng-ChihTeng-ChihChao2009-03-252018-07-062009-03-252018-07-06200500036951http://ntur.lib.ntu.edu.tw//handle/246246/147863http://ntur.lib.ntu.edu.tw/bitstream/246246/147863/1/03.pdfhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-28844472919&doi=10.1063%2f1.2140587&partnerID=40&md5=6b086d77e2eda8d141ece86edd3cc96cThe influences of substitutions on the electronic structures of oligofluorenes were systematically investigated. Electronic states of oligofluorenes with various types of C9 substitutions were studied by both ultraviolet photoemission spectroscopy and theoretical calculation. It is found that the substituents could have significant interaction with the backbone and substantially modify the electronic structures of oligofluorenes, depending on the types of substitutions. Consequently, the electronic properties that would affect the operations of electronic devices also considerably depend on the substitutions of the oligofluorenes. © 2005 American Institute of Physics.application/pdf263309 bytesapplication/pdfen-USElectronic structure; Photoemission; Spectroscopic analysis; Ultraviolet radiation; Electronic states; Oligofluorenes; Oligomersjournal article10.1063/1.21405872-s2.0-28844472919WOS:000233825900059http://ntur.lib.ntu.edu.tw/bitstream/246246/147863/1/03.pdf